Next-generation sequencing of von Willebrand factor and coagulation factor VIII genes: a cross-sectional study in Croatian adult patients diagnosed with von Willebrand disease
PMID:35505650
Gene: VWF
HGNCID: 12726
Next-generation sequencing of von Willebrand factor and coagulation factor VIII genes: a cross-sectional study in Croatian adult patients diagnosed with von Willebrand disease
PMID:35505650
Gene: VWF
HGNCID: 12726
VWD1-1339.751.50.777428.1NormalIntron 37c.6599-2A>G‡-
Case: Croatian adult patient
DiseaseAssertion: VWD1
FamilyInfo: Not specified
ParentalGenotype(s): Not specified
CasePresentingHPOs: HP:0001892, HP:0011890, HP:0000132, HP:0002239, HP:0000790, HP:0001342
CaseHPOFreeText: Normal VWF:Ag of 51.5%, reduced VWF:GPIbM of 39.7%, normal FVIII:C of 74% and reduced VWF:CBA of 28.1%. Normal multimer distribution.
CaseNOTHPOs: Not specified
CaseNOTHPOFreeText: Normal multimer size distribution (tested in Agarose gel).
CasePreviousTesting: Not reported
GenotypingMethod: Illumina NGS, custom designed panel covering all 52 exons as well as intronic flanking regions and promoter region of VWF gene.
PreviouslyPublished: None
Gene: VWF
Variant: c.6599-2A>G
HGVS: NM_000552.4:c.6599-2A>G
ClinVarID: Not available
CAID: CA383490280
gnomAD: Not available
VWD1-115.619.50.807214.0NormalExon 13c.1496A>C‡p.Gln499ProD2Missense
Case: Croatian adult patient
DiseaseAssertion: VWD1
FamilyInfo: Not specified
ParentalGenotype(s): Not specified
CasePresentingHPOs: HP:0001892, HP:0011890, HP:0000132, HP:0002239, HP:0000790, HP:0001342
CaseHPOFreeText: Reduced VWF:Ag of 19.5%, and VWF:GPIbM of 15.6% and VWF:CBA of 14%. Normal FVIII:C of 72%. Normal multimer distribution.
CaseNOTHPOs: Not specified
CaseNOTHPOFreeText: Normal multimer size distribution (tested in Agarose gel).
CasePreviousTesting: Not reported
GenotypingMethod: Illumina NGS, custom designed panel covering all 52 exons as well as intronic flanking regions and promoter region of VWF gene.
PreviouslyPublished: None
Gene: VWF
Variant: c.1496A>C
HGVS: NM_000552.4:c.1496A>C (p.Gln499Pro)
ClinVarID: Not available
CAID: CA383500550
gnomAD: Not available
I : 3
Case#: F10, I:3
DiseaseAssertion: Type 2 VWD
CaseHPOFreeText: complete loss of high MWM, VWF:Ag = 50; VWF:RCo = 6; VWF:GPIbM = 29; 0.12; 0.58; 4.82
CasePreviousTesting: Not clearly described
Gene: VWF
Variant: p.[R1306W];[=]
HGVS: c.3916C>T (p.Arg1306Trp)
CAID: CA114123
gnomAD: absent from gnomad v4.1.0
I : 1
Case#: F10, I:1
DiseaseAssertion: Type 2 VWD
CaseHPOFreeText: complete loss of high MWM, VWF:Ag = 82; VWF:RCo = 27; VWF:GPIbM = 97; 0.33; 1.19; 3.62
CasePreviousTesting: Not clearly described
Gene: VWF
Variant: p.[R1306W];[=]
HGVS: c.3916C>T (p.Arg1306Trp)
CAID: CA114123
gnomAD: absent from gnomad v4.1.0
I : 1
Case#: F9, I:1
DiseaseAssertion: Type 2 VWD
CaseHPOFreeText: complete loss of high MWM, VWF:Ag = 23; VWF:RCo = 7; VWF:GPIbM = 21; 0.29; 0.93; 3.18
CasePreviousTesting: Not clearly described
Gene: VWF
Variant: p.[R1306W];[=]
HGVS: c.3916C>T (p.Arg1306Trp)
CAID: CA114123
gnomAD: absent from gnomad v4.1.0
I : 1
Case#: F1, I:1
DiseaseAssertion: Type 2 VWD
CaseHPOFreeText: all mutimers present, VWF:Ag = 63; VWF:RCo = 56; VWF:GPIbM = 52; VWF:RCo/VWF:Ag = 0.88; VWF:GPIbM/VWF:Ag = 0.82; VWF:GPIbM/VWF:RCo = 0.93
CasePreviousTesting: Not clearly described
Gene: VWF
Variant: p.[V1229G; N1231T; P1266L]; [=]
HGVS: NM_000552.5(VWF):c.3686T>G (p.Val1229Gly), NM_000552.5(VWF):c.3797C>T (p.Pro1266Leu)
CAID: CA228433, CA114170
II : 1
Case#: F20, II:1
DiseaseAssertion: Type 2 VWD
CaseHPOFreeText: loss of high and intermediate MWMs, VWF:Ag = 45; VWF:RCo = 7; VWF:GPIbM = 43; 0.16; 0.95; 6.11
CasePreviousTesting: Not clearly described
Gene: VWF
Variant: p.[V1316M];[=]
HGVS: c.3946G>A (p.Val1316Met)
CAID: CA114127
gnomAD: absent from gnomad v4.1.0
Case: Case 1, male, 13yo at assessment, symptom onset at 45 days old
DiseaseAssertion: Platelet-type VWD (PT-VWD)
FamilyInfo: 1 symptomatic sister (menorrhagia, hemorrhagic follicular cyst); 1 asymptomatic sister; 3 brothers: twin died at 45days old due to leukemia, 1 symptomatic with daily epistaxis, 1 asymptomatic; father had bleeding symptoms; mom had severe bleeding with c-section requiring hysterectomy
ParentalGenotype(s): NA
CasePresentingHPOs: HP:0001973, HP:0001892, HP:0000421, HP:0000979, HP:0001873, HP:0002090, HP:0000023, HP:0030132, HP:0011871
(Autoimmune thrombocytopenia, abnormal bleeding, epistaxis, purpura, thrombocytopenia, pneumonia, inguinal hernia, Absence of large von Willebrand factor multimers, impaired RIPA)
CaseHPOFreeText: bleeding treated with intravenous gamma-globulin (IVIg) and corticosteroids, laparoscopic splenectomy complicated by massive intraperitoneal bleeding, multiple bone marrow aspirations performed; born via c-section of twin pregnancy due to placenta previa; mepacrine uptake assay by flow cytometry was normal, Blood smear showed very large platelets with clear signs of activation and pseudopods; Platelet (×109/L) = 95, Factor VIII (IU/mL) = 1.00, VWF:Ag (IU/mL) = 1.29, VWF:RCo (IU/mL) = 0.28, VWF:CB (IU/mL) = 0.70, RCo/Ag ratio = 0.22, CB/Ag ratio = 0.54, VWF: HMW Multimers = partial loss
CaseNOTHPOs: NA
CaseNOTHPOFreeText: NA
CasePreviousTesting: NA
GenotypingMethod: NA
PreviouslyPublished: NA
Gene: GP1BA
Variant: c.763A>G (p.Met255Val)
HGVS: NM_000173.7(GP1BA):c.763A>G (p.Met255Val)
ClinVarID: 4155; https://www.ncbi.nlm.nih.gov/clinvar/variation/4155/
CAID:
gnomAD: absent
Case: Case 4, female, 5yo at onset, 20yo at report
DiseaseAssertion: Platelet-type VWD (PT-VWD)
FamilyInfo: Fhx of VWD; father diagnosed with type 2B VWD
ParentalGenotype(s): NA
CasePresentingHPOs: HP:0000978, HP:0000421, HP:0000132, HP:0001873, HP:0004846
(easy bruising, epistaxis, menorrhagia, thrombocytopenia, Prolonged bleeding after surgery)
CaseHPOFreeText: pregnancy complicated by thrombocytopenia, Platelet aggregation studies were normal to ADP, epinephrine, collagen, and arachidonic; Platelet (×109/L) = 156, Factor VIII (IU/mL) = ND, VWF:Ag (IU/mL) = 0.57, VWF:RCo (IU/mL) = 0.86, VWF:CB (IU/mL) = ND, RCo/Ag ratio = 1.15, CB/Ag ratio = ND, VWF: HMW Multimers = normal
CaseNOTHPOs: NA
CaseNOTHPOFreeText: NA
CasePreviousTesting: no mutations in exon 28 of the VWF gene
GenotypingMethod: NA
PreviouslyPublished: NA
Gene: GP1BA
Variant: c.746G>T (p.Gly249Val)
HGVS: NM_000173.7(GP1BA):c.746G>T (p.Gly249Val)
ClinVarID: 4153; https://www.ncbi.nlm.nih.gov/clinvar/variation/4153/
CAID:
gnomAD: absent
Case#: 01028, Age 8, Male, Blood type O+( Table S3)
Disease Assertion: VWD 1
FamilyInfo: Not listed
Parental Genotype: Not listed
CasePresentingHPOs: N/A
CaseHPOFreeText: Bleeding score 7, VWF:Ag: 21, VWF:RCo: 33, FVIII:C: 34, VWF:CB: 30
CaseNotHPOs: N/A
CaseNotHPOFreeText: N/A
Protein Expression: N/A
CasePreviousTesting: 48,48 Access-Array amplification. NGS Molecular analysis was performed. Sanger sequencing was used to validate selected mutations.
Gene: VWF
Variant: NM_000552.4:c.4751A>G (p.Tyr1584Cys) and NM_000552.3:c.5312-19A>C
ClinVar: 310 and 806794
CAID: CA114162 and CA6402297 CAID1 CAID2
gnomAD: MAF of 0.004024 (519/128972 alleles) in the European (non-Finnish) population (CA114162). MAF of 0.002507 (26/10370 alleles) in the Ashkenazi Jewish population.
Case#: 23013, Age 46, Female, Blood Type O+ (Table S3)
Disease Assertion: VWD 1
FamilyInfo: The patient is the member of Family #2309.
Parental Genotype: Not listed
CasePresentingHPOs: N/A
CaseHPOFreeText: Bleeding Score 0, VWF:Ag: 33, VWF:RCo: 27.5, FVIII:C:56, VWF:CB:26
CaseNotHPOs: N/A
CaseNotHPOFreeText: N/A
Protein Expression: N/A
CasePreviousTesting: 48,48 Access-Array amplification. NGS Molecular analysis was performed. Sanger sequencing was used to validate selected mutations
Gene: VWF
Variant: NM_000552.4:c.6911G>A (p.Cys2304Tyr)
ClinVar: 100451 ClinVar
CAID: CA228762 CAID
gnomAD: N/A
Case#: 36004, Age 69, Female, Blood Type O- (Table S3)
Disease Assertion: VWD 1
FamilyInfo: The patient is the only member of Family#3603.
Parental Genotype: Not listed
CasePresentingHPOs: N/A
CaseHPOFreeText: VWF:Ag: 22, VWF:RCo:18.5, FVIII:C: 19, VWF:CB: 19
CaseNotHPOs: N/A
CaseNotHPOFreeText: Bleeding Score 3
Protein Expression: N/A
CasePreviousTesting: 48,48 Access-Array amplification. NGS Molecular analysis was performed. Sanger sequencing was used to validate selected mutations.
Gene: VWF
Variant: NM_000552.4:c.2546+55G>T (p.=)
ClinVar: N/A
CAID: N/A
gnomAD: N/A
Case#: 10003, Age 33, Male, Blood Type A+ (Table S3)
Disease Assertion: VWD1
FamilyInfo: The patient and one other patient are members of Family#1002. The second member has the same exonic variant and also has an intronic variant.
Parental Genotype: Not listed
CasePresentingHPOs: N/A
CaseHPOFreeText: Bleeding Score 1, VWF:Ag:7.4, VWF:RCo: 7.2, FVIII:C:11, VWF:CB: 6.3
CaseNotHPOs: N/A
CaseNotHPOFreeText: N/A
Protein Expression: N/A
CasePreviousTesting: 48,48 Access-Array amplification. NGS Molecular analysis was performed. Sanger sequencing was used to validate selected mutations
Gene: VWF
Variant: NM_000552.4:c.3614G>A (p.Arg1205His)
ClinVar: 308 ClinVar
CAID: CA114160 CAID
gnomAD: N/A
Molecular and clinical profile of von Willebrand disease in Spain (PCM-EVW-ES): comprehensive genetic analysis by next-generation sequencing of 480 patients
PMID: 28971901
Gene: von Willebrand Disease (VWF)
Case#: 36001, Age 5, Male, Blood Type A+ (Table S3)
Disease Assertion: VWD 1
FamilyInfo: The patient is the only member of Family#3601.
Parental Genotype: Not listed
CasePresentingHPOs: N/A
CaseHPOFreeText: VWF:Ag: 33, VWF:RCo: 26.4, FVIII:C: 88, VWF:CB: 58
CaseNotHPOs: N/A
CaseNotHPOFreeText: Bleeding Score 2
Protein Expression: N/A
CasePreviousTesting: 48,48 Access-Array amplification. NGS Molecular analysis was performed. Sanger sequencing was used to validate selected mutations.
Gene: VWF
Variant: NM_000552.4(VWF):c.5170+10C>T (p.=) and NM_000552.4(VWF):c.7730-1G>C (p.=)
ClinVar: 100418 and 100485 ClinVar1 ClinVar2
CAID: CA228702 and CA228816 CAID1 CAID2
gnomAD: MAF of 0.01298 (326/ 25116 alleles) in the European (Finnish) population (CA228702). gnomAD
Case#: 22006, Age 58, Male, Blood Type O+ (Table S3)
Disease Assertion: VWD 1
FamilyInfo: The patient is one of 2 patients in Family# 2206. Patient 22007's variant information was not described.
Parental Genotype: Not listed
CasePresentingHPOs: N/A
CaseHPOFreeText: Bleeding Score 7, VWF:Ag: 27, VWF:RCo: 20, FVIII:C: 12, VWF:CB:22
CaseNotHPOs: N/A
CaseNotHPOFreeText: N/A
Protein Expression: N/A
CasePreviousTesting: 48,48 Access-Array amplification. NGS Molecular analysis was performed. Sanger sequencing was used to validate selected mutations
Gene: VWF
Variant:NM_000552.4:c.1001G>A (p.Gly334Glu) and NM_000552.4(VWF):c.2561G>A (p.Arg854Gln)
ClinVar: 626947 and 296 ClinVar1 ClinVar2
CAID: CA232322015 and CA114139 CAID1 CAID2
gnomAD: MAF of 0.000008824 (1/11326 alleles) in the European (non-Finnish) population (CA232322015). gnomAD1
MAF of 0.005692 (143/25122 alleles) in the European (Finnish) population (CA114139). gnomAD2
Case#: 13010, Age 37, Female, Blood Type O+ (Table S3)
Disease Assertion: VWD1
FamilyInfo: The patient is one of two members of Family#1308. Patient 13011 has one of the same exonic variant but has one different exonic variant (c.546G>A).
Parental Genotype: Not listed
CasePresentingHPOs: N/A
CaseHPOFreeText: Bleeding Score 18, VWF:Ag:16, VWF:RCo:15.1, FVIII:C:45, VWF:CB14
CaseNotHPOs: N/A
CaseNotHPOFreeText:N/A
Protein Expression: N/A
CasePreviousTesting: 48,48 Access-Array amplification. NGS Molecular analysis was performed. Sanger sequencing was used to validate selected mutations
Gene: VWF
Variant: NM_000552.4:c.1472G>C(p.Arg491Pro) and NM_000552.4:c.546G>A (p.=)
ClinVar: 256684 ClinVar
CAID: CA383500718 and CA6403759 [CAID1] (http://reg.clinicalgenome.org/redmine/projects/registry/genboree_registry/by_caid?caid=CA383500718)
gnomAD: MAF of 0.002398 (85/35440 alleles) in the Latino population (CA6403759).
Case#: 30037, Age 69, Male, Blood Type O+ (Table S3)
Disease Assertion: VWD 1
FamilyInfo: The patient is the only member of Family# 3013
Parental Genotype: Not listed
CasePresentingHPOs: N/A
CaseHPOFreeText: VWF:Ag: 20, VWF:RCo: 17, FVIII:C: 25, VWF:CB: 13
CaseNotHPOs: N/A
CaseNotHPOFreeText: Bleeding Score 1
Protein Expression: N/A
CasePreviousTesting: 48,48 Access-Array amplification. NGS Molecular analysis was performed. Sanger sequencing was used to validate selected mutations.
Gene: VWF
Variant: NM_000552.4:c.5336G>T (p.Arg1779Leu)
ClinVar: N/A
CAID: CA383495656 CAID
gnomAD:MAF of 0.00002891 (1/ 34592 alleles) in the Latino population. gnomAD
Case#: 13012, Age 42, Male, Blood Type A+ (Table S3)
Disease Assertion: VWD 1
FamilyInfo: The patient is the only member of Family#1309.
Parental Genotype: Not listed
CasePresentingHPOs: N/A
CaseHPOFreeText: Bleeding score 7, VWF:Ag:14, VWF:RCo:9, FVIII:C: 20, VWF:CB:11
CaseNotHPOs: N/A
CaseNotHPOFreeText: N/A
Protein Expression: N/A
CasePreviousTesting: 48,48 Access-Array amplification. NGS Molecular analysis was performed. Sanger sequencing was used to validate selected mutations
Gene: VWF
Variant: NM_000552.4:c.3614G>A (p.Arg1205His) and
ClinVar: 308 ClinVar
CAID: CA114160 and CA6403769 CAID1 CAID2
gnomAD: MAF of 0.0005784 (20/34578 alleles) in the Latino population (CA6403769). gnomAD
Case#: 21023, Age 43, Female, Blood Type O+ (Table S3)
Disease Assertion: VWD 1
FamilyInfo: The patient is the only member of Family #2120.
Parental Genotype: Not listed
CasePresentingHPOs: N/A
CaseHPOFreeText: VWF:Ag:7.6, VWF:RCo:6, FVIII:C: 11, VWF:CB:3.9
CaseNotHPOs: N/A
CaseNotHPOFreeText: Bleeding Score 2
Protein Expression: N/A
CasePreviousTesting: 48,48 Access-Array amplification. NGS Molecular analysis was performed. Sanger sequencing was used to validate selected mutations
Gene: VWF
Variant: NM_000552.4:c.1110-26T>A (p.=) , NM_000552.4:c.2103C>T (p.Cys701=), and NM_000552.4:c.6248G>A (p.Gly2083Asp)
ClinVar: 310076 ClinVar1
CAID: CA6403542 , CA6403175, and CA383492072 CAID1 CAID2 CAID3
gnomAD: MAF of 0.008911 (222/ 24914 alleles) in the African population (CA6403542). MAF of 0.005928 (148/ 24968 alleles) in the African population (CA6403175). gnomAD1
Case#: 23012, Age 32, Female, Blood Type O+ (Table S3)
Disease Assertion: VWD 1
FamilyInfo: The patient is one of two members of Family# 2308. Patient 23011 has an additional exonic variant.
Parental Genotype: Not listed
CasePresentingHPOs:N/A
CaseHPOFreeText: Bleeding score 12, VWF:Ag:7, VWF:RCo:5.3, FVIII:C:6.5, VWF:CB:6
CaseNotHPOs: N/A
CaseNotHPOFreeText: N/A
Protein Expression: N/A
CasePreviousTesting:48,48 Access-Array amplification. NGS Molecular analysis was performed. Sanger sequencing was used to validate selected mutations
Gene: VWF
Variant:NM_000552.4:c.3614G>A (p.Arg1205His)
ClinVar: 308 ClinVar
CAID:CA114160 CAID
gnomAD: N/A
Case#: 35003, Age 75, Female, Blood Type A- (Table S3)
Disease Assertion: VWD 1
FamilyInfo: The patient is one of two members in Family# 3502.
Parental Genotype: Not listed
CasePresentingHPOs: N/A
CaseHPOFreeText: VWF:Ag: 6.6, VWF:RCo: 8.5, FVIII:C:13, VWF:CB: 11
CaseNotHPOs: N/A
CaseNotHPOFreeText: Bleeding Score 2
Protein Expression: N/A
CasePreviousTesting: 48,48 Access-Array amplification. NGS Molecular analysis was performed. Sanger sequencing was used to validate selected mutations.
Gene: VWF
Variant: NM_000552.4:c.3614G>A (p.Arg1205His)
ClinVar: 308 ClinVar
CAID: CA114160 CAID
gnomAD: N/A
Case#: 13001, Age 61, Female, Blood Type O+ (Table S3)
Disease Assertion: VWD 1
FamilyInfo: The patient was the only member of Family# 1301.
Parental Genotype: Not listed
CasePresentingHPOs: N/A
CaseHPOFreeText: Bleeding Score 27, VWF:Ag: 11, VWF:RCo: 9.7, FVIII:C: 36, VWF:CB: 12
CaseNotHPOs: N/A
CaseNotHPOFreeText: N/A
Protein Expression: N/A
CasePreviousTesting: 48,48 Access-Array amplification. NGS Molecular analysis was performed. Sanger sequencing was used to validate selected mutations
Gene: VWF
Variant: NM_000552.4:c.7985A>G
ClinVar: N/A
CAID: CA383487641 CAID
gnomAD: N/A
Case#: 02042, Age 41, Male, Blood Type: O+ (Table S3)
Disease Assertion: VWD 1
FamilyInfo: Family#: 0215; 5 Members of the family were included in the study. 1 was diagnosed type 3 (patient 02039) and the other 4 were carriers for VW
Parental Genotype: Not listed
CasePresentingHPOs:
CaseHPOFreeText: VWF:Ag: 25, VWF:RCo: 21, FVIII:C:77, VWF:CB: 27
CaseNotHPOs:
CaseNotHPOFreeText: Bleeding score 1
Protein Expression:
CasePreviousTesting: 48,48 Access-Array amplification. NGS Molecular analysis was performed. Sanger sequencing was used to validate selected mutations.
Gene: VWF
Variant: NM_000552.4:c.1109G>A
ClinVar: N/A
CAID:CA6403559
gnomAD: MAF of 0.000008802 (1/113608 alleles) in the European (non-Finnish population). gnomAD
Case#: 02074, Age 37, Female, Blood Type A+ (Table S3)
Disease Assertion: VWD 1
FamilyInfo: Patient was the only member of family #0228.
Parental Genotype: Not listed
CasePresentingHPOs: N/A
CaseHPOFreeText: Bleeding Score 3, VWF:Ag: 24, VWF:RCo: 21, FVIII:C: 111, VWF:CB: 29
CaseNotHPOs: N/A
CaseNotHPOFreeText: N/A
Protein Expression: N/A
CasePreviousTesting: 48,48 Access-Array amplification. NGS Molecular analysis was performed. Sanger sequencing was used to validate selected mutations
Gene: VWF
Variant: NM_000552.4(VWF):c.3426T>C (p.Cys1142=), NM_000552.4:c.6254G>T (p.Cys2085Phe), and NM_000552.4:c.3485_3486inv (p.Pro1162Leu)
ClinVar: 256668 and 619934 ClinVar ClinVar2
CAID: CA6402757, CA383492060, and CA658683073
gnomAD: MAF of 0.2228 (2240/10052 alleles) in the African population (CA6402757).
Case#: 27032, Age 49, Female, Blood Type O+
Disease Assertion: VWD 1
FamilyInfo: The patient is one of two members of Family#2716. The other member has the same variant, but is only a carrier.
Parental Genotype: Not listed
CasePresentingHPOs: N/A
CaseHPOFreeText: Bleeding Score 8, VWF:Ag:31, VWF:RCo: 22.7, FVIII:C: 72, VWF:CB: 38
CaseNotHPOs: N/A
CaseNotHPOFreeText: N/A
Protein Expression: N/A
CasePreviousTesting: 48,48 Access-Array amplification. NGS Molecular analysis was performed. Sanger sequencing was used to validate selected mutations.
Gene: VWF
Variant: NM_000552.4:c.2518G>T (p.Glu840Ter)
ClinVar: N/A
CAID:CA383520331 CAID
gnomAD: N/A
Case#: 06012, Age 10, Male, Blood Type O+ (Table S3)
Disease Assertion: VWD1
FamilyInfo: Patient is member of Family# 0609, which includes 3 individuals. All members of the family have the same variant.
Parental Genotype: Not listed
CasePresentingHPOs: N/A
CaseHPOFreeText: Bleeding score 10, VWF:Ag: 13, VWF:RCo:14, FVIII:C:40, VWF:CB:13
CaseNotHPOs: N/A
CaseNotHPOFreeText: N/A
Protein Expression: N/A
CasePreviousTesting: 48,48 Access-Array amplification. NGS Molecular analysis was performed. Sanger sequencing was used to validate selected mutations.
Gene: VWF
Variant: NM_000552.4:c.3363G>T (p.Arg1121Ser)
ClinVar: N/A
CAID: CA383511875 CAID
gnomAD: N/A
Case#: 02064, Age 32, Male, Blood type O- (Table S3)
Disease Assertion: VWD 1
FamilyInfo: Patient is a part of family # 0224. There are 3 other members of the family (02065, 02066, 02067). All members of the family have the same variant.
Parental Genotype: Not listed
CasePresentingHPOs: N/A
CaseHPOFreeText: Bleeding score 13, VWF:Ag: 4.7, VWF:RCo: 5, FVIII:C: 16, VWF:CB:6
CaseNotHPOs: N/A
CaseNotHPOFreeText: N/A
Protein Expression: N/A
CasePreviousTesting: 48,48 Access-Array amplification. NGS Molecular analysis was performed. Sanger sequencing was used to validate selected mutations
Gene:VWF
Variant: NM_000552.4:c.3614G>A (p.Arg1205His)
ClinVar: 308
CAID: CA114160
gnomAD: N/A
Case#: 27024, Age 56, Female, Blood Type A+ (Table S3)
Disease Assertion: VWD 1
FamilyInfo: The patient is the only member of Family#2713.
Parental Genotype: Not listed
CasePresentingHPOs: N/A
CaseHPOFreeText: VWF:Ag:5.3, VWF:RCo:6, FVIII:C:38, VWF:CB:4.2
CaseNotHPOs: N/A
CaseNotHPOFreeText: Bleeding Score 3
Protein Expression: N/A
CasePreviousTesting: 48,48 Access-Array amplification. NGS Molecular analysis was performed. Sanger sequencing was used to validate selected mutations.
