Case: P76, Chinese, male, 21yo

DiseaseAssertion: VWD1

FamilyInfo: NA

ParentalGenotype(s): NA

CasePresentingHPOs: HP:0012147

(Reduced quantity of VWF)

CaseHPOFreeText: type A blood, bleeding score = 3; VWF:Ag (%) = 4.7, VWF:RCo (%) = 5.4, FVIII:C (%) = 27.2, VWF:CB (%) = 5.5, VWFpp (%) = 4.3, VWF:RCo/VWF:Ag = 1.1, VWF:CB/VWF:Ag = 1.2, VWFpp/VWF:Ag = 0.9, FVIII:C/VWF:Ag = 5.8, RIPA (1.2 mg/ml, %) = 73.4

CaseNOTHPOs:

CaseNOTHPOFreeText:

CasePreviousTesting: NA

GenotypingMethod: NGS

PreviouslyPublished: NA

Gene: VWF

Variant 1: Exon1-exon5 del - Unregistered Variant

HGVS: NA

ClinVarID: NA

CAID: NA

gnomAD: NA

Variant 2: c.7464C>T (p.Gly2488=) - reported to be a splice site variant

HGVS: NM_000552.4(VWF):c.7464C>T (p.Gly2488=)

ClinVarID: 619755; https://www.ncbi.nlm.nih.gov/clinvar/variation/619755/

CAID: NA

gnomAD: MAF = 0.000008799 (1/113644 alleles) in the European (non-Finnish) population; https://gnomad.broadinstitute.org/variant/12-6080849-G-A?dataset=gnomad_r2_1

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

Case: P1, female, 36yo

DiseaseAssertion: VWD2M

FamilyInfo: NA

ParentalGenotype(s): NA

CasePresentingHPOs: HP:0012147, HP:0030129, HP:0030130

(Reduced quantity of VWF, Impaired ristocetin cofactor assay activity, Impaired von Willebrand factor collagen binding activity)

CaseHPOFreeText: bleeding score = 7; VWF:Ag (%) = 22, VWF:RCo(%) = 11, VWF:RCo/VWF:Ag ratio = 0.50, VWF:CIIIB (%) = 19, VWF:CIIIB/VWF:Ag ratio = 0.86, VWF:CVIB (%) = 13, VWF:CVIB/VWF:Ag ratio = 0.59

CaseNOTHPOs: HP:0030132

(Absence of large von Willebrand factor multimers)

CaseNOTHPOFreeText: NA

CasePreviousTesting: NA

GenotypingMethod: NGS

PreviouslyPublished: NA

Gene: VWF

Variant 1: c.3944G>A (p.Arg1315His)

HGVS: NM_000552.4(VWF):c.3944G>A (p.Arg1315His)

ClinVarID: 100311; https://www.ncbi.nlm.nih.gov/clinvar/variation/100311/

CAID:

gnomAD: MAF = 0.0001633 (1/6124 alleles) in "Other" population; https://gnomad.broadinstitute.org/variant/12-6128640-C-T?dataset=gnomad_r2_1

Variant 2: c.7464C>T (p.Gly2488=)

HGVS: NM_000552.4(VWF):c.7464C>T (p.Gly2488=)

ClinVar: 619755; https://www.ncbi.nlm.nih.gov/clinvar/variation/619755/

gnomAD: MAF = 0.000008799 (1/113644 alleles) in European (Non-Finnish) population; https://gnomad.broadinstitute.org/variant/12-6080849-G-A?dataset=gnomad_r2_1