Von Willebrand disease mutation spectrum and associated mutation mechanisms
PMID: 28987708
Gene: VWF
HGNCID: 12726
Von Willebrand disease mutation spectrum and associated mutation mechanisms
PMID: 28987708
Gene: VWF
HGNCID: 12726
P7
Case: P7, M/41
DiseaseAssertion: VWD2A
FamilyInfo: Positive family history, no details provided.
ParentalGenotype: NA
CaseHPOFreeText: The bleeding score was 7, aPTT was 36 seconds, FVIII:C was 36%, VWF:RCo was not determined, and VWF:Ag was 25 IU/dL. The VWF:RCo/VWF:Ag ratio was not applicable. The VWF multimer pattern showed a mild loss of high molecular weight multimers, RIPA was 4 ohms, and the platelet count was 301 × 10⁹/L.
CasePreviousTesting: NA
GenotypingMethod: Direct sequencing of all exons, flanking intronic sequences, and the promoter of VWF was performed.
Gene: VWF
Variant: c.4789C>T, p.R1597W — heterozygous
HGVS: NM_000552.5(VWF):c.4789C>T (p.Arg1597Trp)
ClinVar: 285
CAID: CA114117
gnomAD: https://gnomad.broadinstitute.org/variant/chr12-6018629-G-A?dataset=gnomad_r4
P1
Case: P1, M/5
DiseaseAssertion: VWD1
FamilyInfo: No
ParentalGenotype: NA
CaseHPOFreeText: The bleeding score was 0, aPTT was 41 seconds, FVIII:C was 60%, VWF:RCo was 22 IU/dL, and VWF:Ag was 27 IU/dL, resulting in a VWF:RCo/VWF:Ag ratio of 0.8. RIPA was nearly absent, VWF multimer analysis was not tested, 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: c.6579G>C, p.W2193C — heterozygous
HGVS: NM_000552.5(VWF):c.6579G>C (p.Trp2193Cys)
ClinVar:
CAID: CA383490665
gnomAD: absent from gnomad v4.1.0
P22
Case: P22, F/5
DiseaseAssertion: VWD2A
FamilyInfo: Positive family history, no details provided.
ParentalGenotype: NA
CaseHPOFreeText: The bleeding score was 3, aPTT was 43 seconds, FVIII:C was 47%, VWF:RCo was 122 IU/dL, and VWF:Ag was 20 IU/dL, with a VWF:RCo/VWF:Ag ratio of 0.1. RIPA was normal, VWF multimer analysis was 2, and platelet count was 270 × 10⁹/L.
CasePreviousTesting: NA
GenotypingMethod: Direct sequencing of all exons, flanking intronic sequences, and the promoter of VWF was performed.
Gene: VWF
Variant: c.4825G>A, p.G1609R — heterozygous
HGVS: NM_000552.5(VWF):c.4825G>A (p.Gly1609Arg)
ClinVar: 100395
CAID: CA228665
gnomAD: https://gnomad.broadinstitute.org/variant/chr12-6018593-C-T?dataset=gnomad_r4
P21
Case: P21, F/5
DiseaseAssertion: VWD2M
FamilyInfo: Positive family history, no details provided.
ParentalGenotype: NA
CaseHPOFreeText: The bleeding score was 2, aPTT was 53 seconds, FVIII:C was 30%, and VWF:RCo was 25 IU/dL. The VWF:RCo/VWF:Ag ratio indicated a mild loss of high molecular weight multimers. RIPA was 4, VWF multimer analysis was 301, and platelet count was not specified.
CasePreviousTesting: NA
GenotypingMethod: Direct sequencing of all exons, flanking intronic sequences, and the promoter of VWF was performed.
Gene: VWF
Variant: c.4121G>T, p.R1374L — heterozygous
HGVS: NM_000552.5(VWF):c.4121G>T (p.Arg1374Leu)
ClinVar: 100331
CAID: CA228543
gnomAD: https://gnomad.broadinstitute.org/variant/chr12-6019297-C-A?dataset=gnomad_r4
Molecular Genetics of von Willebrand Disease in Korean Patients: Novel Variants and Limited Diagnostic Utility of Multiplex Ligation-Dependent Probe Amplification Analyses
PMID: 31240882
Gene: VWF
HGNCID: 12726
Type 3 Von Willebrand Disease: A Case Report of a Rare Entity
Gene: VWF
HGNCID: 12726
Case: 4 month old female
DiseaseAssertion: VWD type 3
FamilyInfo: both parents were sequenced ParentalGenotype(s): mother is VWF:c.2435delC carrier, father was negative
CasePresentingHPOs: HP:0011889 CaseHPOFreeRext: bleeding from injection site following vaccination administration CaseNOTHPOs: CaseNOTHPOFreeText: normal PT/PTT at 4 months. prolonged PTT, normal PT and platelet count upon repeat. Factor VIII levels <1%, VWF activity <15%
GenotypingMethod: unknown
Gene: VWF
Variant: c.2435delC in VWF gene, deletion in exon 6 of VWF gene
HGVS: NM_000552.5:c.2435del
ClinVarID: 303
gnomAD: 0.00007187 (116/1613916) https://gnomad.broadinstitute.org/variant/12-6044297-CG-C?dataset=gnomad_r4
Alloantibodies in von Willebrand disease
PMID: 29165738
Gene: VWF
HGNC: 12726 (type 1)
Note: Insufficient Evidence due to lack of variant information. This paper designates variants as only "missense, deletion, etc" and lacks specific neucleotide changes. All probands with identifiable variants in this paper were from other PMIDs, which were confirmed to be previously curated or added to the list to be curated.
II : 1
Case#: F3, II:1
DiseaseAssertion: Type 2 VWD
CaseHPOFreeText: all mutimers present, VWF:Ag = 45; VWF:RCo = 38; VWF:GPIbM = 45; 0.84; 1.00; 1.19
CasePreviousTesting: Not clearly described
Gene: VWF
Variant: p.[P1266L];[=]
HGVS: NM_000552.5(VWF):c.3797C>T (p.Pro1266Leu)
CAID: CA114170
gnomAD: https://gnomad.broadinstitute.org/variant/12-6019621-G-A?dataset=gnomad_r4
I : 1
Case#: F13, I:1
DiseaseAssertion: Type 2 VWD
CaseHPOFreeText: complete loss of high MWM, VWF:Ag = 69; VWF:RCo = 50; VWF:GPIbM = 71; 0.72; 1.04; 1.43
CasePreviousTesting: Not clearly described
Gene: VWF
Variant: p.[R1341Q];[=]
HGVS: c.4022G>A (p.Arg1341Gln)
CAID: CA114129
gnomAD: https://gnomad.broadinstitute.org/variant/12-6019396-C-T?dataset=gnomad_r4
I : 1
Case#: F3, I:1
DiseaseAssertion: Type 2 VWD
CaseHPOFreeText: all mutimers present, VWF:Ag = 60; VWF:RCo = 57; VWF:GPIbM = 59; 0.95; 0.98; 1.03
CasePreviousTesting: Not clearly described
Gene: VWF
Variant: p.[P1266L];[=]
HGVS: NM_000552.5(VWF):c.3797C>T (p.Pro1266Leu)
CAID: CA114170
gnomAD: https://gnomad.broadinstitute.org/variant/12-6019621-G-A?dataset=gnomad_r4
II : 1
Case#: F2, II:1
DiseaseAssertion: Type 2 VWD
CaseHPOFreeText: all mutimers present, VWF:Ag = 68; VWF:RCo = 66; VWF:GPIbM = 61; 0.97; 0.90; 0.93
CasePreviousTesting: Not clearly described
Gene: VWF
Variant: p.[P1266L];[=]
HGVS: NM_000552.5(VWF):c.3797C>T (p.Pro1266Leu)
CAID: CA114170
gnomAD: https://gnomad.broadinstitute.org/variant/12-6019621-G-A?dataset=gnomad_r4
II : 1
Case#: F12, II:1
DiseaseAssertion: Type 2 VWD
CaseHPOFreeText: complete loss of high MWM, VWF:Ag = 52; VWF:RCo = 18; VWF:GPIbM = 52; 0.34; 1.00; 2.92
CasePreviousTesting: Not clearly described
Gene: VWF
Variant: p.[R1341Q];[=]
HGVS: c.4022G>A (p.Arg1341Gln)
CAID: CA114129
gnomAD: https://gnomad.broadinstitute.org/variant/12-6019396-C-T?dataset=gnomad_r4
I : 1
Case#: F2, I:1
DiseaseAssertion: Type 2 VWD
CaseHPOFreeText: all mutimers present, VWF:Ag = 30; VWF:RCo = 29; VWF:GPIbM = 24; 0.97; 0.81; 0.84
CasePreviousTesting: Not clearly described
Gene: VWF
Variant: p.[P1266L];[=]
HGVS: NM_000552.5(VWF):c.3797C>T (p.Pro1266Leu)
CAID: CA114170
gnomAD: https://gnomad.broadinstitute.org/variant/12-6019621-G-A?dataset=gnomad_r4
I : 1
Case#: F11, I:1
DiseaseAssertion: Type 2 VWD
CaseHPOFreeText: complete loss of high MWM, VWF:Ag = 35; VWF:RCo = 5; VWF:GPIbM = 27; 0.14; 0.78; 5.44
CasePreviousTesting: Not clearly described
Gene: VWF
Variant: p.[R1306W];[=]
HGVS: c.3916C>T (p.Arg1306Trp)
CAID: CA114123
gnomAD: absent from gnomad v4.1.0
Evaluation of an heterogeneous group of patients with von Willebrand disease using an assay alternative to ristocetin induced platelet agglutination
PMID: 26206100
Gene: VWF
HGNCID: 12726
II : 1
Case#: F1, II:1
DiseaseAssertion: Type 2 VWD
CaseHPOFreeText: all mutimers present, VWF:Ag = 58; VWF:RCo = 54; VWF:GPIbM = 51; 0.94; 0.89; 0.95
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 : 3
Case#: F10, II:3
DiseaseAssertion: Type 2 VWD
CaseHPOFreeText: complete loss of high MWM, VWF:Ag = 53; VWF:RCo = 13; VWF:GPIbM = 37; 0.25; 0.69; 2.82
CasePreviousTesting: Not clearly described
Gene: VWF
Variant: p.[R1306W];[=]
HGVS: c.3916C>T (p.Arg1306Trp)
CAID: CA114123
gnomAD: absent from gnomad v4.1.0
11 c.3922C > A p.Arg1308Ser 28 A1 htz Missense O/A 34/77 na/50 64 CSA /82
Case: IP #11 in type 2B VWD sub-cohort
DiseaseAssertion: type 2B VWD
FamilyInfo:
ParentalGenotype(s):
CasePresentingHPOs: HP:0032370 - blood group A
CaseHPOFreeRext: VWF:Ag [IU/dL] = 77; VWF:Ac [IU/dL] = 50; FVIII:C [IU/dL] = 82
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.3922C>A p.Arg1308Ser
HGVS:
ClinVarID: not found
CAID: CA383506203
gnomAD: absent
51-54Type2A(IIA)c.4811T>AN p.Val1604Asp 28 A2 htz Missense O/A/O/O27/24/35/328/9/11/755
Case: IP #51 (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] = 27; VWF:Ac [IU/dL] = 8; FVIII:C [IU/dL] = 55
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
Type 2A c.1681_1684dup Nc.5278G > Ap.Leu562Argfsp.Val1760Ile C1430D2-VWD2A3htzhtzSmall Dupl.Missensena 64 39 104
Case: 4
DiseaseAssertion: type 2A VWD
FamilyInfo:
ParentalGenotype(s):
CasePresentingHPOs:
CaseHPOFreeRext: VWF:Ag [IU/dL] = 64; VWF:Ac [IU/dL] = 39; FVIII:C [IU/dL] = 104
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.1681_1684dup p.Leu562Argfs
HGVS:
ClinVarID: not found
CAID: absent
gnomAD: absent
MultipleGeneVariants:
Gene: VWF
Variant: c.5278G > A p.Val1760Ile
CAID: CA228708
gnomAD: 0.001050 (1695 in 1614194) 4 homozygotes https://gnomad.broadinstitute.org/variant/12-6016549-C-T?dataset=gnomad_r4
41 U (A/1) c.6981T > G p.Cys2327Trp 41 C1 htz Missense O 37 32 103
Case: IP #41 in type U VWD sub-cohort
DiseaseAssertion: unclassified (A/1) VWD
FamilyInfo:
ParentalGenotype(s):
CasePresentingHPOs: HP:0032442 - blood group O
CaseHPOFreeRext: VWF:Ag [IU/dL] = 37; VWF:Ac [IU/dL] = 32; FVIII:C [IU/dL] = 103
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.6981T>G
HGVS:
ClinVarID: not found
CAID: CA383492037
gnomAD: absent
14 Type2A (IIE)c.3362G>T p.Arg1121Met 25 D3-C8-3htz Missense A 11 5 21
Case: IP #14
DiseaseAssertion: type 2A (IIE) VWD
FamilyInfo:
ParentalGenotype(s):
CasePresentingHPOs: HP:0032370 - blood group A
CaseHPOFreeRext: VWF:Ag [IU/dL] = 11; VWF:Ac [IU/dL] = 5; FVIII:C [IU/dL] = 21
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.3362G>T p.Arg1121Met
HGVS:
ClinVarID: not found
CAID: CA383511879
gnomAD: absent
c.4136 G>T
Gene:VWF
HGNCID:12726
PMID33550910
Case:38-year-old woman from Saudi Arabia
DiseaseAssertion:VWD type 2B
FamilyInfo:Mother and brother suffered from epistaxis (no genotypes). Two sons and one daughter: both sons carry the same mutation, but only one presents with minimal epistaxis.
ParentalGenotype(s):Not available
CasePresentingHPOs:HP:0001934, HP:0004846, HP:0011871
CaseNOTHPOs:HP:0000421, HP:0000132
CaseNOTHPOFreeText:multiple dental extractions without bleeding complications
CaseHPOFreeRext:RIPA (+) Rist 0.5 mg/mL
CasePreviousTesting:No
GenotypingMethod:NGS
Gene:VWF
Variant:c.4136 G>T (p. R1379 L)
HGVS:NC_000012.12:g.6019282C>A
ClinVarID:
CAID:CA383504438
gnomAD:
40 S
Case: Patient 40, Family S (Table 1.), F/38, Afro-Caribbean
DiseaseAssertion: Indeterminant
FamilyInfo: Patient 39 (F/76, Afro-Caribbean), Patient 41 (M/63, Afro-Caribbean) and Patient 52 (F/48, Afro Caribbean) also from Family S. (Table 1.)
ParentalGenotype(s): NA
CasePresentingHPOs:
CaseHPOFreeRext: BAT = 0, FVIII:C (IU/dL) = 88, VWF:Ag (IU/dL) = 132, VWF:Act (IU/dL) = 35
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.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.4628C > G p.(Ser1543Cys)
HGVS: NM_000552.5:c.4628C>G (p.Ser1543Cys)
ClinVarID: 4533008
CAID: CA383500651
gnomAD:
34 P
Case: Patient 34, Family P (Table 1.), F/67, Afro-Caribbean
DiseaseAssertion: VWD2A (IIE)/2N
FamilyInfo: NA
ParentalGenotype(s): NA
CasePresentingHPOs:
CaseHPOFreeRext: BAT = 7, FVIII:C (IU/dL) = 11, VWF:Ag (IU/dL) = 23, VWF:Act (IU/dL) = 19
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.2561G>A, p.(Arg854Gln)
HGVS: NM_000552.5:c.2561G>A (p.Arg854Gln)
ClinVarID: 296
CAID: CA114139
gnomAD: MAF of 0.005974 (17050/1180026 alleles) in European (non-Finnish) population https://gnomad.broadinstitute.org/variant/chr12-6034812-C-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
24 I
Case: Patient 24, Family I (Table 1.), F/92, 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 25 (F/62, Afro-Carribean) also from Family I. (Table 1.)
ParentalGenotype(s): NA
CasePresentingHPOs:
CaseHPOFreeRext: BAT =3, FVIII:C (IU/dL) = 61, VWF:Ag (IU/dL) = 30, VWF:Act (IU/dL) = 29
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
20 M
Case: Patient 20, Family M (Table 1.), M/80, Afro-Caribbean
DiseaseAssertion: VWD2A (IIE)
FamilyInfo: Patient 62 (F/42, Afro-Caribbean) also in Family M. (Table 1.)
ParentalGenotype(s): NA
CasePresentingHPOs:
CaseHPOFreeRext: BAT =10, FVIII:C (IU/dL) = NA, VWF:Ag (IU/dL) = 12, 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.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
50 X
Case: Patient 50, Family X (Table 1.), F/47, Afro-Caribbean
DiseaseAssertion: VWD1
FamilyInfo: NA
ParentalGenotype(s): NA
CasePresentingHPOs:
CaseHPOFreeRext: BAT = 10, FVIII:C (IU/dL) = 72, VWF:Ag (IU/dL) = 22, VWF:Act (IU/dL) = 28
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.3686T > G, p.(Val1229Gly)
HGVS: NM_000552.5(:c.3686T>G (p.Val1229Gly)
ClinVarID: 100274
CAID: CA228433
gnomAD: MAF of 0.01604 (1200/74796 alleles) in African/African American population https://gnomad.broadinstitute.org/variant/chr12-6019732-A-C?dataset=gnomad_r4
Variant: c.3692A > C, p.(Asn1231Thr)
HGVS: NM_000552.5:c.3692A>C (p.Asn1231Thr)
ClinVarID: 100275
CAID: CA228435
gnomAD: MAF of 0.01203 (900/74802 alleles) in African/African American population https://gnomad.broadinstitute.org/variant/12-6019726-T-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
10 G
Case: Patient 10, Family G (Table 1.), M/22, Afro-Caribbean
DiseaseAssertion: VWD2A (IIE)
FamilyInfo: Patient 16 (F/58, Afro-Caribbean) and Patient 17 (F/79, Afro-Caribbean) also from Family G. (Table 1.)
ParentalGenotype(s): NA
CasePresentingHPOs:
CaseHPOFreeRext: BAT =1, FVIII:C (IU/dL) = 26, VWF:Ag (IU/dL) = 15, VWF:Act (IU/dL) = 4
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
27 N
Case: Patient 27, Family N (Table 1.), M/20, Afro-Caribbean
DiseaseAssertion: VWD2A (IIE)
FamilyInfo: Patient 26 (F/58, Afro-Caribbean) also in Family N. (Table 1.)
ParentalGenotype(s): NA
CasePresentingHPOs:
CaseHPOFreeRext: BAT =2, FVIII:C (IU/dL) = 18, VWF:Ag (IU/dL) = 18, VWF:Act (IU/dL) = 6
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 =)
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.2510C > A, p.(Ala837Asp)
HGVS: NM_000552.5:c.2510C>A (p.Ala837Asp)
ClinVarID: 993127
CAID: CA6403049
gnomAD: MAF of 0.02329 (1748/75040 alleles) in African/African American population https://gnomad.broadinstitute.org/variant/chr12-6036424-G-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.5173C > T, p.(Pro1725Ser)
HGVS: NM_000552.5:c.5173C>T (p.Pro1725Ser)
ClinVarID: 619937
CAID: CA6402355
gnomAD: MAF of 0.02447 (1836/75022 alleles) in African/African American population https://gnomad.broadinstitute.org/variant/chr12-6016654-G-A?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
36 R
Case: Patient 36, Family R (Table 1.), M/22, Afro-Caribbean
DiseaseAssertion: VWD2A (IIE)
FamilyInfo: Patient 37 (M/20, Afro-Caribbean) and Patient 38 (F/51, Afro-Caribbean) also from Family R. (Table 1.)