Gene: VWF
Variant: NM_000552.4:c.3467C>T (p.Thr1156Met) and c.-3151T>G
ClinVar: 100264 ClinVar
CAID: CA228414 CAID
gnomAD: N/A
Case#: 06024, Age 36, Female, Blood Type O+ (Table S3)
Disease Assertion: VWD1
FamilyInfo: The patient is the only member of Family#0617.
Parental Genotype: Not listed
CasePresentingHPOs: N/A
CaseHPOFreeText: Bleeding Score 1, VWF:Ag:35, VWF:RCo:25, FVIII:C:69, VWF:CB: 27
CaseNotHPOs: N/A
CaseNotHPOFreeText: N/A
Protein Expression:N/A
CasePreviousTesting: 48,48 Access-Array amplification. NGS Molecular analysis was performed. Sanger sequencing was used to validate selected mutations
Gene: VWF
Variant: NM_000552.4:c.7300C>T (p.Arg2434Ter)
ClinVar: 100464 ClinVar
CAID: CA228781 CAID
gnomAD: MAF of 0.0001298 (2/15414 alleles) in the European (non-Finnish) population. gnomAD
A discontinuous autoinhibitory module masks the A1 domain of von Willebrand factor
PMID: 28692141
Gene: VWF
HGNCID: 12726
Differential diagnosis of neonatal alloimmune thrombocytopenia: Type 2B von Willebrand disease.
PMID: 28436749
Gene: VWF
HGNCID: 12726
Case: P54, Chinese, female, 30yo
DiseaseAssertion: VWD2A
FamilyInfo: both parents had mild type 1 VWD, a second undetected variant may exist in patient
ParentalGenotype(s): NA
CasePresentingHPOs: HP:0012147
(Reduced quantity of VWF)
CaseHPOFreeText: type A blood, bleeding score = 4; VWF:Ag (%) = 27.0, VWF:RCo (%) = 1.8, FVIII:C (%) = 44.6, VWF:CB (%) = 1.1, VWFpp (%) = 11.2, VWF:RCo/VWF:Ag = 0.1, VWF:CB/VWF:Ag = 0.0, VWFpp/VWF:Ag = 0.4, FVIII:C/VWF:Ag = 1.7
CaseNOTHPOs:
CaseNOTHPOFreeText:
CasePreviousTesting: NA
GenotypingMethod: NGS
PreviouslyPublished: NA
Gene: VWF
Variant: c.875–5T>G - Unregistered Variant
HGVS: NA
ClinVarID: NA
CAID: NA
gnomAD: NA
Case: P43, Chinese, male, 7yo
DiseaseAssertion: VWD2N
FamilyInfo: NA
ParentalGenotype(s): NA
CasePresentingHPOs: HP:0012147
(Reduced quantity of VWF)
CaseHPOFreeText: type B blood, bleeding score = 3; VWF:Ag (%) = 48.8, VWF:RCo (%) = 49.9, FVIII:C (%) = 6.4, VWF:CB (%) = 63.9, VWFpp (%) = 52.4, VWF:RCo/VWF:Ag = 0.9, VWF:CB/VWF:Ag = 1.3, VWFpp/VWF:Ag = 1.1, FVIII:C/VWF:Ag = 0.1, VWF: FVIIIB (%) = 0.0
CaseNOTHPOs:
CaseNOTHPOFreeText:
CasePreviousTesting: NA
GenotypingMethod: NGS
PreviouslyPublished: NA
Gene: VWF
Variant 1: c.2372C>T (p.Thr791Met)
HGVS: NM_000552.4(VWF):c.2372C>T (p.Thr791Met)
ClinVarID: 294; https://www.ncbi.nlm.nih.gov/clinvar/variation/294/
CAID: NA
gnomAD: MAF = 0.00003984 (1/25100 alleles) in European (Finnish) population; https://gnomad.broadinstitute.org/variant/12-6153527-G-A?dataset=gnomad_r2_1
Variant 2: c.2574C>G (p.Cys858Trp)
HGVS: NM_000552.5:c.2574C>G (p.Cys858Trp)
ClinVarID: NA
CAID: CA232299278; http://reg.clinicalgenome.org/redmine/projects/registry/genboree_registry/by_caid?caid=CA232299278
gnomAD: MAF = 0.0001002 (2/19954 alleles) in the East Asian population; https://gnomad.broadinstitute.org/variant/12-6143965-G-C
Case: P73, Chinese, female, 16yo
DiseaseAssertion: VWD1
FamilyInfo: NA
ParentalGenotype(s): NA
CasePresentingHPOs: HP:0012147
(Reduced quantity of VWF)
CaseHPOFreeText: type O blood, bleeding score = 2; VWF:Ag (%) = 29.6, VWF:RCo (%) = 35.4, FVIII:C (%) = 63.1, VWF:CB (%) = 35.0, VWFpp (%) = 78.3, VWF:RCo/VWF:Ag = 1.2, VWF:CB/VWF:Ag = 1.2, VWFpp/VWF:Ag = 2.6, FVIII:C/VWF:Ag = 2.1
CaseNOTHPOs:
CaseNOTHPOFreeText:
CasePreviousTesting: NA
GenotypingMethod: NGS
PreviouslyPublished: NA
Gene: VWF
Variant: c.2279G>A (p.Arg760His)
HGVS: NM_000552.4(VWF):c.2279G>A (p.Arg760His)
ClinVarID: 31011; https://www.ncbi.nlm.nih.gov/clinvar/variation/31011/
CAID: NA
gnomAD: MAF = 0.00008009 (2/24972 alleles) in African/African-American population; https://gnomad.broadinstitute.org/variant/12-6155891-C-T?dataset=gnomad_r2_1
Case: P18, Chinese, male, 23yo
DiseaseAssertion: VWD2A
FamilyInfo: NA
ParentalGenotype(s): NA
CasePresentingHPOs: HP:0012147
(Reduced quantity of VWF)
CaseHPOFreeText: type O blood, bleeding score = 7; VWF:Ag (%) = 25.0, VWF:RCo (%) = 5.2, FVIII:C (%) = 39.0, VWF:CB (%) = 6.7, VWFpp (%) = 49.6, VWF:RCo/VWF:Ag = 0.2, VWF:CB/VWF:Ag = 0.3, VWFpp/VWF:Ag = 2.0, FVIII:C/VWF:Ag = 1.6
CaseNOTHPOs:
CaseNOTHPOFreeText:
CasePreviousTesting: NA
GenotypingMethod: NGS
PreviouslyPublished: NA
Gene: VWF
Variant: c.4735G>A (p.Gly1579Arg)
HGVS: NM_000552.4(VWF):c.4735G>A (p.Gly1579Arg)
ClinVarID: 100385; https://www.ncbi.nlm.nih.gov/clinvar/variation/100385/
CAID: NA
gnomAD: absent
Case: P74, Chinese, female, 26yo
DiseaseAssertion: VWD1
FamilyInfo: NA
ParentalGenotype(s): NA
CasePresentingHPOs: HP:0012147
(Reduced quantity of VWF)
CaseHPOFreeText: type A blood, bleeding score = 10; VWF:Ag (%) = 4.7, VWF:RCo (%) = 4.1, FVIII:C (%) = 31.0, VWF:CB (%) = 3.6, VWFpp (%) = 5.2, VWF:RCo/VWF:Ag = 0.9, VWF:CB/VWF:Ag = 0.8, VWFpp/VWF:Ag = 1.1, FVIII:C/VWF:Ag = 6.6, RIPA (1.2 mg/ml, %) = 93.4
CaseNOTHPOs:
CaseNOTHPOFreeText:
CasePreviousTesting: NA
GenotypingMethod: NGS
PreviouslyPublished: NA
Gene: VWF
Variant 1: c.-1+3A>C
HGVS: NA
ClinVarID: NA
CAID: NA
gnomAD: NA
Variant 2: c.3322G>C (p.Ala1108Pro)
HGVS: NM_000552.3:c.3322G>C (p.Ala1108Pro)
ClinVarID: NA
CAID: CA383512138; http://reg.clinicalgenome.org/redmine/projects/registry/genboree_registry/by_caid?caid=CA383512138
gnomAD: absent
Case: P23, Chinese, female 23
DiseaseAssertion: VWD3
FamilyInfo: NA
ParentalGenotype(s): NA
CasePresentingHPOs: HP:0012147
(Reduced quantity of VWF)
CaseHPOFreeText: type O blood, bleeding score = 14; VWF:Ag (%) = 1.0, VWF:RCo (%) = 0.9, FVIII:C (%) = 4.7, VWF:CB (%) = 0.8, VWFpp (%) = 0.7, VWF:RCo/VWF:Ag = 0.9, VWF:CB/VWF:Ag = 0.8, VWFpp/VWF:Ag = 0.8, FVIII:C/VWF:Ag = 5.6
CaseNOTHPOs:
CaseNOTHPOFreeText:
CasePreviousTesting: NA
GenotypingMethod: NGS
PreviouslyPublished: NA
Gene: VWF
Variant: c.7361C>A (p.Thr2454Asn)
HGVS: NM_000552.5:c.7361C>A (p.Thr2454Asn)
ClinVarID: NA
CAID: CA6401695; http://reg.clinicalgenome.org/redmine/projects/registry/genboree_registry/by_caid?caid=CA6401695
gnomAD: MAF = 0.0003263 (6/18390 alleles) in the East Asian population; https://gnomad.broadinstitute.org/variant/12-6085353-G-T
Case: P90, Chinese, female, 30yo
DiseaseAssertion: VWD2A
FamilyInfo: NA
ParentalGenotype(s): NA
CasePresentingHPOs: HP:0012147
(Reduced quantity of VWF)
CaseHPOFreeText: type O blood, bleeding score = 12; VWF:Ag (%) = 10.1, VWF:RCo (%) = 3.3, FVIII:C (%) = 10.7, VWF:CB (%) = 2.6, VWFpp (%) = 151.7, VWF:RCo/VWF:Ag = 0.3, VWF:CB/VWF:Ag = 0.3, VWFpp/VWF:Ag = 15.0, FVIII:C/VWF:Ag = 1.1
CaseNOTHPOs:
CaseNOTHPOFreeText:
CasePreviousTesting: NA
GenotypingMethod: NGS
PreviouslyPublished: NA
Gene: VWF
Variant 1: c.1730-2A>G
HGVS: NM_000552.4(VWF):c.1730-2A>G
ClinVarID: 100189; https://www.ncbi.nlm.nih.gov/clinvar/variation/100189/
CAID: NA
gnomAD: absent
Variant 2: c.6979T>A (p.Cys2327Ser)
HGVS: NM_000552.3:c.6979T>A (p.Cys2327Ser)
ClinVarID: NA
CAID: CA383492042; http://reg.clinicalgenome.org/redmine/projects/registry/genboree_registry/by_caid?caid=CA383492042
gnomAD: absent
Case: P38, Chinese, female, 14yo
DiseaseAssertion: VWD3
FamilyInfo: NA
ParentalGenotype(s): NA
CasePresentingHPOs: HP:0012147
(Reduced quantity of VWF)
CaseHPOFreeText: type O blood, bleeding score = 9; VWF:Ag (%) = 1.3, VWF:RCo (%) = 1.0, FVIII:C (%) = 4.5, VWF:CB (%) = 0.7, VWFpp (%) = 0.8, VWF:RCo/VWF:Ag = 0.8, VWF:CB/VWF:Ag = 0.5, VWFpp/VWF:Ag = 0.6, FVIII:C/VWF:Ag = 3.5
CaseNOTHPOs:
CaseNOTHPOFreeText:
CasePreviousTesting: NA
GenotypingMethod: NGS
PreviouslyPublished: NA
Gene: VWF
Variant 1: c.2684A>G (p.Gln895Arg)
HGVS: NM_000552.5:c.2684A>G (p.Gln895Arg)
ClinVarID: NA
CAID: CA383519914; http://reg.clinicalgenome.org/redmine/projects/registry/genboree_registry/by_caid?caid=CA383519914
gnomAD: NA
Variant 2: c.3043G>T (p.Glu1015Ter)
HGVS: NM_000552.5:c.3043G>T (p.Glu1015Ter)
ClinVarID: NA
CAID: CA383514739; http://reg.clinicalgenome.org/redmine/projects/registry/genboree_registry/by_caid?caid=CA383514739
gnomAD: absent
Case: P87, Chinese, female, 27yo
DiseaseAssertion: VWD1
FamilyInfo: NA
ParentalGenotype(s): NA
CasePresentingHPOs: HP:0012147
(Reduced quantity of VWF)
CaseHPOFreeText: type O blood, bleeding score = 3; VWF:Ag (%) = 55.9, VWF:RCo (%) = 55.8, FVIII:C (%) = 70.1, VWF:CB (%) = 61.3, VWFpp (%) = 88.0, VWF:RCo/VWF:Ag = 1.0, VWF:CB/VWF:Ag = 1.1, VWFpp/VWF:Ag = 1.6, FVIII:C/VWF:Ag = 1.3
CaseNOTHPOs:
CaseNOTHPOFreeText:
CasePreviousTesting: NA
GenotypingMethod: NGS
PreviouslyPublished: NA
Gene: VWF
Variant: c.6860G>A (p.Arg2287Gln)
HGVS: NM_000552.3:c.6860G>A (p.Arg2287Gln)
ClinVarID: NA
CAID: CA6401877; http://reg.clinicalgenome.org/redmine/projects/registry/genboree_registry/by_caid?caid=CA6401877
gnomAD: MAF = 0.005415 (108/19946 alleles) in the East Asian population; https://gnomad.broadinstitute.org/variant/12-6094770-C-T
Case: P2, Chinese, female, 3yo
DiseaseAssertion: VWD1
FamilyInfo: NA
ParentalGenotype(s): NA
CasePresentingHPOs: HP:0012147
(Reduced quantity of VWF)
CaseHPOFreeText: type O blood, bleeding score = 4; VWF:Ag (%) = 55.0, VWF:RCo (%) = 53.0, FVIII:C (%) = 59.0, VWF:CB (%) = 47.0, VWFpp (%) = 57.4, VWF:RCo/VWF:Ag = 1.0, VWF:CB/VWF:Ag = 0.9, VWFpp/VWF:Ag = 1.0, FVIII:C/VWF:Ag = 1.1
CaseNOTHPOs:
CaseNOTHPOFreeText:
CasePreviousTesting: NA
GenotypingMethod: NGS
PreviouslyPublished: NA
Gene: VWF
Variant: c.6104G>A (p.Gly2035Asp)
HGVS: NM_000552.3:c.6104G>A (p.Gly2035Asp)
ClinVarID: NA
CAID: CA6402069; http://reg.clinicalgenome.org/redmine/projects/registry/genboree_registry/by_caid?caid=CA6402069
gnomAD: MAF = 0.005613 (112/19954 alleles; 2 homozygotes) in the East Asian population; https://gnomad.broadinstitute.org/variant/12-6103733-C-T
Case: P71, Chinese, female, 23yo
DiseaseAssertion: VWD1
FamilyInfo: NA
ParentalGenotype(s): NA
CasePresentingHPOs: HP:0012147
(Reduced quantity of VWF)
CaseHPOFreeText: type O blood, bleeding score = 1; VWF:Ag (%) = 57.9, VWF:RCo (%) = 55.6, FVIII:C (%) = 71.3, VWF:CB (%) = 69.7, VWFpp (%) = 66.9, VWF:RCo/VWF:Ag = 1.0, VWF:CB/VWF:Ag = 1.2, VWFpp/VWF:Ag = 1.2, FVIII:C/VWF:Ag = 1.2
CaseNOTHPOs:
CaseNOTHPOFreeText:
CasePreviousTesting: NA
GenotypingMethod: NGS
PreviouslyPublished: NA
Gene: VWF
Variant: c.4850A>G (p.Lys1617Arg)
HGVS: NM_000552.3:c.4850A>G (p.Lys1617Arg)
ClinVarID: NA
CAID: CA6402448; http://reg.clinicalgenome.org/redmine/projects/registry/genboree_registry/by_caid?caid=CA6402448
gnomAD: MAF = 0.0002507 (5/19942 alleles) in the East Asian population; https://gnomad.broadinstitute.org/variant/12-6127734-T-C
Case: P7, Chinese, female, 27yo
DiseaseAssertion: VWD1
FamilyInfo: NA
ParentalGenotype(s): NA
CasePresentingHPOs: HP:0012147
(Reduced quantity of VWF)
CaseHPOFreeText: type O blood, bleeding score = 9; VWF:Ag (%) = 5.4, VWF:RCo (%) = 5.3, FVIII:C (%) = 28, VWF:CB (%) = 4.1, VWFpp (%) = 4.8, VWF:RCo/VWF:Ag = 1.0, VWF:CB/VWF:Ag = 0.8, VWFpp/VWF:Ag = 0.9, FVIII:C/VWF:Ag = 5.2, RIPA (1.2 mg/ml, %) = 73.3
CaseNOTHPOs:
CaseNOTHPOFreeText:
CasePreviousTesting: NA
GenotypingMethod: NGS
PreviouslyPublished: NA
Gene: VWF
Variant 1: c.711C>G (p.Cys237Trp)
HGVS: NM_000552.3:c.711C>G (p.Cys237Trp)
ClinVarID: NA
CAID: CA383509260; http://reg.clinicalgenome.org/redmine/projects/registry/genboree_registry/by_caid?caid=CA383509260
gnomAD: absent
Variant: c.1109+47T>A - Unregistered Variant
HGVS: NA
ClinVarID: NA
CAID: NA
gnomAD: NA
Case: P10, Chinese, male, 5yo
DiseaseAssertion: VWD1
FamilyInfo: NA
ParentalGenotype(s): NA
CasePresentingHPOs: HP:0012147
(Reduced quantity of VWF)
CaseHPOFreeText: type A blood, bleeding score = 2; VWF:Ag (%) = 4.2, VWF:RCo (%) = 3.8, FVIII:C (%) = 30.1, VWF:CB (%) = 3.5, VWFpp (%) = 4.1, VWF:RCo/VWF:Ag = 0.9, VWF:CB/VWF:Ag = 0.8, VWFpp/VWF:Ag = 1.0, FVIII:C/VWF:Ag = 7.4, RIPA (1.2 mg/ml, %) = 40.1
CaseNOTHPOs:
CaseNOTHPOFreeText:
CasePreviousTesting: NA
GenotypingMethod: NGS
PreviouslyPublished: NA
Gene: VWF
Variant 1: c.7199delA (p.Asn2400Thrfs*4) - Unregistered Variant
HGVS: NA
ClinVarID: NA
CAID: NA
gnomAD: NA
Variant 2: c.8155+5G>C - Unregistered Variant
HGVS: NA
ClinVarID: NA
CAID: NA
gnomAD: NA
Case: P6, Chinese, male, 57yo
DiseaseAssertion: VWD2A
FamilyInfo: NA
ParentalGenotype(s): NA
CasePresentingHPOs: HP:0012147
(Reduced quantity of VWF)
CaseHPOFreeText: type AB blood, bleeding score = 15; VWF:Ag (%) = 18.5, VWF:RCo (%) = 5.8, FVIII:C (%) = 39.0, VWF:CB (%) = 4.9, VWFpp (%) = 36.4, VWF:RCo/VWF:Ag = 0.3, VWF:CB/VWF:Ag = 0.3, VWFpp/VWF:Ag = 2.0, FVIII:C/VWF:Ag = 2.1
CaseNOTHPOs:
CaseNOTHPOFreeText:
CasePreviousTesting: NA
GenotypingMethod: NGS
PreviouslyPublished: NA
Gene: VWF
Variant: c.3920T>G (p.Leu1307Arg)
HGVS: NM_000552.5:c.3920T>G (p.Leu1307Arg)
ClinVarID: NA
CAID: CA383506205; http://reg.clinicalgenome.org/redmine/projects/registry/genboree_registry/by_caid?caid=CA383506205
gnomAD: absent
Misfolding of vWF to Pathologically Disordered Conformations Impacts the Severity of von Willebrand Disease
PMID: 25185554
Gene: VWF
HGNC: 12726
Disease: von Willebrand disease type 2M
MONDO: 0015630
InheritancePattern: Autosomal Dominant
Prevalence: Overall VWD prevalence is estimated to be as high as 1 in 100 in the general population, with 1 in 10,000 pursuing tertiary care referral (PMID: 28847738).