ParentalGenotype(s): NA
CasePresentingHPOs:
CaseHPOFreeRext: BAT = 1, FVIII:C (IU/dL) = 28, VWF:Ag (IU/dL) = 15, 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.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
VWD1-10†36.648.50.7510432.4NormalExon 37c.6504C>A‡p.Cys2168TerD4Stop gained
Case: Croatian adult patient
DiseaseAssertion: VWD1
FamilyInfo: No variant detected in a family member
ParentalGenotype(s): Not specified
CasePresentingHPOs: HP:0001892, HP:0011890, HP:0000132, HP:0002239, HP:0000790, HP:0001342
CaseHPOFreeText: Reduced VWF:Ag of 48.5%, VWF:GPIbM of 36.6% and VWF:CBA of 32.4%. Normal FVIII:C of 104%. 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.6504C>A
HGVS: NM_000552.4:c.6504C>A (p.Cys2168Ter)
ClinVarID: Not available
CAID: CA383491048
gnomAD: Not available
VWD1-1228.727.21.064318.0NormalExon 37c.6596G>A‡p.Cys2199TyrD4Missense
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 27.2%, VWF:GPIbM of 28.7%, FVIII:C of 43% and VWF:CBA of 18%. 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.6596G>A
HGVS: NM_000552.4:c.6596G>A (p.Cys2199Tyr)
ClinVarID: Not available
CAID: CA383490627
gnomAD: Not available
c.571T>C
Case: Croatian adult patient
DiseaseAssertion: VWD3
FamilyInfo: Not specified
ParentalGenotype(s): Not specified
CasePresentingHPOs: HP:0001892, HP:0011890, HP:0000132, HP:0002239, HP:0000790, HP:0001342
CaseHPOFreeText: <4.0% VWF:Ag, <4.0% VWF:GPIbM, 5% FVIII:C and <1% VWF:CBA.
CaseNOTHPOs: Not specified
CaseNOTHPOFreeText: Not specified.
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.571T>C
HGVS: NM_000552.4:c.571T>C (p.Trp191Arg)
ClinVarID: Not available
CAID: CA383514932
gnomAD: Not available
T3-3
Case: T3-3, male, 27yo
DiseaseAssertion: VWD3
FamilyInfo:
ParentalGenotype(s):
CasePresentingHPOs:
CaseHPOFreeText: Blood type: A+, bleeding score = 29, VWF:Ag (IU/mL) = 0.02; VWF:RCo (IU/mL) = 0.04; FVIII:C (IU/mL) = 0.01
CaseNOTHPOs:
CaseNOTHPOFreeText:
CasePreviousTesting:
GenotypingMethod: qRT-PCR
PreviouslyPublished:
Gene: VWF
Variant 1: c.3939G>A (p.Trp1313Ter)
HGVS: NM_000552.5:c.3939G>A (p.Trp1313Ter)
ClinVarID: n/a
CAID: CA383506120; https://reg.clinicalgenome.org/redmine/projects/registry/genboree_registry/by_caid?caid=CA383506120
gnomAD: absent
Variant 2: c.5842+1G>C
HGVS: NM_000552.5:c.5842+1G>C
ClinVarID: n/a
CAID: CA383492977; https://reg.clinicalgenome.org/redmine/projects/registry/genboree_registry/by_caid?caid=CA383492977
gnomAD: absent
T1-1
Case: T1-1, female, 33yo
DiseaseAssertion: VWD1
FamilyInfo:
ParentalGenotype(s):
CasePresentingHPOs:
CaseHPOFreeText: Blood type: O+, bleeding score = 4, VWF:Ag (IU/mL) = 0.27; VWF:RCo (IU/mL) = 0.19; FVIII:C (IU/mL) = 0.53
CaseNOTHPOs:
CaseNOTHPOFreeText:
CasePreviousTesting:
GenotypingMethod: qRT-PCR
PreviouslyPublished:
Gene: VWF
Variant: c.1897T>C (.Cys633Arg)
HGVS: NM_000552.5:c.1897T>C (.Cys633Arg)
ClinVarID: n/a
CAID: CA383496953; https://reg.clinicalgenome.org/redmine/projects/registry/genboree_registry/by_caid?caid=CA383496953
gnomAD: absent
2N
Case: 2N, female, 33yo
DiseaseAssertion: VWD2N
FamilyInfo:
ParentalGenotype(s):
CasePresentingHPOs:
CaseHPOFreeText: Blood type: A, bleeding score = 8, VWF:Ag (IU/mL) = 0.97; VWF:RCo (IU/mL) = 1.20; FVIII:C (IU/mL) = 0.44
CaseNOTHPOs:
CaseNOTHPOFreeText:
CasePreviousTesting:
GenotypingMethod: qRT-PCR
PreviouslyPublished:
Gene: VWF
Variant 1: c.2561G>A (p.Arg854Gln)
Variant 2: unknown
HGVS: NM_000552.5(VWF):c.2561G>A (p.Arg854Gln)
ClinVarID: 296; https://www.ncbi.nlm.nih.gov/clinvar/variation/296/?new_evidence=false
CAID:
gnomAD: MAF = 0.005692 in European (Finnish) population; 2 homozygotes
Case: P35, Chinese, female, 60yo
DiseaseAssertion: VWD3
FamilyInfo: NA
ParentalGenotype(s): NA
CasePresentingHPOs: HP:0012147
(Reduced quantity of VWF)
CaseHPOFreeText: type O blood, bleeding score = 20; VWF:Ag (%) = 1.5, VWF:RCo (%) = 1.3, FVIII:C (%) = 3.1, VWF:CB (%) = 1.1, VWFpp (%) = 1.3, VWF:RCo/VWF:Ag = 0.9, VWF:CB/VWF:Ag = 0.7, VWFpp/VWF:Ag = 0.9, FVIII:C/VWF:Ag = 2.1
CaseNOTHPOs:
CaseNOTHPOFreeText:
CasePreviousTesting: NA
GenotypingMethod: NGS
PreviouslyPublished: NA
Gene: VWF
Variant: c.5870delA - unregistered variant
HGVS: NA
ClinVarID: NA
CAID: NA
gnomAD: NA
Case: P68, Chinese, female, 12yo
DiseaseAssertion: VWD2A
FamilyInfo: NA
ParentalGenotype(s): NA
CasePresentingHPOs: HP:0012147
(Reduced quantity of VWF)
CaseHPOFreeText: type A blood, bleeding score = 6; VWF:Ag (%) = 14.1, VWF:RCo (%) = 1.3, FVIII:C (%) = 42.3, VWF:CB (%) = 7.3, VWFpp (%) = 16.9, VWF:RCo/VWF:Ag = 0.1, VWF:CB/VWF:Ag = 0.5, VWFpp/VWF:Ag = 1.2, FVIII:C/VWF:Ag = 3.0
CaseNOTHPOs:
CaseNOTHPOFreeText:
CasePreviousTesting: NA
GenotypingMethod: NGS
PreviouslyPublished: NA
Gene: VWF
Variant: c.3830A>G (p.Asp1277Gly)
HGVS: NM_000552.5:c.3830A>G (p.Asp1277Gly)
ClinVarID: NA
CAID: CA383506912; http://reg.clinicalgenome.org/redmine/projects/registry/genboree_registry/by_caid?caid=CA383506912
gnomAD: absent
Case: P86, Chinese, female, 20yo
DiseaseAssertion: VWD3
FamilyInfo: NA
ParentalGenotype(s): NA
CasePresentingHPOs: HP:0012147
(Reduced quantity of VWF)
CaseHPOFreeText: type O blood, bleeding score = 14; VWF:Ag (%) = 0.5, VWF:RCo (%) = <0.5, FVIII:C (%) = 5.7, VWF:CB (%) = <0.5, VWFpp (%) = <0.5`, VWF:RCo/VWF:Ag = NA, VWF:CB/VWF:Ag = NA, VWFpp/VWF:Ag = NA, FVIII:C/VWF:Ag = 11.4
CaseNOTHPOs:
CaseNOTHPOFreeText:
CasePreviousTesting: NA
GenotypingMethod: NGS
PreviouslyPublished: NA
Gene: VWF
Variant: c.322A>T (p.Arg108Ter)
HGVS: NM_000552.5:c.322A>T (p.Arg108Ter)
ClinVarID: NA
CAID: CA383519152; http://reg.clinicalgenome.org/redmine/projects/registry/genboree_registry/by_caid?caid=CA383519152
gnomAD: absent
Variant: Exons 6–16 del - unregistered variant
HGVS:
ClinVarID:
CAID:
gnomAD:
0.33
Case: 2A-3
DiseaseAssertion: VWD2A
FamilyInfo:
ParentalGenotype(s):
CasePresentingHPOs: AcuStar RCo/Ag = 0.33; AcuStar CB/Ag = 0.08; ELISA CB/Ag = 0.25
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
11*ItalyM/48<1—YesMild6182delTFS36HomozygousN.A.
Case: 11, M, 48, Italian
DiseaseAssertion: VWD type 3
FamilyInfo: Consanguinity: yes
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:
6182delT (FS), Exon 36, Homozygous
1ItalyF/38<1—NoSevere276delT/2157delAFS/FS4/16HeterozygousTth111II (+)/BsmAI (+)
Case: 1, F, 38, 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:
276delT (FS), Exon 4
2157delA (FS), Exon 16
Homozygous
40IndiaM/26<1—NoMild5053+1G→A/7294delGTFS/FS28/43HeterozygousEcoRII (−)/N.A.
Case: 40, M, 26, 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:
5053+1G→A (intronic), Exon 28
7294delGT (FS), Exon 43
Compound Heterozygous
Note: The article assumed that 5053+1G→A causes 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.
16*IranF/161—YesSevere1093C→TR365X9HomozygousTaqI (−)
Case: 16, F, 16, Iranian
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:
1093C→T (Arg365X), Exon 9, Homozygous
34IndiaM/15<1—NoMild7300C→TR2434X43Homozygous“HphI (−)”
Case: 34, M, 15, 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:
7300C→T (Arg2434X), Exon 43, 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.
Characterization of W1745C and S1783A: 2 novel mutations causing defective collagen binding in the A3 domain of von Willebrand factor
PMID: 19687512
Gene: VWF
HGNCID: 12726
Life-threatening subdural hematoma after aortic valve replacement in a patient with Heyde syndrome: a case report
PMID: 28789675
Gene: VWF
HGNCID: 12726
Cryptic non-canonical splice site activation ispart of the mechanism that abolishesmultimer organization in the c.2269_2270delvon Willebrand factor
Article Information:
PMID: 31320553
Gene: VWF
HGNCID: 12726
F1Proband P1G39R D141NCompound heterozygous2.241.070.971.02.32.06
Case: Proband 1 (P1)
DiseaseAssertion: VWD III
FamilyInfo:
Father
Asp141Asn impaired multimerization of von Willebrand factor; reduced oxidoreductase activity
VWF are retained in the ER and fail to be transported to the Golgi
APTT ratio (seconds): 1.09
PT ratio (seconds): 1.15
TT ratio (seconds): 1.24
VWF: Ag (IU/dL): 48.4
VWF:RCo (IU/dL): 50.2
FVIII:C (IU/dL): 73.5
BS: 0
Mother
Gly39Arg impaired multimerization of von Willebrand factor; reduced oxidoreductase activity
VWF are retained in the ER and fail to be transported to the Golgi
APTT ratio (seconds): 1.12
PT ratio (seconds): 1.05
TT ratio (seconds): 0.91
VWF: Ag (IU/dL): 30.3
VWF:RCo (IU/dL): 36.4
FVIII:C (IU/dL): 50.6
BS: 1
ParentalGenotype: n/a
Father: Asp141Asn, Heterozygous
Mother: Gly39Arg, Heterozygous
CasePresentingHPOs: n/a
CaseHPOFreeText:
Asp141Asn and Gly39Arg impaired multimerization; reduced oxidoreductase activity; undetectable von Willebrand factor (VWF) multimer
VWF are retained in the ER and fail to be transported to the Golgi
APTT ratio (seconds): 2.24
PT ratio (seconds): 1.07
TT ratio (seconds): 0.97
VWF: Ag (IU/dL): 1.0
VWF:RCo (IU/dL): 2.3
FVIII:C (IU/dL): 2.0
BS: 6
CaseNotHPOs: n/a
CaseNotHPOFreeText: n/a
CasePreviousTesting: n/a
Gene: VWF
Variant:
Asp141Asn
Gly39Arg
Compound heterozygous
A Child With Hereditary Spherocytosis Associated With Von Willebrand’s Disease: A Case Report From Saudi Arabia
PMID: 36324358
Gene: SLC4A1
HGNCID: 12726
14 2 F 31 c.5335C.T p.R1779* Htz 3 2.6 6 + +
Case: 14, F, 2 years, Indian
DiseaseAssertion: VWD type 3
FamilyInfo: Consanguinity: yes, family history of disease
ParentalGenotype: n/a
CasePresentingHPOs: n/a
CaseHPOFreeText: FVIII:C: (U/dl): 3, VWF:Ag (U/dl): 2.6, Bleeding Score: 6
CaseNotHPOs: n/a
CaseNotHPOFreeText: n/a
CasePreviousTesting: n/a
Gene: VWF
Variant:
c.5335C>T (p.Arg1779*), Exon 31, Heterozygous
5 49 F 9 c.1093C.T p.R365* Hmz ,1 ,1 13 + -
Case: 5, F, 49 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: 13
CaseNotHPOs: n/a
CaseNotHPOFreeText: n/a
CasePreviousTesting: n/a
Gene: VWF
Variant:
c.1093C>T (p.Arg365*), Exon 9, Homozygous
7 4 F 10 c.1117C.T p.R373* Hmz ,1 ,1 24 - +
Case: 7, F, 4 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: 24
CaseNotHPOs: n/a
CaseNotHPOFreeText: n/a
CasePreviousTesting: n/a
Gene: VWF
Variant:
c.1117C>T (p.Arg373*), Exon 10, Homozygous
51 22 F 25 c.3379+1G.A Htz ,1 4.8 9 - -
Case: 51, F, 22 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, VWF:Ag (U/dl): 4.8, Bleeding Score: 9
CaseNotHPOs: n/a
CaseNotHPOFreeText: n/a
CasePreviousTesting: n/a
Gene: VWF
Variant:
c.3379+1G>A, Exon 25
Heterozygous
46 5 F 28 c.3686T.G p.V1229G Htz 2.5 3.4 32 + -c.3692A.C p.N1231Tc.3789G.A p.S1263Sc.3797C.T p.P1266Lc.3835G.A p.V1279Ic.3862C.G p.L1288V
Case: 46, F, 5 years, Indian
DiseaseAssertion: VWD type 3
FamilyInfo: family history of disease, Consanguinity: no
ParentalGenotype: n/a
CasePresentingHPOs: n/a
CaseHPOFreeText: FVIII:C: (U/dl): 2.5, VWF:Ag (U/dl): 3.4, Bleeding Score: 32
CaseNotHPOs: n/a
CaseNotHPOFreeText: n/a
CasePreviousTesting: n/a
Gene: VWF
Variant:
c.3686T>G (p.Val1229Gly), Exon 28
c.3692A>C (p.Asn1231Thr), Exon 28
c.3789G>A (p.Ser1263Ser), Exon 28
c.3797C>T (p.Pro1266Leu), Exon 28
c.3835G>A (p.Val1279Ile), Exon 28
c.3862C>G (p.Leu1288Val), Exon 28
Heterozygous
67 13 M 28 c.3686T.G p.V1229G Hmz ,1 2.6 7 + +c.3692A.C p.N1231Tc.3931C.T p.Q1311*
Case: 67, M, 13 years, Indian
DiseaseAssertion: VWD type 3
FamilyInfo: family history of disease, Consanguinity: yes
ParentalGenotype: n/a
CasePresentingHPOs: n/a
CaseHPOFreeText: FVIII:C: (U/dl): <1, VWF:Ag (U/dl): 2.6, Bleeding Score: 7
CaseNotHPOs: n/a
CaseNotHPOFreeText: n/a
CasePreviousTesting: n/a
Gene: VWF
Variant:
c.3686T>G (p.Val1229Gly), Exon 28
c.3692A>C (p.Asn1231Thr), Exon 28
c.3931C>T (p.Gln1311*), Exon 28
Homozygous
24 0.8 F 14 c.1693C.Tp.Q565* Hmz 2.4 2 3 - +
Case: 24, F, 0.8 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): 2.4, VWF:Ag (U/dl): 2, Bleeding Score: 3
CaseNotHPOs: n/a
CaseNotHPOFreeText: n/a
CasePreviousTesting: n/a
Gene: VWF
Variant:
c.1693C>T (p.Gln565*), Exon 14, Homozygous
85 6 F 28 c.4578G.Tp.Q1526H Htz ,1 2 2 - +
Case: 85, F, 6 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, Bleeding Score: 2
CaseNotHPOs: n/a
CaseNotHPOFreeText: n/a
CasePreviousTesting: n/a
Gene: VWF
Variant:
c.4578G>T (p.Gln1526His), Exon 28
Heterozygous
32 18 M 22 c.2908delCp.L970del Hmz 3.2 ,1 12 - -
Case: 32, M, 18 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): 3.2, VWF:Ag (U/dl): <1, Bleeding Score: 12
CaseNotHPOs: n/a
CaseNotHPOFreeText: n/a
CasePreviousTesting: n/a
Gene: VWF
Variant:
c.2908delC (p.Leu970del), Exon 22, Homozygous
30 1.1 M 28 c.3931C.T p.Q1311* Hmz ,1 ,1 4 -
Case: 30, M, 1.1 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: 4
CaseNotHPOs: n/a
CaseNotHPOFreeText: n/a
CasePreviousTesting: n/a
Gene: VWF
Variant:
c.3931C>T (p.Gln1311*), Exon 28, Homozygous
11 13 F 31 c.5335C.T p.R1779* Hmz 1 2.3 11 - -
Case: 11, F, 13 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, VWF:Ag (U/dl): 2.3, Bleeding Score: 11
CaseNotHPOs: n/a
CaseNotHPOFreeText: n/a
CasePreviousTesting: n/a
Gene: VWF
Variant:
c.5335C>T (p.Arg1779*), Exon 31, Homozygous
rs617500716128464c.4120C > T28p.R1374C110.0000242A/M
Case:n.a.
DiseaseAssertion:VWD 2A/M
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: c.4120C > T
HGVS: NM_000552.5:c.4120C>T
ClinVarID:n.a.
CAID:n.a.
gnomAD:n.a.
rs617493956128641c.3943C > T28p.R1315C20.0000242A/M
Case: n.a.