Penetrance: Fully penetrant / nearly fully penetrant for most pathogenic type 2 variants
Abnormal von Willebrand factor secretion, factor VIII stabilization and thrombus dynamics in type 2N von Willebrand disease mice
PMID: 28581694
Gene: VWF
HGCNID: 12726
Upper motor neuron signs and early onset gait abnormalities in young children with bi-allelic VWA1 variants
PMID: 35975723
Gene: VWA1
HGNCID: 12726
A Unique Case of Type 3 Von Willebrand Disease
Gene: VWF
HGNCID: 12726
55 9 F 18 c.2303G.A p.R768Q Htz 3.2 ,1 9 + -
Case: 55, F, 9 years, Indian
DiseaseAssertion: VWD type 3
FamilyInfo: family history of disease, Consanguinity: no
ParentalGenotype: n/a
CasePresentingHPOs: n/a
CaseHPOFreeText: FVIII:C: (U/dl): 3.2, VWF:Ag (U/dl): <1, Bleeding Score: 9
CaseNotHPOs: n/a
CaseNotHPOFreeText: n/a
CasePreviousTesting: n/a
Gene: VWF
Variant:
c.2303G>A (p.Arg768Gln), Exon 18
Heterozygous
66 5 F 28 c.3862C.G p.L1288V Htz 1.4 2.3 6 - -c.3931C.T p.Q1311*c.3951C.T p.A1317Ac.4027A.G p.I1343V
Case: 66, F, 5 years, Indian
DiseaseAssertion: VWD type 3
FamilyInfo: no family history of disease, Consanguinity: no
ParentalGenotype: n/a
CasePresentingHPOs: n/a
CaseHPOFreeText: FVIII:C: (U/dl): 1.4, VWF:Ag (U/dl): 2.3, Bleeding Score: 6
CaseNotHPOs: n/a
CaseNotHPOFreeText: n/a
CasePreviousTesting: n/a
Gene: VWF
Variant:
c.3862C>G (p.Leu1288Val), Exon 28
c.3931C>T (p.Gln1311*), Exon 28
c.3951C>T (p.Ala1317Ala), Exon 28
c.4027A>G (p.Ile1343Val), Exon 28
Heterozygous
82 2 M 15 c.1830C.A p.Y610* Hmz 1.4 ,1 6 - -
Case: 82, M, 2 years, Indian
DiseaseAssertion: VWD type 3
FamilyInfo: Consanguinity: no, no family history of disease
ParentalGenotype: n/a
CasePresentingHPOs: n/a
CaseHPOFreeText: FVIII:C: (U/dl): 1.4, VWF:Ag (U/dl): <1, Bleeding Score: 6
CaseNotHPOs: n/a
CaseNotHPOFreeText: n/a
CasePreviousTesting: n/a
Gene: VWF
Variant:
c.1830C>A (p.Tyr610*), Exon 15, Homozygous
72 6 F 17 c.2208G.Tp.M736I Htz 2.5 4 4 - -
Case: 72, F, 6 years, Indian
DiseaseAssertion: VWD type 3
FamilyInfo: no family history of disease, Consanguinity: no
ParentalGenotype: n/a
CasePresentingHPOs: n/a
CaseHPOFreeText: FVIII:C: (U/dl): 2.5, VWF:Ag (U/dl): 4, Bleeding Score: 4
CaseNotHPOs: n/a
CaseNotHPOFreeText: n/a
CasePreviousTesting: n/a
Gene: VWF
Variant:
c.2208G>T (p.Met736Ile), Exon 17
Heterozygous
6 24 F 9 c.1093C.T p.R365* Hmz 1 ,1 22 - +
Case: 6, F, 24 years, Indian
DiseaseAssertion: VWD type 3
FamilyInfo: Consanguinity: yes, no family history of disease
ParentalGenotype: n/a
CasePresentingHPOs: n/a
CaseHPOFreeText: FVIII:C: (U/dl): 1, VWF:Ag (U/dl): <1, Bleeding Score: 22
CaseNotHPOs: n/a
CaseNotHPOFreeText: n/a
CasePreviousTesting: n/a
Gene: VWF
Variant:
c.1093C>T (p.Arg365*), Exon 9, Homozygous
1 10 M 3 c.100C.T p.R34* Hmz ,1 ,1 11 - +
Case: 1, M, 10 years, Indian
DiseaseAssertion: VWD type 3
FamilyInfo: Consanguinity: yes, no family history of disease
ParentalGenotype: n/a
CasePresentingHPOs: n/a
CaseHPOFreeText: FVIII:C: (U/dl): <1, VWF:Ag (U/dl): <1, Bleeding Score: 11
CaseNotHPOs: n/a
CaseNotHPOFreeText: n/a
CasePreviousTesting: n/a
Gene: VWF
Variant:
c.100C>T (p.Arg34*), Exon 3, Homozygous
49 1.1 F 19 c.2443-1G.C Hmz 4 2.6 3 - -
Case: 49, F, 1.1 years, Indian
DiseaseAssertion: VWD type 3
FamilyInfo: no family history of disease, Consanguinity: no
ParentalGenotype: n/a
CasePresentingHPOs: n/a
CaseHPOFreeText: FVIII:C: (U/dl): 4, VWF:Ag (U/dl): 2.6, Bleeding Score: 3
CaseNotHPOs: n/a
CaseNotHPOFreeText: n/a
CasePreviousTesting: n/a
Gene: VWF
Variant:
c.2443-1G>C, Exon 19
Homozygous
65 10 M 28 c.3789G.A p.S1263S Hmz 2.1 1.4 5 - -c.3797C.T p.P1266Lc.3835G.A p.V1279Ic.3931C.T p.Q1311*c.3951C.T p.A1317A
Case: 65, M, 10 years, Indian
DiseaseAssertion: VWD type 3
FamilyInfo: no family history of disease, Consanguinity: no
ParentalGenotype: n/a
CasePresentingHPOs: n/a
CaseHPOFreeText: FVIII:C: (U/dl): 2.1, VWF:Ag (U/dl): 1.4, Bleeding Score: 5
CaseNotHPOs: n/a
CaseNotHPOFreeText: n/a
CasePreviousTesting: n/a
Gene: VWF
Variant:
c.3789G>A (p.Ser1263Ser), Exon 28
c.3797C>T (p.Pro1266Leu), Exon 28
c.3835G>A (p.Val1279Ile), Exon 28
c.3931C>T (p.Gln1311*), Exon 28
c.3951C>T (p.Ala1317Ala), Exon 28
Homozygous
25 26 M 14 c.1693C.Tp.Q565* Hmz 2.5 ,1 6 - -
Case: 25, M, 26 years, Indian
DiseaseAssertion: VWD type 3
FamilyInfo: Consanguinity: no, no family history of disease
ParentalGenotype: n/a
CasePresentingHPOs: n/a
CaseHPOFreeText: FVIII:C: (U/dl): 2.5, VWF:Ag (U/dl): <1, Bleeding Score: 6
CaseNotHPOs: n/a
CaseNotHPOFreeText: n/a
CasePreviousTesting: n/a
Gene: VWF
Variant:
c.1693C>T (p.Gln565*), Exon 14, Homozygous
47 2 F 5 c.478G.Ap.G160R Hmz ,1 2.3 6 - +
Case: 47, F, 2 years, Indian
DiseaseAssertion: VWD type 3
FamilyInfo: no family history of disease, Consanguinity: yes
ParentalGenotype: n/a
CasePresentingHPOs: n/a
CaseHPOFreeText: FVIII:C: (U/dl): <1, VWF:Ag (U/dl): 2.3, Bleeding Score: 6
CaseNotHPOs: n/a
CaseNotHPOFreeText: n/a
CasePreviousTesting: n/a
Gene: VWF
Variant:
c.478G>A (p.Gly160Arg), Exon 5
Homozygous
8 2 F 10 c.1117C.T p.R373* Hmz 4.5 ,1 11 - -
Case: 8, F, 2 years, Indian
DiseaseAssertion: VWD type 3
FamilyInfo: Consanguinity: no, no family history of disease
ParentalGenotype: n/a
CasePresentingHPOs: n/a
CaseHPOFreeText: FVIII:C: (U/dl): 4.5, VWF:Ag (U/dl): <1, Bleeding Score: 11
CaseNotHPOs: n/a
CaseNotHPOFreeText: n/a
CasePreviousTesting: n/a
Gene: VWF
Variant:
c.1117C>T (p.Arg373*), Exon 10, Homozygous
21 22 M 50 c.8145C.Ap.C2715* Hmz 8 4.9 9 - -
Case: 21, M, 22 years, Indian
DiseaseAssertion: VWD type 3
FamilyInfo: Consanguinity: no, no family history of disease
ParentalGenotype: n/a
CasePresentingHPOs: n/a
CaseHPOFreeText: FVIII:C: (U/dl): 8, VWF:Ag (U/dl): 4.9, Bleeding Score: 9
CaseNotHPOs: n/a
CaseNotHPOFreeText: n/a
CasePreviousTesting: n/a
Gene: VWF
Variant:
c.8145C>A (p.Cys2715*), Exon 50, Homozygous
70 22 M 16 c.1946-1G.A Hmz 1.2 1 4 + -
Case: 70, M, 22 years, Indian
DiseaseAssertion: VWD type 3
FamilyInfo: family history of disease, Consanguinity: no
ParentalGenotype: n/a
CasePresentingHPOs: n/a
CaseHPOFreeText: FVIII:C: (U/dl): 1.2, VWF:Ag (U/dl): 1, Bleeding Score: 4
CaseNotHPOs: n/a
CaseNotHPOFreeText: n/a
CasePreviousTesting: n/a
Gene: VWF
Variant:
c.1946-1G>A, Exon 16
Homozygous
10 42 M 31 c.5335C.T p.R1779* Htz ,1 ,1 34 + -
Case: 10, M, 42 years, Indian
DiseaseAssertion: VWD type 3
FamilyInfo: Consanguinity: no, family history of disease
ParentalGenotype: n/a
CasePresentingHPOs: n/a
CaseHPOFreeText: FVIII:C: (U/dl): <1, VWF:Ag (U/dl): <1, Bleeding Score: 34
CaseNotHPOs: n/a
CaseNotHPOFreeText: n/a
CasePreviousTesting: n/a
Gene: VWF
Variant:
c.5335C>T (p.Arg1779*), Exon 31, Heterozygous
18 8 M 47 c.7300C.T p.R2434* Hmz 8 4.6 8 - +
Case: 18, M, 8 years, Indian
DiseaseAssertion: VWD type 3
FamilyInfo: Consanguinity: yes, no family history of disease
ParentalGenotype: n/a
CasePresentingHPOs: n/a
CaseHPOFreeText: FVIII:C: (U/dl): 8, VWF:Ag (U/dl): 4.6, Bleeding Score: 8
CaseNotHPOs: n/a
CaseNotHPOFreeText: n/a
CasePreviousTesting: n/a
Gene: VWF
Variant:
c.7300C>T (p.Arg2434*), Exon 47, Homozygous
Note: Look over exon
23 10 F 8 c.954T.A p.N318K Htz 3.1 ,1 8 + +
Case: 23, F, 10 years, Indian
DiseaseAssertion: VWD type 3
FamilyInfo: family history of disease, Consanguinity: yes
ParentalGenotype: n/a
CasePresentingHPOs: n/a
CaseHPOFreeText: FVIII:C: (U/dl): 3.1, VWF:Ag (U/dl): <1, Bleeding Score: 8
CaseNotHPOs: n/a
CaseNotHPOFreeText: n/a
CasePreviousTesting: n/a
Gene: VWF
Variant:
c.954T>A (p.Asn318Lys), Exon 8
Heterozygous
62 5 F 50 c.8145C.Ap.C2715* Hmz 3.5 2.6 15 - +
Case: 62, F, 5 years, Indian
DiseaseAssertion: VWD type 3
FamilyInfo: Consanguinity: yes, no family history of disease
ParentalGenotype: n/a
CasePresentingHPOs: n/a
CaseHPOFreeText: FVIII:C: (U/dl): 3.5, VWF:Ag (U/dl): 2.6, Bleeding Score: 15
CaseNotHPOs: n/a
CaseNotHPOFreeText: n/a
CasePreviousTesting: n/a
Gene: VWF
Variant:
c.8145C>A (p.Cys2715*), Exon 50, Homozygous
14
Case: Patient 14 (Family C), male, 39yo
DiseaseAssertion: VWD2B
FamilyInfo: NA
ParentalGenotype(s): NA
CasePresentingHPOs: HP:0030132, HP:0030129, HP:0030130, HP:0011871, HP:0012147
(Absence of large von Willebrand factor multimers, impaired ristocetin cofactor assay activity, Impaired von Willebrand factor collagen binding activity, Impaired RIPA, Reduced quantity of VWF)
CaseHPOFreeText: blood group O, Platelet count x103/μl = 210, PFA 100 sec = >300, SPA % = 0, MADR mg/mL = 0.6, VWF:Ag U/dL = 61.3, VWF:CB U/dL = 10.4, VWF:CB ratio = 0.17, VWF:RCo U/dL = 18.5, VWF:RCo ratio = 0.3, Platelet VWF U/dL = 119, FVIII U/dL = 40.0, BAT F/M = 6
CaseNOTHPOs:
CaseNOTHPOFreeText:
CasePreviousTesting: NA
GenotypingMethod: Sequencing of exon 28 of VWF
PreviouslyPublished: NA
Gene: VWF
Variant: c.3922C>T (p.Arg1308Cys)
HGVS: NM_000552.4(VWF):c.3922C>T (p.Arg1308Cys)
ClinVarID: 289; https://www.ncbi.nlm.nih.gov/clinvar/variation/289/
CAID: NA
gnomAD: absent
2
Case: Patient 2 (Family A), male, 78yo
DiseaseAssertion: VWD2B
FamilyInfo: NA
ParentalGenotype(s): NA
CasePresentingHPOs: HP:0030132, HP:0030129, HP:0030130, HP:0011871, HP:0012147
(Absence of large von Willebrand factor multimers, impaired ristocetin cofactor assay activity, Impaired von Willebrand factor collagen binding activity, Impaired RIPA, Reduced quantity of VWF)
CaseHPOFreeText: blood group O, Platelet count x103/μl = 119, PFA 100 sec = >300, SPA % = 7, MADR mg/mL = 0.75, VWF:Ag U/dL = 44.7, VWF:CB U/dL = 11.8, VWF:CB ratio = 0.27, VWF:RCo U/dL = 28.4, VWF:RCo ratio = 0.63, Platelet VWF U/dL = 115, FVIII U/dL = 48.2, BAT F/M = 1
CaseNOTHPOs:
CaseNOTHPOFreeText:
CasePreviousTesting: NA
GenotypingMethod: Sequencing of exon 28 of VWF
PreviouslyPublished: NA
Gene: VWF
Variant: c.3922C>T (p.Arg1308Cys)
HGVS: NM_000552.4(VWF):c.3922C>T (p.Arg1308Cys)
ClinVarID: 289; https://www.ncbi.nlm.nih.gov/clinvar/variation/289/
CAID: NA
gnomAD: absent
18
Case: Patient 18 (Family E), female, 1yo
DiseaseAssertion: VWD2B
FamilyInfo: NA
ParentalGenotype(s): NA
CasePresentingHPOs: HP:0030132, HP:0030129, HP:0030130, HP:0011871, HP:0012147
(Absence of large von Willebrand factor multimers, impaired ristocetin cofactor assay activity, Impaired von Willebrand factor collagen binding activity, Impaired RIPA, Reduced quantity of VWF)
CaseHPOFreeText: blood group O, Platelet count x103/μl = 28, PFA 100 sec = >300, SPA % = NA, MADR mg/mL = NA, VWF:Ag U/dL = 142.9, VWF:CB U/dL = 97.0, VWF:CB ratio = 0.68, VWF:RCo U/dL = 102.7, VWF:RCo ratio = 0.72, Platelet VWF U/dL = 135, FVIII U/dL = 98.1, BAT F/M = NA
CaseNOTHPOs:
CaseNOTHPOFreeText:
CasePreviousTesting: NA
GenotypingMethod: Sequencing of exon 28 of VWF
PreviouslyPublished: NA
Gene: VWF
Variant: c.3946G>A (p.Val1316Met)
HGVS: NM_000552.4(VWF):c.3946G>A (p.Val1316Met)
ClinVarID: 290; https://www.ncbi.nlm.nih.gov/clinvar/variation/290/
CAID: NA
gnomAD: absent
12
Case: Patient 12 (Family C), female, 60yo
DiseaseAssertion: VWD2B
FamilyInfo: NA
ParentalGenotype(s): NA
CasePresentingHPOs: HP:0030132, HP:0030129, HP:0030130, HP:0011871, HP:0012147
(Absence of large von Willebrand factor multimers, impaired ristocetin cofactor assay activity, Impaired von Willebrand factor collagen binding activity, Impaired RIPA, Reduced quantity of VWF)
CaseHPOFreeText: blood group O, Platelet count x103/μl = 154, PFA 100 sec = >300, SPA % = NA, MADR mg/mL = 0.75, VWF:Ag U/dL = 44.6, VWF:CB U/dL = 8.1, VWF:CB ratio = 0.18, VWF:RCo U/dL = 23.0, VWF:RCo ratio = 0.51, Platelet VWF U/dL = 127, FVIII U/dL = 68.0, BAT F/M = 18
CaseNOTHPOs:
CaseNOTHPOFreeText:
CasePreviousTesting: NA
GenotypingMethod: Sequencing of exon 28 of VWF
PreviouslyPublished: NA
Gene: VWF
Variant: c.3922C>T (p.Arg1308Cys)
HGVS: NM_000552.4(VWF):c.3922C>T (p.Arg1308Cys)
ClinVarID: 289; https://www.ncbi.nlm.nih.gov/clinvar/variation/289/
CAID: NA
gnomAD: absent
16
Case: Patient 16 (Family D), male, 67yo
DiseaseAssertion: VWD2B
FamilyInfo: NA
ParentalGenotype(s): NA
CasePresentingHPOs: HP:0030132, HP:0030129, HP:0030130, HP:0011871, HP:0012147
(Absence of large von Willebrand factor multimers, impaired ristocetin cofactor assay activity, Impaired von Willebrand factor collagen binding activity, Impaired RIPA, Reduced quantity of VWF)
CaseHPOFreeText: blood group O, Platelet count x103/μl = 60, PFA 100 sec = >300, SPA % = 20, MADR mg/mL = 0.15, VWF:Ag U/dL = 34.3, VWF:CB U/dL = 10.5, VWF:CB ratio = 0.31, VWF:RCo U/dL = 14.0, VWF:RCo ratio = 0.41, Platelet VWF U/dL = 142.50, FVIII U/dL = 43.5, BAT F/M = 20
CaseNOTHPOs:
CaseNOTHPOFreeText:
CasePreviousTesting: NA
GenotypingMethod: Sequencing of exon 28 of VWF
PreviouslyPublished: NA
Gene: VWF
Variant: c.3946G>A (p.Val1316Met)
HGVS: NM_000552.4(VWF):c.3946G>A (p.Val1316Met)
ClinVarID: 290; https://www.ncbi.nlm.nih.gov/clinvar/variation/290/
CAID: NA
gnomAD: absent
Type 2B von Willebrand disease with or without large multimers: A distinction of the two sides of the disorder is long overdue
PMID: 28640903
Gene: VWF
HGNCID: 12726
9
Case: Patient 9 (Family B), male, 71yo
DiseaseAssertion: VWD2B
FamilyInfo: NA
ParentalGenotype(s): NA
CasePresentingHPOs: HP:0030132, HP:0030129, HP:0030130, HP:0011871, HP:0012147
(Absence of large von Willebrand factor multimers, impaired ristocetin cofactor assay activity, Impaired von Willebrand factor collagen binding activity, Impaired RIPA, Reduced quantity of VWF)
CaseHPOFreeText: blood group O, Platelet count x103/μl = 56, PFA 100 sec = >300, SPA % = 22, MADR mg/mL = 0.3, VWF:Ag U/dL = 81.2, VWF:CB U/dL = 25.9, VWF:CB ratio = 0.32, VWF:RCo U/dL = 33.75, VWF:RCo ratio = 0.41, Platelet VWF U/dL = 146.2, FVIII U/dL = 52, BAT F/M = NA
CaseNOTHPOs:
CaseNOTHPOFreeText:
CasePreviousTesting: NA
GenotypingMethod: Sequencing of exon 28 of VWF
PreviouslyPublished: NA
Gene: VWF
Variant: c.3922C>T (p.Arg1308Cys)
HGVS: NM_000552.4(VWF):c.3922C>T (p.Arg1308Cys)
ClinVarID: 289; https://www.ncbi.nlm.nih.gov/clinvar/variation/289/
CAID: NA
gnomAD: absent
3
Case: Patient 3 (Family B), male, 55yo
DiseaseAssertion: VWD2B
FamilyInfo: NA
ParentalGenotype(s): NA
CasePresentingHPOs: HP:0030129, HP:0030130, HP:0011871, HP:0012147
(impaired ristocetin cofactor assay activity, Impaired von Willebrand factor collagen binding activity, Impaired RIPA, Reduced quantity of VWF)
CaseHPOFreeText: blood group O, Platelet count x103/μl = 204, PFA 100 sec = >300, SPA % = 0, MADR mg/mL = 0.45, VWF:Ag U/dL = 23.4, VWF:CB U/dL = 21.1, VWF:CB ratio = 0.9, VWF:RCo U/dL = 17.2, VWF:RCo ratio = 0.74, Platelet VWF U/dL = 42.6, FVIII U/dL = 60.5, BAT F/M = 20
CaseNOTHPOs:
CaseNOTHPOFreeText:
CasePreviousTesting: NA
GenotypingMethod: Sequencing of exon 28 of VWF
PreviouslyPublished: NA
Gene: VWF
Variant 1: c.3797C>T (p.Pro1266Leu)
HGVS: NM_000552.4(VWF):c.3797C>T (p.Pro1266Leu)
ClinVarID: 314; https://www.ncbi.nlm.nih.gov/clinvar/variation/314/
CAID: NA
gnomAD: MAF = 0.003667 (92/25086 alleles; 1 homozygote) in the European (Finnish) population; https://gnomad.broadinstitute.org/variant/12-6128787-G-A?dataset=gnomad_r2_1
Variant 2: c.7085G>T (p.Cys2362Phe)
HGVS: NM_000552.4(VWF):c.7085G>T (p.Cys2362Phe)
ClinVarID: 315; https://www.ncbi.nlm.nih.gov/clinvar/variation/315/
CAID: NA
gnomAD: absent
Outcome of laparoscopic ovariohysterectomy or ovariectomy in dogs with von Willebrand disease or factor VII deficiency: 20 cases (2012–2014)
PMID: 29035661
Gene: VWF
HGNCID: 12726
Table 2
Probands: Pt36, 76, 77 same family
Labs: for Pt.36, VWF:Ag 17 IU/dL, VWF:RCo/VWF:Ag 0.37, VWF:GPIb/VWF:Ag 0.38, and normal multimers per data in table S1
CAID: CA383506019
Comment on: Generation and optimization of the self-administered pediatric bleeding questionnaire and its validation as a screening tool for von Willebrand disease
PMID: 28727265
Gene: VWF
HGNCID: 12726
Two cases of von Willebrand disease type 3 in consanguineous Chinese families
PMID: 31793247
Gene: von Willebrand Factor (VWF)
A 23‐year‐old female
Case#: Patient A, Female, Age 23, Chinese
Disease Assertion: VWD3
FamilyInfo: Family pedigree in figure 1(a). Consanguineous marriage between parents. Parents had a boy who died (1 year old) due to heavy nose bleeds. Parents were heterozygous carriers for the variant.
Parental Genotype: Both parents were heterozygous
CasePresentingHPOs: HP:0000132, HP:0003645, HP:0008151
(Menorrhagia, Prolonged partial thromboplastin time, Prolonged prothrombin time)
CaseHPOFreeText: Scalp hematoma, FVIII:C: 1.3%, VWF:Ag: 3.6%, VWF:RCo: <1.0%, PT: 15.9 s, APTT: 62.7 s
CaseNotHPOs: N/A
CaseNotHPOFreeText: TT: 14.9 s
Protein Expression: N/A
CasePreviousTesting: NGS targeting all exons and covered F8,F9, and VWF genes; and Sanger Sequencing
Gene: VWF
Variant: NM_000552.4(VWF):c.4696C>T (p.Arg1566Ter)
ClinVar:100382 ClinVarID
CAID: CA228639
gnomAD: MAF of 0.00001762 (2/113480 alleles) in the European (Non- Finnish) population.
T099F/3180.040.020.06c.1750_1765delinsCGp.Cys584_Ser589delinsArg15Heterozygous
Case: T099, F, 3
DiseaseAssertion: VWD type 3
FamilyInfo: n/a
CasePresentingHPOs: n/a
CaseHPOFreeText: Bleeding Score: 18 (Kruskal–Wallis followed by Mann–Whitney U post-hoc testing Post-hoc testing ), VWF:Ag (IU/ml): 0.04, VWF:RCo (IU/ml): 0.02, FVIII:C (IU/ml): 0.06
CaseNotHPOs: n/a
CaseNotHPOFreeText: n/a
CasePreviousTesting: n/a
Gene: VWF
Variant:
c.1750_1765delinsCG (p.Cys584_Ser589delinsArg), Exon 15, Heterozygous
Note: ELISA-based assay for detecting alloantibodies, genomic analysis via sequencing of leukocytes for the VWF gene including exons 1-52 and about 1.5 km of VWF promoter, PCR amplification for variant confirmation, SALSA-MLPAVWF assay evaluation for partial/total gene deletions when sequencing did not reveal pathogenic explanation
T110F/41230.010.010.02c.8418_8419insTCCCp.Ser2807 fs52Homozygous
Case: T110, F, 41
DiseaseAssertion: VWD type 3
FamilyInfo: n/a
CasePresentingHPOs: n/a
CaseHPOFreeText: Bleeding Score: 23 (Kruskal–Wallis followed by Mann–Whitney U post-hoc testing Post-hoc testing ), VWF:Ag (IU/ml): 0.01, VWF:RCo (IU/ml): 0.01, FVIII:C (IU/ml): 0.02
CaseNotHPOs: n/a
CaseNotHPOFreeText: n/a
CasePreviousTesting: n/a
Gene: VWF
Variant:
c.8418_8419insTCCC (p.Ser2807 fs), Exon 52, Homozygous
Note: ELISA-based assay for detecting alloantibodies, genomic analysis via sequencing of leukocytes for the VWF gene including exons 1-52 and about 1.5 km of VWF promoter, PCR amplification for variant confirmation, SALSA-MLPAVWF assay evaluation for partial/total gene deletions when sequencing did not reveal pathogenic explanation
T018F/18120.040.000.03c.7399C>T, c.8418_8419insTCCCp.Gln2467*, p.Ser2807 fs43/52Compound heterozygous
Case: T018, F, 12
DiseaseAssertion: VWD type 3
FamilyInfo: n/a
CasePresentingHPOs: HP:0000421
CaseHPOFreeText: Bleeding Score: 12 (Kruskal–Wallis followed by Mann–Whitney U post-hoc testing Post-hoc testing ), VWF:Ag (IU/ml): 0.04, VWF:RCo (IU/ml): 0.00, FVIII:C (IU/ml): 0.03, inhibitor positive
CaseNotHPOs: has not developed any anaphylactic reactions and/or become refractory to replacement therapy
CaseNotHPOFreeText: n/a
CasePreviousTesting: n/a
Gene: VWF
Variant:
c.7399C>T (p.Gln2467*), Exon 43
c.8418_8419insTCCC (p.Ser2807 fs), Exon 52
Compound heterozygous
Note: ELISA-based assay for detecting alloantibodies, genomic analysis via sequencing of leukocytes for the VWF gene including exons 1-52 and about 1.5 km of VWF promoter, PCR amplification for variant confirmation, SALSA-MLPAVWF assay evaluation for partial/total gene deletions when sequencing did not reveal pathogenic explanation
T030M/6670.030.010.09c.-2328T>G, c.2220G>A, c.3379 + 7A>C, c.3539-33G>A, c.3539-49C>T, c.4414dupC, c.5620 + 33-40delA, c.6554G>A, c.6902-5T>A, c.8418_8419insTCCCp.Met740Ile, p.His1472 fs, p.Arg2185Gln, p.Ser2807 fs28/52Compound heterozygous
Case: T030, M, 66
DiseaseAssertion: VWD type 3
FamilyInfo: n/a
CasePresentingHPOs: n/a
CaseHPOFreeText: Bleeding Score: 7 (Kruskal–Wallis followed by Mann–Whitney U post-hoc testing Post-hoc testing ), VWF:Ag (IU/ml): 0.03, VWF:RCo (IU/ml): 0.01, FVIII:C (IU/ml): 0.09
CaseNotHPOs: n/a
CaseNotHPOFreeText: n/a
CasePreviousTesting: n/a
Gene: VWF
Variant:
c.-2328T>G
c.2220G>A (p.Met740Ile)
c.3379 + 7A>C
c.3539-33G>A
c.3539-49C>T
c.4414dupC (p.His1472 fs)
c.5620 + 33-40delA
c.6554G>A (p.Arg2185Gln)
c.6902-5T>A
c.8418_8419insTCCC (p.Ser2807 fs)
Exon 28/52
Compound heterozygous
Note: ELISA-based assay for detecting alloantibodies, genomic analysis via sequencing of leukocytes for the VWF gene including exons 1-52 and about 1.5 km of VWF promoter, PCR amplification for variant confirmation, SALSA-MLPAVWF assay evaluation for partial/total gene deletions when sequencing did not reveal pathogenic explanation
T036F/41250.010.010.01c.5180_5181insTTp.Leu1727 fs30Homozygous
Case: T036, F, 41
DiseaseAssertion: VWD type 3
FamilyInfo: n/a
CasePresentingHPOs: n/a
CaseHPOFreeText: Bleeding Score: 25 (Kruskal–Wallis followed by Mann–Whitney U post-hoc testing Post-hoc testing ), VWF:Ag (IU/ml): 0.01, VWF:RCo (IU/ml): 0.01, FVIII:C (IU/ml) : 0.01
CaseNotHPOs: n/a
CaseNotHPOFreeText: n/a
CasePreviousTesting: n/a
Gene: VWF
Variant:
c.5180_5181insTT (p.Leu1727 fs), Exon 30, Homozygous
Note: ELISA-based assay for detecting alloantibodies, genomic analysis via sequencing of leukocytes for the VWF gene including exons 1-52 and about 1.5 km of VWF promoter, PCR amplification for variant confirmation, SALSA-MLPAVWF assay evaluation for partial/total gene deletions when sequencing did not reveal pathogenic explanation
T141F/16130.040.040.06c.817T>Cp.Arg273Trp7Homozygous
Case: T141, F, 16
DiseaseAssertion: VWD type 3
FamilyInfo: n/a
CasePresentingHPOs: n/a
CaseHPOFreeText: Bleeding Score: 13 (Kruskal–Wallis followed by Mann–Whitney U post-hoc testing Post-hoc testing ), VWF:Ag (IU/ml): 0.04, VWF:RCo (IU/ml): 0.04, FVIII:C (IU/ml): 0.06
CaseNotHPOs: n/a
CaseNotHPOFreeText: n/a
CasePreviousTesting: n/a
Gene: VWF
Variant:
c.817T>C (p.Arg273Trp), Exon 7, Homozygous
Note: ELISA-based assay for detecting alloantibodies, genomic analysis via sequencing of leukocytes for the VWF gene including exons 1-52 and about 1.5 km of VWF promoter, PCR amplification for variant confirmation, SALSA-MLPAVWF assay evaluation for partial/total gene deletions when sequencing did not reveal pathogenic explanation
T093M/8100.020.020.04c.6709T>C, c.220 + 20G>Tp.Cys2237Arg, -38Homozygous
Case: T093, M, 8
DiseaseAssertion: VWD type 3
FamilyInfo: n/a
CasePresentingHPOs: n/a
CaseHPOFreeText: Bleeding Score: 10 (Kruskal–Wallis followed by Mann–Whitney U post-hoc testing Post-hoc testing ), VWF:Ag (IU/ml): 0.02, VWF:RCo (IU/ml): 0.02, FVIII:C (IU/ml): 0.04
CaseNotHPOs: n/a
CaseNotHPOFreeText: n/a
CasePreviousTesting: n/a
Gene: VWF
Variant:
c.6709T>C (p.Cys2237Arg), Exon 38
c.220 + 20G>T
Homozygous
Note: ELISA-based assay for detecting alloantibodies, genomic analysis via sequencing of leukocytes for the VWF gene including exons 1-52 and about 1.5 km of VWF promoter, PCR amplification for variant confirmation, SALSA-MLPAVWF assay evaluation for partial/total gene deletions when sequencing did not reveal pathogenic explanation
T118F/3080.020.000.05c.8418_8419insTCCCp.Ser2807 fs52Homozygous
Case: T118, F, 30
DiseaseAssertion: VWD type 3
FamilyInfo: n/a
CasePresentingHPOs: n/a
CaseHPOFreeText: Bleeding Score: 8 (Kruskal–Wallis followed by Mann–Whitney U post-hoc testing Post-hoc testing ), VWF:Ag (IU/ml): 0.02, VWF:RCo (IU/ml): 0.00, FVIII:C (IU/ml): 0.05
CaseNotHPOs: n/a
CaseNotHPOFreeText: n/a
CasePreviousTesting: n/a
Gene: VWF
Variant:
c.8418_8419insTCCC (p.Ser2807 fs), Exon 52, Homozygous
Note: ELISA-based assay for detecting alloantibodies, genomic analysis via sequencing of leukocytes for the VWF gene including exons 1-52 and about 1.5 km of VWF promoter, PCR amplification for variant confirmation, SALSA-MLPAVWF assay evaluation for partial/total gene deletions when sequencing did not reveal pathogenic explanation
T086M/130.010.020.01c.1A>G, c.2377C>Tp.Met1Val, p.Gln793*2/18Compound heterozygous
Case: T086, M, 1
DiseaseAssertion: VWD type 3
FamilyInfo: n/a
CasePresentingHPOs: n/a
CaseHPOFreeText: Bleeding Score: 3 (Kruskal–Wallis followed by Mann–Whitney U post-hoc testing Post-hoc testing ), VWF:Ag (IU/ml): 0.01, VWF:RCo (IU/ml): 0.02, FVIII:C (IU/ml): 0.01
CaseNotHPOs: n/a
CaseNotHPOFreeText: n/a
CasePreviousTesting: n/a
Gene: VWF
Variant:
c.1A>G (p.Met1Val), Exon 2
c.2377C>T (p.Gln793*), Exon 18
Compound Heterozygous
Note: ELISA-based assay for detecting alloantibodies, genomic analysis via sequencing of leukocytes for the VWF gene including exons 1-52 and about 1.5 km of VWF promoter, PCR amplification for variant confirmation, SALSA-MLPAVWF assay evaluation for partial/total gene deletions when sequencing did not reveal pathogenic explanation
T050F/21240.010.000.01c.876delC, c.1255C>Tp.Ser293 fs, p.Gln419*8/11Compound heterozygous
Case: T050, F, 21
DiseaseAssertion: VWD type 3
FamilyInfo: n/a
CasePresentingHPOs: n/a
CaseHPOFreeText: Bleeding Score: 24 (Kruskal–Wallis followed by Mann–Whitney U post-hoc testing Post-hoc testing ), VWF:Ag (IU/ml): 0.01, VWF:RCo (IU/ml): 0.00, FVIII:C (IU/ml): 0.01
CaseNotHPOs: n/a
CaseNotHPOFreeText: n/a
CasePreviousTesting: n/a
Gene: VWF
Variant:
c.876delC (p.Ser293 fs), Exon 8
c.1255C>T (p.Gln419*), Exon 11
Compound heterozygous
Note: ELISA-based assay for detecting alloantibodies, genomic analysis via sequencing of leukocytes for the VWF gene including exons 1-52 and about 1.5 km of VWF promoter, PCR amplification for variant confirmation, SALSA-MLPAVWF assay evaluation for partial/total gene deletions when sequencing did not reveal pathogenic explanation
CII:6
Proband: FC_II:6, male age unknown
FamilyDetails: parents are unaffected hets, first cousins, fathers VWF:Ag at very low end of reference
Labs: prolonged bleeding time (>20min), reduced VWF:Ag (less than 0.01 IU/mL), FVIII:Ag (0.06 IU/mL), FVIII:C (0.09 IU/mL), and VWF:RiCoF (less than 0.01 IU/mL), absent multimers
Genotype: p.Arg273Trp reported as c.1067C>T (MANE transcript is 817C>T)
CAID: CA228829
21 Type2A (IIE)c.3469T>GN p.Cys1157Gly 26 D3-TIL-3htz Missense na 27 22RCo 57
Case: IP #21 (also in row 9 table 6)
DiseaseAssertion: type 2A (IIE) VWD
FamilyInfo:
ParentalGenotype(s):
CasePresentingHPOs:
CaseHPOFreeRext: VWF:Ag [IU/dL] = 27; VWF:Ac [IU/dL] = 22; FVIII:C [IU/dL] = 57
CaseNOTHPOs:
CaseNOTHPOFreeText:
CasePreviousTesting:
GenotypingMethod: Sequence variations in the VWF were identified through direct sequencing, while the detection of large rearrangements utilized the multiplex ligation-dependent probe amplification (MLPA) technique or assessed copy number variations (CNVs). Sanger sequencing methodology was applied for VWF analysis in patients investigated prior to 2016 (approximately 14% of IPs), whereas next-generation sequencing (NGS) was employed for the analysis of VWF in patients inspected from 2017 onwards (about 86% of IPs). In both strategies, the entire VWF, encompassing all 52 exons, intron/exon boundaries, and promoter regions, was analyzed.