DiseaseAssertion: VWD 2A/M
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.3943C>T (p.Arg1315Cys)
HGVS:NM_000552.5:c.3943C>T
ClinVarID:100310
CAID:n.a.
gnomAD:n.a.
von Willebrand factor disruption and continuous-flow circulatory devices
PMID: 28756118
Gene: VWF
HGNCID: 12726
T112M/4840.040.040.08c.8418_8419insTCCCp.Ser2807 fs52Homozygous
Case: T112, M, 48
DiseaseAssertion: VWD type 3
FamilyInfo: n/a
CasePresentingHPOs: n/a
CaseHPOFreeText: Bleeding Score: 4 (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): 0.08
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
T032F/19130.010.000.01c.3379 + 1 G>A-25Heterozygous
Case: T032, F, 19
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): 0.01, 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.3379 + 1 G>A, Exon 25, 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
T121M/6270.020.050.06c.7399C>T, c.8418_8419insTCCCp.Gln2467*, p.Ser2807 fs43/52Compound heterozygous
Case: T121, M, 62
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): 0.02, VWF:RCo (IU/ml): 0.05, FVIII:C (IU/ml): 0.06
CaseNotHPOs: n/a
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
T085M/17230.040.030.01c.1926G>A, c.2438dupGp.Trp642*, p.Gly813 fs15/18Compound heterozygous
Case: T085, M, 17
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): 0.04, VWF:RCo (IU/ml): 0.03, FVIII:C (IU/ml): 0.01
CaseNotHPOs: n/a
CaseNotHPOFreeText: n/a
CasePreviousTesting: n/a
Gene: VWF
Variant:
c.1926G>A (p.Trp642*), Exon 15
c.2438dupG (p.Gly813 fs), 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
Type 2N von Willebrand disease: Characterization and diagnostic difficulties
PMID: 29115006
Gene: VWF
HGNCID: 12726
Case: Patient C
DiseaseAssertion: VWD2N
FamilyInfo: Family 2
ParentalGenotype(s):
CasePresentingHPOs: HP:0012147, HP:0030129, HP:0030130, HP:0011871
CaseHPOFreeText: PTsec = 38.0, FVIII U/dL = 37.6, FVIII ratio = 0.26, VWF:Ag U/dL = 146.2, VWF:FVIIIB U/dL = 34.0, VWF:FVIIIB ratio = 0.20, VWF:CB U/dL = 157.5, VWF:RCo U/dL = 137.4, RIPA % = 87.9, PlatVWF:Ag U/dL = 102.7
CaseNOTHPOs:
CaseNOTHPOFreeText: n/a
CasePreviousTesting: n/a
GenotypingMethod: "Genetic analysis was performed on exons 17-20 of the VWF gene as previously described" (PMID: 12393698)
PreviouslyPublished: n/a
Gene: VWF
Variant: c.2561G>A (p.Arg854Gln); homozygous
HGVS: NM_000552.5(VWF):c.2561G>A (p.Arg854Gln)
ClinVarID: 296; https://www.ncbi.nlm.nih.gov/clinvar/variation/296/?new_evidence=false
CAID: n/a
gnomAD: MAF (European, Finnish) = 0.005692; https://gnomad.broadinstitute.org/variant/12-6143978-C-T
Is von Willebrand disease linked to cholesteatoma aetiology?
PMID: 28236847
Gene: VWF
HGNCID: 12726
Case#: 07003, Age 29, Female, Blood Type O+ (Table S3)
Disease Assertion: VWD1
FamilyInfo: The patient is the only member of Family#0703.
Parental Genotype: Not listed
CasePresentingHPOs: N/A
CaseHPOFreeText: VWF:Ag: 25, VWF:RCo:24.9, FVIII:C: 50, VWF:CB:28
CaseNotHPOs: N/A
CaseNotHPOFreeText: Bleeding Score 5
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.5170+10C>T and NM_000552.4:c.8254-5T>G
ClinVar: 100418 ClinVar1
CAID: CA228702 and CA923726359 CAID1 CAID2
gnomAD: MAF of 0.01298 (326/ 25116 alleles) in the European (Finnish) population (CA228702).
Case#: 35011, Age 46, Male, Blood Type O+ (Table S3)
Disease Assertion: VWD 1
FamilyInfo: The patient is one of 3 members of Family#3505. All have VWD type 1 and patient# 35013 has an additional intronic variant that the other two family members don't have.
Parental Genotype: Not listed
CasePresentingHPOs: N/A
CaseHPOFreeText: VWF:Ag: 18, VWF:RCo: 14, FVIII:C: 42, VWF:CB: 12
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.5198T>C (p.Leu1733Pro) and NM_000552.4(VWF):c.6187C>T (p.Pro2063Ser)
ClinVar: 100436 ClinVar
CAID: CA383496267 and CA202650 CAID1 CAID2
gnomAD: MAF of 0.04854 (1486/30616 alleles) in the South Asian population (CA202650). gnomAD
Case#: 05008, Age 30, Male, Blood Type A+ (Table S3)
Disease Assertion: VWD1
FamilyInfo: Patient is the only member of Family #0507
Parental Genotype: Not listed
CasePresentingHPOs: N/A
CaseHPOFreeText: Bleeding Score 2, VWF:Ag: 5.8, VWF:RCo:5, FVIII:C: 7.4, VWF:CB:6.1
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#: 01025, Age 54, Male, Blood type AB- (Table S3)
Disease Assertion: VWD 1
FamilyInfo: Not listed
Parental Genotype: Not listed
CasePresentingHPOs: N/A
CaseHPOFreeText: Bleeding score 5, VWF:Ag: 27, VWF:RCo: 36, FVIII:C: 45, VWF:CB: 25
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: Not determined
ClinVar: N/A
CAID: N/A
gnomAD: N/A
Case#: 16001, Age 50, Female, Blood Type A+
Disease Assertion: VWD 1
FamilyInfo: The patient is one of two members of Family#1616. Both patients have the same variants. (Patient#16002)
Parental Genotype: Not listed
CasePresentingHPOs: N/A
CaseHPOFreeText: Bleeding Score 7, VWF:Ag:21, VWF:RCo: 16, FVIII:C:108, VWF:CB:20
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.1110-26T>A (p.=) and NM_000552.4:c.5695T>C (p.Cys1899Arg)
ClinVar: N/A
CAID: CA6403542 and CA6402177 CAID1 CAID2
gnomAD: MAF of 0.008911 (222/ 24914 alleles) in the African Population ( CA6403542). MAF of 0.00006892 (1/14510 alleles) in the African population (CA6402177)
Case#: 22001, Age 41, Female, Blood Type O+ (Table S3)
Disease Assertion: VWD 1
FamilyInfo: The patient is the only member of Family# 2201.
Parental Genotype: Not listed
CasePresentingHPOs: N/A
CaseHPOFreeText: Bleeding Score 14, VWF:Ag:18, VWF:RCo:17.5, FVIII:C: 35, VWF:CB: 17
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.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: 0.01298 (326/25116 alleles) in the European (Finnish) population. (CA228702) gnomAD
Case#: 01019, Age 52, Female, Blood Type O+ (Table S3)
Disease Assertion: VWD 1
FamilyInfo: 3 other family members tested. All 3 had the same VWD type and variation type. (Family 0111)
Parental Genotype: not listed
CasePresentingHPOs:
CaseHPOFreeText: Bleeding Score 12, VWF:Ag: 17, VWF:RCo: 21, FVIII:C: 49, VWF:CB: 20
CaseNotHPOs:
CaseNotHPOFreeText:
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.3223-7_3236dup (p.Pro1079_Tyr1080insLeuGlnValAspProGluPr)
ClinVar: N/A
CAID: CA1139532066
gnomAD: N/A
Case#: 37002, Age 42, Female, Blood Type O+ (Table S3)
Disease Assertion: VWD 1
FamilyInfo: The patient is the only member of Family# 3702
Parental Genotype: Not listed
CasePresentingHPOs: N/A
CaseHPOFreeText: VWF:Ag: 36, VWF:RCo: 35, FVIII:C:49, VWF:CB: 27
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.324-2_326dup (p.Ser110GlufsTer13)
ClinVar: N/A
CAID: CA1139532196 CAID
gnomAD:N/A
Case#: 01006, Age 39, Female, Blood type O+ (Table S3)
Disease Assertion: VWD type 1
FamilyInfo: Not listed
Parental Genotype: Not listed
CasePresentingHPOs:
CaseHPOFreeText: Bleeding score 11, VWF:Ag: 27, VWF:RCo: 32, FVIII:C: 72, VWF:CB: 33
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.7730-56C>T
ClinVar: N/A
CAID: CA232280547
gnomAD: N/A
Case#: 05012, Age 10, Female, Blood Type O+ (Table S3)
Disease Assertion: VWD1
FamilyInfo: Patient is the only member of Family# 0511.
Parental Genotype: Not listed
CasePresentingHPOs: N/A
CaseHPOFreeText:Bleeding Score 4, VWF:Ag: 15, VWF:RCo:12.3, FVIII:C: 45, VWF:CB: 25
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.2119T>C
ClinVar: N/A
CAID: CA383494546 CAID
gnomAD: N/A
Case#: 13018, Age 5, Male, Blood type not determined (TableS3)
Disease Assertion: VWD 1
FamilyInfo: The patient is the only member of Family#1314.
Parental Genotype: Not listed
CasePresentingHPOs: N/A
CaseHPOFreeText: Bleeding Score 0, VWF:Ag:18, VWF:RCo:21, FVIII:C:39, VWF:CB: 15
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.4238C>T (p.Pro1413Leu)
ClinVar: 100342 ClinVar
CAID: CA228565 CAID
gnomAD: MAF of 0.00003266 ( 1/30616 alleles) in the South Asian population. gnomAD
Case#: Elayaperumal_2018_V-289 , F, 3 y.o. (onset), origin in India
DiseaseAssertion: VWD type 3
FamilyInfo: consanguinity, positive family history
ParentalGenotype: not reported
CasePresentingHPOs:
CaseHPOFreeText: Bleeding score 14, VWF:Ag of 0, FVIII:C 1.7%
CaseNotHPOs:
CaseNotHPOFreeText:
CasePreviousTesting: not reported
GenotypingMethod: CSGE and Sanger sequencing of VWF gene only.
Gene: VWF
Variant: homozygous c.311_312delAG
HGVS: NM_000552.3:c.311_312delAG (p.Gln104ArgfsTer19)
ClinVarID: 1065296
CAID: CA690612114
gnomAD: not found
MultipleGeneVariants:
VWD type 2M patients
Case: VWD type 2M patients
DiseaseAssertion: VWD 2M
FamilyInfo: Patients with 2M genetics variant in A3 or A1 domain of VWF
ParentalGenotypes(s):
CasePresentingHPOs:
CaseHPOFreeText: bleeding score= 5, VWF:Ag ratio = 0.32,VWF collagen(VWF:CB/VWF:AG)=0.80. A3 domain VWF:ACT(0.45,1.03) and VWF:CB(0.45,0.63)
CaseNOTHPOs:
CaseNOTHPOFreeText:
CasePreviousTesting:
Gene: VWF
Variant:
HGVS:
ClinVar:
CAID:
gnomAD:
2-years-old male
Case: 2 year old male at the time of genetic diagnosis, initially presenting with abnormal gait
DiseaseAssertion: Clinical exome sequencing showed the recurrent VWA1 founder mutation
FamilyInfo: no family history of neurological or musculoskeletal conditions
CasePresentingHPOs: HP:0001288 (abnormal gait), HP:0002359 (frequent falls), HP:0003701 (proximal muscle weakness)
CaseHPOFreeText: Gower's sign
Gene: VWA1
Variant: c.62_71dup (p.Gly25ArgfsTer74) (maternally inherited)
HGVS: NM_022834.5:c.62_71dup
ClinVar: 830327
gnomad: does not exist in database
MultipleGeneVariants: novel paternally inherited missense variant, c.212T>C (p.Leu71Pro)
A diagnosis of von Willebrand disease despite normal test results for factor VIII and von Willebrand factor antigen and activity Penelope Motum, Penelope Motum Haematology, NSW Health Pathology, Liverpool Hospital, New South Wales, AustraliaSearch for more papers by this authorSarah Just, Sarah Just Haematology, NSW Health Pathology, Liverpool Hospital, New South Wales, AustraliaSearch for more papers by this authorDiane Zebeljan, Diane Zebeljan Haematology, NSW Health Pathology, Liverpool Hospital, New South Wales, AustraliaSearch for more papers by this authorCatherine Nicholls, Catherine Nicholls Department of Genetic Pathology, SA Pathology, Adelaide, South Australia, AustraliaSearch for more papers by this authorGeoffrey Kershaw, Geoffrey Kershaw Haematology, NSW Health Pathology, Royal Prince Alfred Hospital, New South Wales, AustraliaSearch for more papers by this authorSusan Oliver, Susan Oliver Department of Haematology, Institute of Clinical Pathology and Medical Research (ICPMR), NSW Health Pathology, Westmead Hospital, Westmead, New South Wales, AustraliaSearch for more papers by this authorSoma Mohammed, Soma Mohammed Department of Haematology, Institute of Clinical Pathology and Medical Research (ICPMR), NSW Health Pathology, Westmead Hospital, Westmead, New South Wales, AustraliaSearch for more papers by this authorEmmanuel J. Favaloro, Corresponding Author Emmanuel J. Favaloro emmanuel.favaloro@health.nsw.gov.au orcid.org/0000-0002-2103-1661 Department of Haematology, Institute of Clinical Pathology and Medical Research (ICPMR), NSW Health Pathology, Westmead Hospital, Westmead, New South Wales, Australia Department of Haematology, Sydney Centres for Thrombosis and Haemostasis, Westmead, New South Wales, Australia Correspondence Emmanuel J. Favaloro, Department of Haematology, Institute of Clinical Pathology and Medical Research (ICPMR), Westmead Hospital, Westmead, New South Wales, 2145, Australia. Email: emmanuel.favaloro@health.nsw.gov.auSearch for more papers by this author
PMID: 31423628
Gene: VWF
HGNC: 12726
A novel VWF variant associated with type 2 von Willebrand disease in German Wirehaired Pointers and German Shorthaired Pointers
PMID: 28696025
Gene: VWF
HGNCID: 12726
21
Case: Patient 21 (Family H), male, 40yo
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 A, Platelet count x103/μl = 158, PFA 100 sec = >300, SPA % = NA, MADR mg/mL = 0.45, VWF:Ag U/dL = 32.5, VWF:CB U/dL = 14.7, VWF:CB ratio = 0.45, VWF:RCo U/dL = 18.7, VWF:RCo ratio = 0.59, Platelet VWF U/dL = 130, FVIII U/dL = 39.0, BAT F/M = NA
CaseNOTHPOs:
CaseNOTHPOFreeText:
CasePreviousTesting: NA
GenotypingMethod: Sequencing of exon 28 of VWF
PreviouslyPublished: NA
Gene: VWF
Variant: c.3916C>T (p.Arg1306Trp)
HGVS: NM_000552.4(VWF):c.3916C>T (p.Arg1306Trp)
ClinVarID: 288; https://www.ncbi.nlm.nih.gov/clinvar/variation/288/
CAID: NA
gnomAD: absent
13
Case: Patient 13 (Family C), male, 37yo
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 = 132, PFA 100 sec = >300, SPA % = 0, MADR mg/mL = 0.6, VWF:Ag U/dL = 51.9, VWF:CB U/dL = 10.6, VWF:CB ratio = 0.20, VWF:RCo U/dL = 25.2, VWF:RCo ratio = 0.48, Platelet VWF U/dL = 133.4, FVIII U/dL = 34.5, BAT F/M = 17
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
15
Case: Patient 15 (Family C), female, 14yo
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 = 126, PFA 100 sec = >300, SPA % = 0, MADR mg/mL = 0.45, VWF:Ag U/dL = 35.0, VWF:CB U/dL = 4.0, VWF:CB ratio = 0.11, VWF:RCo U/dL = 12.7, VWF:RCo ratio = 0.38, Platelet VWF U/dL = 141, FVIII U/dL = 46.0, 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
von Willebrand factor antigen levels are associated with burden of rare nonsynonymous variants in the VWF gene
PMID: 33556167
Gene: VWF
HGNCID: 12726
BII:3
Proband: FB_II:3, male age unknown
Family details: parents are unaffected heterozygotes, VWF:Ag on the low end of reference range
Labs: prolonged bleeding time (15min), reduced VWF:Ag (0.09 IU/mL), FVIII:Ag (0.33 IU/mL), FVIII:C (0.21 IU/mL), and VWF:RiCoF (0.04 IU/mL), absent multimers
Genotype: p.Arg273Trp reported as c.1067C>T (MANE transcript is 817C>T)
CAID: CA228829
Application of a strain rate gradient microfluidic device to von Willebrand's disease screening
PMID: 28660968
Gene: VWF
HGNCID: 12726
The Association of Aging With Von Willebrand Factor Levels and Bleeding Risk in Type 1 Von Willebrand Disease
PMID: 28874064
Gene: VWF
HGNCID: 12726
Enhanced Local Disorder in a Clinically Elusive von Willebrand Factor Provokes High-Affinity Platelet Clumping
PMID: 28533135
Gene: VWF
HGNCID: 12726
6.3y
Case: Patient 1, female, 6.3yo
DiseaseAssertion: VWD2A
FamilyInfo: NA
ParentalGenotype(s): NA
CasePresentingHPOs: HP:0012147, HP:0030129, HP:0030130, HP:0030132
(Reduced quantity of VWF, impaired ristocetin cofactor assay activity, Impaired von Willebrand factor collagen binding activity, Absence of large von Willebrand factor multimers)
CaseHPOFreeText: VWF:Ag = 22%, undetectable VWF:RCo and VWF:CB; Platelets (*109/L) = 194, Mean Platelet Volume (fL) = 11.6, FVIII:C (\%) = 23, VWF:CB (\%) <5, VWF:RCo (\%) = <5, aPTT (sec) = 47.6, PT (\%) = 94
CaseNOTHPOs: HP:0001873
(Thrombocytopenia)
CaseNOTHPOFreeText:
CasePreviousTesting: NA
GenotypingMethod: sequencing of exon 28 of the VWF
PreviouslyPublished: NA
Gene: VWF
Variant: c.3816C>G (p.Cys1272Trp)
HGVS: NM_000552.3:c.3816C>G (p.Cys1272Trp)
ClinVarID: NA
CAID: CA383506988; http://reg.clinicalgenome.org/redmine/projects/registry/genboree_registry/by_caid?caid=CA383506988
gnomAD: absent
Management of pregnancy and emergency caesarean delivery in a patient with type IIB von Willebrand disease and severe preeclampsia: A case report and literature review
PMID: 29997693
Gene: VWF
HGNCID: 12726
the affected son (III-1)