PreviouslyPublished:
Gene: VWF
Variant: c.3469T>G p.Cys1157Gly
HGVS:
ClinVarID:
CAID: CA383511299
gnomAD: absent
51-54Type2A(IIA)c.4811T>AN p.Val1604Asp 28 A2 htz Missense O/A/O/O27/24/35/328/9/11/755CSA/57CSA/62
Case: IP #53 (also in row 21 table 6)
DiseaseAssertion: type 2A (IIA) VWD
FamilyInfo:
ParentalGenotype(s):
CasePresentingHPOs: HP:0032442 - blood group O
CaseHPOFreeRext: VWF:Ag [IU/dL] = 35; VWF:Ac [IU/dL] = 11; FVIII:C [IU/dL] = 62
CaseNOTHPOs:
CaseNOTHPOFreeText:
CasePreviousTesting:
GenotypingMethod: Sequence variations in the VWF were identified through direct sequencing, while the detection of large rearrangements utilized the multiplex ligation-dependent probe amplification (MLPA) technique or assessed copy number variations (CNVs). Sanger sequencing methodology was applied for VWF analysis in patients investigated prior to 2016 (approximately 14% of IPs), whereas next-generation sequencing (NGS) was employed for the analysis of VWF in patients inspected from 2017 onwards (about 86% of IPs). In both strategies, the entire VWF, encompassing all 52 exons, intron/exon boundaries, and promoter regions, was analyzed.
PreviouslyPublished:
Gene: VWF
Variant: c.4811T>A p.Val1604Asp
HGVS:
ClinVarID: not found
CAID: CA383499144
gnomAD: absent
30
Case: IP #30
DiseaseAssertion: type 2A VWD
FamilyInfo:
ParentalGenotype(s):
CasePresentingHPOs:
CaseHPOFreeRext: VWF:Ag [IU/dL] = 15; VWF:Ac [IU/dL] = 6; FVIII:C [IU/dL] = 28
CaseNOTHPOs:
CaseNOTHPOFreeText:
CasePreviousTesting:
GenotypingMethod: Sequence variations in the VWF were identified through direct sequencing, while the detection of large rearrangements utilized the multiplex ligation-dependent probe amplification (MLPA) technique or assessed copy number variations (CNVs). Sanger sequencing methodology was applied for VWF analysis in patients investigated prior to 2016 (approximately 14% of IPs), whereas next-generation sequencing (NGS) was employed for the analysis of VWF in patients inspected from 2017 onwards (about 86% of IPs). In both strategies, the entire VWF, encompassing all 52 exons, intron/exon boundaries, and promoter regions, was analyzed.
PreviouslyPublished:
Gene: VWF
Variant: c.4151T>G p.Leu1384Arg
HGVS:
ClinVarID: not found
CAID: CA383504381
gnomAD: absent
16 Type2A (IIE)c.3433C>T p.Arg1145Cys 26 D3-C8-3htz Missense na 65 39 78
Case: IP #16
DiseaseAssertion: type 2A (IIE) VWD
FamilyInfo:
ParentalGenotype(s):
CasePresentingHPOs:
CaseHPOFreeRext: VWF:Ag [IU/dL] = 65; VWF:Ac [IU/dL] = 39; FVIII:C [IU/dL] = 78
CaseNOTHPOs:
CaseNOTHPOFreeText:
CasePreviousTesting:
GenotypingMethod: Sequence variations in the VWF were identified through direct sequencing, while the detection of large rearrangements utilized the multiplex ligation-dependent probe amplification (MLPA) technique or assessed copy number variations (CNVs). Sanger sequencing methodology was applied for VWF analysis in patients investigated prior to 2016 (approximately 14% of IPs), whereas next-generation sequencing (NGS) was employed for the analysis of VWF in patients inspected from 2017 onwards (about 86% of IPs). In both strategies, the entire VWF, encompassing all 52 exons, intron/exon boundaries, and promoter regions, was analyzed.
PreviouslyPublished:
Gene: VWF
Variant: c.3433C>T p.Arg1145Cys
HGVS:
ClinVarID: not found
CAID: CA383511379
gnomAD: absent
7 Type 2A c.2546 þ 1G > A Nc.5092G > T Np.Gly1698Cys 1929D’A3htzhtzSplice SiteMissenseO 27 16 31
Case: 7 (also in row 2 splice variants table 6)
DiseaseAssertion: type 2A VWD
FamilyInfo:
ParentalGenotype(s):
CasePresentingHPOs: HP:0032442 - blood group O
CaseHPOFreeRext: VWF:Ag [IU/dL] = 27; VWF:Ac [IU/dL] = 16; FVIII:C [IU/dL] = 31
CaseNOTHPOs:
CaseNOTHPOFreeText:
CasePreviousTesting:
GenotypingMethod: Sequence variations in the VWF were identified through direct sequencing, while the detection of large rearrangements utilized the multiplex ligation-dependent probe amplification (MLPA) technique or assessed copy number variations (CNVs). Sanger sequencing methodology was applied for VWF analysis in patients investigated prior to 2016 (approximately 14% of IPs), whereas next-generation sequencing (NGS) was employed for the analysis of VWF in patients inspected from 2017 onwards (about 86% of IPs). In both strategies, the entire VWF, encompassing all 52 exons, intron/exon boundaries, and promoter regions, was analyzed.
PreviouslyPublished:
Gene: VWF
Variant: c.2546+1G > A
HGVS:
ClinVarID: not found
CAID: CA383520269
gnomAD: 0.000001239 (2 in 1614166) no homozygotes https://gnomad.broadinstitute.org/variant/12-6036387-C-T?dataset=gnomad_r4
MultipleGeneVariants:
Gene: VWF
Variant: c.5092G > T p.Gly1698Cys
CAID: CA383496674
gnomAD: 6.196e-7 (1 in 1613980) no homozygotes https://gnomad.broadinstitute.org/variant/chr12-6016832-C-A?dataset=gnomad_r4
2 A
Case: Patient 2, Family A (Table 1.), F/15, Afro-Caribbean
DiseaseAssertion: VWD2B
FamilyInfo: Patient 1 (F/49, Afro-Caribbean) from same family G. (Table 1.)
ParentalGenotype(s): NA
CasePresentingHPOs:
CaseHPOFreeRext: BAT = 3, FVIII:C (IU/dL) = 50, VWF:Ag (IU/dL) = 57, VWF:Act (IU/dL) = 14
CaseNOTHPOs:
CaseNOTHPOFreeText: Blood group O+
CasePreviousTesting:
GenotypingMethod: All samples were analyzed by captured-based high throughput sequencing which was performed with a custom-design of the VWF gene provided by Twist BioScience (San Francisco, USA). It comprised all 52 exons, intronic flanking regions, promoter and 3’UTR region of the VWF gene. Libraries were prepared by using the Twist NGS target enrichment solution (Twist BioScience) according to the manufacturer protocol. Samples were analyzed on a NovaSeq 6000 sequencer (Illumina) with a median read depth of 2500X by using the 300-cycle S1 NovaSeq 6000seq reagent kit with 150-bp paired-end reads. The raw data were analyzed with Mutect21 and Vardict2 tools. The inhouse NGSreport software (CHU Lille) was used for data visualization, sequences check and conservation of variants with high quality metrics. In some cases, patients genomic DNA was screened for sequence variations (large deletions, insertions and duplications) by Multiplex Ligation-dependent Probe Amplification (MCR Holland).
PreviouslyPublished: NA
Gene: VWF
Variant: c.3946G > A p.(Val1316Met)
HGVS: NM_000552.5:c.3946G>A (p.Val1316Met)
ClinVarID: 290
CAID: CA114127
gnomAD:
54 A1
Case: Patient 54, Family A1 (Table 1.), M/33, Afro-Caribbean
DiseaseAssertion: VWD1
FamilyInfo: Patient 55 (F/54, Afro-Caribbean), Patient 56 (M/64, Afro-Caribbean), Patient 57 (F/26, Afro-Caribbean), Patient 63 (F/59, Afro-Caribbean) also from Family A1. (Table 1.)
ParentalGenotype(s): NA
CasePresentingHPOs:
CaseHPOFreeRext: BAT = 1, FVIII:C (IU/dL) = 58.1, VWF:Ag (IU/dL) = 35, VWF:Act (IU/dL) = 38
CaseNOTHPOs:
CaseNOTHPOFreeText: Blood group A+
CasePreviousTesting:
GenotypingMethod: All samples were analyzed by captured-based high throughput sequencing which was performed with a custom-design of the VWF gene provided by Twist BioScience (San Francisco, USA). It comprised all 52 exons, intronic flanking regions, promoter and 3’UTR region of the VWF gene. Libraries were prepared by using the Twist NGS target enrichment solution (Twist BioScience) according to the manufacturer protocol. Samples were analyzed on a NovaSeq 6000 sequencer (Illumina) with a median read depth of 2500X by using the 300-cycle S1 NovaSeq 6000seq reagent kit with 150-bp paired-end reads. The raw data were analyzed with Mutect21 and Vardict2 tools. The inhouse NGSreport software (CHU Lille) was used for data visualization, sequences check and conservation of variants with high quality metrics. In some cases, patients genomic DNA was screened for sequence variations (large deletions, insertions and duplications) by Multiplex Ligation-dependent Probe Amplification (MCR Holland).
PreviouslyPublished: NA
Gene: VWF
Variant: c.7472G > A, p.(Cys2491Tyr)
HGVS: NM_000552.5:c.7472G>A (p.Cys2491Tyr)
ClinVarID:
CAID: CA383489765
gnomAD:
19 L
Case: Patient 19, Family L (Table 1.), M/76, Afro-Caribbean
DiseaseAssertion: VWD2A (IIE)
FamilyInfo:
ParentalGenotype(s): NA
CasePresentingHPOs:
CaseHPOFreeRext: BAT =4, FVIII:C (IU/dL) = NA, VWF:Ag (IU/dL) = 70, VWF:Act (IU/dL) = 28
CaseNOTHPOs:
CaseNOTHPOFreeText: Blood group A+
CasePreviousTesting:
GenotypingMethod: All samples were analyzed by captured-based high throughput sequencing which was performed with a custom-design of the VWF gene provided by Twist BioScience (San Francisco, USA). It comprised all 52 exons, intronic flanking regions, promoter and 3’UTR region of the VWF gene. Libraries were prepared by using the Twist NGS target enrichment solution (Twist BioScience) according to the manufacturer protocol. Samples were analyzed on a NovaSeq 6000 sequencer (Illumina) with a median read depth of 2500X by using the 300-cycle S1 NovaSeq 6000seq reagent kit with 150-bp paired-end reads. The raw data were analyzed with Mutect21 and Vardict2 tools. The inhouse NGSreport software (CHU Lille) was used for data visualization, sequences check and conservation of variants with high quality metrics. In some cases, patients genomic DNA was screened for sequence variations (large deletions, insertions and duplications) by Multiplex Ligation-dependent Probe Amplification (MCR Holland).
PreviouslyPublished: NA
Gene: VWF
Variant: c.1530G > A, p.(Val510 =) p.
HGVS: NM_000552.5:c.1530G>A (p.Val510=)
ClinVarID:
CAID: CA6403368
gnomAD: MAF of 0.00002198 (2/91004 alleles) in South Asian population https://gnomad.broadinstitute.org/variant/chr12-6062957-C-T?dataset=gnomad_r4
Variant: c.1892C > T, p.(Ala631Val)
HGVS: NM_000552.5:c.1892C>T (p.Ala631Val)
ClinVarID: 422844
CAID: CA6403245
gnomAD: MAF of 0.001908 (137/71810 alleles) in African/African American population https://gnomad.broadinstitute.org/variant/chr12-6056910-G-A?dataset=gnomad_r4
Variant: c.2220G > A, p.(Met740Ile)
HGVS: NM_000552.5:c.2220G>A (p.Met740Ile)
ClinVarID: 100206
CAID: CA201316
gnomAD: MAF of 0.1816 (13626/75022 alleles) in African/African American population https://gnomad.broadinstitute.org/variant/chr12-6046784-C-T?dataset=gnomad_r4
Variant: c.2451T > A, p.(His817Gln)
HGVS: NM_000552.5:c.2451T>A (p.His817Gln)
ClinVarID: 100224
CAID: CA228345
gnomAD: MAF of 0.1150 (8626/75016 alleles) in African/African American population https://gnomad.broadinstitute.org/variant/chr12-6036483-A-T?dataset=gnomad_r4
Variant: c.3445T > C, p.(Cys1149Arg)
HGVS: NM_000552.5:c.3445T>C (p.Cys1149Arg)
ClinVarID: 309
CAID: CA228410
gnomAD: MAF of 0.000003160 (1/316464 alleles) in European (non-Finnish) population https://gnomad.broadinstitute.org/variant/chr12-6022833-A-G?dataset=gnomad_r4
Variant: c.4414G > C p.(Asp1472His)
HGVS: NM_000552.5:c.4414G>C (p.Asp1472His)
ClinVarID: 256679
CAID: CA6402534
gnomAD: MAF of 0.5076 (38011/74882 alleles) in African/African American population https://gnomad.broadinstitute.org/variant/chr12-6019004-C-G?dataset=gnomad_r4
Variant: c.6554G > A, p.(Arg2185Gln
HGVS: NM_000552.5:c.6554G>A (p.Arg2185Gln)
ClinVarID: 100443
CAID: CA228748
gnomAD: MAF of 0.1927 (14427/74878 alleles) in African/African American population https://gnomad.broadinstitute.org/variant/chr12-5993906-C-T?dataset=gnomad_r4
13 I
Case: Patient 13, Family I (Table 1.), F/65, Afro-Caribbean
DiseaseAssertion: VWD2A (IIE)
FamilyInfo: Patient 21 (F/97, Afro-Caribbean), Patient 22 (F/67, Afro-Caribbean), Patient 23 (F/86, Afro-Caribbean), Patient 24 (F/92, Afro-Caribbean), Patient 25 (F/62, Afro-Carribean) also from Family I. (Table 1.)
ParentalGenotype(s): NA
CasePresentingHPOs:
CaseHPOFreeRext: BAT =12, FVIII:C (IU/dL) = 18, VWF:Ag (IU/dL) = 18, VWF:Act (IU/dL) = 7
CaseNOTHPOs:
CaseNOTHPOFreeText: Blood group O+
CasePreviousTesting:
GenotypingMethod: All samples were analyzed by captured-based high throughput sequencing which was performed with a custom-design of the VWF gene provided by Twist BioScience (San Francisco, USA). It comprised all 52 exons, intronic flanking regions, promoter and 3’UTR region of the VWF gene. Libraries were prepared by using the Twist NGS target enrichment solution (Twist BioScience) according to the manufacturer protocol. Samples were analyzed on a NovaSeq 6000 sequencer (Illumina) with a median read depth of 2500X by using the 300-cycle S1 NovaSeq 6000seq reagent kit with 150-bp paired-end reads. The raw data were analyzed with Mutect21 and Vardict2 tools. The inhouse NGSreport software (CHU Lille) was used for data visualization, sequences check and conservation of variants with high quality metrics. In some cases, patients genomic DNA was screened for sequence variations (large deletions, insertions and duplications) by Multiplex Ligation-dependent Probe Amplification (MCR Holland).
PreviouslyPublished: NA
Gene: VWF
Variant: c.1530G > A, p.(Val510 =) p.
HGVS: NM_000552.5:c.1530G>A (p.Val510=)
ClinVarID:
CAID: CA6403368
gnomAD: MAF of 0.00002198 (2/91004 alleles) in South Asian population https://gnomad.broadinstitute.org/variant/chr12-6062957-C-T?dataset=gnomad_r4
Variant: c.1892C > T, p.(Ala631Val)
HGVS: NM_000552.5:c.1892C>T (p.Ala631Val)
ClinVarID: 422844
CAID: CA6403245
gnomAD: MAF of 0.001908 (137/71810 alleles) in African/African American population https://gnomad.broadinstitute.org/variant/chr12-6056910-G-A?dataset=gnomad_r4
Variant: c.2220G > A, p.(Met740Ile)
HGVS: NM_000552.5:c.2220G>A (p.Met740Ile)
ClinVarID: 100206
CAID: CA201316
gnomAD: MAF of 0.1816 (13626/75022 alleles) in African/African American population https://gnomad.broadinstitute.org/variant/chr12-6046784-C-T?dataset=gnomad_r4
Variant: c.2451T > A, p.(His817Gln)
HGVS: NM_000552.5:c.2451T>A (p.His817Gln)
ClinVarID: 100224
CAID: CA228345
gnomAD: MAF of 0.1150 (8626/75016 alleles) in African/African American population https://gnomad.broadinstitute.org/variant/chr12-6036483-A-T?dataset=gnomad_r4
Variant: c.3258C > T, p.(Tyr1086 =)
HGVS: NM_000552.5:c.3258C>T (p.Tyr1086=)
ClinVarID: 256664
CAID: CA6402788
gnomAD: MAF of 0.1284 (9131/71128 alleles) in African/African American population https://gnomad.broadinstitute.org/variant/chr12-6023752-G-A?dataset=gnomad_r4
Variant: c.3445T > C, p.(Cys1149Arg)
HGVS: NM_000552.5:c.3445T>C (p.Cys1149Arg)
ClinVarID: 309
CAID: CA228410
gnomAD: MAF of 0.000003160 (1/316464 alleles) in European (non-Finnish) population https://gnomad.broadinstitute.org/variant/chr12-6022833-A-G?dataset=gnomad_r4
Variant: c.4414G > C p.(Asp1472His)
HGVS: NM_000552.5:c.4414G>C (p.Asp1472His) ClinVarID: 256679
CAID: CA6402534
gnomAD: MAF of 0.5076 (38011/74882 alleles) in African/African American population https://gnomad.broadinstitute.org/variant/chr12-6019004-C-G?dataset=gnomad_r4
Variant: c.6554G > A, p.(Arg2185Gln)
HGVS: NM_000552.5:c.6554G>A (p.Arg2185Gln)
ClinVarID: 100443
CAID: CA228748
gnomAD: MAF of 0.1927 (14427/74878 alleles) in African/African American population https://gnomad.broadinstitute.org/variant/chr12-5993906-C-T?dataset=gnomad_r4
8 F
Case: Patient 8, Family F (Table 1.), M/86, Afro-Caribbean
DiseaseAssertion: VWD2A (IIE)
FamilyInfo: Patient 9 (F/76, Afro-Caribbean) and Patient 28 (F/55, Afro-Caribbean) also from Family F. (Table 1.)
ParentalGenotype(s): NA
CasePresentingHPOs:
CaseHPOFreeRext: BAT = 5, FVIII:C (IU/dL) = 17, VWF:Ag (IU/dL) = 20, VWF:Act (IU/dL) = 10
CaseNOTHPOs:
CaseNOTHPOFreeText: Blood group O+
CasePreviousTesting:
GenotypingMethod: All samples were analyzed by captured-based high throughput sequencing which was performed with a custom-design of the VWF gene provided by Twist BioScience (San Francisco, USA). It comprised all 52 exons, intronic flanking regions, promoter and 3’UTR region of the VWF gene. Libraries were prepared by using the Twist NGS target enrichment solution (Twist BioScience) according to the manufacturer protocol. Samples were analyzed on a NovaSeq 6000 sequencer (Illumina) with a median read depth of 2500X by using the 300-cycle S1 NovaSeq 6000seq reagent kit with 150-bp paired-end reads. The raw data were analyzed with Mutect21 and Vardict2 tools. The inhouse NGSreport software (CHU Lille) was used for data visualization, sequences check and conservation of variants with high quality metrics. In some cases, patients genomic DNA was screened for sequence variations (large deletions, insertions and duplications) by Multiplex Ligation-dependent Probe Amplification (MCR Holland).
PreviouslyPublished: NA
Gene: VWF
Variant: c.1530G > A, p.(Val510 =) p.
HGVS: NM_000552.5:c.1530G>A (p.Val510=)
ClinVarID:
CAID: CA6403368
gnomAD: MAF of 0.00002198 (2/91004 alleles) in South Asian population https://gnomad.broadinstitute.org/variant/chr12-6062957-C-T?dataset=gnomad_r4
Variant: c.1892C > T, p.(Ala631Val)
HGVS: NM_000552.5:c.1892C>T (p.Ala631Val)
ClinVarID: 422844
CAID: CA6403245
gnomAD: MAF of 0.001908 (137/71810 alleles) in African/African American population https://gnomad.broadinstitute.org/variant/chr12-6056910-G-A?dataset=gnomad_r4
Variant: c.2220G > A, p.(Met740Ile)
HGVS: NM_000552.5:c.2220G>A (p.Met740Ile)
ClinVarID: 100206
CAID: CA201316
gnomAD: MAF of 0.1816 (13626/75022 alleles) in African/African American population https://gnomad.broadinstitute.org/variant/chr12-6046784-C-T?dataset=gnomad_r4
Variant: c.2451T > A, p.(His817Gln)
HGVS: NM_000552.5:c.2451T>A (p.His817Gln)
ClinVarID: 100224
CAID: CA228345
gnomAD: MAF of 0.1150 (8626/75016 alleles) in African/African American population https://gnomad.broadinstitute.org/variant/chr12-6036483-A-T?dataset=gnomad_r4
Variant: c.3426T > C, p.(Cys1142 =)
HGVS: NM_000552.5:c.3426T>C (p.Cys1142=)
ClinVarID: 256668
CAID: CA6402757
gnomAD: MAF of 0.2077 (7935/38206 alleles) in African/African American population https://gnomad.broadinstitute.org/variant/chr12-6022852-A-G?dataset=gnomad_r4
Variant: c.3445T > C, p.(Cys1149Arg)
HGVS: NM_000552.5:c.3445T>C (p.Cys1149Arg)
ClinVarID: 309
CAID: CA228410
gnomAD: MAF of 0.000003160 (1/316464 alleles) in European (non-Finnish) population https://gnomad.broadinstitute.org/variant/chr12-6022833-A-G?dataset=gnomad_r4
Variant: c.3485C > T, p.(Pro1162Leu)
HGVS: NM_000552.5(VWF):c.3485C>T (p.Pro1162Leu)
ClinVarID: 256669
CAID: CA6402756
gnomAD: MAF of 0.2076 (7087/34136 alleles) in African/African American population https://gnomad.broadinstitute.org/variant/chr12-6022793-G-A?dataset=gnomad_r4
Variant: c.3486A > G, p.(Pro1162 =)
HGVS: NM_000552.5:c.3486A>G (p.Pro1162=)
ClinVarID: 256670
CAID: CA6402755
gnomAD: MAF of 0.2083 (7074/33968 alleles) in African/African American population https://gnomad.broadinstitute.org/variant/chr12-6022792-T-C?dataset=gnomad_r4
Variant: c.4414G > C p.(Asp1472His)
HGVS: NM_000552.5:c.4414G>C (p.Asp1472His)
ClinVarID: 256679
CAID: CA6402534
gnomAD: MAF of 0.5076 (38011/74882 alleles) in African/African American population https://gnomad.broadinstitute.org/variant/chr12-6019004-C-G?dataset=gnomad_r4
Variant: c.6554G > A, p.(Arg2185Gln)
HGVS: NM_000552.5:c.6554G>A (p.Arg2185Gln)
ClinVarID: 100443
CAID: CA228748
gnomAD: MAF of 0.1927 (14427/74878 alleles) in African/African American population https://gnomad.broadinstitute.org/variant/chr12-5993906-C-T?dataset=gnomad_r4
53 Z
Case: Patient 53, Family Z (Table 1.), F/92, Afro-Caribbean
DiseaseAssertion: VWD1
FamilyInfo: NA
ParentalGenotype(s): NA
CasePresentingHPOs:
CaseHPOFreeRext: BAT = 0, FVIII:C (IU/dL) = 33, VWF:Ag (IU/dL) = 35, VWF:Act (IU/dL) = 30
CaseNOTHPOs:
CaseNOTHPOFreeText: Blood group O+
CasePreviousTesting:
GenotypingMethod: All samples were analyzed by captured-based high throughput sequencing which was performed with a custom-design of the VWF gene provided by Twist BioScience (San Francisco, USA). It comprised all 52 exons, intronic flanking regions, promoter and 3’UTR region of the VWF gene. Libraries were prepared by using the Twist NGS target enrichment solution (Twist BioScience) according to the manufacturer protocol. Samples were analyzed on a NovaSeq 6000 sequencer (Illumina) with a median read depth of 2500X by using the 300-cycle S1 NovaSeq 6000seq reagent kit with 150-bp paired-end reads. The raw data were analyzed with Mutect21 and Vardict2 tools. The inhouse NGSreport software (CHU Lille) was used for data visualization, sequences check and conservation of variants with high quality metrics. In some cases, patients genomic DNA was screened for sequence variations (large deletions, insertions and duplications) by Multiplex Ligation-dependent Probe Amplification (MCR Holland).
PreviouslyPublished: NA
Variant: c.2220G > A, p.(Met740Ile)
HGVS: NM_000552.5:c.2220G>A (p.Met740Ile)
ClinVarID: 100206
CAID: CA201316
gnomAD: MAF of 0.1816 (13626/75022 alleles) in African/African American population https://gnomad.broadinstitute.org/variant/chr12-6046784-C-T?dataset=gnomad_r4
Variant: c.2451T > A, p.(His817Gln)
HGVS: NM_000552.5:c.2451T>A (p.His817Gln)
ClinVarID: 100224
CAID: CA228345
gnomAD: MAF of 0.1150 (8626/75016 alleles) in African/African American population https://gnomad.broadinstitute.org/variant/chr12-6036483-A-T?dataset=gnomad_r4
Variant: c.3258C > T, p.(Tyr1086 =)
HGVS: NM_000552.5:c.3258C>T (p.Tyr1086=)
ClinVarID: 256664
CAID: CA6402788
gnomAD: MAF of 0.1284 (9131/71128 alleles) in African/African American population https://gnomad.broadinstitute.org/variant/chr12-6023752-G-A?dataset=gnomad_r4
Variant: c.4414G > C p.(Asp1472His)
HGVS: NM_000552.5:c.4414G>C (p.Asp1472His)
ClinVarID: 256679
CAID: CA6402534
gnomAD: MAF of 0.5076 (38011/74882 alleles) in African/African American population https://gnomad.broadinstitute.org/variant/chr12-6019004-C-G?dataset=gnomad_r4
Variant: c.6554G > A, p.(Arg2185Gln)
HGVS: NM_000552.5:c.6554G>A (p.Arg2185Gln)
ClinVarID: 100443
CAID: CA228748
gnomAD: MAF of 0.1927 (14427/74878 alleles) in African/African American population https://gnomad.broadinstitute.org/variant/chr12-5993906-C-T?dataset=gnomad_r4
Variant: c.6647del, (Cys2216Phefs*9)
HGVS: NM_000552.5:c.6647del (p.Cys2216Phefs*9)
ClinVarID:
CAID: CA2695216024
gnomAD:
Variant: c.6859C > T, p.(Arg2287Trp)
HGVS: NM_000552.5:c.6859C>T (p.Arg2287Trp)
ClinVarID: 100450
CAID: CA228760
gnomAD: MAF of 0.008928 (670/75044 alleles) in African/African American population https://gnomad.broadinstitute.org/variant/chr12-5985605-G-A?dataset=gnomad_r4
21 I
Case: Patient 21, Family I (Table 1.), F/97, Afro-Caribbean
DiseaseAssertion: VWD2A (IIE)
FamilyInfo: Patient 13 (F/65, Afro-Caribbean), Patient 22 (F/67, Afro-Caribbean), Patient 23 (F/86, Afro-Caribbean), Patient 24 (F/92, Afro-Caribbean), Patient 25 (F/62, Afro-Carribean) also from Family I. (Table 1.)
ParentalGenotype(s): NA
CasePresentingHPOs:
CaseHPOFreeRext: BAT =0, FVIII:C (IU/dL) = 35, VWF:Ag (IU/dL) = 25, VWF:Act (IU/dL) = 8
CaseNOTHPOs:
CaseNOTHPOFreeText: Blood group B+
CasePreviousTesting:
GenotypingMethod: All samples were analyzed by captured-based high throughput sequencing which was performed with a custom-design of the VWF gene provided by Twist BioScience (San Francisco, USA). It comprised all 52 exons, intronic flanking regions, promoter and 3’UTR region of the VWF gene. Libraries were prepared by using the Twist NGS target enrichment solution (Twist BioScience) according to the manufacturer protocol. Samples were analyzed on a NovaSeq 6000 sequencer (Illumina) with a median read depth of 2500X by using the 300-cycle S1 NovaSeq 6000seq reagent kit with 150-bp paired-end reads. The raw data were analyzed with Mutect21 and Vardict2 tools. The inhouse NGSreport software (CHU Lille) was used for data visualization, sequences check and conservation of variants with high quality metrics. In some cases, patients genomic DNA was screened for sequence variations (large deletions, insertions and duplications) by Multiplex Ligation-dependent Probe Amplification (MCR Holland).
PreviouslyPublished: NA
Gene: VWF
Variant: c.1530G > A, p.(Val510 =) p.
HGVS: NM_000552.5:c.1530G>A (p.Val510=)
ClinVarID:
CAID: CA6403368
gnomAD: MAF of 0.00002198 (2/91004 alleles) in South Asian population https://gnomad.broadinstitute.org/variant/chr12-6062957-C-T?dataset=gnomad_r4
Variant: c.1892C > T, p.(Ala631Val)
HGVS: NM_000552.5:c.1892C>T (p.Ala631Val)
ClinVarID: 422844
CAID: CA6403245
gnomAD: MAF of 0.001908 (137/71810 alleles) in African/African American population https://gnomad.broadinstitute.org/variant/chr12-6056910-G-A?dataset=gnomad_r4
Variant: c.2220G > A, p.(Met740Ile)
HGVS: NM_000552.5:c.2220G>A (p.Met740Ile)
ClinVarID: 100206
CAID: CA201316
gnomAD: MAF of 0.1816 (13626/75022 alleles) in African/African American population https://gnomad.broadinstitute.org/variant/chr12-6046784-C-T?dataset=gnomad_r4
Variant: c.2451T > A, p.(His817Gln)
HGVS: NM_000552.5:c.2451T>A (p.His817Gln)
ClinVarID: 100224
CAID: CA228345
gnomAD: MAF of 0.1150 (8626/75016 alleles) in African/African American population https://gnomad.broadinstitute.org/variant/chr12-6036483-A-T?dataset=gnomad_r4
Variant: c.3258C > T, p.(Tyr1086 =)
HGVS: NM_000552.5:c.3258C>T (p.Tyr1086=)
ClinVarID: 256664
CAID: CA6402788
gnomAD: MAF of 0.1284 (9131/71128 alleles) in African/African American population https://gnomad.broadinstitute.org/variant/chr12-6023752-G-A?dataset=gnomad_r4
Variant: c.3445T > C, p.(Cys1149Arg)
HGVS: NM_000552.5:c.3445T>C (p.Cys1149Arg)
ClinVarID: 309
CAID: CA228410
gnomAD: MAF of 0.000003160 (1/316464 alleles) in European (non-Finnish) population https://gnomad.broadinstitute.org/variant/chr12-6022833-A-G?dataset=gnomad_r4
Variant: c.4414G > C p.(Asp1472His)
HGVS: NM_000552.5:c.4414G>C (p.Asp1472His)
ClinVarID: 256679
CAID: CA6402534
gnomAD: MAF of 0.5076 (38011/74882 alleles) in African/African American population https://gnomad.broadinstitute.org/variant/chr12-6019004-C-G?dataset=gnomad_r4
Variant: c.6554G > A, p.(Arg2185Gln)
HGVS: NM_000552.5:c.6554G>A (p.Arg2185Gln)
ClinVarID: 100443
CAID: CA228748
gnomAD: MAF of 0.1927 (14427/74878 alleles) in African/African American population https://gnomad.broadinstitute.org/variant/chr12-5993906-C-T?dataset=gnomad_r4
14 J
Case: Patient 14, Family J (Table 1.), M/36, Afro-Caribbean
DiseaseAssertion: VWD2A (IIE)
FamilyInfo: Patient 15 (F/64, Afro-Carribean) also from Family J. (Table 1.)
ParentalGenotype(s): NA
CasePresentingHPOs:
CaseHPOFreeRext: BAT =0, FVIII:C (IU/dL) = 25, VWF:Ag (IU/dL) = 25, VWF:Act (IU/dL) = 8
CaseNOTHPOs:
CaseNOTHPOFreeText:
CasePreviousTesting:
GenotypingMethod: All samples were analyzed by captured-based high throughput sequencing which was performed with a custom-design of the VWF gene provided by Twist BioScience (San Francisco, USA). It comprised all 52 exons, intronic flanking regions, promoter and 3’UTR region of the VWF gene. Libraries were prepared by using the Twist NGS target enrichment solution (Twist BioScience) according to the manufacturer protocol. Samples were analyzed on a NovaSeq 6000 sequencer (Illumina) with a median read depth of 2500X by using the 300-cycle S1 NovaSeq 6000seq reagent kit with 150-bp paired-end reads. The raw data were analyzed with Mutect21 and Vardict2 tools. The inhouse NGSreport software (CHU Lille) was used for data visualization, sequences check and conservation of variants with high quality metrics. In some cases, patients genomic DNA was screened for sequence variations (large deletions, insertions and duplications) by Multiplex Ligation-dependent Probe Amplification (MCR Holland).
PreviouslyPublished: NA
Gene: VWF
Variant: c.3505T > A, p.(Cys1169Ser)
HGVS: NM_000552.5:c.3505T>A (p.Cys1169Ser)
ClinVarID:
CAID: CA383511219
gnomAD:
Variant: c.4414G > C p.(Asp1472His)
HGVS: NM_000552.5:c.4414G>C (p.Asp1472His)
ClinVarID: 256679
CAID: CA6402534
gnomAD: MAF of 0.5076 (38011/74882 alleles) in African/African American population https://gnomad.broadinstitute.org/variant/chr12-6019004-C-G?dataset=gnomad_r4
25 I
Case: Patient 25, Family I (Table 1.), F/62, Afro-Caribbean
DiseaseAssertion: VWD2A (IIE)
FamilyInfo: Patient 13 (F/65, Afro-Caribbean), Patient 21 (F/97, Afro-Caribbean), Patient 22 (F/67, Afro-Caribbean), Patient 23 (F/86, Afro-Caribbean), Patient 24 (F/92, Afro-Carribean) also from Family I. (Table 1.)
ParentalGenotype(s): NA
CasePresentingHPOs:
CaseHPOFreeRext: BAT =6, FVIII:C (IU/dL) = 16, VWF:Ag (IU/dL) = 25, VWF:Act (IU/dL) = 14
CaseNOTHPOs:
CaseNOTHPOFreeText: Blood group B+
CasePreviousTesting:
GenotypingMethod: All samples were analyzed by captured-based high throughput sequencing which was performed with a custom-design of the VWF gene provided by Twist BioScience (San Francisco, USA). It comprised all 52 exons, intronic flanking regions, promoter and 3’UTR region of the VWF gene. Libraries were prepared by using the Twist NGS target enrichment solution (Twist BioScience) according to the manufacturer protocol. Samples were analyzed on a NovaSeq 6000 sequencer (Illumina) with a median read depth of 2500X by using the 300-cycle S1 NovaSeq 6000seq reagent kit with 150-bp paired-end reads. The raw data were analyzed with Mutect21 and Vardict2 tools. The inhouse NGSreport software (CHU Lille) was used for data visualization, sequences check and conservation of variants with high quality metrics. In some cases, patients genomic DNA was screened for sequence variations (large deletions, insertions and duplications) by Multiplex Ligation-dependent Probe Amplification (MCR Holland).
PreviouslyPublished: NA
Gene: VWF
Variant: c.1530G > A, p.(Val510 =) p.
HGVS: NM_000552.5:c.1530G>A (p.Val510=)
ClinVarID:
CAID: CA6403368
gnomAD: MAF of 0.00002198 (2/91004 alleles) in South Asian population https://gnomad.broadinstitute.org/variant/chr12-6062957-C-T?dataset=gnomad_r4
Variant: c.1892C > T, p.(Ala631Val)
HGVS: NM_000552.5:c.1892C>T (p.Ala631Val)
ClinVarID: 422844
CAID: CA6403245
gnomAD: MAF of 0.001908 (137/71810 alleles) in African/African American population https://gnomad.broadinstitute.org/variant/chr12-6056910-G-A?dataset=gnomad_r4
Variant: c.2220G > A, p.(Met740Ile)
HGVS: NM_000552.5:c.2220G>A (p.Met740Ile)
ClinVarID: 100206
CAID: CA201316
gnomAD: MAF of 0.1816 (13626/75022 alleles) in African/African American population https://gnomad.broadinstitute.org/variant/chr12-6046784-C-T?dataset=gnomad_r4
Variant: c.2451T > A, p.(His817Gln)
HGVS: NM_000552.5:c.2451T>A (p.His817Gln)
ClinVarID: 100224
CAID: CA228345
gnomAD: MAF of 0.1150 (8626/75016 alleles) in African/African American population https://gnomad.broadinstitute.org/variant/chr12-6036483-A-T?dataset=gnomad_r4
Variant: c.3258C > T, p.(Tyr1086 =)
HGVS: NM_000552.5:c.3258C>T (p.Tyr1086=)
ClinVarID: 256664
CAID: CA6402788
gnomAD: MAF of 0.1284 (9131/71128 alleles) in African/African American population https://gnomad.broadinstitute.org/variant/chr12-6023752-G-A?dataset=gnomad_r4
Variant: c.3445T > C, p.(Cys1149Arg)
HGVS: NM_000552.5:c.3445T>C (p.Cys1149Arg)
ClinVarID: 309
CAID: CA228410
gnomAD: MAF of 0.000003160 (1/316464 alleles) in European (non-Finnish) population https://gnomad.broadinstitute.org/variant/chr12-6022833-A-G?dataset=gnomad_r4
Variant: c.4138A > G, p.(Ile1380Val)
HGVS: NM_000552.5:c.4138A>G (p.Ile1380Val)
ClinVarID: 310063
CAID: CA6402595
gnomAD: MAF of 0.1184 (8878/74958 alleles) in African/African American population https://gnomad.broadinstitute.org/variant/chr12-6019280-T-C?dataset=gnomad_r4
Variant: c.4304A > G, p.(Asn1435Ser)
HGVS: NM_000552.5:c.4304A>G (p.Asn1435Ser)
ClinVarID: 310062
CAID: CA6402552
gnomAD: MAF of 0.1124 (8427/74964 alleles) in African/African American population https://gnomad.broadinstitute.org/variant/chr12-6019114-T-C?dataset=gnomad_r4
Variant: c.4414G > C p.(Asp1472His)
HGVS: NM_000552.5:c.4414G>C (p.Asp1472His)
ClinVarID: 256679
CAID: CA6402534
gnomAD: MAF of 0.5076 (38011/74882 alleles) in African/African American population https://gnomad.broadinstitute.org/variant/chr12-6019004-C-G?dataset=gnomad_r4
Variant: c.6554G > A, p.(Arg2185Gln)
HGVS: NM_000552.5:c.6554G>A (p.Arg2185Gln)
ClinVarID: 100443
CAID: CA228748
gnomAD: MAF of 0.1927 (14427/74878 alleles) in African/African American population https://gnomad.broadinstitute.org/variant/chr12-5993906-C-T?dataset=gnomad_r4
12 H
Case: Patient 12, Family H (Table 1.), F/99, Afro-Caribbean
DiseaseAssertion: VWD2A (IIE)
FamilyInfo: Patient 11 (M/71, Afro-Caribbean) also from Family H. (Table 1.)
ParentalGenotype(s): NA
CasePresentingHPOs:
CaseHPOFreeRext: BAT =8, FVIII:C (IU/dL) = 56, VWF:Ag (IU/dL) = 15, VWF:Act (IU/dL) = 24
CaseNOTHPOs:
CaseNOTHPOFreeText: Blood group O+
CasePreviousTesting:
GenotypingMethod: All samples were analyzed by captured-based high throughput sequencing which was performed with a custom-design of the VWF gene provided by Twist BioScience (San Francisco, USA). It comprised all 52 exons, intronic flanking regions, promoter and 3’UTR region of the VWF gene. Libraries were prepared by using the Twist NGS target enrichment solution (Twist BioScience) according to the manufacturer protocol. Samples were analyzed on a NovaSeq 6000 sequencer (Illumina) with a median read depth of 2500X by using the 300-cycle S1 NovaSeq 6000seq reagent kit with 150-bp paired-end reads. The raw data were analyzed with Mutect21 and Vardict2 tools. The inhouse NGSreport software (CHU Lille) was used for data visualization, sequences check and conservation of variants with high quality metrics. In some cases, patients genomic DNA was screened for sequence variations (large deletions, insertions and duplications) by Multiplex Ligation-dependent Probe Amplification (MCR Holland).
PreviouslyPublished: NA
Gene: VWF
Variant: c.1530G > A, p.(Val510 =) p.
HGVS: NM_000552.5:c.1530G>A (p.Val510=)
ClinVarID:
CAID: CA6403368
gnomAD: MAF of 0.00002198 (2/91004 alleles) in South Asian population https://gnomad.broadinstitute.org/variant/chr12-6062957-C-T?dataset=gnomad_r4
Variant: c.1892C > T, p.(Ala631Val)
HGVS: NM_000552.5:c.1892C>T (p.Ala631Val)
ClinVarID: 422844
CAID: CA6403245
gnomAD: MAF of 0.001908 (137/71810 alleles) in African/African American population https://gnomad.broadinstitute.org/variant/chr12-6056910-G-A?dataset=gnomad_r4
Variant: c.2220G > A, p.(Met740Ile)
HGVS: NM_000552.5:c.2220G>A (p.Met740Ile)
ClinVarID: 100206
CAID: CA201316
gnomAD: MAF of 0.1816 (13626/75022 alleles) in African/African American population https://gnomad.broadinstitute.org/variant/chr12-6046784-C-T?dataset=gnomad_r4
Variant: c.2451T > A, p.(His817Gln)
HGVS: NM_000552.5:c.2451T>A (p.His817Gln)
ClinVarID: 100224
CAID: CA228345
gnomAD: MAF of 0.1150 (8626/75016 alleles) in African/African American population https://gnomad.broadinstitute.org/variant/chr12-6036483-A-T?dataset=gnomad_r4
Variant: c.3445T > C, p.(Cys1149Arg)
HGVS: NM_000552.5:c.3445T>C (p.Cys1149Arg)
ClinVarID: 309
CAID: CA228410
gnomAD: MAF of 0.000003160 (1/316464 alleles) in European (non-Finnish) population https://gnomad.broadinstitute.org/variant/chr12-6022833-A-G?dataset=gnomad_r4
Variant: c.4414G > C p.(Asp1472His)
HGVS: NM_000552.5:c.4414G>C (p.Asp1472His)
ClinVarID: 256679
CAID: CA6402534
gnomAD: MAF of 0.5076 (38011/74882 alleles) in African/African American population https://gnomad.broadinstitute.org/variant/chr12-6019004-C-G?dataset=gnomad_r4
Variant: c.6554G > A, p.(Arg2185Gln)
HGVS: NM_000552.5:c.6554G>A (p.Arg2185Gln)
ClinVarID: 100443
CAID: CA228748
gnomAD: MAF of 0.1927 (14427/74878 alleles) in African/African American population https://gnomad.broadinstitute.org/variant/chr12-5993906-C-T?dataset=gnomad_r4
3 B
Case: Patient 3, Family B (Table 1.), M/30, Afro-Caribbean
DiseaseAssertion: VWD2A (IIE)
FamilyInfo: Patient 5 (F/47, Afro-Caribbean) from same family B (Table 1.).
ParentalGenotype(s): NA
CasePresentingHPOs:
CaseHPOFreeRext: BAT = 4, FVIII:C (IU/dL) = 14, VWF:Ag (IU/dL) = 10, VWF:Act (IU/dL) = 4.9
CaseNOTHPOs:
CaseNOTHPOFreeText: Blood group O+
CasePreviousTesting:
GenotypingMethod: All samples were analyzed by captured-based high throughput sequencing which was performed with a custom-design of the VWF gene provided by Twist BioScience (San Francisco, USA). It comprised all 52 exons, intronic flanking regions, promoter and 3’UTR region of the VWF gene. Libraries were prepared by using the Twist NGS target enrichment solution (Twist BioScience) according to the manufacturer protocol. Samples were analyzed on a NovaSeq 6000 sequencer (Illumina) with a median read depth of 2500X by using the 300-cycle S1 NovaSeq 6000seq reagent kit with 150-bp paired-end reads. The raw data were analyzed with Mutect21 and Vardict2 tools. The inhouse NGSreport software (CHU Lille) was used for data visualization, sequences check and conservation of variants with high quality metrics. In some cases, patients genomic DNA was screened for sequence variations (large deletions, insertions and duplications) by Multiplex Ligation-dependent Probe Amplification (MCR Holland).
PreviouslyPublished: NA
Gene: VWF
Variant: c.2739A > C, p.(Gly913 =)
HGVS: NM_000552.5:c.2739A>C p.(Gly913=)
ClinVarID: 1336650
CAID: CA6402959
gnomAD: MAF of 0.003374 (253/74996 alleles) in African/African American population https://gnomad.broadinstitute.org/variant/12-6031525-T-G?dataset=gnomad_r4
Variant: c.2815G > A, p.(Gly939Arg)
HGVS: NM_000552.5:c.2815G>A (p.Gly939Arg)
ClinVarID: 2500546
CAID: CA6402950
gnomAD: MAF of 0.0009595 (72/75038 alleles) in African/African American population https://gnomad.broadinstitute.org/variant/12-6031449-C-T?dataset=gnomad_r4
Variant: c.3101_3103delCCA (p.Thr1034del)
HGVS: NM_000552.5:c.3101_3103delCCA (p.Thr1034del)
ClinVarID: 802812
CAID: CA6402852
gnomAD: MAF of 0.01532 (1150/7504 alleles) in African/African American population https://gnomad.broadinstitute.org/variant/chr12-6025910-CTGG-C?dataset=gnomad_r4
Variant: c.4138A > G, p.(Ile1380Val)
HGVS: NM_000552.5:c.4138A>G (p.Ile1380Val)
ClinVarID: 310063
CAID: CA6402595
gnomAD: MAF of 0.1184 (8878/74958 alleles) in African/African American population https://gnomad.broadinstitute.org/variant/chr12-6019280-T-C?dataset=gnomad_r4
Variant: c.4304A > G p.(Asn1435Ser)
HGVS: NM_000552.5:c.4304A>G (p.Asn1435Ser)
ClinVarID: 310062
CAID: CA6402552
gnomAD: MAF of 0.1124 (8427/74964 alleles) in Africa/African American population https://gnomad.broadinstitute.org/variant/chr12-6019114-T-C?dataset=gnomad_r4
Variant: c.4414G > C p.(Asp1472His)
HGVS: NM_000552.5:c.4414G>C (p.Asp1472His)
ClinVarID: 256679
CAID: CA6402534
gnomAD: MAF of 0.5076 (38011/74882 alleles) in African/African American population https://gnomad.broadinstitute.org/variant/chr12-6019004-C-G?dataset=gnomad_r4
7 E
Case: Patient 7, Family E (Table 1.), M/47, Afro-Caribbean
DiseaseAssertion: VWD2A (IIE)
FamilyInfo: NA
ParentalGenotype(s): NA
CasePresentingHPOs:
CaseHPOFreeRext: BAT = 1, FVIII:C (IU/dL) = 15, VWF:Ag (IU/dL) = 15, VWF:Act (IU/dL) = 11
CaseNOTHPOs:
CaseNOTHPOFreeText: Blood group O+
CasePreviousTesting:
GenotypingMethod: All samples were analyzed by captured-based high throughput sequencing which was performed with a custom-design of the VWF gene provided by Twist BioScience (San Francisco, USA). It comprised all 52 exons, intronic flanking regions, promoter and 3’UTR region of the VWF gene. Libraries were prepared by using the Twist NGS target enrichment solution (Twist BioScience) according to the manufacturer protocol. Samples were analyzed on a NovaSeq 6000 sequencer (Illumina) with a median read depth of 2500X by using the 300-cycle S1 NovaSeq 6000seq reagent kit with 150-bp paired-end reads. The raw data were analyzed with Mutect21 and Vardict2 tools. The inhouse NGSreport software (CHU Lille) was used for data visualization, sequences check and conservation of variants with high quality metrics. In some cases, patients genomic DNA was screened for sequence variations (large deletions, insertions and duplications) by Multiplex Ligation-dependent Probe Amplification (MCR Holland).