Case: Patient III-1, Male, 43 years (as of Dec 2010 follow-up) DiseaseAssertion: VWD type 2A, phenotype IIC ("VWD2AIIC-Miami"). Bleeding score 9 (elevated; nv <4). FamilyInfo: Son of II-3; part of 4-member, 2-generation pedigree, dominant transmission. ParentalGenotype(s): Mother (II-3) heterozygous for the variant, affected. Father's genotype not tested/not reported. CasePresentingHPOs: HP:0000421 (Epistaxis), HP:0001934 (Persistent bleeding after trauma — bleeding from minor wounds), HP:0004846 (Prolonged bleeding after surgery — post-surgical bleeding, bleeding at tooth extraction), HP:0030130 (Impaired VWF collagen binding activity; VWF:CB/Ag ratio 0.14, nv ≥0.8), HP:0030129 (Impaired VWF:RCo; VWF:RCo/Ag ratio 0.18, nv ≥0.8), HP:0030132 (Absence of large VWF multimers) CaseHPOFreeText: VWF:Ag markedly ELEVATED at 2.72× normal (nv 0.5-1.6) — highest of the four patients. Absolute VWF:RCo 0.40 and VWF:CB 0.37 (both below the ≥0.5 absolute threshold, so reduced in both absolute and ratio terms, unlike II-3). VWF:GPIbα binding 0.55 absolute / 0.20 ratio. FVIII:C 0.99 (normal, nv ≥0.6) with reduced FVIII-binding ratio (F8Br 0.49, nv ≥0.6). VWF propeptide:Ag ratio (ppr) 0.32, markedly reduced (nv 0.8-2.2). PFA-100 closure times markedly prolonged (both >300 sec). Hematoma and oral cavity bleeding also reported. No menorrhagia (not applicable, male). CaseNOTHPOs: NA CaseNOTHPOFreeText: NA CasePreviousTesting: Same family-wide testing history as Patient II-3 (extensive prior negative Sanger sequencing, causative variant found only via MLPA); not genome-wide. GenotypingMethod: Same as Patient II-3 — MLPA plus confirmatory RT-PCR/sequencing. PreviouslyPublished: PMID 8324222 (Ledford et al. 1993) — same family as originally reported. Gene: VWF Variant: Heterozygous complex in-frame duplication of VWF exons 9-10 (same variant as Patient II-3). HGVS: NM_000552.3:c.998_1156dup (p.Glu333_Pro385dup) ClinVarID: NA CAID: NA gnomAD: NA
III-5
Case: Patient III-5, Female, 37 years (as of Dec 2010 follow-up) DiseaseAssertion: VWD type 2A, phenotype IIC ("VWD2AIIC-Miami"). Bleeding score not done (nd). FamilyInfo: Daughter of II-3; part of 4-member, 2-generation pedigree, dominant transmission. ParentalGenotype(s): Mother (II-3) heterozygous for the variant, affected. Father's genotype not tested/not reported. CasePresentingHPOs: HP:0030130 (Impaired VWF collagen binding activity; VWF:CB/Ag ratio 0.14, nv ≥0.8), HP:0030129 (Impaired VWF:RCo; VWF:RCo/Ag ratio 0.15, nv ≥0.8), HP:0030132 (Absence of large VWF multimers) CaseHPOFreeText: Specific bleeding symptoms not individually itemized in the text for this patient (her bleeding score was not done, and the itemized symptom list in the Results section explicitly covers only the three patients with bleeding scores recorded). Text states only that "all studied patients" including this one have "a significant bleeding tendency with typical mucocutaneous bleeding symptoms." VWF:Ag ELEVATED at 2.01× normal (nv 0.5-1.6). Absolute VWF:RCo 0.30 and VWF:CB 0.29 (both below the ≥0.5 absolute threshold). VWF:GPIbα binding 0.39 absolute / 0.19 ratio. FVIII:C 0.85 (normal, nv ≥0.6) with reduced FVIII-binding ratio (F8Br 0.44, nv ≥0.6). VWF propeptide:Ag ratio (ppr) 0.61, reduced (nv 0.8-2.2). PFA-100 closure times prolonged (Epinephrine >267 sec, ADP >278 sec). CaseNOTHPOs: NA CaseNOTHPOFreeText: NA CasePreviousTesting: Same family-wide testing history as Patient II-3; not genome-wide. GenotypingMethod: Same as Patient II-3 — MLPA plus confirmatory RT-PCR/sequencing. PreviouslyPublished: PMID 8324222 (Ledford et al. 1993) — same family as originally reported. Gene: VWF Variant: Heterozygous complex in-frame duplication of VWF exons 9-10 (same variant as Patient II-3). HGVS: NM_000552.3:c.998_1156dup (p.Glu333_Pro385dup) ClinVarID: NA CAID: NA gnomAD: NA
III-3
Case: Patient III-3, Female, 41 years (as of Dec 2010 follow-up) DiseaseAssertion: VWD type 2A, phenotype IIC ("VWD2AIIC-Miami"). Bleeding score 14 (elevated; nv <4). FamilyInfo: Daughter of II-3; part of 4-member, 2-generation pedigree, dominant transmission. ParentalGenotype(s): Mother (II-3) heterozygous for the variant, affected. Father's genotype not tested/not reported. CasePresentingHPOs: HP:0000421 (Epistaxis), HP:0000132 (Menorrhagia), HP:0001934 (Persistent bleeding after trauma — bleeding from minor wounds), HP:0004846 (Prolonged bleeding after surgery — bleeding at tooth extraction), HP:0030130 (Impaired VWF collagen binding activity; VWF:CB/Ag ratio 0.12, nv ≥0.8), HP:0030129 (Impaired VWF:RCo; VWF:RCo/Ag ratio 0.15, nv ≥0.8), HP:0030132 (Absence of large VWF multimers) CaseHPOFreeText: VWF:Ag ELEVATED at 1.78× normal (nv 0.5-1.6) — least elevated of the four, though still above range. Absolute VWF:RCo 0.27 and VWF:CB 0.22 (both below the ≥0.5 absolute threshold). VWF:GPIbα binding 0.35 absolute / 0.20 ratio. FVIII:C 0.75 (normal, nv ≥0.6) with reduced FVIII-binding ratio (F8Br 0.50, nv ≥0.6). VWF propeptide:Ag ratio (ppr) 0.57, reduced (nv 0.8-2.2). PFA-100 closure times markedly prolonged (Epinephrine >300 sec, ADP >284 sec). No explicit mention of post-surgery bleeding for this patient specifically (unlike II-3 and III-1). CaseNOTHPOs: NA CaseNOTHPOFreeText: NA CasePreviousTesting: Same family-wide testing history as Patient II-3; not genome-wide. GenotypingMethod: Same as Patient II-3 — MLPA plus confirmatory RT-PCR/sequencing. PreviouslyPublished: PMID 8324222 (Ledford et al. 1993) — same family as originally reported. Gene: VWF Variant: Heterozygous complex in-frame duplication of VWF exons 9-10 (same variant as Patient II-3. HGVS: NM_000552.3:c.998_1156dup (p.Glu333_Pro385dup) ClinVarID: NA CAID: NA gnomAD: NA
The affected mother (II-3), the two affected daughters (III-3 and III-5) and the affected son (III-1) of the original family with VWD type IIC Miami were available for our study
Case: Patient II-3, Female, 67 years (as of Dec 2010 follow-up) DiseaseAssertion: VWD type 2A, phenotype IIC ("VWD2AIIC-Miami") — a historically named variant of type 2A characterized by paradoxically elevated VWF:Ag with reduced function; dominantly inherited in this family (unlike classic/most VWD2AIIC, which is recessive). Bleeding score 21 (very high; nv <4). FamilyInfo: Mother of III-1, III-3, and III-5 (all three affected); 4-member, 2-generation pedigree, dominant transmission. ParentalGenotype(s): NA — her own parents not part of this study. CasePresentingHPOs: HP:0000421 (Epistaxis), HP:0000132 (Menorrhagia), HP:0001934 (Persistent bleeding after trauma — bleeding from minor wounds), HP:0004846 (Prolonged bleeding after surgery — post-surgical bleeding, bleeding at tooth extraction), HP:0030130 (Impaired VWF collagen binding activity; VWF:CB/Ag ratio 0.18, nv ≥0.8), HP:0030129 (Impaired VWF:RCo; VWF:RCo/Ag ratio 0.22, nv ≥0.8), HP:0030132 (Absence of large VWF multimers) CaseHPOFreeText: VWF:Ag markedly ELEVATED at 2.50× normal (nv 0.5-1.6). Absolute VWF:RCo 0.54 and VWF:CB 0.46 (both near/within the lower end of normal in absolute terms, nv ≥0.5, but severely reduced relative to the elevated antigen). VWF:GPIbα binding 0.74 absolute / 0.30 ratio. FVIII:C 1.08 (normal, nv ≥0.6) with reduced FVIII-binding ratio (F8Br 0.61, at threshold, nv ≥0.6). VWF propeptide:Ag ratio (ppr) 0.71, reduced (nv 0.8-2.2) — indicates decreased clearance of mature VWF relative to propeptide. PFA-100 closure times markedly prolonged (Epinephrine and ADP both >300 sec, nv ≤165/≤118). Hematoma (bruising) and oral cavity bleeding also reported. Post-partum bleeding ultimately requiring hysterectomy. Historical DDAVP test performed in this patient specifically showed findings consistent with delayed VWF clearance. Oral contraceptive/desmopressin use not specified. CaseNOTHPOs: NA CaseNOTHPOFreeText: NA CasePreviousTesting: Extensive prior negative testing — partial sequencing in the original 1993 study plus subsequent complete Sanger sequencing of all VWF coding exons by multiple independent groups over ~20 years found no candidate mutation. The causative variant was only found via MLPA (multiplex ligation-dependent probe amplification), which detects copy-number changes that exon sequencing alone misses. Not genome-wide; VWF-targeted. GenotypingMethod: MLPA identified signal gain at exons 9-10 in all 4 family members; confirmed by duplication-junction-specific RT-PCR (sense primer in exon 10, antisense in exon 9) and by RT-PCR/sequencing across exons 8-11. Full genomic characterization (PCR primer walking, RepeatMasker, MFold in silico DNA-folding analysis) defined a complex rearrangement: a 5,047 bp duplication (intron 8 through part of intron 10, including exons 9 and 10) plus two deletions (1,348 bp and 2,301 bp) within intron 10, apparently mediated by inverted Alu repeat elements (proposed mechanism: replication slippage for the duplication, a stable Alu3/Alu4 inverted-repeat DNA secondary structure for the deletion). PreviouslyPublished: PMID 8324222 (Ledford MR, Rabinowitz I, Sadler JE, Kent JW, Civantos F. "New variant of von Willebrand disease type II with markedly increased levels of von Willebrand factor antigen and dominant mode of inheritance: von Willebrand disease type IIC Miami." Blood. 1993;82:169-75) — this is the original report of this same family. Gene: VWF Variant: Heterozygous complex in-frame duplication of VWF exons 9-10 (net transcript-level effect), D1 domain (VWF propeptide region). Recombinant expression studies (not patient-specific, applies to the variant generally): "homozygous" mutant VWF secreted only as dimers (no higher-order multimers); co-expression with WT VWF reproduced the patients' plasma multimer pattern exactly; mutant retained in unusually large intracellular granules colocalizing with PDI in the ER; ADAMTS13 proteolysis was not resistant, but an aberrant extra proteolytic band appeared in both patient plasma and recombinant mutant; infusion of recombinant mutant VWF into VWF-/- mice showed significantly prolonged half-life vs. WT (mean residence time 3.15h vs 1.90h, p=0.015), supporting decreased clearance as the mechanism for the paradoxically elevated VWF:Ag. HGVS: NM_000552.3:c.998_1156dup (p.Glu333_Pro385dup) ClinVarID: NA CAID: NA gnomAD: NA
Monitoring Therapy during Treatment of von Willebrand Disease
PMID: 27472426
Gene: VWF
HGNCID: 12726
patient with the p.L881R variation was also a compound heterozygote for the p.N1421K mutation
Case: L881R/N1421K heterozygous proband
DiseaseAssertion: VWD1
FamilyInfo: NA
ParentalGenotype(s): NA
CasePresentingHPOs: HP:0012147
(Reduced quantity of VWF)
CaseHPOFreeText: FVIII:C = 30 IU/dL, VWF:RCo = 3 IU/dL, VWF:Ag = 27 IU/dL, VWF:CB = 22 IU/dL, VWF:RCo/VWF:Ag = 0.11
CaseNOTHPOs: HP:0030132
(Absence of large von Willebrand factor multimers)
CaseNOTHPOFreeText:
CasePreviousTesting: NA
GenotypingMethod: NA
PreviouslyPublished: PMID: 16985174
Gene: VWF
Variant 1: c.2642T>G (p.Leu881Arg)
HGVS: NM_000552.5:c.2642T>G
ClinVarID: NA
CAID: CA383520052; http://reg.clinicalgenome.org/redmine/projects/registry/genboree_registry/by_caid?caid=CA383520052
gnomAD: absent
Variant 2: c.4263C>G (p.Asn1421Lys)
HGVS: NM_000552.4(VWF):c.4263C>G (p.Asn1421Lys)
ClinVarID: 100345; https://www.ncbi.nlm.nih.gov/clinvar/variation/100345/
gnomAD: absent
Use of a thrombopoietin receptor agonist in von Willebrand disease type 2B (p.V1316M) with severe thrombocytopenia and intracranial hemorrhage
PMID: 27885890
Gene: VWF
HGNCID: 12726
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
Classification and Characterization of Hereditary Types 2A, 2B, 2C, 2D, 2E, 2M, 2N, and 2U (Unclassifiable) von Willebrand Disease
PMID: 17000885
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
We report on the coinheritance of mild haemophilia A and type 1 von Willebrand disease (VWD) in a genetically characterized Italian family. The proband is a 56-year-old man carrying both the c.2167G>A mutation in the factor VIII (FVIII) gene (responsible for p.A723T substitution) and the c.4751A>G mutation (p.Y1584C) in the von Willebrand factor (VWF) gene.
Case: Proband (II-1), male, 56yo, Italian
DiseaseAssertion: VWD1 and Hemophilia A
FamilyInfo: Pedigree in Fig. 1 - Father had VWD1 and Mother had Hemophilia A - parents have normal or higher VWF levels, and normal FVIII/VWF:Ag ratios, as well as a normal bleeding score; 2 daughters carry F8 variant
ParentalGenotype(s): Paternal = NM_000552.4(VWF):c.4751A>G (p.Tyr1584Cys); Maternal = NM_000132.3(F8):c.2167G>A (p.Ala723Thr)
CasePresentingHPOs: HP:0012147, HP:0030129, HP:0030130, HP:0001892, HP:0000421, HP:0000978, HP:0004846, HP:0000225, HP:0005261, HP:0040242
(Reduced quantity of VWF, Impaired ristocetin cofactor assay activity, Impaired von Willebrand factor collagen binding activity, abnormal bleeding, epistaxis, Bruising susceptibility, Prolonged bleeding after surgery, bleeding gums, joint hemorrhage, muscle hemorrhage)
CaseHPOFreeText: blood group = 0, aPTT = 0.56sec, FVIII = 9.8 IU/dL, VWF:Ag = 43.2 IU/dL, VWF:CB = 35.6 IU/dL, VWF:Rco = 42.1 IU/dL, VWF:FVIIIB = 41.3 IU/dL, Platelet VWF:Ag = 58.2 IU/dL, bleeding score = 27
CaseNOTHPOs: HP:0011871
(Impaired RIPA)
CaseNOTHPOFreeText:
CasePreviousTesting:
GenotypingMethod: PCR and direct sequencing of VWF and FVIII
PreviouslyPublished: NA
Gene: VWF
Variant: c.4751A>G (p.Tyr1584Cys)
HGVS: NM_000552.4(VWF):c.4751A>G (p.Tyr1584Cys)
ClinVarID: 310; https://www.ncbi.nlm.nih.gov/clinvar/variation/310/
CAID: NA
gnomAD: MAF = 0.004024 (519/128972 alleles, 4 homozygotes) in European (non-Finnish) population
MultipleGeneVariants:
Gene: F8
Variant: c.2167G>A (p.Ala723Thr)
HGVS: NM_000132.3(F8):c.2167G>A (p.Ala723Thr)
ClinVarID: 10246; https://www.ncbi.nlm.nih.gov/clinvar/variation/10246/
CAid: NA
gnomAD: MAF = 0.00005257 (1/19022 alleles, 1 hemizygote) in South Asian population
Purification of botrocetin from Bothrops jararaca venom. Analysis of the botrocetin-mediated interaction between von Willebrand factor and the human platelet membrane glycoprotein Ib-IX complex
PMID: 2557900
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
Characterisation of mutations and molecular studies of type 2 von Willebrand disease
PMID: 23179108
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
IPType 1 VWDc.7464C>T11A1>3009635Normal multimer size distribution*
Case: Female, Caucasian, 11 years at diagnosis
DiseaseAssertion: VWD1
FamilyInfo: Non-consanguineous family, parents carry no bleeding history but have risk factors (prolonged closure time and modestly decreased VWF:Ag level)
ParentalGenotype(s): Mother has c.7464C>T, Father carries no mutation.
CasePresentingHPOs: HP:0000421, HP:0000978, HP:0001934, HP:0030140, HP:0004846, HP:0006298
CaseHPOFreeText: Cumulative bleeding score of 17, Reduced VWF:Ag of 9IU/dL, VWF:GPIb of 6 I/dL, and factor VIII coagulant activity of 35 IU/dL, prolonged PFA closure time of >300 and reduced concentration of all multimers.
CaseNOTHPOs: None reported
CaseNOTHPOFreeText: Normal multimer size distribution (tested in Agarose gel)
CasePreviousTesting: NA
GenotypingMethod: Direct sequencing of genomic DNA exons 1 to 52, exon/intron boundaries, 5' and 3' UTR, promoter region, and whole intron 44 of VWF. RT-PCR followed by sequencing of cDNA to detect splicing defect due to c.7464C>T.
PreviouslyPublished: PMID:22871923
Gene: VWF
Variant: c.7464C>T
HGVS: NM_000552.5:c.7464C>T (p.Gly2488=)
ClinVarID: 619755
CAID: CA232284628
gnomAD: 0.000008799 MAF in European (non-Finnish) and 0.000008664 MAF in XX. https://gnomad.broadinstitute.org/variant/12-6080849-G-A
7 M/34 <1 3 No 13 c.6551G>Ca/? p.C2184Sa/? 37/? Heterozygous
Case: 7, M, 34, 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: 13
CaseNotHPOs: n/a
CaseNotHPOFreeText: Anti-VWF alloantibodies: no
CasePreviousTesting: n/a
Gene: VWF
Variant:
c.6551G>C (p.Cys2184Ser), Exon 37, D4 domain
Compound Heterozygous
Note: The second mutant allele is unknown
A novel type 2N VWF gene mutation : a case report
PMID: 30036281<br /> Gene: VWF<br /> Disease: von Willebrand disease<br /> MonDO: 0015631<br /> HGNCID:
von Willebrand disease type B: a missense mutation selectively abolishes ristocetin-induced von Willebrand factor binding to platelet glycoprotein Ib.