PreviouslyPublished: NA
Gene: VWF
Variant: c.1530G > A, p.(Val510 =) p.
HGVS: NM_000552.5:c.1530G>A (p.Val510=)
ClinVarID:
CAID: CA6403368
gnomAD: MAF of 0.00002198 (2/91004 alleles) in South Asian population https://gnomad.broadinstitute.org/variant/chr12-6062957-C-T?dataset=gnomad_r4
Variant: c.1892C > T, p.(Ala631Val)
HGVS: NM_000552.5:c.1892C>T (p.Ala631Val)
ClinVarID: 422844
CAID: CA6403245
gnomAD: MAF of 0.001908 (137/71810 alleles) in African/African American population https://gnomad.broadinstitute.org/variant/chr12-6056910-G-A?dataset=gnomad_r4
Variant: c.2220G > A, p.(Met740Ile)
HGVS: NM_000552.5:c.2220G>A (p.Met740Ile)
ClinVarID: 100206
CAID: CA201316
gnomAD: MAF of 0.1816 (13626/75022 alleles) in African/African American population https://gnomad.broadinstitute.org/variant/chr12-6046784-C-T?dataset=gnomad_r4
Variant: c.2451T > A, p.(His817Gln)
HGVS: NM_000552.5:c.2451T>A (p.His817Gln)
ClinVarID: 100224
CAID: CA228345
gnomAD: MAF of 0.1150 (8626/75016 alleles) in African/African American population https://gnomad.broadinstitute.org/variant/chr12-6036483-A-T?dataset=gnomad_r4
Variant: c.3445T > C, p.(Cys1149Arg)
HGVS: NM_000552.5:c.3445T>C (p.Cys1149Arg)
ClinVarID: 309
CAID: CA228410
gnomAD: MAF of 0.000003160 (1/316464 alleles) in European (non-Finnish) population https://gnomad.broadinstitute.org/variant/chr12-6022833-A-G?dataset=gnomad_r4
Variant: c.4414G > C p.(Asp1472His)
HGVS: NM_000552.5:c.4414G>C (p.Asp1472His)
ClinVarID: 256679
CAID: CA6402534
gnomAD: MAF of 0.5076 (38011/74882 alleles) in African/African American population https://gnomad.broadinstitute.org/variant/chr12-6019004-C-G?dataset=gnomad_r4
Variant: c.6554G > A, p.(Arg2185Gln)
HGVS: NM_000552.5:c.6554G>A (p.Arg2185Gln)
ClinVarID: 100443
CAID: CA228748
gnomAD: MAF of 0.1927 (14427/74878 alleles) in African/African American population https://gnomad.broadinstitute.org/variant/chr12-5993906-C-T?dataset=gnomad_r4
6 D
Case: Patient 6, Family D (Table 1.), F/60, Afro-Caribbean
DiseaseAssertion: VWD2A (IIE)
FamilyInfo: NA
ParentalGenotype(s): NA
CasePresentingHPOs:
CaseHPOFreeRext: BAT = 12, FVIII:C (IU/dL) = 13, VWF:Ag (IU/dL) = 10, VWF:Act (IU/dL) = 12
CaseNOTHPOs:
CaseNOTHPOFreeText: Blood group O+
CasePreviousTesting:
GenotypingMethod: All samples were analyzed by captured-based high throughput sequencing which was performed with a custom-design of the VWF gene provided by Twist BioScience (San Francisco, USA). It comprised all 52 exons, intronic flanking regions, promoter and 3’UTR region of the VWF gene. Libraries were prepared by using the Twist NGS target enrichment solution (Twist BioScience) according to the manufacturer protocol. Samples were analyzed on a NovaSeq 6000 sequencer (Illumina) with a median read depth of 2500X by using the 300-cycle S1 NovaSeq 6000seq reagent kit with 150-bp paired-end reads. The raw data were analyzed with Mutect21 and Vardict2 tools. The inhouse NGSreport software (CHU Lille) was used for data visualization, sequences check and conservation of variants with high quality metrics. In some cases, patients genomic DNA was screened for sequence variations (large deletions, insertions and duplications) by Multiplex Ligation-dependent Probe Amplification (MCR Holland).
PreviouslyPublished: NA
Gene: VWF
Variant: c.1530G > A, p.(Val510 =) p.
HGVS: NM_000552.5:c.1530G>A (p.Val510=)
ClinVarID:
CAID: CA6403368
gnomAD: MAF of 0.00002198 (2/91004 alleles) in South Asian population https://gnomad.broadinstitute.org/variant/chr12-6062957-C-T?dataset=gnomad_r4
Variant: c.2451T > A, p.(His817Gln)
HGVS: NM_000552.5:c.2451T>A (p.His817Gln)
ClinVarID: 100224
CAID: CA228345
gnomAD: MAF of 0.1150 (8626/75016 alleles) in African/African American population https://gnomad.broadinstitute.org/variant/chr12-6036483-A-T?dataset=gnomad_r4
Variant: c.3258C > T, p.(Tyr1086 =)
HGVS: NM_000552.5:c.3258C>T (p.Tyr1086=)
ClinVarID: 256664
CAID: CA6402788
gnomAD: MAF of 0.1284 (9131/71128 alleles) in African/African American population https://gnomad.broadinstitute.org/variant/chr12-6023752-G-A?dataset=gnomad_r4
Variant: c.3426T > C, p.(Cys1142 =)
HGVS: NM_000552.5:c.3426T>C (p.Cys1142=)
ClinVarID: 256668
CAID: CA6402757
gnomAD: MAF of 0.2077 (7935/38206 alleles) in African/African American population https://gnomad.broadinstitute.org/variant/chr12-6022852-A-G?dataset=gnomad_r4
Variant: c.3445T > C, p.(Cys1149Arg)
HGVS: NM_000552.5:c.3445T>C (p.Cys1149Arg)
ClinVarID: 309
CAID: CA228410
gnomAD: MAF of 0.000003160 (1/316464 alleles) in European (non-Finnish) population https://gnomad.broadinstitute.org/variant/chr12-6022833-A-G?dataset=gnomad_r4
Variant: c.3485C > T, p.(Pro1162Leu)
HGVS: NM_000552.5:c.3485C>T (p.Pro1162Leu)
ClinVarID: 256669
CAID: CA6402756
gnomAD: MAF of 0.2076 (7087/34136 alleles) African/African American population https://gnomad.broadinstitute.org/variant/chr12-6022793-G-A?dataset=gnomad_r4
Variant: c.3486A > G, p.(Pro1162 =)
HGVS: NM_000552.5:c.3486A>G (p.Pro1162=)
ClinVarID: 256670
CAID: CA6402755
gnomAD: MAF of 0.2083 (7074/33968 alleles) in African/African American population https://gnomad.broadinstitute.org/variant/chr12-6022792-T-C?dataset=gnomad_r4
Variant: c.4414G > C p.(Asp1472His)
HGVS: NM_000552.5:c.4414G>C (p.Asp1472His)
ClinVarID: 256679
CAID: CA6402534
gnomAD: MAF of 0.5076 (38011/74882 alleles) in African/African American population https://gnomad.broadinstitute.org/variant/chr12-6019004-C-G?dataset=gnomad_r4
11 H
Case: Patient 11, Family H (Table 1.), M/71, Afro-Caribbean
DiseaseAssertion: VWD2A (IIE)
FamilyInfo: Patient 12 (F/99, Afro-Caribbean) also from Family H. (Table 1.)
ParentalGenotype(s): NA
CasePresentingHPOs:
CaseHPOFreeRext: BAT =15, FVIII:C (IU/dL) = 30, VWF:Ag (IU/dL) = 15, VWF:Act (IU/dL) = 7
CaseNOTHPOs:
CaseNOTHPOFreeText: Blood group O+
CasePreviousTesting:
GenotypingMethod: All samples were analyzed by captured-based high throughput sequencing which was performed with a custom-design of the VWF gene provided by Twist BioScience (San Francisco, USA). It comprised all 52 exons, intronic flanking regions, promoter and 3’UTR region of the VWF gene. Libraries were prepared by using the Twist NGS target enrichment solution (Twist BioScience) according to the manufacturer protocol. Samples were analyzed on a NovaSeq 6000 sequencer (Illumina) with a median read depth of 2500X by using the 300-cycle S1 NovaSeq 6000seq reagent kit with 150-bp paired-end reads. The raw data were analyzed with Mutect21 and Vardict2 tools. The inhouse NGSreport software (CHU Lille) was used for data visualization, sequences check and conservation of variants with high quality metrics. In some cases, patients genomic DNA was screened for sequence variations (large deletions, insertions and duplications) by Multiplex Ligation-dependent Probe Amplification (MCR Holland).
PreviouslyPublished: NA
Gene: VWF
Variant: c.1530G > A, p.(Val510 =) p.
HGVS: NM_000552.5:c.1530G>A (p.Val510=)
ClinVarID:
CAID: CA6403368
gnomAD: MAF of 0.00002198 (2/91004 alleles) in South Asian population https://gnomad.broadinstitute.org/variant/chr12-6062957-C-T?dataset=gnomad_r4
Variant: c.1892C > T, p.(Ala631Val)
HGVS: NM_000552.5:c.1892C>T (p.Ala631Val)
ClinVarID: 422844
CAID: CA6403245
gnomAD: MAF of 0.001908 (137/71810 alleles) in African/African American population https://gnomad.broadinstitute.org/variant/chr12-6056910-G-A?dataset=gnomad_r4
Variant: c.2220G > A, p.(Met740Ile)
HGVS: NM_000552.5:c.2220G>A (p.Met740Ile)
ClinVarID: 100206
CAID: CA201316
gnomAD: MAF of 0.1816 (13626/75022 alleles) in African/African American population https://gnomad.broadinstitute.org/variant/chr12-6046784-C-T?dataset=gnomad_r4
Variant: c.2451T > A, p.(His817Gln)
HGVS: NM_000552.5:c.2451T>A (p.His817Gln)
ClinVarID: 100224
CAID: CA228345
gnomAD: MAF of 0.1150 (8626/75016 alleles) in African/African American population https://gnomad.broadinstitute.org/variant/chr12-6036483-A-T?dataset=gnomad_r4
Variant: c.3445T > C, p.(Cys1149Arg)
HGVS: NM_000552.5:c.3445T>C (p.Cys1149Arg)
ClinVarID: 309
CAID: CA228410
gnomAD: MAF of 0.000003160 (1/316464 alleles) in European (non-Finnish) population https://gnomad.broadinstitute.org/variant/chr12-6022833-A-G?dataset=gnomad_r4
Variant: c.4414G > C p.(Asp1472His)
HGVS: NM_000552.5:c.4414G>C (p.Asp1472His)
ClinVarID: 256679
CAID: CA6402534
gnomAD: MAF of 0.5076 (38011/74882 alleles) in African/African American population https://gnomad.broadinstitute.org/variant/chr12-6019004-C-G?dataset=gnomad_r4
Variant: c.6554G > A, p.(Arg2185Gln)
HGVS: NM_000552.5:c.6554G>A (p.Arg2185Gln)
ClinVarID: 100443
CAID: CA228748
gnomAD: MAF of 0.1927 (14427/74878 alleles) in African/African American population https://gnomad.broadinstitute.org/variant/chr12-5993906-C-T?dataset=gnomad_r4
30 O
Case: Patient 30, Family O (Table 1.), M/42, Afro-Caribbean
DiseaseAssertion: VWD2A (IIE)
FamilyInfo: Patient 31 (F/73, Afro-Caribbean) also from Family O. (Table 1.)
ParentalGenotype(s): NA
CasePresentingHPOs:
CaseHPOFreeRext: BAT = 4, FVIII:C (IU/dL) = 35, VWF:Ag (IU/dL) = 10, VWF:Act (IU/dL) = 29
CaseNOTHPOs:
CaseNOTHPOFreeText: Blood group O+
CasePreviousTesting:
GenotypingMethod: All samples were analyzed by captured-based high throughput sequencing which was performed with a custom-design of the VWF gene provided by Twist BioScience (San Francisco, USA). It comprised all 52 exons, intronic flanking regions, promoter and 3’UTR region of the VWF gene. Libraries were prepared by using the Twist NGS target enrichment solution (Twist BioScience) according to the manufacturer protocol. Samples were analyzed on a NovaSeq 6000 sequencer (Illumina) with a median read depth of 2500X by using the 300-cycle S1 NovaSeq 6000seq reagent kit with 150-bp paired-end reads. The raw data were analyzed with Mutect21 and Vardict2 tools. The inhouse NGSreport software (CHU Lille) was used for data visualization, sequences check and conservation of variants with high quality metrics. In some cases, patients genomic DNA was screened for sequence variations (large deletions, insertions and duplications) by Multiplex Ligation-dependent Probe Amplification (MCR Holland).
PreviouslyPublished: NA
Gene: VWF
Variant: c.1530G > A, p.(Val510 =) p.
HGVS: NM_000552.5:c.1530G>A (p.Val510=)
ClinVarID:
CAID: CA6403368
gnomAD: MAF of 0.00002198 (2/91004 alleles) in South Asian population https://gnomad.broadinstitute.org/variant/chr12-6062957-C-T?dataset=gnomad_r4
Variant: c.1892C > T, p.(Ala631Val)
HGVS: NM_000552.5:c.1892C>T (p.Ala631Val)
ClinVarID: 422844
CAID: CA6403245
gnomAD: MAF of 0.001908 (137/71810 alleles) in African/African American population https://gnomad.broadinstitute.org/variant/chr12-6056910-G-A?dataset=gnomad_r4
Variant: c.2220G > A, p.(Met740Ile)
HGVS: NM_000552.5:c.2220G>A (p.Met740Ile)
ClinVarID: 100206
CAID: CA201316
gnomAD: MAF of 0.1816 (13626/75022 alleles) in African/African American population https://gnomad.broadinstitute.org/variant/chr12-6046784-C-T?dataset=gnomad_r4
Variant: c.2451T > A, p.(His817Gln)
HGVS: NM_000552.5:c.2451T>A (p.His817Gln)
ClinVarID: 100224
CAID: CA228345
gnomAD: MAF of 0.1150 (8626/75016 alleles) in African/African American population https://gnomad.broadinstitute.org/variant/chr12-6036483-A-T?dataset=gnomad_r4
Variant: c.3445T > C, p.(Cys1149Arg)
HGVS: NM_000552.5:c.3445T>C (p.Cys1149Arg)
ClinVarID: 309
CAID: CA228410
gnomAD: MAF of 0.000003160 (1/316464 alleles) in European (non-Finnish) population https://gnomad.broadinstitute.org/variant/chr12-6022833-A-G?dataset=gnomad_r4
Variant: c.4414G > C p.(Asp1472His)
HGVS: NM_000552.5:c.4414G>C (p.Asp1472His)
ClinVarID: 256679
CAID: CA6402534
gnomAD: MAF of 0.5076 (38011/74882 alleles) in African/African American population https://gnomad.broadinstitute.org/variant/chr12-6019004-C-G?dataset=gnomad_r4
Variant: c.6554G > A, p.(Arg2185Gln)
HGVS: NM_000552.5:c.6554G>A (p.Arg2185Gln)
ClinVarID: 100443
CAID: CA228748
gnomAD: MAF of 0.1927 (14427/74878 alleles) in African/African American population https://gnomad.broadinstitute.org/variant/chr12-5993906-C-T?dataset=gnomad_r4
The Chaperonin GroEL: A Versatile Tool for Applied Biotechnology Platforms
PMID: 29868607
Gene: VWF
HGNC: 12726
Disease: von Willebrand disease type 2M
MONDO: 0015630
InheritancePattern: Autosomal Dominant
Prevalence: Overall VWD prevalence is estimated to be as high as 1 in 100 in the general population, with 1 in 10,000 pursuing tertiary care referral (PMID: 28847738).
Penetrance: Fully penetrant / nearly fully penetrant for most pathogenic type 2 variants
III-1
III-1, Female 10 years old
disease assertion: VWD
**positive family history **
Parental Genotype: each has heterozygous, 3251G>A
CasePresentingHPOs: CaseHPOFreeText: BS 4, VWF Ag:0.38, *VWF:GPIbM:0.15,VWF:CB:0.13, VWFpp :0.76, FVIII:C:0.10
CaseNOTHPOs:* N.a.
CaseNOTHPOFreeText: n.a.
CasePreviousTesting: *GenotypingMethod: Sanger seqencing;
*PreviouslyPublished:n.a.
Gene:VWF Variant:c.3251G>A*
*HGVS:NM_000552.5:c.3251G>A
*CAID:n.a.
*gnomAD:n.a.
The co-influence of VWD type 2B/2M mutations in the A1 domain and platelet GPIbα on the rate of cleavage to VWF by ADAMTS13
PMID: 26345337
Gene: VWF
HGNC: 12726
Disease: von Willebrand disease type 2B
MONDO: 0015629
InheritancePattern: Autosomal Dominant
Prevalence: Overall VWD prevalence is estimated to be as high as 1 in 100 in the general population, with 1 in 10,000 pursuing tertiary care referral ((PMID: 28847738).
Penetrance: Fully penetrant / nearly fully penetrant for most pathogenic type 2 variants
P14
Case: P14, M/19
DiseaseAssertion: VWD1
FamilyInfo: Positive family history, no details provided.
ParentalGenotype: NA
CaseHPOFreeText: The bleeding score was 1, aPTT was 46 seconds, FVIII:C was 38%, VWF:RCo was 49 IU/dL, and VWF:Ag was 24 IU/dL, with a VWF:RCo/VWF:Ag ratio of 2.0. The VWF multimer pattern was normal, RIPA was not tested, and the platelet count was 240 × 10⁹/L.
CasePreviousTesting: NA
GenotypingMethod: Direct sequencing of all exons, flanking intronic sequences, and the promoter of VWF was performed.
Gene: VWF
Variant: no mutation detected
HGVS:
ClinVar:
CAID:
gnomAD:
P13
Case: P13, M/15
DiseaseAssertion: VWD1
FamilyInfo: No family history
ParentalGenotype: NA
CaseHPOFreeText: The bleeding score was 5, aPTT was 35 seconds, FVIII:C was 64%, VWF:RCo was 62 IU/dL, and VWF:Ag was 57 IU/dL, with a VWF:RCo/VWF:Ag ratio of 1.1. The VWF multimer pattern was normal, RIPA was not tested, and the platelet count was 240 × 10⁹/L.
CasePreviousTesting: NA
GenotypingMethod: Direct sequencing of all exons, flanking intronic sequences, and the promoter of VWF was performed.
Gene: VWF
Variant: no mutation detected
HGVS:
ClinVar:
CAID:
gnomAD:
P12
Case: P12, M/18
DiseaseAssertion: VWD1
FamilyInfo: No family history
ParentalGenotype: NA
CaseHPOFreeText: The bleeding score was 4, aPTT was 37 seconds, FVIII:C was 46%, VWF:RCo was 42 IU/dL, and VWF:Ag was 27 IU/dL, with a VWF:RCo/VWF:Ag ratio of 1.6. The VWF multimer pattern was normal, RIPA was 10 ohms, and the platelet count was 250 × 10⁹/L.
CasePreviousTesting: NA
GenotypingMethod: Direct sequencing of all exons, flanking intronic sequences, and the promoter of VWF was performed.
Gene: VWF
Variant: no mutation detected
HGVS:
ClinVar:
CAID:
gnomAD:
P11
Case: P11, M/19
DiseaseAssertion: VWD1
FamilyInfo: No family history
ParentalGenotype: NA
CaseHPOFreeText: The bleeding score was 3, aPTT was 49 seconds, FVIII:C was 29%, VWF:RCo was 42 IU/dL, and VWF:Ag was 58 IU/dL, with a VWF:RCo/VWF:Ag ratio of 0.7. The VWF multimer pattern was normal, RIPA was not tested, and the platelet count was 234 × 10⁹/L.
CasePreviousTesting: NA
GenotypingMethod: Direct sequencing of all exons, flanking intronic sequences, and the promoter of VWF was performed.
Gene: VWF
Variant: c.2289dupG, p.S764Efs*16 — heterozygous
HGVS: NM_000552.5(VWF):c.2289dup (p.Ser764GlufsTer16)
ClinVar:
CAID: CA2695215960
gnomAD: absent from gnomad v4.1.o
P9
Case: P9, M/26
DiseaseAssertion: VWD1
FamilyInfo: No family history
ParentalGenotype: NA
CaseHPOFreeText: The bleeding score was 1, aPTT was 44 seconds, FVIII:C was 9%, VWF:RCo was 13 IU/dL, and VWF:Ag was 6 IU/dL, with a VWF:RCo/VWF:Ag ratio of 2.0. The VWF multimer pattern was normal, RIPA was 3 ohms, and the platelet count was 217 × 10⁹/L.
CasePreviousTesting: NA
GenotypingMethod: Direct sequencing of all exons, flanking intronic sequences, and the promoter of VWF was performed.
Gene: VWF
Variant: c.3614G>A, p.R1205H — heterozygous
HGVS: NM_000552.5(VWF):c.3614G>A (p.Arg1205His)
ClinVar: 308
CAID: CA114160
gnomAD: https://gnomad.broadinstitute.org/variant/chr12-6021960-C-T?dataset=gnomad_r4
P8
Case: P8, M/32
DiseaseAssertion: VWD1
FamilyInfo: Positive family history, no details provided.
ParentalGenotype: NA
CaseHPOFreeText: The bleeding score was 7, aPTT was 39 seconds, FVIII:C was 10%, VWF:RCo was 14 IU/dL, and VWF:Ag was 13 IU/dL, resulting in a VWF:RCo/VWF:Ag ratio of 1.1. The VWF multimer pattern showed a mild loss of high molecular weight multimers, RIPA was not tested, and the platelet count was 286 × 10⁹/L.
CasePreviousTesting: NA
GenotypingMethod: Direct sequencing of all exons, flanking intronic sequences, and the promoter of VWF was performed.
Gene: VWF
Variant: c.2665T>C, p.C889R — heterozygous
HGVS: NM_000552.5(VWF):c.2665T>C (p.Cys889Arg)
ClinVar:
CAID: CA383519992
gnomAD: absent from gnomad v4.1.0
Recessive von Willebrand disease type 2 Normandy: variable expression of mild hemophilia and VWD type 1
PMID: 19506358
Case 13
Case: Case 13, ages 2-17, Croatian
DiseaseAssertion: VWF3
FamilyInfo:
ParentalGenotypes(s):
CasePresentingHPOs:
CaseHPOFreeText:
CaseNOTHPOs:
CaseNOTHPOFreeText: bleeding score= 5, VWF:GPIbM (%)= 7.8, VWF:Ag (%)= 9.7, vWF:GPIbM/vWF:Ag ratio= 0.80, FVIII:C (%): 34, VWF: CBA (%)= 7.8
CasePreviousTesting:
Gene: VWF
Variant: c.4975C>T, p.Arg1659Ter
HGVS: NM_000552.5:c.4975C>T
ClinVar: 297
gnomAD: https://gnomad.broadinstitute.org/variant/12-6127609-G-A?dataset=gnomad_r2_1
10*ItalyF/30<1—YesSevere4626C→GY1542X28HomozygousRsaI (−)
Case: 10, F, 30, Italian
DiseaseAssertion: VWD type 3
FamilyInfo: Consanguinity: yes
ParentalGenotype: n/a
CasePresentingHPOs: n/a
CaseHPOFreeText: VWF:Ag (U/dl): <1, Bleeding symptoms: Severe
CaseNotHPOs: n/a
CaseNotHPOFreeText: Anti-VWF alloantibodies: no
CasePreviousTesting: n/a
Gene: VWF
Variant:
4626C→G (Tyr1542X), Exon 28, Homozygous
35*IndiaM/42<1—NoMild8411G→AC2804Y52HomozygousRsaI (+)
Case: 35, M, 42, Indian
DiseaseAssertion: VWD type 3
FamilyInfo: Consanguinity: No
ParentalGenotype: n/a
CasePresentingHPOs: n/a
CaseHPOFreeText: VWF:Ag (U/dl): <1, Bleeding symptoms: Mild
CaseNotHPOs: n/a
CaseNotHPOFreeText: Anti-VWF alloantibodies: no
CasePreviousTesting: n/a
Gene: VWF
Variant:
8411G→A (Cys2804Tyr), Exon 52, Homozygous
Note: It is possible that the homozygous zygosity was detected from a PCR artifact (e.g. presence of a large gene deletion or point mutation that prevents amplification); different sets of primers were used, providing conformation and excluding the possibility for a PCR artifact due to point mutation.
7*ItalyF/36<1—NoSevere2435delC/5170+10C→T 253T→CFS/FS-S85P18/29-4HeterozygousBglI (−)/N.A.
Case: 7 , F, 36, Italian
DiseaseAssertion: VWD type 3
FamilyInfo: Consanguinity: no
ParentalGenotype:
2435delC on the maternal allele
5170+10C→T on the paternal allele
253T→C on the paternal allele
CasePresentingHPOs: n/a
CaseHPOFreeText: VWF:Ag (U/dl): <1, Bleeding symptoms: Severe
CaseNotHPOs: n/a
CaseNotHPOFreeText: Anti-VWF alloantibodies: no
CasePreviousTesting: n/a
Gene: VWF
Variant:
2435delC (FS), Exon 18
5170+10C→T (Intronic), Exon 29
253T→C (Ser85Pro), Exon 4
Compound Heterozygous
Note: Article assumes that 5170+10C→T would be a frameshift mutation. No potential splice site mutation was confirmed at the mRNA level; “Splice Site Prediction program” found all mutations likely to disrupt normal splicing. No possible splice site mutation could be identified on 100 chromosomes from a group of 50 normal subjects with same genetic background as patients, excluding the possibility that these mutations represent common polymorphisms.
39IndiaM/33<1—NoMild4092delAC/7130insCFS/FS28/42HeterozygousN.A./N.A.
Case: 39, M, 33, Indian
DiseaseAssertion: VWD type 3
FamilyInfo: Consanguinity: No
ParentalGenotype: n/a
CasePresentingHPOs: n/a
CaseHPOFreeText: VWF:Ag (U/dl): <1, Bleeding symptoms: Mild
CaseNotHPOs: n/a
CaseNotHPOFreeText: Anti-VWF alloantibodies: no
CasePreviousTesting: n/a
Gene: VWF
Variant:
4092delAC (FS), Exon 28
7130insC (FS), Exon 42
Compound Heterozygous
27*IndiaF/12<1—NoMild191delGFS3HomozygousAlwNI (+)
Case: 27, F, 12, Indian
DiseaseAssertion: VWD type 3
FamilyInfo: Consanguinity: No
ParentalGenotype: n/a
CasePresentingHPOs: n/a
CaseHPOFreeText: VWF:Ag (U/dl): <1, Bleeding symptoms: Mild
CaseNotHPOs: n/a
CaseNotHPOFreeText: Anti-VWF alloantibodies: no
CasePreviousTesting: n/a
Gene: VWF
Variant:
191delG (FS), Exon 3, Homozygous
Note: It is possible that the homozygous zygosity was detected from a PCR artifact (e.g. presence of a large gene deletion or point mutation that prevents amplification); different sets of primers were used, providing conformation and excluding the possibility for a PCR artifact due to point mutation.