PMID: 1409710
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
p.R1374C
Case: p.R1374C, Male, Age 39, Caucasian
Disease Assertion: VWD2M
FamilyInfo: 25 family members tested, 1 with high bleeding score, some affected by VWD (number not defined)
Parental Genotype: Not listed
CasePresentingHPOs:
CaseHPOFreeText: VWF:RCo 12 IU/dL, VWF:GPIbM 18 U/dL, VWF:CB3 19 IU/dL, VWF:CB4 14 U/dL, VWF:RCo/VWF:Ag ratio 0.55
CaseNotHPOs: HP:0040240
(Increased Ratio of VWF Propeptide to VWF antigen)
CaseNotHPOFreeText:bleeding score 2, normal multimer distribution,VWF:Ag 22 IU/dL
Protein Expression:
CasePreviousTesting: VWF sequencing
Gene: VWF
Variant: NM_000552.4(VWF):c.4120C>T (p.Arg1374Cys)
ClinVar: 100329 ClinVarID
CAID: CA228539
gnomAD: MAF of 0.000008824 (1/113322 alleles) in the European (non-Finnish) population.
Role of calcium in regulating the intra- and extracellular cleavage of von Willebrand factor by the protease ADAMTS13
PMID: 29296853
Gene: VWF
HGNCID: 12726
II2
Proband: Mazurier_II2
AgeAtReport: 20yo female
HPO: HP:0000421, HP:0002248, hematoma but did not specify spontaneous and/or frequent
Labs: 4 measurements taken for the same proband so values are a range: FVIII:C 4-10 IU/dL, VWF:Ag 30-53 IU/dL, FVIII:Ag 4-8 IU/dL, VWF:FVIIIB absent
Variant: C1060R - NM_000552.5:c.3178T>C (maternal)
Variant: Y357X - NM_000552.5:c.1071C>A (paternal)
CAID: CA114176
CAID: CA114174
A feline orthologue of the human MYH7 c.5647G>A (p.(Glu1883Lys)) variant causes hypertrophic cardiomyopathy in a Domestic Shorthair cat
PMID: 31164718
Gene: MYH7
AnimalModel: detection of feline orthologue of NM_000257.2(MYH7):c.5647G>A (p.Glu1883Lys) (ClinVarID: 14121), which was determined to cause HCM in domestic short hair cat
ClinVar: 14121, https://www.ncbi.nlm.nih.gov/clinvar/variation/14121/
gnomAD: 0.00003185, https://gnomad.broadinstitute.org/variant/14-23883224-C-T
Supplementary Table S1 & S2 Proband and Variant Information:
Case41: GT41b, Male, 13 years old, Chinese
DiseaseAssertion: Glanzmann thrombasthenia
FamilyInfo: Affected sister is 41a in this study (See Supplemental Table S1)
ParentalGenotype: N/A
CasePresentingHPOs: HP:0000421, HP:0000978
(Epistaxis, easy bruising)
CaseHPOFreeText: N/A
CaseNotHPOs: N/A
CaseNotHPOsFreeText: N/A
ProteinExpression: Flow cytometry showed <5% expression of αIIbβ3 (See Supplementary Table 1)
PlateletAggregation: Absent platelet aggregation (See Supplementary Table 1)
CasePreviousTesting: Sanger sequencing of ITGA2B and ITGB3
Gene: ITGA2B
Variant: NM_000419.3:c.91del (p.Ala31Profs2) and NM_000419.3:c.2915dup (p.Leu973Alafs63)
LegacyVariant: N/A
ClinVar: N/A
CAiD: CA913203486 and CA8602531
gnomAD: MAF in the East Asian population is 0.0001088 http://gnomad.broadinstitute.org/variant/17-42452054-C-CG
Supplementary Table S1 & S2 Proband and Variant Information:
Case72: GT76, Male, 54 years old, French
DiseaseAssertion: Glanzmann thrombasthenia
FamilyInfo: N/A
ParentalGenotype: N/A
CasePresentingHPOs: HP:0002239, HP:0032551
(Gi bleeding, hemorrhoids)
CaseHPOFreeText: Moderate bleeding syndrome
CaseNotHPOs: N/A
CaseNotHPOsFreeText: N/A
ProteinExpression: Type unknown for this proband
PlateletAggregation: Absent platelet aggregation (See Supplementary Table 1)
CasePreviousTesting: Sanger sequencing of ITGA2B and ITGB3
Gene: ITGA2B
Variant: NM_000419.3:c.2421G>A (p.Trp807Ter)
LegacyVariant: N/A
ClinVar: N/A
CAiD: CA399796017
gnomAD: N/A
Supplementary Table S1 & S2 Proband and Variant Information:
Case8: GT9, Male, 86, French
DiseaseAssertion: Glanzmann thrombasthenia
FamilyInfo: N/A
ParentalGenotype: N/A
CasePresentingHPOs: HP:0000421
(Epistaxis)
CaseHPOFreeText: Moderate mucocutaneous bleeding
CaseNotHPOs: N/A
CaseNotHPOsFreeText: N/A
ProteinExpression: Flow cytometry showed 10-20% expression of αIIbβ3 (See Supplementary Table 1)
PlateletAggregation: Absent platelet aggregation (See Supplementary Table 1)
CasePreviousTesting: Sanger sequencing of ITGA2B and ITGB3
Gene: ITGB3
Variant: NM_000212.2:c.665T>C (p.Leu222Pro) and NM_000212.2:c.1871G>A (p.Cys624Tyr)
LegacyVariant: N/A
ClinVar: N/A
CAiD: CA291224887 and CA400032726
gnomAD: MAF in the European (non-Finnish) population 0.00006482 http://gnomad.broadinstitute.org/variant/17-45363676-T-C
Supplementary Table S1 & S2 Proband and Variant Information:
Case42: GT42, Male, 15 years old, Egyptian
DiseaseAssertion: Glanzmann thrombasthenia
FamilyInfo: N/A
ParentalGenotype: N/A
CasePresentingHPOs: HP:0012541, HP:0002239, HP:0031364, HP:0030137
(Cephalohematoma, GI bleeding, ecchymosis, prolonged bleeding after circumcision)
CaseHPOFreeText: N/A
CaseNotHPOs: N/A
CaseNotHPOsFreeText: N/A
ProteinExpression: Flow cytometry showed <5% expression of αIIbβ3 (See Supplementary Table 1)
PlateletAggregation: Absent platelet aggregation (See Supplementary Table 1)
CasePreviousTesting: Sanger sequencing of ITGA2B and ITGB3
Gene: ITGA2B
Variant: NM_000419.3:c.2148dup (p.Leu717Alafs*3)
LegacyVariant: N/A
ClinVar: N/A
CAiD: CA915940304
gnomAD: N/A
GT-03
Case3: (GT-03) Male, age or ethnicity not specified
DiseaseAssertion: Glanzmann thrombasthenia
FamilyInfo: Probands 1-9 are related to GT-03 see Table 1
ParentalGenotype: Parents may be included in Table 1; however, not specified so no information
CasePresentingHPOs: N/A
CaseHPOFreeText: Bleeding severity: N/A (See Supplemental Table 3)
CaseNotHPOs: N/A
CaseNotHPOsFreeText: N/A
ProteinExpression: Flow cytometry performed and CD41 and CD61 not observed (See Supplementary Table 3)
PlateletAggregation: Minimal information (See Supplementary Table 3)
CasePreviousTesting: DNA was extracted from peripheral blood samples from patients and family members, and Sanger sequencing and PCR was performed. Samples were processed for targeted sequencing using the available SHGp heme panel of 393 genes.
Gene: ITGA2B
Variant: NM_000419.3:c.1210+5G>A
LegacyVariant: N/A
ClinVar: N/A
CAiD: CA915940251
gnomAD: N/A
GT-31
Case26: (GT-31) Female, age or ethnicity not specified
DiseaseAssertion: Glanzmann thrombasthenia
FamilyInfo: Proband GT31-GT34 are related to GT31
ParentalGenotype: N/A
CasePresentingHPOs: N/A
CaseHPOFreeText: Bleeding severity: Information not available for this proband (See Supplementary Table 3)
CaseNotHPOs: N/A
CaseNotHPOsFreeText: N/A
ProteinExpression: Flow cytometry performed and CD41 and CD61 were observed (See Supplementary Table 3)
PlateletAggregation: Minimal information (See Supplementary Table 3)
CasePreviousTesting: DNA was extracted from peripheral blood samples from patients and family members, and Sanger sequencing and PCR was performed. Samples were processed for targeted sequencing using the available SHGp heme panel of 393 genes.
Gene: ITGB3
Variant: NM_000212.2:c.2113del (p.Leu705Cysfs*4)
LegacyVariant: N/A
ClinVar: N/A
CAiD: CA8623443
gnomAD: MAF in the East Asian population is 0.0001087 http://gnomad.broadinstitute.org/variant/17-45380183-TC-T
GT-57
Case46: (GT-57) Male, age or ethnicity not specified
DiseaseAssertion: Glanzmann thrombasthenia
FamilyInfo: N/A
ParentalGenotype: N/A
CasePresentingHPOs: N/A
CaseHPOFreeText: Bleeding severity: Information not available (See Supplementary Table 3)
CaseNotHPOs: N/A
CaseNotHPOsFreeText: N/A
ProteinExpression: Flow cytometry performed and CD41 and CD61 were observed (See Supplementary Table 3)
PlateletAggregation: Minimal information (See Supplementary Table 3)
CasePreviousTesting: DNA was extracted from peripheral blood samples from patients and family members, and Sanger sequencing and PCR was performed. Samples were processed for targeted sequencing using the available SHGp heme panel of 393 genes.
Gene: ITGB3
Variant: NM_000212.2:c.2113del (p.Leu705Cysfs*4)
LegacyVariant: N/A
ClinVar: N/A
CAiD: CA8623443
gnomAD: MAF in East Asian population: 0.0001087 http://gnomad.broadinstitute.org/variant/17-45380183-TC-T
GT-4
Case4: GT-4, gender, age, ethnicity not specified
DiseaseAssertion: Glanzmann thrombasthenia type I
FamilyInfo: N/A
ParentalGenotype: Segregation analysis confirmed the presence of heterozygous mutations in carrier parents
CasePresentingHPOs: N/A
CaseHPOFreeText: Article mentions patients presented with variable bleeding diathesis and Table 1 shows the several phenotypes that were seen among the cohort of 13 patients in this study (this article does not state a specific bleeding phenotype for each proband) "Most of the patients had gross blood loss due to epistaxis (54%), cutaneous bleeding (58%) and menorrhagia (100% of women), while other common symptoms (oral cavity, gastrointestinal, following dental extraction or mild injuries, postpartum, or hematomas) were in general milder."
CaseNotHPOs: N/A
CaseNotHPOsFreeText: N/A
ProteinExpression: Flow cytometry showed αIIbβ3 expression to be <5%
PlateletAggregation: Article mentions the disorder was indentified by platelet testing consisting in severely impaired aggregation in response to all physiological agonists and also TMA (See Table 4). Ristocetin-induced platelet aggregation was normal or reduced to some extent.
CasePreviousTesting: To detect mutations in ITGA2B or ITGB3, total RNA from peripheral blood was used for cDNA synthesis for RT-PCR. Using specific oligonucleotides and conditions, they amplified and sequenced ITGA2B and ITGB3 by Sanger sequencing, and every mutation found in cDNA was confirmed on DNA samples
Gene: ITGB3
Variant: M_000212.2:c.647A>G (p.Tyr216Cys)
LegacyVariant: (p.Tyr190Cys)
ClinVar: N/A
CAiD: CA400023432
gnomAD: N/A
GT-3
Case3: GT-3, gender, age, ethnicity not specified
DiseaseAssertion: Glanzmann thrombasthenia type II
FamilyInfo: N/A
ParentalGenotype: Segregation analysis confirmed the presence of heterozygous mutations in carrier parents
CasePresentingHPOs: N/A
CaseHPOFreeText: Article mentions patients presented with variable bleeding diathesis and Table 1 shows the several phenotypes that were seen among the cohort of 13 patients in this study (this article does not state a specific bleeding phenotype for each proband) "Most of the patients had gross blood loss due to epistaxis (54%), cutaneous bleeding (58%) and menorrhagia (100% of women), while other common symptoms (oral cavity, gastrointestinal, following dental extraction or mild injuries, postpartum, or hematomas) were in general milder."
CaseNotHPOs: N/A
CaseNotHPOsFreeText: N/A
ProteinExpression: Flow cytometry showed αIIbβ3 expression between 5% and 20%
PlateletAggregation: Article mentions the disorder was indentified by platelet testing consisting in severely impaired aggregation in response to all physiological agonists and also TMA (See Table 4). Ristocetin-induced platelet aggregation was normal or reduced to some extent.
CasePreviousTesting: To detect mutations in ITGA2B or ITGB3, total RNA from peripheral blood was used for cDNA synthesis for RT-PCR. Using specific oligonucleotides and conditions, they amplified and sequenced ITGA2B and ITGB3 by Sanger sequencing, and every mutation found in cDNA was confirmed on DNA samples
Gene: ITGA2B
Variant: NM_000419.3:c.2113T>C (p.Cys705Arg)
LegacyVariant: (p.Cys674Arg) +31=705
ClinVar: N/A
CAiD: CA8602816
gnomAD: MAF in European (non-Finnish) population is 0.000008792 http://gnomad.broadinstitute.org/variant/17-42455140-A-G
PreviouslyPublished PMID: 9920835
Case report The patient is a 5‐year‐old son of non‐consaguinous Swiss parents
Case1: Male, 5 years old, Swiss
DiseaseAssertion: Glanzmann thrombasthenia
FamilyInfo: Family pedigree provided in Figure 1- blood samples for the study were obtained from the patient, his parents and 5 other members of his family and none of the other studied family members have experienced abnormal bleeding
ParentalGenotype: Studied and no mutation detected
CasePresentingHPOs: N/A
CaseHPOFreeText: Frequent mucocutaneous bleeding with transfusion being required shortly after birth
CaseNotHPOs: N/A
CaseNotHPOFreeText: N/A
ProteinExpression: <2% of the normal platelet content of GPIIb-IIIa as determined by flow cytometry
PlateletAggregation: Absence of platelet aggregation in response to ADP, epinephrine, thrombin and collagen; however, normal platelet agglutination with ristocetin
CasePreviousTesting: Using a PCR‐SSCP procedure and direct sequence analysis of PCR‐amplified DNA fragments, we have examined all exons and splice sites of the GPIIb and GPIIIa genes
Gene: ITGA2B
Variant: NM_000419.3:c.1063G>A (p.Glu355Lys) and NM_000419.3:c.1787T>C (p.Ile596Thr)
LegacyVariant: (p.Glu324Lys) and (p.Ile565Thr)
ClinVar: 2899 and 2900, respectively
CAiD: CA115844 and CA115846, respectively
gnomAD: MAF in the European (non-Finnish) population is 0.00001978 https://gnomad.broadinstitute.org/variant/17-42461008-C-T and the MAF in the European (non-Finnish) population is 0.0001325 https://gnomad.broadinstitute.org/variant/17-42457148-A-G
Different biochemical expression pattern of platelet surface glycoproteins suggests molecular diversity of Glanzmann's thrombasthenia in Iran.
PMID: 23912132
Genes: ITGA2B and ITGB3
HGNC: 6138 and 6156
NoEvidence: This article discusses GT; however no probands with variants in ITGA2B and ITGB3 are discussed.
Note: Annotated on the PubMed Abstract because the journal this article is in, Blood Coagulation and Fibrinolysis does not work properly.
LeuFC
Case10: Patient FC
DiseaseAssertion: Glanzmann thrombasthenia
FamilyInfo: N/A
ParentalGenotype: N/A
CasePresentingHPOs:
CaseHPOFreeText: N/A
CaseNotHPOs: N/A
CaseNotHPOsFreeText: N/A
ProteinExpression: N/A
PlateletAggregation: N/A
CasePreviousTesting: The amplification of DNA fragments using PCR and their electrophoretic migration through a denaturing gradient was used to scan the entire coding region, splice site junctions and promoter regions of the GPIIb and GPIIIa genes for all 20 patients in this study
Gene: ITGA2B
Variant: NM_000419.3:c.2540T>C (p.Leu847Pro)
LegacyVariant: (p.Leu816Pro)
ClinVar: N/A
CAiD: CA399794666
gnomAD: MAF in the African population is 0.00006443 https://gnomad.broadinstitute.org/variant/17-42453262-A-G
LeuSsab
Case12: Patient Ssab
DiseaseAssertion: Glanzmann thrombasthenia
FamilyInfo: N/A
ParentalGenotype: N/A
CasePresentingHPOs: N/A
CaseHPOFreeText: N/A
CaseNotHPOs: N/A
CaseNotHPOsFreeText: N/A
ProteinExpression: N/A
PlateletAggregation: N/A
CasePreviousTesting: The amplification of DNA fragments using PCR and their electrophoretic migration through a denaturing gradient was used to scan the entire coding region, splice site junctions and promoter regions of the GPIIb and GPIIIa genes for all 20 patients in this study
Gene: ITGB3
Variant: NM_000212.2:c.1955A>T (p.His652Leu)
LegacyVariant: (p.His626Leu)
ClinVar: N/A
CAiD: CA400032927
gnomAD: N/A
28TG
Case16: Patient TG
DiseaseAssertion: Glanzmann thrombasthenia
FamilyInfo: N/A
ParentalGenotype: N/A
CasePresentingHPOs: N/A
CaseHPOFreeText: N/A
CaseNotHPOs: N/A
CaseNotHPOsFreeText: N/A
ProteinExpression: N/A
PlateletAggregation: N/A
CasePreviousTesting: The amplification of DNA fragments using PCR and their electrophoretic migration through a denaturing gradient was used to scan the entire coding region, splice site junctions and promoter regions of the GPIIb and GPIIIa genes for all 20 patients in this study
Gene: ITGA2B
Variant: NM_000419.3:c.3061-1G>A
LegacyVariant: N/A
ClinVar: N/A
CAiD: CA399787972
gnomAD: N/A
Supplementary Table S1:
Case2: GT3, French, age and gender not specified
DiseaseAssertion: Glanzmann thrombasthenia type I
FamilyInfo: N/A
ParentalGenotype: N/A
CasePresentingHPOs: N/A
CaseHPOFreeText: All patients had a life-long history of mucocutaneous bleeding
CaseNotHPOs: N/A
CaseNotHPOsFreeText: N/A
ProteinExpression: All patients in this study met the clinical and platelet function requirements for GT-- this includes an absent or strongly reduced expression of alphaIIbBeta3 in platelets
PlateletAggregation: All patients in this study met the clinical and platelet function requirements for GT-- this includes absent or severely reduced platelet aggregation with at least three physiological agonists
CasePreviousTesting: Sanger sequencing was performed. Sanger sequencing ensured coverage of all exons and splice sties of the ITGA2B and ITGB3 genes and extended 300-500 bp into the introns as well as including the UTR. They sequenced 416 bp upstream of the ITGA2B promoter and 463 bp upstream of the ITGB3 promoter. In total they sequenced 51.2% of the ITGA2B gene and 19.4% of the larger ITGB3 gene
Gene: ITGB3
Variant: NM_000212.2:c.353T>A (p.Leu118His) and NM_000212.2:c.709_710del (p.Ser237Cysfs*13) and NM_000212.2:c.1732G>A (p.Asp578Asn)
LegacyVariant: N/A
ClinVar: N/A
CAiD: CA291224511 (p.Leu118His) and CA8623029 (p.Ser237Cysfs*13) and CA8623343 (p.Asp578Asn)
gnomAD: MAF in the European (non-Finnish) population in (p.Ser237Cysfs*13) is 0.00001796 https://gnomad.broadinstitute.org/variant/17-45363717-CAG-C and MAF in the Other population for (p.Asp578Asn) is 0.0008149 https://gnomad.broadinstitute.org/variant/17-45376715-G-A
Supplementary Table S1:
Case58: GT, French, gender and age are not specified
DiseaseAssertion: Glanzmann thrombasthenia type I
FamilyInfo: N/A
ParentalGenotype: N/A
CasePresentingHPOs: N/A
CaseHPOFreeText: All patients had a life-long history of mucocutaneous bleeding
CaseNotHPOs: N/A
CaseNotHPOsFreeText: N/A
ProteinExpression: All patients in this study met the clinical and platelet function requirements for GT-- this includes an absent or strongly reduced expression of alphaIIbBeta3 in platelets
PlateletAggregation: All patients in this study met the clinical and platelet function requirements for GT-- this includes absent or severely reduced platelet aggregation with at least three physiological agonists
CasePreviousTesting: Sanger sequencing was performed. Sanger sequencing ensured coverage of all exons and splice sties of the ITGA2B and ITGB3 genes and extended 300-500 bp into the introns as well as including the UTR. They sequenced 416 bp upstream of the ITGA2B promoter and 463 bp upstream of the ITGB3 promoter. In total they sequenced 51.2% of the ITGA2B gene and 19.4% of the larger ITGB3 gene
Gene: ITGA2B
Variant: NM_000419.3:c.1413C>G (p.Tyr471Ter) and other other variant is stated as "LR deletion" so I will note it as an Unknown Variant
LegacyVariant: N/A
ClinVar: N/A
CAiD: CA290950376
gnomAD: MAF in the European (non-Finnish) population is 0.000008791 https://gnomad.broadinstitute.org/variant/17-42457994-G-C
Supplementary Table S1:
Case3: GT4, French Gypsy, gender and age not specified
DiseaseAssertion: Glanzmann thrombasthenia type I
FamilyInfo: N/A
ParentalGenotype: N/A
CasePresentingHPOs: N/A
CaseHPOFreeText: All patients had a life-long history of mucocutaneous bleeding
CaseNotHPOs: N/A
CaseNotHPOsFreeText: N/A
ProteinExpression: All patients in this study met the clinical and platelet function requirements for GT-- this includes an absent or strongly reduced expression of alphaIIbBeta3 in platelets
PlateletAggregation: All patients in this study met the clinical and platelet function requirements for GT-- this includes absent or severely reduced platelet aggregation with at least three physiological agonists
CasePreviousTesting: Sanger sequencing was performed. Sanger sequencing ensured coverage of all exons and splice sties of the ITGA2B and ITGB3 genes and extended 300-500 bp into the introns as well as including the UTR. They sequenced 416 bp upstream of the ITGA2B promoter and 463 bp upstream of the ITGB3 promoter. In total they sequenced 51.2% of the ITGA2B gene and 19.4% of the larger ITGB3 gene
Gene: ITGA2B
Variant: NM_000419.3:c.1544+1G>A (p.Val513Leufs*71)
LegacyVariant: N/A
ClinVar: 2895
CAiD: CA10575473
gnomAD: N/A
Supplementary Table S1:
Case57: GT67, French, gender and age are not specified
DiseaseAssertion: Glanzmann thrombasthenia type I
FamilyInfo: N/A
ParentalGenotype: N/A
CasePresentingHPOs: N/A
CaseHPOFreeText: All patients had a life-long history of mucocutaneous bleeding
CaseNotHPOs: N/A
CaseNotHPOsFreeText: N/A
ProteinExpression: All patients in this study met the clinical and platelet function requirements for GT-- this includes an absent or strongly reduced expression of alphaIIbBeta3 in platelets
PlateletAggregation: All patients in this study met the clinical and platelet function requirements for GT-- this includes absent or severely reduced platelet aggregation with at least three physiological agonists
CasePreviousTesting: Sanger sequencing was performed. Sanger sequencing ensured coverage of all exons and splice sties of the ITGA2B and ITGB3 genes and extended 300-500 bp into the introns as well as including the UTR. They sequenced 416 bp upstream of the ITGA2B promoter and 463 bp upstream of the ITGB3 promoter. In total they sequenced 51.2% of the ITGA2B gene and 19.4% of the larger ITGB3 gene
Gene: ITGA2B
Variant: NM_000419.3:c.1440-13_1440-1del (p.Arg480SerfsTer106) and NM_000419.3:c.1618C>T (p.Gln540Ter)
LegacyVariant: N/A
ClinVar: N/A
CAiD: CA913184940 and CA399802411
gnomAD: MAF in the African population is 0.000 https://gnomad.broadinstitute.org/variant/17-42457504-G-A
Supplementary Table S1:
Case25: GT28, French/Syrian, gender and age not specified
DiseaseAssertion: Glanzmann thrombasthenia type I
FamilyInfo: N/A
ParentalGenotype: N/A
CasePresentingHPOs: N/A
CaseHPOFreeText: All patients had a life-long history of mucocutaneous bleeding
CaseNotHPOs: N/A
CaseNotHPOsFreeText: N/A
ProteinExpression: All patients in this study met the clinical and platelet function requirements for GT-- this includes an absent or strongly reduced expression of alphaIIbBeta3 in platelets
PlateletAggregation: All patients in this study met the clinical and platelet function requirements for GT-- this includes absent or severely reduced platelet aggregation with at least three physiological agonists
CasePreviousTesting: Sanger sequencing was performed. Sanger sequencing ensured coverage of all exons and splice sties of the ITGA2B and ITGB3 genes and extended 300-500 bp into the introns as well as including the UTR. They sequenced 416 bp upstream of the ITGA2B promoter and 463 bp upstream of the ITGB3 promoter. In total they sequenced 51.2% of the ITGA2B gene and 19.4% of the larger ITGB3 gene
Gene: ITGA2B
Variant: All the supplemental table says is "LR dup" no other information is provided here (I will note this as Unregistered-please feel free to change this by commenting and letting me know)
LegacyVariant: N/A
ClinVar: N/A
CAiD: N/A
gnomAD: N/A
Primary arrest of circulating platelets on collagen involves phosphorylationof Syk, cortactin and focal adhesion kinase : studies under flow conditions
PMID: 11988077
Gene: ITGA2B and/or ITGB3
HGNC: 6138 and 6156
NoEvidence: This article does not mention GT probands with variants in ITGA2B and/or ITGB3 therefore there is insufficient evidence. However, the present study used blood samples from 2 patients with GT; therefore, the gene name and HGNC are included in this annotation
A large alteration in the human plateletglycoprotein Ilia (integrin p\) geneassociated with Glanzmann'sthrombasthenia
PMID: 8111390
Gene: ITGA2B
HGNC: 6138
Improving selection of αIIbβ3-binding phage antibodies with increased reactivity derived from immunized donors
PMID: 14499243
Gene: ITGA2B and/or ITGB3
HGNC: 6138 and 6156
InsufficientEvidence: This mentions GT case reports; however, no variants in ITGA2B and/or ITGB3 are mentioned in this patient; therefore, we have insufficient evidence
Supplementary Tables 1 and 2 combined information:
Case18: Gt18, Male, 20 years old
DiseaseAssertion: Glanzmann thrombasthenia
FamilyInfo: Available per Table 1; however, very minimal information
ParentalGenotype: Parents are consanguineous, no other genotype information available
CasePresentingHPOs: HP:0000421
(Epistaxis)
CaseHPOFreeText: N/A
CaseNotHPOs: N/A
CaseNotHPOsFreeText: N/A
ProteinExpression: Showed <5% of αIIbβ3 expression measured by flow cytometry
PlateletAggregation: Platelet aggregation showed no response to ADP and collagen but normal response to ristocetin
CasePreviousTesting: All exons from ITGA2B and ITGB3 genes were amplified by PCR using intronic primers. DNA sequencing was determined by Sanger sequencing.
Gene: ITGA2B
Variant: NM_000419.3:c.2671C>T (p.Gln891Ter)
LegacyVariant: N/A
ClinVar: N/A
CAiD: CA8602626 (p.Gln891Ter)
gnomAD: N/A
Supplementary Tables 1 and 2 combined information:
Case36: GT36, Male, 8 years old
DiseaseAssertion: Glanzmann thrombasthenia
FamilyInfo: Not available per supplementary table 1
ParentalGenotype: Parents are not consanguineous, no other genotype information available
CasePresentingHPOs: HP:0000978, HP:0000979, HP:0031364, HP:0000421, HP:0002239
(Bruising, purpura, ecchymosis, epistaxis, gastrointestinal bleeding)
CaseHPOFreeText: Intestinal intrussusception
CaseNotHPOs: N/A
CaseNotHPOsFreeText: N/A
ProteinExpression: Showed <5% of αIIbβ3 expression measured by flow cytometry
PlateletAggregation: Platelet aggregation showed no response to ADP and collagen but normal response to ristocetin
CasePreviousTesting: All exons from ITGA2B and ITGB3 genes were amplified by PCR using intronic primers. DNA sequencing was determined by Sanger sequencing.
Gene: ITGB3
Variant: NM_000212.2:c.1913+5G>T (c.1913+5G>T)
LegacyVariant: N/A
ClinVar: N/A
CAiD: CA8623377
gnomAD: MAF in the East Asian population 0.0001633 https://gnomad.broadinstitute.org/variant/17-45376901-G-T
Supplementary Tables 1 and 2 combined information:
Case27: GT27, Male, 29 years old
DiseaseAssertion: Glanzmann thrombasthenia
FamilyInfo: Available per Table 1; however, very minimal information
ParentalGenotype: Parents are not consanguineous, no other genotype information available
CasePresentingHPOs: HP:0000978, HP:0000979, HP:0031364
(Bruising, purpura, ecchymosis)
CaseHPOFreeText: Post traumatic hemorrhage
CaseNotHPOs: N/A
CaseNotHPOsFreeText: N/A
ProteinExpression: Showed <5% of αIIbβ3 expression measured by flow cytometry
PlateletAggregation: Platelet aggregation showed no response to ADP and collagen but normal response to ristocetin
CasePreviousTesting: All exons from ITGA2B and ITGB3 genes were amplified by PCR using intronic primers. DNA sequencing was determined by Sanger sequencing.
Gene: ITGA2B
Variant: NM_000419.3:c.2333A>C (p.Gln778Pro) This article is not completed-Meera
LegacyVariant: N/A
ClinVar: 225393
CAiD: CA290947544
gnomAD: MAF in East Asian population: 0.0001087 https://gnomad.broadinstitute.org/variant/17-42453691-T-G
Supplementary Tables 1 and 2 combined information:
Case10: GT10, Male, 8 years old
DiseaseAssertion: Glanzmann thrombasthenia
FamilyInfo: Not available per supplementary table 1
ParentalGenotype: Parents are not consanguineous, no other genotype information available
CasePresentingHPOs: HP:0000978, HP:0000979, HP:0031364, HP:0000421
(Bruising, purpura, ecchymosis, epistaxis)
CaseHPOFreeText: N/A
CaseNotHPOs: N/A
CaseNotHPOsFreeText: N/A
ProteinExpression: Showed <5% of αIIbβ3 expression measured by flow cytometry
PlateletAggregation: Platelet aggregation showed no response to ADP and collagen but normal response to ristocetin
CasePreviousTesting: All exons from ITGA2B and ITGB3 genes were amplified by PCR using intronic primers. DNA sequencing was determined by Sanger sequencing.
Gene: ITGA2B
Variant: NM_000419.3:c.2236G>T (p.Glu746Ter)
LegacyVariant: N/A
ClinVar: N/A
CAiD: CA399798321
gnomAD: N/A
Supplementary Tables 1 and 2 combined information:
Case15a: Male, 15 years old, brother to GT15b
DiseaseAssertion: Glanzmann thrombasthenia
FamilyInfo: Available per Table 1, brother to GT15b
ParentalGenotype: Parents are not consanguineous, no other genotype information available
CasePresentingHPOs: HP:0000978, HP:0000979, HP:0031364, HP:0000421, HP:0000225
(Bruising, purpura, ecchymosis, epistaxis, gingival bleeding)
CaseHPOFreeText: N/A
CaseNotHPOs: N/A
CaseNotHPOsFreeText: N/A
ProteinExpression: Showed 10-20% of αIIbβ3 expression measured by flow cytometry
PlateletAggregation: Platelet aggregation showed no response to ADP, a small response to collagen but normal response to ristocetin
CasePreviousTesting: All exons from ITGA2B and ITGB3 genes were amplified by PCR using intronic primers. DNA sequencing was determined by Sanger sequencing.
Gene: ITGB3
Variant: NM_000212.2:c.1525del (p.Gln509Argfs*160) and NM_000212.2:c.1199G>A (p.Cys400Tyr)
LegacyVariant: N/A
ClinVar: 13562 (p.Cys400Tyr)
CAiD: CA915940237 (p.Gln509Argfs*160) and CA123244 (p.Cys400Tyr)
gnomAD: N/A
Supplementary Tables 1 and 2 combined information:
Case1: GT1, Female, 5 years old
DiseaseAssertion: Glanzmann thrombasthenia
FamilyInfo: Not available per supplementary table 1
ParentalGenotype: Parents are not consanguineous, no other genotype information available
CasePresentingHPOs: HP:0000978, HP:0000979, HP:0031364, HP:0000421
(Bruising, purpura, ecchymosis, epistaxis)
CaseHPOFreeText: N/A
CaseNotHPOs: N/A
CaseNotHPOsFreeText: N/A
ProteinExpression: Showed <5% of αIIbβ3 expression measured by flow cytometry
PlateletAggregation: Platelet aggregation showed no response to ADP and collagen but normal response to ristocetin
CasePreviousTesting: All exons from ITGA2B and ITGB3 genes were amplified by PCR using intronic primers. DNA sequencing was determined by Sanger sequencing.
Gene: ITGA2B
Variant: NM_000419.3:c.1051C>T (p.Arg351Ter) and NM_000419.3:c.2029G>A (p.Glu677Lys)
LegacyVariant: N/A
ClinVar: N/A
CAiD: CA290954030 (p.Arg351Ter) and CA399800002 (p.Glu677Lys)
gnomAD: N/A
GT62
Case21: (GT62) Gender, age and ethnicity are not specified
DiseaseAssertion: Glanzmann thrombasthenia
FamilyInfo: N/A
ParentalGenotype: N/A
CasePresentingHPOs:
CaseHPOFreeText: Inclusion criteria were patients with a history of mucocutaneous bleeding (Figure 1 shows a bar diagram of all the clinical manifestations in the patient cohort in this article)
CaseNotHPOs: N/A
ProteinExpression: Platelet receptor alphaIIbbeta3 protein was analyzed by flow cytometry followed by western blotting
Platelet Aggregation: Inclusion criteria for probands was absent or reduced platelet aggregation with agonists such as ADP, adrenaline, arachidonic acid, and collagen (no mention of ristocetin here-- this article does not tell us the specific aggregation for each proband in the paper)
CasePreviousTesting: For mutation analysis of ITGA2B and ITGB3 genes, DNA extraction from whole blood, PCR, heteroduplex PCR followed by CSGE and DNA sequencing were performed. All 30 exons of ITGA2B and 15 exons of ITGB3, as well as their promoters, were analyzed by CSGE following heteroduplex PCR.
Gene: ITGA2B
Variant: NM_000419.3:c.1559del
LegacyVariant: N/A
ClinVar: N/A
CAiD: CA915940684
gnomAD N/A
1
Case1: Gender or age not specified, Thai ethnicity
DiseaseAssertion: Glanzmann thrombasthenia
FamilyInfo: N/A
ParentalGenotype: Father: p.Arg584Ter/WT and Mother: p.Leu973Alafs*63/WT (See Table 2)
Note: No parental consanguinity
CasePresentingHPOs: N/A
CaseHPOFreeText: The article does not mention specific bleeding phenotypes for each of the 4 probands in the article, rather, there is a general statement that says: "The common presentations included recurrent epistaxis, bleeding in oral cavity, and easy-bruising spontaneously or after trauma"
CaseNotHPOs: N/A
CaseNotHPOsFreeText: N/A
ProteinEpression: General statement from the article that states that flow cytometry to assess the surface GPIIb/IIIa complex showed reduced expression for all probands.
PlateletAggregation: The platelet aggregation test was typically defective with all physiological agonists except ristocetin, for all patients.
CasePreviousTesting: Whole exome sequencing was performed on the 30 exons of ITGA2B and 15 exons in ITGB3. PCR and direct sequencing were then performed in the DNA samples of the patients and their available parents to verify the presence of the identified mutations.
Gene: ITGA2B
Variant: NM_000419.3:c.1750C>T (p.Arg584Ter) and NM_000419.3:c.2915dup (p.Leu973Alafs*63)
LegacyVariant: N/A
ClinVar: 2892 (p.Arg584Ter)
CAiD: CA115834 (p.Arg584Ter) and CA8602531 (p.Leu973Alafs*63)
gnomAD: MAF for (p.Arg584Ter) in the East Asian population 0.0002176 http://gnomad.broadinstitute.org/variant/17-42457372-G-A and MAF for (p.Leu973Alafs*63) in the East Asian population 0.0001088 http://gnomad.broadinstitute.org/variant/17-42452054-C-CG
British Journal of HaematoJogy. 1995. 89. 124-130 Platelets with 10% of the normal amount of glycoprotein VI have an impaired response to collagen that results in a mild bleeding tendency
PMID: 7530476
Gene: ITGA2B and/or ITGB3
HGNC: 6138 and 6156
InsufficientEvidence: This mentions a Glanzmann thrombasthenia patient; however, no variants in ITGA2B and/or ITGB3 are mentioned in this patient; therefore, we have insufficient evidence
The propositus (A.C.S.; II.1) in family 1 is a 22-yearold Portuguese girl
Case1: Female, 22 years old, Portuguese
DiseaseAssertion: Glanzmann thrombasthenia
FamilyInfo: Also studied were the probands mother (I.2) father (1.1) and sister (II.2) and only her sister has reported excessive bleeding, although her platelet aggregation tests were normal for all of them (See Fig. 2A)
ParentalGenotype: Parents were heterozygous
CasePresentingHPOs: HP:0000967
(Petechia)
CaseHPOFreeText: Mucocutaneous bleeding
CaseNotHPOs: N/A
CaseNotHPOsFreeText: N/A
ProteinExpression: Western blot expression study shows classic type 1 GT with less than 5% surface expression of aIIb3
PlateletAggregation: Platelet aggregation was absent with physiological agonists but agglutination with ristocetin was normal
CasePreviousTesting: Examined each of the 30 exons of beta3 gene and each of the 15 exons of the aIIb gene for migration changes in PCR-SSCP analysis. Each PCR reaction was controlled by electrophoresis of the amplified fragments on 1.5% agarose gels
Gene: ITGB3
Variant: NM_000212.2:c.1924G>T (p.Glu642Ter)
LegacyVariant: N/A
ClinVar: 13565
CAiD: CA123249
gnomAD: N/A
Modulation of clinical phenotype of Glanzmann's thrombastheniaby thrombogenic mutations
PMID: 19245802
Gene: ITGA2B and/or ITGB3
HGNC: 6138 and 6156
InsufficientEvidence: This article mentions GT patients; however, variants in ITGA2B and ITGB3 are not mentioned
12
Case1: Female, 15, ethnicity not specified
DiseaseAssertion: Glanzmann thrombasthenia
FamilyInfo: N/A
ParentalGenotype: "This mutation was confirmed in the proband and parents."