3*ItalyF/21<1—NoSevere666G→A/823T→AW222X/C275S7/7HeterozygousN.A./BsrI (+)
Case: 3, F, 21, Italian
DiseaseAssertion: VWD type 3
FamilyInfo: Consanguinity: no
ParentalGenotype: n/a
CasePresentingHPOs: n/a
CaseHPOFreeText: VWF:Ag (U/dl): <1, Bleeding symptoms: Severe
CaseNotHPOs: n/a
CaseNotHPOFreeText: Anti-VWF alloantibodies: no
CasePreviousTesting: n/a
Gene: VWF
Variant:
666G→A (Trp222X), Exon 7
823T→A (Cys275Ser), Exon 7
Compound Heterozygous
2ItalyF/58<1—NoSevere421G→T/2016del4D141Y/FS5/16HeterozygousBstYI (+)/N.A.
Case: 2, F, 58, Italian
DiseaseAssertion: VWD type 3
FamilyInfo: Consanguinity: no
ParentalGenotype: n/a
CasePresentingHPOs: n/a
CaseHPOFreeText: VWF:Ag (U/dl): <1, Bleeding symptoms: Severe
CaseNotHPOs: n/a
CaseNotHPOFreeText: Anti-VWF alloantibodies: no
CasePreviousTesting: n/a
Gene: VWF
Variant:
421G→T (Asp141Tyr), Exon 5
2016del4 (FS), Exon 16
Compound Heterozygous
8*ItalyF/7<1—NoMild4013C→G/6385G→TS1338X/E2129X28/37HeterozygousN.A./MnlI (−)
Case: 8, F, 7, Italian
DiseaseAssertion: VWD type 3
FamilyInfo: Consanguinity: no
ParentalGenotype: n/a
CasePresentingHPOs: n/a
CaseHPOFreeText: VWF:Ag (U/dl): <1, Bleeding symptoms: Mild
CaseNotHPOs: n/a
CaseNotHPOFreeText: Anti-VWF alloantibodies: no
CasePreviousTesting: n/a
Gene: VWF
Variant:
4013C→G (Ser1338X), Exon 28
6385G→T (Glu2129X), Exon 37
Compound Heterozygous
Biochemical characterization of a recombinant von Willebrand factor (VWF) with combined type 2B and type 1 defects in the VWF gene in two patients with a type 2A phenotype of von Willebrand disease
PMID: 17155947
Gene: VWF
HGNC: 12726
Disease: von Willebrand disease type 2B
MONDO: 0015629
InheritancePattern: Autosomal Dominant
Prevalence: Overall VWD prevalence is estimated to be as high as 1 in 100 in the general population, with 1 in 10,000 pursuing tertiary care referral ((PMID: 28847738).
Penetrance: Fully penetrant / nearly fully penetrant for most pathogenic type 2 variants
II‐2
Variant: c.823T>C p.Cys275Arg - used family membevr III-2 as proband for PP4
Case#: Elayaperumal_2018_V-281, M, 2 y.o. (onset), origin in India
DiseaseAssertion: VWD type 3
FamilyInfo: Consanguinity, no family history of bleeding
ParentalGenotype: not reported
CasePresentingHPOs:
CaseHPOFreeText: bleeding score of 9, VWF:Ag of 0, FVIII:C of 3.5%
CaseNotHPOs:
CaseNotHPOFreeText:
CasePreviousTesting: not reported
GenotypingMethod: CSGE and Sanger sequencing of VWF gene only.
Gene: VWF
Variant: homozygous c.4696C>T (p.Arg1566*)
HGVS: NM_000552.3:c.4696C>T
ClinVarID: 100382
CAID: CA228639
gnomAD: MAF of 0.00001762 (2/113480 alleles, European non-Finnish) https://gnomad.broadinstitute.org/variant/12-6127888-G-A
MultipleGeneVariants: n/a
Case#: Elayaperumal_2018_V-290 , Male, 7 months (onset), origin in India
DiseaseAssertion: VWD type 3
FamilyInfo: no consanguinity reported. positive family history
ParentalGenotype: not reported
CasePresentingHPOs:
CaseHPOFreeText: bleeding score of 12, VWF:Ag 0, FVIII:C 9.2%
CaseNotHPOs:
CaseNotHPOFreeText:
CasePreviousTesting: not reported
GenotypingMethod: CSGE and Sanger sequencing of VWF gene only.
Gene: VWF
Variant: heterozygous c.6798+1G>C
HGVS: NM_000552.3:c.6798+1G>C
ClinVarID: not found
CAID: CA383489728
gnomAD: not found
MultipleGeneVariants:
Note: other allele not identified. Large deletion possible.
Case#: Elayaperumal_2018_V-319, F, 8 y.o. (onset), origin in India
DiseaseAssertion: VWD type 3
FamilyInfo: Consanguinity: No, Family history: Yes
ParentalGenotype: not reported
CasePresentingHPOs:
CaseHPOFreeText: Bleeding score: 14, VWF:Ag 0, FVIII:C <1%
CaseNotHPOs:
CaseNotHPOFreeText:
CasePreviousTesting: not reported
GenotypingMethod: CSGE and Sanger sequencing of VWF gene only.
Gene: VWF
Variant: homozygous c.6090dupT (p.Val2031Lysfs*19)
HGVS: NM_000552.3:c.6090dupT
ClinVarID: not present
CAID: CA2824998272
gnomAD: not present
MultipleGeneVariants:
A case report of type 2M Von Willebrand disease withunique mutations
Gene: VWF
HGNCID: 12726
Case: 55 year old female
DiseaseAssertion: type 2M VWD
FamilyInfo: one sister with VWD of unknown type. Four other siblings with no bleeding history.
CasePresentingHPOs: HP:0002239 (Gastrointestinal hemorrhage), Gastrointestinal angiodysplasia HP:0000471, Hemoptysis HP:0002105, Epistaxis HP:0000421, Menorrhagia HP:0000132
CaseHPOFreeRext: normal PT/aPTT. Von Willebrand panel shows vWF antigen of 33%, VWF ristocetin cofactor activity of 15%, and Factor VIII of 87%. The ratio (VWF: RCo/VWF: Ag) is low (0.45) and the multimer pattern is normal.
Gene: VWF
Variant: c.4241T>G (p.Val1414Gly) and c.5227G>A (p.Val1743Met)
ClinVarID: 619752, 801307
Functional characterization of a 13-bp deletion (c.-1522_-1510del13) in the promoter of the von Willebrand factor gene in type 1 von Willebrand disease
PMID: 20696945
Gene: VWF
HGNCID: 12726
2A
Case: 2A, female, 72yo
DiseaseAssertion: VWD2A
FamilyInfo:
ParentalGenotype(s):
CasePresentingHPOs:
CaseHPOFreeText: Blood type: O+, bleeding score = 19, VWF:Ag (IU/mL) = 0.07; VWF:RCo (IU/mL) = 0.06; FVIII:C (IU/mL) = 0.21
CaseNOTHPOs:
CaseNOTHPOFreeText:
CasePreviousTesting:
GenotypingMethod: qRT-PCR
PreviouslyPublished:
Gene: VWF
Variant: c.7130dupC (p.Pro2377Profs*14)
HGVS: n/a
ClinVarID: n/a
CAID: n/a
gnomAD: n/a
Abnormal angiogenesis in blood outgrowth endothelial cells derived from von Willebrand disease patients
PMID: 28362648
Gene: VWF
HGNCID: 12726
T3-2
Case: T3-2, female, 11yo
DiseaseAssertion: VWD3
FamilyInfo:
ParentalGenotype(s):
CasePresentingHPOs:
CaseHPOFreeText: Blood type: O+, bleeding score = 13, VWF:Ag (IU/mL) = 0.01; VWF:RCo (IU/mL) = 0.03; FVIII:C (IU/mL) = 0.01
CaseNOTHPOs:
CaseNOTHPOFreeText:
CasePreviousTesting:
GenotypingMethod: qRT-PCR
PreviouslyPublished:
Gene: VWF
Variant: c.1897T>C (p.Cys633Arg)
HGVS: NM_000552.5:c.1897T>C (p.Cys633Arg)
ClinVarID: n/a
CAID: CA383496953; https://reg.clinicalgenome.org/redmine/projects/registry/genboree_registry/by_caid?caid=CA383496953
gnomAD: absent
Case#: Kumar_2016_ , M, 9 months (report)
DiseaseAssertion: VWD type 2B
FamilyInfo: no family history, de novo assertion but no testing to prove it.
ParentalGenotype: not reported
CasePresentingHPOs:
CaseHPOFreeText: low von Willebrand factor (vWF) antigen (32%) and ristocetin cofactor activity (<8%). loss of high-molecular-weight multimers, bruising, extensive bleeding
CaseNotHPOs:
CaseNotHPOFreeText:
CasePreviousTesting: not reported
GenotypingMethod: exon 28 sequencing
Gene: VWF
Variant:
HGVS: NM_000552.5(VWF):c.3940G>C, p.V1314L
ClinVarID: 302
CAID:
gnomAD: not reported
MultipleGeneVariants:
Decreased severity of Shiga toxin-producing Escherichia coli haemolytic uraemic syndrome (STEC-HUS) in a child with type 1 von Willebrand disease
PMID: 28855217
Gene: VWF
HGNCID: 12726
143112−+14Mc.3622delT/c.3622delTp.S1208QfsX7/p.S1208QfsX727/2718/18N/N
Case: Patient 14, M, Hungarian
DiseaseAssertion: VWD type 3
FamilyInfo: compatible with recessive inheritance
ParentalGenotype(s): n/a
CasePresentingHPOs: n/a
CaseHPOFreeRext: Bleeding score: 14, VWF:Ag (IU dL−1): 1, VWF:CB (IU dL−1): 1, FVIII:C (IU dL−1): 2, VWF:RCo below detection limit (<10 IU dL−1), not detectable VWF on multimer gels, anaphylactic reaction to the VWF concentrate, inhibitor and alloantibodies detected
CaseNOTHPOs: n/a
CaseNOTHPOFreeText: did not become refractory to factor replacement therapy
CasePreviousTesting: n/a
Gene: VWF
Variant:
c.3622delT (p.S1208QfsX7), Exon 27, Homozygous
Intron 40 VNTR 18/18
Note: multimer electrophoresis, Recombinant VWF antigen concentrations and Collagen binding activity (VWF:CB) measured by ELISA, direct sequencing of the 51 exons and the exon‐intron boundaries, Breakpoint analysis and breakpoint‐specific PCR
203< 1< 16−14Mc.103T>C/c.4975C>Tp.C35R/p.R1659X3/2814/16N/PD
Case: Patient 20, M, Hungarian
DiseaseAssertion: VWD type 3
FamilyInfo: compatible with recessive inheritance
ParentalGenotype(s): n/a
CasePresentingHPOs: n/a
CaseHPOFreeRext: Bleeding score: 14, VWF:Ag (IU dL−1): < 1, VWF:CB (IU dL−1): < 1, FVIII:C (IU dL−1): 6, VWF:RCo below detection limit (<10 IU dL−1), not detectable VWF on multimer gels
CaseNOTHPOs: n/a
CaseNOTHPOFreeText: did not become refractory to factor replacement therapy
CasePreviousTesting: n/a
Gene: VWF
Variant:
c.103T>C (p.Cys35Arg), Exon 3
c.4975C>T (p.Arg1659X), Exon 28
Intron 40 VNTR 14/16
Note: multimer electrophoresis, Recombinant VWF antigen concentrations and Collagen binding activity (VWF:CB) measured by ELISA, direct sequencing of the 51 exons and the exon‐intron boundaries, Breakpoint analysis and breakpoint‐specific PCR
Laboratory monitoring of replacement therapy for major surgery in von Willebrand disease
PMID: 28111840
Gene: VWF
HGNCID: 12726
p.(Val510 = ) variant
PMID: 33134807
Gene: VWF
HGNCID:12726
Case: Female patient from the French Caribbean island of Martinique
DiseaseAssertion: VWF Type 3
FamilyInfo: The proband had a combination of two variants p.(Val510+) and p.(Pro21452145Thrfs*5) in a heterozygous state. Her biological profile indicated VWD3: VWF:Ag = 1 to 5%, VWF:RCo = 5%, FVIII:C = 2 to 3%, VWFpp = 6%, and a total absence of multimers assessed by electrophoresis. She was usually treated with plasma-derived VWF concentrates. Interestingly, the VWFpp level in this patient was higher than expected for typical VWD3. The sister who died from a nonhemorrhagic cause had the same clinical-biological profile.
ParentalGenotype(s): The mother had a normal biological assessment and was asymptomatic without any bleeding. Sequencing of the mother's VWF gene revealed a single variant on exon 37: resulting in the nucleotide change c.6432dup / a.a. change p.(Pro2145THRfs*5) which results in a stop codon. This molecular abnormality favors VWD3, even though the mother is asymptomatic. The father experienced excessive bleeding only as a result of trauma or surgery. Sequencing of the father's VWF gene led to the identification of one potential causative variant: p.(Val510 = ), on exon 13 with a nucleotide change c.1530G>A. A second sister of the proband has a clinical and biological phenotype similar to that of her father.
CasePresentingHPOs:HP:0012147, HP:0030132, HP:0030129
CaseHPOFreeText: The proband presented with severe hemorrhagic manifestations.
CaseSubsequentTesting:N/A
GenotypingMethod:NGS
PreviouslyPublished: No
SupplementalData: The prediction softwares used (SpliceSiteFinder-like, MaxEntScan, GeneSplicer, NSPLICE, ESEFinder, RESCUE-ESE, and EX-SKIP) regarding c.1530G > A (p.(Val510 = )) interpreted the appearance of a donor site at 6 base pairs at the end of exon 13 which could potentially alter splicing. This synonymous mutation could therefore have an effect on VWF messenger ribonucleic acid processing, causing a shift in the reading frame and the appearance of a termination codon deletion of two codons. The ACMG predicted that this variant would probably be pathogenic.
VariantEvidence: An additional 21 patients from Martinique were identified with the p.(Val510=) variant. Median age was 63 years (interquartile range [IQR], 45–77) and 65% were female. The striking feature in these patients was a significantly increased VWFpp/VWF:Ag ratio with a median of 5.62 (IQR, 4.36–6,14). This ratio could be calculated only for the 14 patients for whom the VWFpp level was measured. An increased VWFpp/VWF:Ag ratio (> 2.2) is indicative of an accelerated clearance of VWF. Addition testing in four patients involved DDAVP infusion compared to a patient with a VWD1 mutation that does not cause a clearance defect. The results showed accelerated VWF clearance compared to the control. The author propose to classify patient with the p.(Val510=) variant as Type 1C, a rare subtype that removes VWF more quickly than normal in the blood.
Compound Heterozygote:
GeneName:VWF
Variant: NM_00055.2.5:c.6432dup. (Pro2145Thrfs*5)
ClinVarID1330387
gnomAD:N/A
GeneName: VWF
Variant:NM_000552.3:c.1530G>A, p.(Val510=)
CAIDCA6403368
gnomAD: 0.000001240
An Arg545----Cys545 substitution mutation of the von Willebrand factor in type IIB von Willebrand's disease
PMID: 1761120
Gene: VWF
HGNC: 12726
Disease: von Willebrand disease type 2B
MONDO: 0015629
InheritancePattern: Autosomal Dominant
Prevalence: Overall VWD prevalence is estimated to be as high as 1 in 100 in the general population, with 1 in 10,000 pursuing tertiary care referral ((PMID: 28847738).
Penetrance: Fully penetrant / nearly fully penetrant for most pathogenic type 2 variants
von Willebrand Disease: A Concise Review and Update for the Practicing Physician
PMID: 27920237
Gene: VWF
HGNCID: 12726
In family 3, the female proposita (3G)
Case#: 3G
DiseaseAssertion:
FamilyInfo: Her father (3F), who reported mild bruising symptoms, and both asymptomatic younger male siblings (3H and 3J) were also investigated. All family members were found to be heterozygous for a previously described mutation in exon 30:c.5191 T → A, resulting in Ser1731Thr.
CaseHPOFreeText4: In family 3, the female proposita (3G) presented in childhood with epistaxis and easy bruising. VWF:Ag and VWF:RCo were borderline low in 3F and 3G but normal in the asymptomatic brothers, 3H and 3J. Multimer analysis was normal in all family members tested (Figure 1). VWF:CB binding to type I collagen was reduced in all family members (CB/Ag ratio 0.4-0.7), whereas only one (3G) showed a reduction in CB:Ag ratio with type III collagen.
CasePreviousTesting: Fifty-one primer sets were used to amplify the essential regions of VWF (52 exons, flanking intronic regions, 5′ promoter region, and the 3′ untranslated region).
Gene: VWF
Variant: heterozygous for a previously described mutation in exon 30:c.5191 T → A, resulting in Ser1731Thr
HGVS: NM_000552.5(VWF):c.5191T>A (p.Ser1731Thr)
ClinVar: 100420
CAID: CA228704
gnomAD: 0.004289 in middle eastern pop
The proposita (2D) in family 2
Case#: 2D
DiseaseAssertion:
FamilyInfo: Her son 2E had mild bruising and epistaxis.
CaseHPOFreeText: The proposita (2D) in family 2 was investigated after a postpartum hemorrhage requiring blood transfusion. She gave a longstanding history of menorrhagia, and her calculated bleeding score was 10, the highest of all the persons in this study. VWF:Ag, VWF:RCo, and multimer analysis were all normal. VWF:CB was significantly reduced with both types I and III collagen, resulting in CB:Ag ratios of 0.2 to 0.4. Closure times in the PFA-100 were normal in 2D with both cassettes (Coll/Epi, 111 seconds; Coll/ADP, 98 seconds). The discrepant reduction in VWF:CB persisted after DDAVP administration to 2D despite normalization of both VWF:Ag and VWF:CB (samples taken 90 minutes after DDAVP administration showed VWF:Ag 191 IU/dL, VWF:CB 67 IU/dL, CB:Ag ratio = 0.35).
CasePreviousTesting: Fifty-one primer sets were used to amplify the essential regions of VWF (52 exons, flanking intronic regions, 5′ promoter region, and the 3′ untranslated region).
Gene: VWF
Variant: Her and son were shown to be heterozygous for a novel mutation in exon 31:c.5347 T → G resulting in Ser1783Ala
HGVS: NM_000552.5(VWF):c.5347T>G (p.Ser1783Ala)
ClinVar: 31012
CAID: CA228715
gnomAD: 0.0006918 in south asian pop
V‐136
Case#: Elayaperumal_2018_ , M, 4 y.o. (onset), origin in India
DiseaseAssertion: VWD type 3
FamilyInfo: Consanguinity, no family history
ParentalGenotype: not reported
CasePresentingHPOs:
CaseHPOFreeText: bleeding score of 14. VWF:Ag 0.83, FVlll:C of 1.9%.
CaseNotHPOs:
CaseNotHPOFreeText:
CasePreviousTesting: not reported
GenotypingMethod: CSGE and Sanger sequencing of VWF gene only.
Gene: VWF
Variant: homozygous c.757_770del
HGVS: NM_000552.3:c.757_770del (p.Thr253Cysfs*45)
ClinVarID: not found
CAID: CAR unable to parse. Error: unknown
gnomAD: not found
MultipleGeneVariants: not reported
V‐144
Case#: Elayaperumal_2018_V-144, M, 1 y.o. (onset), origin in India
DiseaseAssertion: VWD type 3
FamilyInfo: consanguinity, family history of bleeding
ParentalGenotype: not reported
CasePresentingHPOs:
CaseHPOFreeText: bleeding score of 7, VWF:Ag of 0, FVIII:C of 5.9%
CaseNotHPOs:
CaseNotHPOFreeText:
CasePreviousTesting: not reported
GenotypingMethod: CSGE and Sanger sequencing of VWF gene only.
Gene: VWF
Variant: homozygous c.1117C>T (p.Arg373*)
HGVS: NM_000552.3:c.1117C>T
ClinVarID: 100175
CAID: CA228261
gnomAD: MAF of 0.0001309 (4/30550 alleles, South Asian population) https://gnomad.broadinstitute.org/variant/12-6180502-G-A
MultipleGeneVariants:
Note: previously reported in LOVD
Proband: F4_AM, 27yo (at report) female
Phenotypes: HP:0030134, HP:0003010, HP:0030129
Family: Both parents carry the variant. All het carriers were classified type 1
Labs: FVIII 0.02 IU/mL, VWF 0.03 IU/mL (below detection threshold)
Variant: NM_000552.5:c.4975C>T
CAID: CA114141
Cohort description
Case#: MK0251
DiseaseAssertion: Type 2 VWD
CaseHPOFreeText: 51 year old, female, VWF:AG LEVELS = 60
Gene: VWF
Variant: compound heterozygous for 4751A>G (p.Y1584C) and c.7483del (p.Leu2495CysfsTer8) variants
ClinVar: 310 (p.Y1584C) and 631687 (p.Leu2495CysfsTer8)
gnomAD: absent grpmax (p.Leu2495CysfsTer8), grpmax of 0.004019 based on european non finnish pop (p.Y1584C)
The Defective Interaction Between von Willebrand Factor and Factor VIII in a Patient With Type 1 von Willebrand Disease Is Caused by Substitution of Arg19 and His54 in Mature von Willebrand Factor
PMID: 8562925
Gene: VWF
HGNC: 12726
Disease: von Willebrand Disease Type 2N
MONDO: 0015631
InheritancePattern: Autosomal Recessive
Prevalence: Various sources (PMID: 28847738, PMID:19809303, PMID:29115006) can be combined to estimate the prevalence of VWD Type 2N between 1:15,000 and 1:80,000.
Penetrance: VWD type 2 is fully penetrant / nearly fully penetrant for most pathogenic variants.
8 M/46 <1 7 No 19 c.4576C>Ta/c.6973T>Aa p.Q1526Xa/p.C2325Sa 28/40 Heterozygous
Case: 8, M, 46, Italian
DiseaseAssertion: VWD type 3
FamilyInfo: Consanguinity: no
ParentalGenotype: n/a
CasePresentingHPOs: n/a
CaseHPOFreeText: VWF:Ag (IU/dL): <1, FVIII:C (IU/dL): 7, Bleeding Score: 19
CaseNotHPOs: n/a
CaseNotHPOFreeText: Anti-VWF alloantibodies: no
CasePreviousTesting: n/a
Gene: VWF
Variant:
c.4576C>T (p.Gln1526X), Exon 28
c.6973T>A (p.Cys2325Ser), Exon 40, B1 Domain
Compound Heterozygous
9 F/21 <1 3 No 26 c.1–30071_220+3445del/c.3940delGa p.M1_G74delX8/p.V1314SfsX33a 1–3/28 Heterozygous
Case: 9, F, 21, Italian
DiseaseAssertion: VWD type 3
FamilyInfo: Consanguinity: no
ParentalGenotype: n/a
CasePresentingHPOs: n/a
CaseHPOFreeText: VWF:Ag (IU/dL): <1, FVIII:C (IU/dL): 3, Bleeding Score: 26
CaseNotHPOs: n/a
CaseNotHPOFreeText: Anti-VWF alloantibodies: no
CasePreviousTesting: n/a
Gene: VWF
Variant:
c.1–30071_220+3445del (p.Met1_Gly74delX8), Exon 1-3
c.3940delG (p.Val1314SerfsX33), Exon 28
Compound Heterozygous
1
Case: 2M-1
DiseaseAssertion: VWD2M
FamilyInfo:
ParentalGenotype(s):
CasePresentingHPOs: AcuStar RCo/Ag = 0.60; AcuStar CB/Ag = 1.16; ELISA CB/Ag = 1.12
CaseHPOFreeText:
CaseNOTHPOs:
CaseNOTHPOFreeText:
CasePreviousTesting:
GenotypingMethod: not described
PreviouslyPublished:
Gene: VWF
Variant: p.Arg1315Gln
HGVS: n/a
ClinVarID: n/a
CAID: n/a
gnomAD: n/a
1
Case: 2M-2
DiseaseAssertion: VWD2M
FamilyInfo:
ParentalGenotype(s):
CasePresentingHPOs: AcuStar RCo/Ag = 0.01; AcuStar CB/Ag = 1.16; ELISA CB/Ag = 1.41
CaseHPOFreeText:
CaseNOTHPOs:
CaseNOTHPOFreeText:
CasePreviousTesting:
GenotypingMethod: not described
PreviouslyPublished: 1409710
Gene: VWF
Variant: c.3970G>A (p.Gly1324Ser)
HGVS: NM_000552.5(VWF):c.3970G>A (p.Gly1324Ser)
ClinVarID: 300; https://www.ncbi.nlm.nih.gov/clinvar/variation/300/?new_evidence=false
CAID:
gnomAD: MAF = 0.00003267 in South Asian population; https://gnomad.broadinstitute.org/variant/12-6128614-C-T
0.36
Case: 2A-5
DiseaseAssertion: VWD2A
FamilyInfo:
ParentalGenotype(s):
CasePresentingHPOs: AcuStar RCo/Ag = 0.36; AcuStar CB/Ag = 0.15; ELISA CB/Ag = 0.24
CaseHPOFreeText:
CaseNOTHPOs:
CaseNOTHPOFreeText:
CasePreviousTesting:
GenotypingMethod: not described
PreviouslyPublished: PMID: 1537829
Gene: VWF
Variant: c.4789C>T (p.Arg1597Trp)
HGVS: NM_000552.5(VWF):c.4789C>T (p.Arg1597Trp)
ClinVarID: 285; https://www.ncbi.nlm.nih.gov/clinvar/variation/285/?new_evidence=false
CAID:
gnomAD: absent
1
Case: 2B-8
DiseaseAssertion: VWD2B
FamilyInfo:
ParentalGenotype(s):
CasePresentingHPOs: AcuStar RCo/Ag = 0.99; AcuStar CB/Ag = 1.35; ELISA CB/Ag = 1.02
CaseHPOFreeText:
CaseNOTHPOs:
CaseNOTHPOFreeText:
CasePreviousTesting:
GenotypingMethod: not described
PreviouslyPublished: 16985174
Gene: VWF
Variant: c.3797C>T (p.Pro1266Leu)
HGVS: NM_000552.5(VWF):c.3797C>T (p.Pro1266Leu)
ClinVarID: 314; https://www.ncbi.nlm.nih.gov/clinvar/variation/314/?new_evidence=false
CAID:
gnomAD: MAF (European, Finnish) = 0.003667; 1 homozygote; https://gnomad.broadinstitute.org/variant/12-6128787-G-A
1
Case: 2A-7
DiseaseAssertion: VWD2A
FamilyInfo:
ParentalGenotype(s):
CasePresentingHPOs: AcuStar RCo/Ag = 0.27; AcuStar CB/Ag = 0.10; ELISA CB/Ag = 0.39
CaseHPOFreeText:
CaseNOTHPOs:
CaseNOTHPOFreeText:
CasePreviousTesting:
GenotypingMethod: not described
PreviouslyPublished: PMID:1673047
Gene: VWF
Variant: c.4883T>C (p.Ile1628Thr)
HGVS: NM_000552.5(VWF):c.4883T>C (p.Ile1628Thr)
ClinVarID: 284; https://www.ncbi.nlm.nih.gov/clinvar/variation/284/?new_evidence=false
CAID:
gnomAD: absent
0.49
Case: 2A-1
DiseaseAssertion: VWD2A
FamilyInfo:
ParentalGenotype(s):
CasePresentingHPOs: AcuStar RCo/Ag = 0.49; AcuStar CB/Ag = 0.29; ELISA CB/Ag = 0.33
CaseHPOFreeText:
CaseNOTHPOs:
CaseNOTHPOFreeText:
CasePreviousTesting:
GenotypingMethod: not described
PreviouslyPublished: PMID: 8435341
Gene: VWF
Variant: c.4541T>G (p.Phe1514Cys)
HGVS: NM_000552.5(VWF):c.4541T>G (p.Phe1514Cys)
ClinVarID: 304; https://www.ncbi.nlm.nih.gov/clinvar/variation/304/?new_evidence=false
CAID:
gnomAD: absent
Outgrowing the laboratory diagnosis of type 1 von Willebrand disease: A two decade study Mouhamed Yazan Abou-Ismail, Corresponding Author Mouhamed Yazan Abou-Ismail yazan.abouismail@case.edu orcid.org/0000-0002-6682-4366 Department of Medicine, Rochester General Hospital, Rochester, New YorkCorrespondence M. Yazan Abou-Ismail, University Hospitals, Cleveland Medical Center, Division of Hematology & Oncology, 11100 Euclid Avenue, Cleveland, OH 44106, USA. Email: yazan.abouismail@case.eduSearch for more papers by this authorGbolahan O. Ogunbayo, Gbolahan O. Ogunbayo orcid.org/0000-0002-4140-8067 Department of Medicine, Rochester General Hospital, Rochester, New YorkSearch for more papers by this authorMichelle Secic, Michelle Secic Secic Statistical Consulting Inc, Chardon, OhioSearch for more papers by this authorPeter A. Kouides, Peter A. Kouides orcid.org/0000-0002-3857-8313 Department of Medicine, Rochester General Hospital, Rochester, New York Mary M. Gooley Hemophila Center, Rochester, New YorkSearch for more papers by this author
PMID: 29098718
Gene: VWF
HGNC: 12726 (type 1)
Note: This article is about how VWF levels change as VWD patients age.
homozygous small deletion in exon 45 (p.Gln2551AlafsX16)
Case: IP-2
DiseaseAssertion: VWD3
FamilyInfo: The mother reported no history of bleeding episodes and the laboratory data were in the border line of the normal range.