CasePresentingHPOs: HP:0000225 (Gingival bleeding)
CaseHPOFreeText: Site of bleeding: skin, menstrual
CaseNotHPOs: N/A
CaseNotHPOFreeText: N/A
ProteinExpression: See Table 1 (information provided)
PlateletAggregation: See Table 1 (information provided)
CasePreviousTesting: Screened mutations in ITGA2B and ITGB3 by multiplex polymerase chain reaction (PCR) amplification (MPCR) and conformation-sensitive gel electrophoresis
Gene: ITGB3
Variant: NM_000212.2:c.646T>C (p.Tyr216His)
LegacyVariant: (p.Tyr190His)
ClinVar: N/A
CAiD: CA400023428
gnomAD: N/A
A new multiplex PCR and conformation‐sensitive gel electrophoresis strategy for mutation detection in the platelet glycoprotein αIIb and β3 genes
PMID: 17083650
Gene: ITGA2B and/or ITGB3
HGNC: 6138 and 6156
Patients with the French gypsy mutation
Note that I have clumped these patients together as there is very minimal information provided about each proband --> what is presented is just the fact that they all have the French Gypsy mutation
Cases 19, 20, 21, 22, 23, 24, 25, 26, 27: All have Gypsy mutation and their gender and age are not specified here
DiseaseAssertion: Glanzmann thrombasthenia
FamilyInfo: N/A
ParentalGenotype: N/A
CasePresentingHPOs: N/A
CaseHPOFreeText: N/A
CaseNotHPOs: N/A
CaseNotHPOsFreeText: N/A
ProteinExpression: N/A
PlateletAggregation: N/A
CasePreviousTesting: N/A
Gene: ITGA2B
Variant: NM_000419.3:c.1544+1G>A
LegacyVariant: N/A
ClinVar: 2895
CAiD: CA10575473
gnomAD: N/A
Human platelet alloantigen polymorphism in Glanzmann's thrombasthenia and its impact on the severity of the disease Kanjaksha Ghosh Institute of Immunohematology (ICMR), KEM Hospital, Parel, Mumbai, IndiaSearch for more papers by this author Bipin Kulkarni Institute of Immunohematology (ICMR), KEM Hospital, Parel, Mumbai, IndiaSearch for more papers by this author Sona Nair Institute of Immunohematology (ICMR), KEM Hospital, Parel, Mumbai, IndiaSearch for more papers by this author Shrimati Shetty Institute of Immunohematology (ICMR), KEM Hospital, Parel, Mumbai, IndiaSearch for more papers by this author Dipika Mohanty Institute of Immunohematology (ICMR), KEM Hospital, Parel, Mumbai, IndiaSearch for more papers by this author
PMID: 12406067
Gene: ITGA2B and/or ITGB3
HGNC: 6138 and 6156
InsufficientEvidence: This article does not mention variants in ITGA2B and/or ITGB3 in the probands in this article; therefore, we have insufficient evidence
C560Rβ3 caused platelet integrin αIIbβ3 to Bind Fibrinogen Continuously yet Resulted in a Severe Bleeding Syndrome and Increased Murine Mortality
PMID: 23551977
Gene: ITGA2B and ITGB3
HGNC: 6138 and 6156
InsufficientEvidence: This article talks about a GT variant however in mice, not humans.
Integrins on Rat Osteoclasts: Characterization of Two Monoclonal Antibodies (F4 and F11) to Rat p3
PMID: 1585837
Gene: ITGA2B and ITGB3
HGNC: 6138 and 6156
NoEvidence: This article does not mention Glanzmann thrombasthenia probands with variants in ITGA2B and/or ITGB3; therefore, there is no evidence
P1
Case1: P1, gender, age, ethnicity not specified
DiseaseAssertion: Glanzmann thrombasthenia
FamilyInfo: N/A
ParentalGenotype: N/A
CasePresentingHPOs: N/A
CaseHPOFreeText: Article mentions all patients have a severe bleeding phenotype
CaseNotHPOs: N/A
CaseNotHPOsFreeText: N/A
ProteinExpression: αIIbβ3 expression levels were (undetectable in patient 1)
PlateletAggregation: N/A
CasePreviousTesting: Acknowledgements section mentions acknowledging the Genoscope team for sequencing both ITGA2B and ITGB3 genes of the GT patients in this article
Gene: ITGA2B
Variant: NM_000419.3:c.2148dup (p.Leu717AlafsX3a)
LegacyVariant: N/A
ClinVar: N/A
CAiD: CA915940304
gnomAD: N/A
Effectsofanovellowvolumeresuscitationsolutionsoncoagulationandplateletfunction
PMID: 31042735
Gene: ITGA2B and ITGB3
HGNC 6138 and 6156
NoEvidence: This article does not mention Glanzmann thrombasthenia case reports/probands and variants in ITGA2B and/or ITGB3 are not mentioned.
11CabGT-11
Case11: (Proband CabGT-11) Female, age not specified, Caucasian
DiseaseAssertion: Glanzmann thrombasthenia
FamilyInfo: N/A
ParentalGenotype: N/A
CasePresentingHPOs: N/A
CaseHPOFreeText: N/A
CaseNotHPOs: N/A
ProteinExpression: Flow cytometry showed <5% GPIIb and 20% GPIIIa surface expression
Platelet Aggregation: N/A
CasePreviousTesting: Promoter and exon sequences of aIIb and b3 genes were amplified and directly sequence
Gene: ITGA2B
Variant: NM_000419.3:c.1787T>C (p.Ile596Thr)
LegacyVariant: N/A
ClinVar: 2900
CAiD: CA115846
gnomAD MAF in the European (non-Finnish) population is 0.0001325 https://gnomad.broadinstitute.org/variant/17-42457148-A-G
5CabGT-5
Case5: (Proband CabGT-5), Female, Caucasian
DiseaseAssertion: Glanzmann thrombasthenia
FamilyInfo: N/A
ParentalGenotype: N/A
CasePresentingHPOs: N/A
CaseHPOFreeText: N/A
CaseNotHPOs: N/A
ProteinExpression: Flow cytometry showed <5% of both GPIIIa and GPIIb
Platelet Aggregation: N/A
CasePreviousTesting: Promoter and exon sequences of aIIb and b3 genes were amplified and directly sequence
Gene: ITGA2B
Variant: c.1442-13_1442-1del, and Table 1 notes that the second mutation was not found
LegacyVariant: N/A
ClinVar: N/A
CAiD: N/A
gnomAD N/A
patient (GT-2)
Case2: GT-2, gender, age, ethnicity not specified
DiseaseAssertion: Glanzmann thrombasthenia
FamilyInfo: N/A
ParentalGenotype: N/A
CasePresentingHPOs: HP:0000979
(Purpura)
CaseHPOFreeText: Severe bleeding syndrome, frequent hematomas, has a history of blood transfusion with platelet concentrates
CaseNotHPOs: N/A
CaseNotHPOsFreeText: N/A
ProteinExpression: Flow cytometry showed that this patient lacked integrin αIIbβ3 expression
PlateletAggregation: Platelets failed to aggregate with physical agonists
CasePreviousTesting: N/A
Gene: ITGB3
Variant:NM_000212.2:c.940G>T (p.Asp314Tyr)
LegacyVariant: N/A
ClinVar: N/A
CAiD: CA400025612
gnomAD: N/A
F3P1
Case3: Patient F3P1, Male, 26 years old, Tunisian
DiseaseAssertion: Glanzmann thrombasthenia type I
FamilyInfo: Table 1 states there is a family history of bleeding (we have minimal to no specific info on this)
ParentalGenotype: Mother and father are heterozygous for this mutation
CasePresentingHPOs: HP:0000225, HP:0004406, HP:0000978,HP:0000790, HP:0002239
(Gingival bleeding, recurrent epistaxis, easy bruising, hematuria, GI bleeding)
CaseHPOFreeText: N/A
CaseNotHPOs: N/A
CaseNotHPOsFreeText: N/A
ProteinExpression: N/A
PlateletAggregation: GT diagnosis was based on absent platelet aggregation induced by ADP, collagen, and TRAP and subnormal or cyclical ristocetin induced agglutination
CasePreviousTesting: Using PCR they successfully amplified 20 DNA fragments for the ITGA2B gene (covering more than 48% of the ITGA2B gene constituting 30 exons) and15 DNA fragments of theITGB3gene (covering 15 exons)
Gene: ITGA2B
Variant: NM_000419.3:c.2702C>A (p.Ser901X) another variant this patient has is g.13944G>A --> I am noting this as Unknown Variant as I will need guidance curating this one
LegacyVariant: N/A
ClinVar: N/A
CAiD: CA399792888
gnomAD: N/A
Mutations in theb3 gene giving rise to type IGlanzmann thrombasthenia in twofamilies in Portugal
PMID: 14985172
Gene: ITGB3
HGNC: 6156
Genetic analysis of integrin function in man:LAD-1 and other syndromes
PMID: 10936446
Gene: ITGB3
HGNC: 6156
InsufficientEvidence: This article mentions variants in the ITGB3 gene; however, the variants are not connected to GT probands; therefore, we have insufficient evidence
A novel (288delC) mutation in exon 2 of GPIIb associated with type I Glanzmann's thrombasthenia
PMID: 11091187
Gene: ITGA2B and/or ITGB3
HGNC: 6138 and 6156
GT 34
Case27: GT34, Female, India, age of onset is 5 years old
DiseaseAssertion: Glanzmann thrombasthenia
FamilyInfo: N/A
ParentalGenotype: N/A
CasePresentingHPOs: N/A
CaseHPOFreeText: Patients were recruited as they presented consecutively from 1996 to 1998 for evaluation of a mucocutaneous bleeding disorder
CaseNotHPOs: N/A
CaseNotHPOsFreeText: N/A
ProteinExpression: N/A
PlateletAggregation: All patients examined had defective ADP, epinephrine, and collagen induced aggregation and normal ristocetin induced aggregation
CasePreviousTesting: Mutations were detected by the method of single strand conformation polymorphism (SSCP) analysis, followed by nucleotide sequencing and confirmation by restriction fragment length polymorphism (RFLP) assays. The sequences of the primers employed and the reaction conditions for PCR amplification of the exons, adjacent intronic regions, and 50 and 30 untranslated regions of the aIIb and b3 gene
Gene: ITGB3
Variant: NM_000212.2:c.1402G>T (p.Glu468Ter)
LegacyVariant: N/A
ClinVar: N/A
CAiD: CA400029121
gnomAD: N/A
GT14
Case4: GT14, Female, India, age of onset is 3 years old
DiseaseAssertion: Glanzmann thrombasthenia
FamilyInfo: N/A
ParentalGenotype: N/A
CasePresentingHPOs: N/A
CaseHPOFreeText: Patients were recruited as they presented consecutively from 1996 to 1998 for evaluation of a mucocutaneous bleeding disorder
CaseNotHPOs: N/A
CaseNotHPOsFreeText: N/A
ProteinExpression: N/A
PlateletAggregation: All patients examined had defective ADP, epinephrine, and collagen induced aggregation and normal ristocetin induced aggregation
CasePreviousTesting: Mutations were detected by the method of single strand conformation polymorphism (SSCP) analysis, followed by nucleotide sequencing and confirmation by restriction fragment length polymorphism (RFLP) assays. The sequences of the primers employed and the reaction conditions for PCR amplification of the exons, adjacent intronic regions, and 50 and 30 untranslated regions of the aIIb and b3 gene
Gene: ITGA2B
Variant: c.575-22A>C the CAR is not pulling this variant up --> I will note this as Unregistered; however a senior biocurator may be able to parse this out
LegacyVariant: ^
ClinVar: ^
CAiD: ^
gnomAD: ^
GT 64
Case37: GT64, Female, India, age of onset is 16 years old
DiseaseAssertion: Glanzmann thrombasthenia
FamilyInfo: N/A
ParentalGenotype: N/A
CasePresentingHPOs: N/A
CaseHPOFreeText: Patients were recruited as they presented consecutively from 1996 to 1998 for evaluation of a mucocutaneous bleeding disorder
CaseNotHPOs: N/A
CaseNotHPOsFreeText: N/A
ProteinExpression: N/A
PlateletAggregation: All patients examined had defective ADP, epinephrine, and collagen induced aggregation and normal ristocetin induced aggregation
CasePreviousTesting: Mutations were detected by the method of single strand conformation polymorphism (SSCP) analysis, followed by nucleotide sequencing and confirmation by restriction fragment length polymorphism (RFLP) assays. The sequences of the primers employed and the reaction conditions for PCR amplification of the exons, adjacent intronic regions, and 50 and 30 untranslated regions of the aIIb and b3 gene
Gene: ITGB3
Variant: NM_000212.2:c.428T>G (p.Leu143Trp)
LegacyVariant: N/A
ClinVar: 13567
CAiD: CA123252
gnomAD: MAF in the Other population is 0.0001629 https://gnomad.broadinstitute.org/variant/17-45361875-T-G
Glanzmann's Thrombasthenia Associated With Deletion-Insertion and Alternative Splicing in the Glycoprotein IIb Gene
PMID: 7529063
Gene: ITGA2B
HGNC: 6138
Secondary prophylaxis with warfarin for recurrent thrombosis in a patient with Glanzmann thrombasthenia and F5 G1691A
PMID: 21848888
Gene: ITGA2B and/or ITGB3
HGNC: 6138 and 6156
InsufficientEvidence: This article mentions a Glanzmann thrombasthenia patient; however, no variants in ITGA2B and/or ITGB3 are mentioned
8
Case#: Siddiqi,_2023_case, female, 15 yo (report)
DiseaseAssertion: GT
FamilyInfo: consanguinity reported
ParentalGenotype: NR
CasePresentingHPOs: mucocutaneous bleeding
PlateletAggregation: absent for all agonists (ADP, Coll, Epi, AA) except ristocetin
CaseHPOFreeText:
CaseNotHPOs:
CaseNotHPOFreeText:
ProteinExpression: absent for aIIb and B3
CasePreviousTesting:
GenotypingMethod: PCR of ITGA2B and ITG3B (exons only)
PreviouslyPublished: no
Gene: ITGA2B
Variant: c.1423C > T/ p.Gln475*
HGVS: c.1423C>T (p.Gln475Ter)
ClinVarID: not found
CAID:CA399803382
gnomAD: not found in v.2.1.1 or v4.0
MultipleGeneVariants:
CM
Case9: Patient CM, gender, age and ethnicity not specified
DiseaseAssertion: Glanzmann thrombasthenia type I
FamilyInfo: N/A
ParentalGenotype: N/A
CasePresentingHPOs: N/A
CaseHPOFreeText: Bleeding symptoms were evaluated by examining available hospital records. Mild bleeders were defined as those who had minor symptoms, such as epistaxis or gum bleeds, and moderate bleeders suffered, in addition, from bleeding complications after surgery and trauma. Severe bleeders were defined as those with a history of spontaneous or life-threatening hemorrhages, such as gastrointestinal bleeding, or who had repeated episodes requiring platelet transfusion. See Table 1.
CaseNotHPOs: N/A
CaseNotHPOsFreeText: N/A
ProteinExpression: See Table 6
PlateletAggregation: See Table 6
CasePreviousTesting: To ascertain the mutations, we sequenced the coding regions of the αIIb and β3 subunits including the exon/intron boundaries
Gene: ITGA2B
Variant: NM_000419.3:c.2051T>G (p.Leu684Arg)
LegacyVariant: N/A
ClinVar: N/A
CAiD: CA399799849
gnomAD: N/A
TF
Case15: Patient TF, gender, age and ethnicity not specified
DiseaseAssertion: Glanzmann thrombasthenia type I
FamilyInfo: N/A
ParentalGenotype: N/A
CasePresentingHPOs: N/A
CaseHPOFreeText: Bleeding symptoms were evaluated by examining available hospital records. Mild bleeders were defined as those who had minor symptoms, such as epistaxis or gum bleeds, and moderate bleeders suffered, in addition, from bleeding complications after surgery and trauma. Severe bleeders were defined as those with a history of spontaneous or life-threatening hemorrhages, such as gastrointestinal bleeding, or who had repeated episodes requiring platelet transfusion. See Table 1.
CaseNotHPOs: N/A
CaseNotHPOsFreeText: N/A
ProteinExpression: See Table 6
PlateletAggregation: See Table 6
CasePreviousTesting: To ascertain the mutations, we sequenced the coding regions of the αIIb and β3 subunits including the exon/intron boundaries
Gene: ITGA2B
Variant: NM_000419.3:c.3060G>A
LegacyVariant: N/A
ClinVar: N/A
CAiD: CA500261104
gnomAD: N/A
8
Case8: Male, Iraq, age not specified
DiseaseAssertion: Glanzmann thrombasthenia
FamilyInfo: Table 1 mentions family history available for the proband, however no specific details about family provided in paper
ParentalGenotype: N/A
CasePresentingHPOs: HP:0000421, HP:0000225, HP:0031364, HP:0030137, HP:0002573
(Epistaxis, gingival bleeding, ecchymosis, prolonged bleeding following circumcision, rectal bleeding)
CaseHPOFreeText: Haemarthrosis, retro-peritoneal bleeding
CaseNotHPOs: N/A
CaseNotHPOsFreeText: N/A
ProteinExpression: N/A
PlateletAggregation: N/A
CasePreviousTesting: N/A
Gene: ITGB3
Variant: NM_000212.2:c.2031_2041del (p.Asp677Glufs)
LegacyVariant: (p.Asp651Glufs*3)
ClinVar: N/A
CAiD: CA915940605
gnomAD: N/A
A Point Mutation Leads to an Unpaired Cysteine Residue and aMolecular Weight Polymorphism of a Functional Plateletp3 Integrin Subuni
PMID:
Gene: ITGB3
HGNC: 6156
Glanzmann thrombasthenia
PMID: 16722529
Gene: ITGA2B and/or ITGB3
HGNC: 6138 and 6156
InsufficientEvidence: This article mentions many variants in ITGA2B/ITGB3 (See Fig. 1 and 2); however, no mention of probands with these variants
A novel ELISA for diagnosis of Glanzmann’s thrombasthenia and the heterozygote carriers
PMID: 22183252
Gene: ITGA2B and ITGB3
HGNC: 6138 and 6156
InsufficientEvidence: This article mentions variants in 10 GT patients; however, it does not specify each case/proband with their gender/age/ethnicity and bleeding phenotypes.
Missed at first Glanz: Glanzmann thrombasthenia initially misdiagnosed as Von Willebrand Disease
PMID: 30551951
Gene: ITGA2B and/or ITGB3 (Patient has GT; therefore, these genes may be involved)
HGNC: 6138 and 6156
InsufficientEvidence: Proband is presented in this article with GT; however, no variant information is provided therefore insufficient evidence
GT16
Case16: GT-16, Kosovo, gender or age not specified
DiseaseAssertion: Glanzmann thrombasthenia
FamilyInfo: N/A
ParentalGenotype: Mother: c.1594T>C heterozygous and Father: n/a
CasePresentingHPOs: N/A
CaseHPOFreeText: Bleeding symptoms are moderate (See Table 1) Abstract mentions patients' bleeding signs include epistaxis, mucocutaneous bleeding, haematomas, petechiae, GI bleeding and menorrhagia; however, not specified per proband.
CaseNotHPOs: N/A
CaseNotHPOsFreeText: N/A
ProteinExpression: Flow cytometry was performed and expression is stated as pathogenic in Table 1
PlateletAggregation: Platelet aggregation was performed and is stated as pathogenic in Table 1; however, no specific agonists mentioned
CasePreviousTesting: All exons of ITGA2B and ITGB3 genes as well as surrounding intron regions were amplified by PCR using intronic primers as pre-viously described (12). The purified DNA fragments were then di-rectly sequenced.
Gene: ITGA2B
Variant: NM_000419.3:c.842C>T and c.2602–2A>G/c.2602–3C>A het do not show up in the clin gen registry (Unregistered Variant?)
LegacyVariant: N/A
ClinVar: N/A
CAiD: CA399805055
gnomAD: N/A
GT7
Case7: (GT-7) Female, 57 years old, French
DiseaseAssertion: Glanzmann thrombasthenia
FamilyInfo: N/A
ParentalGenotype: N/A
CasePresentingHPOs: N/A
CaseHPOFreeText: Mucocutaneous bleeding
CaseNotHPOs: N/A
ProteinExpression: <5% surface expression levels of αIIbβ3
Platelet Aggregation: Absent platelet aggregation to all agonists (no mention for which agonists or response to ristocetin)
CasePreviousTesting: All the information we are given is "mutation screening of the ITGA2B and ITGB3 genes" the method for sequencing etc. was not stated
Gene: ITGB3
Variant: NM_000212.2:c.565C>T (p.Pro189Ser)
LegacyVariant: (p.Pro163Ser) (The paper gives legacy and current nomenclature)
ClinVar: N/A
CAiD: CA291224669
gnomAD MAF in the European (non-Finnish) population is 0.00002638 https://gnomad.broadinstitute.org/variant/17-45362012-C-T
M6
Case14: (M6) Female, 37 years old, French Gypsy
DiseaseAssertion: Glanzmann thrombasthenia
FamilyInfo: N/A
ParentalGenotype: N/A
CasePresentingHPOs: N/A
CaseHPOFreeText: Mucocutaneous bleeding
CaseNotHPOs: N/A
ProteinExpression: Failed to express alphaIIbbeta3 on the surface of their platelets
Platelet Aggregation: Absent platelet aggregation to all agonists (no mention for which agonists or response to ristocetin)
CasePreviousTesting: All the information we are given is "mutation screening of the ITGA2B and ITGB3 genes" the method for sequencing etc. was not stated
Gene: ITGA2B
Variant: NM_000419.3:c.1544+1G>A
LegacyVariant: N/A
ClinVar: 2895
CAiD: CA10575473
gnomAD N/A
11
Case11: Female, 5 years old, Indian
DiseaseAssertion: Glanzmann thrombasthenia
FamilyInfo: Sibling is proband number 12 in this article
ParentalGenotype: N/A
CasePresentingHPOs: HP:0031364, HP:0000421 (Ecchymosis, epistaxis)
CaseHPOFreeText: N/A
CaseNotHPOs: N/A
CaseNotHPOFreeText: N/A
ProteinExpression: Diagnosis of GT was made on the basis of quantitive determination of receptor count by flow cytometric analysis of GPIIb-IIIa
PlateletAggregation: Diagnosis of GT was made on the basis of impaired platelet aggregation (platelet aggregation was tested against ristocetin, ADP, collagen, epinephrine and arachidonic acid)
CasePreviousTesting: Multiplex PCR by using GPIIb primers and CSGE analysis were performed
Gene: ITGA2B
Variant: NM_000419.3:c.1600+1G>A
LegacyVariant: N/A
ClinVar: N/A
CAiD: CA399802454
gnomAD: N/A
two-year-old male child
Case1: Male, two years old, ethnicity not specified
DiseaseAssertion: Glanzmann thrombasthenia
FamilyInfo: N/A
ParentalGenotype: N/A
CasePresentingHPOs: N/A
CaseHPOFreeText: N/A
CaseNotHPOs: N/A
CaseNotHPOFreeText: N/A
ProteinExpression: The expression levels of this mutant αIIbβ3 complex on the platelet surface were normal
PlateletAggregation: N/A (minimal information for the proband)
CasePreviousTesting: N/A
Gene: ITGB3
Variant: NM_000212.2:c.2248C>T (p.Arg750Ter)
LegacyVariant: (p.Arg724Ter)
ClinVar: 13564
CAiD: CA123246
gnomAD: MAF in the African population is 0.0006008 https://gnomad.broadinstitute.org/variant/17-45384950-C-T
Autoimmune Thrombocytopenic Purpura (AITP) andAcquired Thrombasthenia Due to Autoantibodies to GPIIb-IIIa in a Patient With an Unusual Platelet MembraneGlycoprotein Composition
PMID: 9462551
Gene: ITGA2B and ITGB3
HGNC: 6138 and 6156
InsufficientEvidence: This article mentions a case report of a patient with thrombocytopenia; however, there is no mention of this proband harboring variants in ITGA2B and/or ITGB3
The use of recombinant factor VIIa in a patient with severe Glanzmann's thrombasthenia to facilitate insertion of a Port-a-Cath.
PMID: 10695773
Gene: ITGA2B and/or ITGB3
HGNC: 6138 and 6156
InsufficientEvidence: This article mentions a proband with GT; however, no variants in ITGA2B and/or ITGB3 were mentioned in this individual therefore there is insufficient evidence
Note: Able to get PDF of article; however, was not able to use Hypothes.is on the PDF
Case 2
Case#: Case 2, 20 yo Female
DiseaseAssertion: Glanzman thrombasthenia
ParentalGenotype: Not provided
CasePresentingHPOs: (HP:0000978, Bruising susceptibility) (HP:0000421, Epistaxis)
PlateletAggregation: Strong reduction of platelet aggregation with all agonists, except ristocetin. Normal platelet count.
CaseHPOFreeText:
CaseNotHPOs:
CaseNotHPOFreeText:
ProteinExpression: Flow cytometry, platelets with 18% to 24% residual αIIbβ3
CasePreviousTesting: Not provided
PreviouslyPublished: Not provided
Gene: ITGB3
HGVS: NM_000212.3:c.187C>T
ClinVar: 631774 https://www.ncbi.nlm.nih.gov/clinvar/variation/631774/
CAID: CA8622892
gnomAD: PopMax = 0.00002555 https://gnomad.broadinstitute.org/variant/17-47283375-C-T?dataset=gnomad_r4
Gene: ITGB3
HGVS: NM_000212.3:c.505C>T
ClinVar: 953061 https://www.ncbi.nlm.nih.gov/clinvar/variation/953061/
CAID: CA291224658
gnomAD: PopMax = 2.800e-7 https://gnomad.broadinstitute.org/variant/17-47284586-C-T?dataset=gnomad_r4
L
Case12: Patient ID L, Female, 10 years old, ethnicity not specified
DiseaseAssertion: Glanzmann thrombasthenia
FamilyInfo: Patient L is related to patient M (See Table 1; very minimal information)
ParentalGenotype: N/A
CasePresentingHPOs: HP:0000978, HP:0000225
(Easy bruising, gingival bleeding)
CaseHPOFreeText: N/A
CaseNotHPOs: HP:0000967, HP:0000979, HP:0004406, HP:0002239, HP:0002239, HP:0000790, HP:0005261, HP:0002248
(Petechiae, purpura, recurrent epistaxis, GI bleeding, intracranial hemorrhage, hematuria, hemarthrosis, hematemesis)
CaseNotHPOsFreeText: Hemorrhage after dental, hemorrhage after trauma, ear bleeding, hematoma
ProteinExpression: N/A
PlateletAggregation: Defective response to ADP, adrenaline, collagen, arachidonic acid, and normal response to ristocetin
CasePreviousTesting: Exon PCR was used to amplify coding regions of the ITGA2B and ITGB3 genes. PCR products were purified and Sanger sequenced. Segregation using parental samples was undertaken when available.
Gene: ITGB3
Variant: NC_000017.11:g.47284509T>G (p.Leu143Trp)
LegacyVariant: N/A
ClinVar: 13567
CAiD: CA123252
gnomAD: MAF in Other population 0.0001629 http://gnomad.broadinstitute.org/variant/17-45361875-T-G
PreviouslyPublished: PMID: 9376589
K
Case11: Patient ID K, Male, 5 years old, ethnicity not specified
DiseaseAssertion: Glanzmann thrombasthenia
FamilyInfo: Related to Patient's I and J (See Table 1)
ParentalGenotype: N/A (Parents are consangenous)
CasePresentingHPOs: HP:0000978, HP:0004406, HP:0000225, HP:0002239, HP:0000790
(Easy bruising, recurrent epistaxis, gingival bleeding, GI bleeding, hematuria)
CaseHPOFreeText: Hemorrhage after trauma, hematoma, ear bleeding
CaseNotHPOs: HP:0000967, HP:0000979, HP:0002239, HP:0000790, HP:0005261, HP:0002248
(Petechiae, purpura, intracranial hemorrhage, hemarthrosis, hematemesis)
CaseNotHPOsFreeText: Hemorrhage after dental, ear bleeding
ProteinExpression: N/A
PlateletAggregation: Defective response to ADP, adrenaline, collagen, arachidonic acid, and normal response to ristocetin
CasePreviousTesting: Exon PCR was used to amplify coding regions of the ITGA2B and ITGB3 genes. PCR products were purified and Sanger sequenced. Segregation using parental samples was undertaken when available.
Gene: ITGA2B
Variant: NM_000419.3:c.1652G>A
LegacyVariant: N/A
ClinVar: N/A
CAiD: CA8602986
gnomAD: MAF in South Asian population is 0.00006536 http://gnomad.broadinstitute.org/variant/17-42457470-C-T
PreviouslyPublished: PMID: 19172520
NM_000419:c.1210+5G>A
NM_000212:c.985A>G
patient 8
Case#: Patient 8
DiseaseAssertion: Glanzmann thrombasthenia
FamilyInfo: Not provided
ParentalGenotype: Not provided
CasePresentingHPOs: (HP:0000421, Epistaxis)
PlateletAggregation: All patients had abnormal platelet aggregation studies prompting analysis of platelet glycoprotein expression by flow cytometry.
ProteinExpression: Flow cytometry, 11 of 12 patients with GT had reduced antibody binding to GPIIb/IIIa
CasePreviousTesting: Not provided
PreviouslyPublished: Not provided
Gene: ITGA2B
Variant: c.1750C>T, p. (R584X)
HGVS: NM_000419.5:c.1750C>T
ClinVar: 2892 https://www.ncbi.nlm.nih.gov/clinvar/variation/2892/
CAID: CA115834
gnomAD: PopMax = 0.00008834 https://gnomad.broadinstitute.org/variant/17-44380004-G-A?dataset=gnomad_r4
Variant: c.2671C>T, p. (Q891X)
HGVS: NM_000419.5:c.2671C>T
ClinVar: 953054 https://www.ncbi.nlm.nih.gov/clinvar/variation/953054/
CAID: CA8602626
gnomAD: PopMax = 0.000007390 https://gnomad.broadinstitute.org/variant/17-44375647-G-A?dataset=gnomad_r4
14.
Case14: Female, age not specified
DiseaseAssertion: Glanzmann thrombasthenia
FamilyInfo: N/A
ParentalGenotype: N/A
CasePresentingHPOs: N/A
CaseHPOFreeText: Moderate bleeding tendency
CaseNotHPOs: N/A
CaseNotHPOsFreeText: N/A
ProteinExpression: N/A
PlateletAggregation: Minimal information, not specific enough
CasePreviousTesting: None
Gene: ITGA2B
Variant: NM_000212.2:c.224del (p.Cys75LeufsTer10)
LegacyVariant: N/A
ClinVar: N/A
CAiD: CA8622899
gnomAD: MAF in European non Finnish population 0.000008795 http://gnomad.broadinstitute.org/variant/17-45360777-TG-T
Thepatientisanadoptedblackteenagemale(K.W.)withtypeIGlanzmann'sthrombasthenia.
Case1: Adopted black teenage male with type I Glanzmann's thrombasthenia. Age not specified.
DiseaseAssertion: Type 1 Glanzmann's thrombasthenia
FamilyInfo: N/A
ParentalGenotype: N/A
CasePresentingHPOs: HP:0000421 (Epistaxis), HP:0000225 (Gingival bleeding)
CaseHPOFreeText: Moderate bleeding
CaseNotHPOs: N/A
PlateletAggregation: Absence of platelet aggregation after stimulation with epinephrine, collagen, and ADP.
ProteinExpression: Immunoblot analysis of GPIIb and GPIIIa confirmed thrombasthenic phenotype.
CasePreviousTesting: Initial Western Blot analysis of platelet proteins from this patient did not detect any GPIIb, but did detect small amounts of GPIIIa of normal mobility. Quantification of vitronectin receptor (VNR) demonstrated that this patient had ~ 1.5-2 times the number of these receptors per platelet compared with controls. Genomic Southern Blot studies showed a deletion in the GPIIb gene with ~4.5 kb. PCR studies using platelet RNA and oligonucleotides suggested the deletion of exons 2-9 does not significantly decrease levels of GPIIb mRNA.
Gene: ITGA2B
Variant: 4.5-KB DEL, EX2-9
LegacyVariant: N/A
ClinVar: 2890
CAiD: N/A
gnomAD N/A
Two Human Antibodies Reacting With Different Epitopes on Integrin Beta 3 of Platelets and Endothelial Cells
PMID: 7517865
Gene: ITGA2B and/or ITGB3
HGNC: 6138 and 6156
InsufficientEvidence: This mentions a Glanzmann thrombasthenia patient (case report); however, no variants in ITGA2B and/or ITGB3 are mentioned in this patient; therefore, we have insufficient evidence
Patient'sCase.
Case1: (Patient P), age and ethnicity not specified (cannot access previously published article where patient information is detailed: (Caen, J. P., Rosa, J.-P., Soria, C. & Boizard, B. (1983) C. R. Acad. Sci. Ser. 2 29, 479-481)
DiseaseAssertion: Glanzmann thrombasthenia
FamilyInfo: See pedigree in Fig. 5
ParentalGenotype: N/A
CasePresentingHPOs: N/A
CaseHPOFreeText: Exhibited lifelong bleeding tendency
CaseNotHPOs: N/A
CaseNotHPOFreeText: N/A
ProteinExpression: See Table 1
PlateletAggregation: Failure of platelets to aggregate and to bind fibrinogen in response to agonists such as ADP, collagen or thrombin
CasePreviousTesting: Sequenced the cytoplasmic domain of ITGB3 following PCR on the platelet RNA
Gene: ITGB3
Variant: NM_000212.2:c.2332T>C (p.Ser778Pro)
LegacyVariant: (p.Ser752Pro)
ClinVar: 13556
CAiD: CA123230
gnomAD: N/A
PreviouslyPublished: PMID: 6223690 (this article is not available on through UNC Libraries and there is no option to request the text either)
Novel and Recurrent Mutations ofITGA2BandITGB3Genes inKorean Patients with Glanzmann Thrombasthenia
PMID: 22190468
Gene: ITGA2B and ITGB3
HGNC: 6138 and 6156
The patient was a 35‐year‐old female
Case1: Female, 35 years old, Japanese
DiseaseAssertion: Glanzmann thrombasthenia
FamilyInfo: Pedigree found in Fig 4
ParentalGenotype: Mother: heterozygote for (p.Ile330Asn) and Father: heterozygote for (p.His306Pro)
CasePresentingHPOs: N/A
CaseHPOFreeText: Profuse bleeding at times
CaseNotHPOs: N/A
CaseNotHPOFreeText: N/A
ProteinExpression: The surface expression of αIIbβ3 complex on the patient's platelets was not observed in the flow cytometric analysis used to detect the αIIbβ3 complex (Fig. 1A).
PlateletAggregation: No aggregation of patient's platelets in response to ADP and collagen but normal aggregation occurred in response to ristocetin
CasePreviousTesting: Nucleotide sequences of beta3 cDNA and beta3 genomic DNA were analyzed by the dye terminator cycle sequencing method, in addition the nucleotide sequences of alphaIIbeta cDNA were anlso analyzed based on the published sequence of alphaIIbeta
Gene: ITGB3
Variant: NM_000212.2:c.989T>A (p.Ile330Asn) and NM_000212.2:c.917A>C (p.His306Pro)
LegacyVariant: (p.Ile304Asn) and (p.His280Pro)
ClinVar: N/A
CAiD: CA400025722 and CA291224999
gnomAD: MAF in the East Asian population is 0.00005437 https://gnomad.broadinstitute.org/variant/17-45364575-A-C
3-month-old male
Case#: 3 month old male neonate
Disease: Glazmann's Thrombasthenia
CasePresentingHPOs: HP:0000967, HP:0007420, HP:0003010
Petechiae, Spontaneous hematomas, Prolonged bleeding time
PlateletAgreggation: Impaired in response to all stimuli including adenine diphosphate (2%), collagen (24%), arachidonic acid (13%), and epinephrine (13%). In contrast, platelet aggregation to ristocetine was almost normal (67%; lower limit of normal is 70%).
ExpressionEvidence: Flow Cytometry analysis showed reduced αIIbβ3 expression on patient platelets
FamilyInfo: Pedigree Figure 1. Homozygous HPA-1aa father and heterozygous HPA-1ab mother indicating that both HPA-1a alleles inherited to the GT son are defective carrying either Cys460Trp or Trp11Arg mutation.
GenotypingMethod:
Compound heterozygous:
Allele 1
ClinVar: 953012
CAID: CA400029369
Variant: NM_000212.3:c.1458C>G
GnomAD: Not Found
FunctionalEvidence: Flow cytometry analysis of wild-type (Cys460) and mutant (Trp460) expressed on HEK293 cells showed equal surface expression of αIIbβ3 and αvβ3. Immunoblotting analysis (Figure 2B) showed that the mutant β3 migrated slightly slower in comparison with wild-type β3 isoform, indicating that the disruption of one disulfide bond due to Cys460Trp mutation alters the secondary structure of integrin αIIbβ3. However, evidence that Csy460Trp mutation alters the binding of some mAbs against HPA-1a.
Allele 2:
ClinVar: 953028
CAID: CA291240306
Variant: NM_000212.3:c.31T>C
GnomAD: Not Found