ParentalGenotype(s): mother is heterozygous for the p.Gln2551AlafsX16 in the VWF gene
CasePresentingHPOs: HP:0000421
CaseHPOFreeRext: VWF:Ag <6%, VWF:RCo <6% and FVIII:C 2%. Clinically, repetitive severe epistaxis and subcutaneous hematomas were observed.
CaseNOTHPOs:
CaseNOTHPOFreeText:
CasePreviousTesting: Direct sequencing of exons 2–52 including exon/intron boundaries of the VWF gene
GenotypingMethod: multiple ligation‐dependent probe amplification (MLPA; using kit P011 and P012; MRC Holland, Amsterdam, the Netherlands) according to the manufacturer’s instructions. The PCR products were run on an ABI PRISM 3130XL sequencer with the GeneScan 500 LIZ size standard and analyzed using GeneMapper Software 5.0 (Applied Biosystems, Darmstadt, Germany).
PreviouslyPublished: NA
Gene: VWF
Variant: p.Gln2551AlafsX16
HGVS:
ClinVarID:
CAID:
gnomAD:
MultipleGeneVariants:
GeneName: VWF
Variant: whole gene deletion
ClinVarID or CAID:
gnomAD:
Quantitative 3D microscopy highlights altered von Willebrand factor α‐granule storage in patients with von Willebrand disease with distinct pathogenic mechanisms
PMID: 34532631
Notes: Homozygous instance of an otherwise type 2 variant, Cys1190Arg
2
Case#: 2, female, 25yo
DiseaseAssertion: VWD1
FamilyInfo: N/A
ParentalGenotype: N/A
CasePresentingHPOs: HP:0000978, HP:0000421, HP:0000132, HP:0011891, HP:0004846, HP:0012147 (bruising susceptibility, epistaxis, Menorrhagia, Post-partum hemorrhage, Reduced quantity of VWF, Impaired ristocetin cofactor assay activity)
CaseHPOFreeText: Type A blood, VWF:Ag (0·55–2 iu/ml) pre = 0·48, VWF:RCo (0·55–2 iu/ml) pre = 0·53, FVIII:C (0·55–2 iu/ml) pre = 0·25, FVIII:C/VWF:Ag ratio = 0·52, VWF:FVIII binding (>20%) = N/A, VWF:FVIII binding/VWF:Ag (>0·7) = N/A, multiple surgical interventions with VWF concentrate with adequate haemostasis
CaseNotHPOs: N/A
CaseNotHPOFreeText: N/A
ProteinExpression: N/A
CasePreviousTesting: RFLP; confirmatory sequencing
Gene: VWF
Variant 1: NM_000552.4(VWF):c.2561G>A (p.Arg854Gln)
ClinVar: 296; https://www.ncbi.nlm.nih.gov/clinvar/variation/296/
gnomAD: MAF = 0.005692 (European Non-Finnish); https://gnomad.broadinstitute.org/variant/12-6143978-C-T
Variant 2: N/A - stated to be a compound heterozygote for a 2N VWD and a presumed null mutation
1
Case#: 1, female, 44yo
DiseaseAssertion: VWD1
FamilyInfo: N/A
ParentalGenotype: N/A
CasePresentingHPOs: HP:0007420, HP:0000132, HP:0004846, HP:0012147, HP:0030129, HP:0030130 (spontaneous hematomas, Menorrhagia, Reduced quantity of VWF, Impaired ristocetin cofactor assay activity, Impaired von Willebrand factor collagen binding activity)
CaseHPOFreeText: Type O blood, VWF:Ag (0·55–2 iu/ml) pre = 0·47, VWF:RCo (0·55–2 iu/ml) pre = 0·5, FVIII:C (0·55–2 iu/ml) pre = 0·16, FVIII:C/VWF:Ag ratio = 0·32, VWF:FVIII binding (>20%) = 7%, VWF:FVIII binding/VWF:Ag (>0·7) = 0·15, patient died after motor vehicle accident
CaseNotHPOs: N/A
CaseNotHPOFreeText: N/A
ProteinExpression: N/A
CasePreviousTesting: RFLP; confirmatory sequencing
Gene: VWF
Variant 1: NM_000552.4(VWF):c.2561G>A (p.Arg854Gln)
ClinVar: 296; https://www.ncbi.nlm.nih.gov/clinvar/variation/296/
gnomAD: MAF = 0.005692 (European Non-Finnish); https://gnomad.broadinstitute.org/variant/12-6143978-C-T
Variant 2: N/A - stated to be a compound heterozygote for a 2N VWD and a presumed null mutation
A COVID Constellation: A Case of Transverse Myelitis and Acquired von Willebrand Syndrome
PMID: 35927967 Gene: VWF HGNCID: 12726
Von Willebrand Disease type 2 in pregnancy - A critical clinical association
PMID: 28559097
Gene: VWF
HGNCID: 12726
The D' domain of von Willebrand factor requires the presence of the D3 domain for optimal factor VIII binding
PMID: 30111575
p.P1162L
Case#: p.P1162L, Female, Age 52, African American
Disease Assertion: Normal Variant
Family Info: Two family members tested with normal clinical phenotype
Parental Genotype: Not listed
CasePresentingHPOs:
CaseHPOFreeText: VWF:RCo/VWF:Ag Ratio 0.50, VWF:GPIbM 98
CaseNotHPOs: HP:0040240
(Increased Ratio of VWF Propeptide to VWF antigen)
CaseNotHPOFreeText:bleeding score 2, VWF:Ag 144 IU/dL, VWF:RCo 72 IU/dL, normal multimer distribution
ProteinExpression:
CasePreviousTesting: VWF Sequencing
Gene:VWF
Variant: NM_000552.4(VWF):c.3485C>T (p.Pro1162Leu)
ClinVar: 256669 ClinVarID
CAID: CA6402756
gnomAD: MAF of 0.2207 (2023/9166 alleles) in the African American population.
p.I1453N
Case#: p.I1453N, Male, Age 25, Caucasian
Disease Assertion: VWD2M
FamilyInfo: No affected family members enrolled in study
Parental Genotype: Not listed
CasePresentingHPOs: N/A
CaseHPOFreeText: bleeding score 11, VWF:RCo/VWF:Ag ratio 0.55, VWF:Ag 20 IU/dL, VWF:RCo 11 IU/dL,
CaseNotHPOs:HP:0040240
(Increased Ratio of VWF Propeptide to VWF antigen)
CaseNotHPOFreeText: Normal multimer distribution
Protein Expression: N/A
CasePreviousTesting: VWF sequencing
Gene: VWF
Variant: NM_000552.4:c.4358T>A (p.Ile1453Asn)
ClinVar: N/A
CAID: CA383502477
gnomAD: N/A
p.D1283Y
Case#: p.D1283Y, Female, Age 85, Caucasian
Disease Assertion: VWD2M
FamilyInfo: Single affected family member with similar bleeding score
Parental Genotype: Not listed
CasePresentingHPOs:
CaseHPOFreeText: VWF:RCo/ VWF:Ag ratio 0.34, bleeding score 12, VWF:RCo 12 IU/dL, VWF:Ag 25 IU/dL
CaseNotHPOs: HP:0040240
(Increased Ratio of VWF Propeptide to VWF antigen)
CaseNotHPOFreeText: Normal multimer distribution
Protein Expression: N/A
CasePreviousTesting: VWF Sequencing
Gene: VWF
Variant: NM_000552.4:c.3847G>T (p.Asp1283Tyr)
ClinVar: N/A
CAID: CA383506819
gnomAD: N/A
The dominant p.Thr274Pro mutation in the von Willebrand factor propeptide causes the von Willebrand disease type 1 phenotype in two unrelated patients
PMID: 35064738
Gene: VWF
HGNCID: 12726
Identification of type 2 von Willebrand disease in previously diagnosed type 1 patients: a reappraisal using phenotypes, genotypes and molecular modelling
PMID: 11154147
Notes: Tyr1321Asp reported as Tyr558Asp and c.4211T>G
CAID: CA383506021
A 30-year-old male patient
Case: Patient from family B, a 30-year-old male consanguineous Chinese patient
DiseaseAssertion: Type 3 von Willebrand disease
FamilyInfo: Patient's parents were cousins, both heterozygous carriers, who had also had a son and two daughters, of which one daughter died at 1 year old due to unspecified bleeding disorder
ParentalGenotype(s): Heterozygous carriers, no details given as far as specific genotypes
CasePresentingHPOs:
CaseHPOFreeRext: "hematoma in the lower extremity," "The VWF:Ag, VWF:RCo, and FVIII:C were decreased to be 0.5%, 0.1%, and 1.2%, respectively," and APTT was prolonged (PT: 13.6 s, APTT: 72.0 s, TT: 14.9 s)
CaseNOTHPOs: N/A
CaseNOTHPOFreeText: PT and TT were within normal range
CasePreviousTesting: N/A
GenotypingMethod: NGS was performed targeting all exons and intronic flanking regions of the F8 (OMIM: * 300841, NM_000132.3), F9 (OMIM: * 300746, NM_000133.3), and VWF (OMIM: * 613160, NM_000552.4) genes; Some exons of VWF gene could not be discriminated from its highly homologous pseudogene, and these exons were sequenced by Sanger sequencing
Gene: VWF
Variant: Homozygous VWF c.6450C>A (p.Cys2150Ter) nonsense mutation
HGVS: NM_000552.5:c.6450C>A
ClinVarID: NR
CAID: CA383491381
gnomAD: NR
Two cases of von Willebrand disease type 3 in consanguineousChinese families
PMID: 31793247
Gene: VMF
HGNCID: HGNC:12726
Two vitellogenins in the loliginid squid Uroteuthis edulis: Identification and specific expression in ovarian follicles
PMID: 28218427
Gene: VWF
HGNCID: 12726
Type 2M Von Willebrand Disease: A Case Report
Case: 24-year-old Caucasian woman with a rare variety of type 2M VWD
DiseaseAssertion: 2M VWD
FamilyInfo: family history was negative for easy bruisability, bleeding, or clotting disorder but maternal grandmother had lung cancer.
CaseNOTHPOFreeText: Von Willebrand factor antigen 45% on 9/12/17 and 37% on 9/19/17 with the ratio of VWF activity to the antigen is less than 0.7
ParentalGenotype(s):Unknown
CasePresentingHPOs: HP:0003010 (Prolonged bleeding time), HP:0000978 (Bruising susceptibility).
**CaseHPOFreeText: ** loss of weight over the last six months, The complete blood count, comprehensive metabolic panel, factor VIII, prothrombin time and partial thromboplastin time, D-Dimer, and antithrombin activity were normal. Her von Willebrand factor activity was much lower compared to the antigen.
CasePreviousTesting: None
GenotypingMethod: Patient have not been genotyped
PreviouslyPublished: N/A
Variant: N/A
ClinVarID: N/A
gnomAD: N/A
**Gene: ** VWF Inheritance mode autosomal dominant variety with normal, high molecular weight multimers
Limitations of the Ristocetin Cofactor Assay in Measurement of VWF Function
PMID: 19694940
Gene: VWF
HGNC: 12726
Case#: Elayaperumal_2018_V-283, M, 3 y.o. (onset), origin in India
DiseaseAssertion: VWD type 3
FamilyInfo: no consanguinity, no family history
ParentalGenotype: not reported
CasePresentingHPOs:
CaseHPOFreeText: bleeding score of 12, VWF:Ag of 0, FVIII:C 4.3%
CaseNotHPOs:
CaseNotHPOFreeText:
CasePreviousTesting: not reported
GenotypingMethod: CSGE and Sanger sequencing of VWF gene only.
Gene: VWF
Variant: homozygous c.6321G>A (p.Trp2107*)
HGVS: NM_000552.3:c.6321G>A
ClinVarID: not reported
CAID: CA383491677
gnomAD: not reported
MultipleGeneVariants: not reported
Supplementary Material
Case: Row 11 in Supplemental Table 1. Data represents 2 patients from 2 families.
DiseaseAssertion: type 1 VWD
FamilyInfo:
ParentalGenotype(s):
CasePresentingHPOs:
CaseHPOFreeRext: FVIII:C/VWF:Ag = 1.0; VWFpp/VWF:Ag = 2.0
CaseNOTHPOs:
CaseNOTHPOFreeText:
CasePreviousTesting:
GenotypingMethod: Genetic analysis was performed at the laboratory of hematology of the Radboud University Medical Center in Nijmegen. Ion semiconductor sequencing (Ion-Torrent) was used to analyze the VWF gene from peripheral blood obtained in EDTA tubes or from saliva samples. The 52 exons of VWF gene were analyzed including ±20 bp exon-intron boundaries. If no VWF gene variant was detected, multiplex ligation-dependent probe amplification (MLPA) analysis was performed to find large deletions or duplications. Thus, MLPA was performed in 183 patients (46.9%). All variants were confirmed with Sanger sequencing.
PreviouslyPublished:
Gene: VWF
Variant: 1625C>G A542G
HGVS: VWF:c.1625C>G (p.Ala542Gly)
ClinVarID: 381621
CAID:
gnomAD: 0.001062 (1714 in 1613708) 2 homozygotes https://gnomad.broadinstitute.org/variant/12-6057953-G-C?dataset=gnomad_r4
MultipleGeneVariants:
Gene: VWF
Variant: c.8366C>T p.Thr2789Ile (only present in 1 of the 2 patients)
CAID: CA6401321
gnomAD: absent
Current and Emerging Options for the Management of Inherited von Willebrand Disease
PMID: 28791655
Gene: VWF
HGNCID: 12726
Controversies in the diagnosis of Type 1 von Willebrand disease
PMID: 28447419
Gene: VWF
HGNCID: 12726
Type 2B von Willebrand Disease: An Unusual Cause of Severe Neonatal Thrombocytopenia
PMID: 28060120
Gene: VWF
HGNCID: 12726
A novel mutation Gly 1672-->Arg in type 2A and a homozygous mutation in type 2B von Willebrand disease
PMID: 8865541
Gene: VWF
HGNC: 12726
Disease: von Willebrand disease type 2B
MONDO: 0015629
InheritancePattern: Autosomal Dominant
Prevalence: Overall VWD prevalence is estimated to be as high as 1 in 100 in the general population, with 1 in 10,000 pursuing tertiary care referral ((PMID: 28847738).
Penetrance: Fully penetrant / nearly fully penetrant for most pathogenic type 2 variants
a 5-year-old boy was diagnosed with mild hemophilia A
Case#: Male, 31<br /> DiseaseAssertion: VWD 2N<br /> FamilyInfo: A younger brother with mild HA, sister with normal VWF levels, no other famile members with bleeding disorders<br /> ParentalGenotype: <br /> CasePresentingHPOs: HP:0000421 (epistaxis), HP:0007420 (spontaneous hematoma)<br /> CaseHPOFreeText: Soft tissue bleeding, VWF:Ag 80%, VWF:RCo 60%, normal VWF multimer pattern<br /> CaseNotHPOs:<br /> CaseNotHPOFreeText: <br /> CasePreviousTesting: Genotyping using Next Gen screening, by Sanger sequence screening of all 26 exons of F8 gene, by a multiplex ligation-dependent probe affinity assay, and by a VWF:FVIII binding assay<br /> Gene: VWF<br /> Variant: c2390T>G in exon 18<br /> ClinVar:<br /> CAID: gnomAD:
1 CASE PRESENTATION
Case#: 32 year old female
DiseaseAssertion: VWD Type 2M
CaseHPOFreeText4: Testing was repeated multiple times, with initial results being untrustworthy. Follow up testing is as follows: VWF:RCo/VWF:Ag ratio = 0.61, VWF:CB = 10. Normal multimers
CasePreviousTesting: Molecular analysis by next generation gene sequencing analysis of VWF, F8, GPIBA and GPIBB.
Gene: VWF
Variant: variant in VWF at exon 31 (c.5347 T > G) that leads to a VWF protein change of p.Ser1783Ala
HGVS: NM_000552.5(VWF):c.5347T>G (p.Ser1783Ala)
ClinVar: 31012
CAID: CA228715
gnomAD: 0.0006918 in South Asian pop
273568T>CC1190R0.410.240.590.140.340.568——1130
Variant: CA228423
Notes: likely type 2A variant in het, with patient and recombinant multimers. However, they show supranormal multimers and an asserted loss of triplet structure
Protein S gene mutation c.946C > T (p.R316C) contributed to ischemic stroke in a man with von Willebrand disease type 3 caused by two novel VWF gene mutations, c.2328delT (p.A778Lfs* 23) and c.6521G > T (p.C2174F)
PMID: 36034607
Gene: VWF
HGNCID: 12726
The 26-year-old female IP is diagnosed to have type 3 VWD, due to no detectable VWF in plasma (VWF antigen (VWF:Ag) level < 4%).
Case: Index Patient (IP), Female, 26 years old; described as from a genetically isolated population (not further specified), consistent with elevated homozygosity rates in that population. DiseaseAssertion: Type 3 VWD, confirmed by VWF:Ag <4 IU/dL (virtual absence of VWF). FamilyInfo: NA — no relatives' bleeding history or genotype reported ParentalGenotype(s): NA (not tested/not reported) CasePresentingHPOs: HP:0000421 (Epistaxis — frequent nosebleeds), HP:0000132 (Menorrhagia — heavy, prolonged, led to iron-deficiency anemia), HP:0001934 (Persistent bleeding after trauma — bleeding following injury), HP:0012147 (Reduced quantity of VWF; VWF:Ag <4 IU/dL), HP:0030129 (Impaired VWF:RCo-type activity; VWF:GPIbM <4 IU/dL) CaseHPOFreeText: Easy bruising (no matching HPO code in the approved list); FVIII:C 2.0 IU/dL (nv 70–157); referred to Hemophilia Centre at age 1 for bleeding complications; declined recommended lifelong prophylaxis due to injection discomfort, later underwent prophylaxis with plasma-derived VWF/FVIII concentrates and on-demand treatment (tranexamic acid, oral contraceptives, replacement therapy). Supporting functional evidence from patient-derived endothelial colony-forming cells (ECFCs): virtual absence of VWF mRNA (RQ ~0.04–0.05 vs. 1.00 in healthy controls, across 4 primer/probe sets); VWF secretion into ECFC medium 6.2% ± 0.4% of healthy controls (p<0.0001); near-total absence of Weibel-Palade bodies on immunofluorescence (only 1–3 small WPBs seen in some cells vs. normal stick-shaped WPBs in controls); altered intracellular trafficking of angiopoietin-2 (WPB inflammatory cargo) in the absence of WPBs. CaseNOTHPOs: NA CaseNOTHPOFreeText: NA CasePreviousTesting: Routine testing (Sanger sequencing of coding exons, ~50 bp flanking intronic regions, promoter, 5'/3'-UTR, plus MLPA) was negative — patient was "mutation-negative" prior to this study. Not genome-wide; targeted to VWF only, but comprehensive: this study's NGS covered the entire 176 kb VWF locus (all 52 exons, full intronic regions, promoter) at 30x coverage, going well beyond standard exon+flanking-intron approaches specifically to find deep intronic variants. GenotypingMethod: Illumina NovaSeq 6000 NGS (2×150 bp reads) of the whole VWF genomic region; variant annotation via Ensembl VEP with SpliceAI, PolyPhen-2, SIFT; splice effect independently confirmed with Neural Network Splicing, ASSP, and MaxEnt/HSF prediction tools. Functional validation via patient-derived ECFCs: RT-qPCR of VWF mRNA (4 primer/probe sets), cDNA sequencing, VWF:Ag ELISA of ECFC secretion, immunofluorescence microscopy, and whole-transcriptome RNA-seq. PreviouslyPublished: NA — no indication this patient was reported elsewhere; paper explicitly frames this variant/mechanism as a first report. Gene: VWF Variant: Novel homozygous deep intronic variant, intron 8, creating a new donor splice site that outcompetes the native donor site, causing inclusion of a 118-bp pseudoexon, frameshift, premature stop codon, and nonsense-mediated decay of the transcript. HGVS: NM_000552.5:c.997+118T>G (confirmed via ClinGen Allele Registry Community Standard Title; not explicitly stated in the paper's main text, which only gives cDNA/genomic coordinates without a transcript version). Genomic: g.6073501A>C (GRCh38/hg38; note the T>G/A>C discrepancy reflects VWF being transcribed from the minus strand of chr12). ClinVarID: NA CAID: CA3275979827 gnomAD: NA
A Homozygous Deep Intronic Variant Causes Von Willebrand Factor Deficiency and Lack of Endothelial-Specific Secretory Organelles, Weibel–Palade Bodies
PMID: 35328514 Gene: VWF HGNCID: HGNC:12726
Von Willebrand's disease: case report and review of literature
PMID: 28904675
Gene: VWF
HGNCID: 12726
Val1316Met
Gene:VWF
HGNCID:12726
Case:Preterm female newborn delivered by C/S
DiseaseAssertion:VWD Type 2B
FamilyInfo:Fig. 1 Father with VWD 2B and two paternal half-brothers diagnosed with hematomas after birth
ParentalGenotype(s):heterozygous carrier p.(Val1316Met) confirmed in the father, half-brothers were not tested
CasePresentingHPOs: HP:0001873, HP:0012147
CaseHPOFreeRext:Multiple hematomas, no cerebral hemorrhage
CaseNOTHPOs:HP:0030130
CaseNOTHPOFreeText:analyses showed reduced VWF activity levels (40% at postnatal day 7), whereas VWF antigen was normal (146% at postnatal day 7)
CasePreviousTesting:No . Gene:VWF
Variant:p.Val1316Met
HGVS:NM_000552.4:c.3946G>A
ClinVarID:290
CAID:CA114127
gnomAD:6.20e-7
Combined effects of two mutations in von Willebrand disease 2M phenotype
PMID: 30046717
Gene: von Willebrand Factor (VWF)
rs2676073266132007c.3437A > G26p.Y1146C1042A
Case: n.a.
DiseaseAssertion: VWD 2A
FamilyInfo: n.a.
ParentalGenotype(s):n.a.
CasePresentingHPOs:n.a.
CaseHPOFreeRext:n.a.
CaseNOTHPOs:n.a.
CaseNOTHPOFreeText:n.a.
CasePreviousTesting:n.a.
GenotypingMethod:n.a.
PreviouslyPublished: If applicable.n.a.
Gene:VWF
Variant:NM_000552.5(VWF):c.3437A>G (p.Tyr1146Cys)
HGVS:NM_000552.5:c.3437A>G
ClinVarID:31009
CAID:n.a.
gnomAD:n.a.
A case of autoimmune severe acquired von Willebrand syndrome (type 3-like)
PMID: 28512017
Gene: VWF
HGNCID: 12726
Molecular basis of von Willebrand disease type IIB. Candidate mutations cluster in one disulfide loop between proposed platelet glycoprotein Ib binding sequences.
PMID: 2010538
Gene: VWF
HGNC: 12726
Disease: von Willebrand disease type 2B
MONDO: 0015629
InheritancePattern: Autosomal Dominant
Prevalence: Overall VWD prevalence is estimated to be as high as 1 in 100 in the general population, with 1 in 10,000 pursuing tertiary care referral ((PMID: 28847738).
Penetrance: Fully penetrant / nearly fully penetrant for most pathogenic type 2 variants