Case: IP #62

DiseaseAssertion: type 2A (IIA) VWD

FamilyInfo:

ParentalGenotype(s):

CasePresentingHPOs:

CaseHPOFreeRext: VWF:Ag [IU/dL] = 55; VWF:Ac [IU/dL] = 9; FVIII:C [IU/dL] = 87

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.4883T>C p.Ile1628Thr

HGVS:

ClinVarID: 284

CAID:

gnomAD: 0.000001859 (3 in 1613848) no homozygotes https://gnomad.broadinstitute.org/variant/12-6018535-A-G?dataset=gnomad_r4

Case: IP #61

DiseaseAssertion: type 2A (IIA) VWD

FamilyInfo:

ParentalGenotype(s):

CasePresentingHPOs: HP:0032442 - blood group O

CaseHPOFreeRext: VWF:Ag [IU/dL] = 17; VWF:Ac [IU/dL] = 5; FVIII:C [IU/dL] = 20

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.4883T>C p.Ile1628Thr

HGVS:

ClinVarID: 284

CAID:

gnomAD: 0.000001859 (3 in 1613848) no homozygotes https://gnomad.broadinstitute.org/variant/12-6018535-A-G?dataset=gnomad_r4

Case: IP #60

DiseaseAssertion: type 2A (IIA) VWD

FamilyInfo:

ParentalGenotype(s):

CasePresentingHPOs: HP:0032370 - blood group A

CaseHPOFreeRext: VWF:Ag [IU/dL] = 38; VWF:Ac [IU/dL] = 7; FVIII:C [IU/dL] = 37

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.4883T>C p.Ile1628Thr

HGVS:

ClinVarID: 284

CAID:

gnomAD: 0.000001859 (3 in 1613848) no homozygotes https://gnomad.broadinstitute.org/variant/12-6018535-A-G?dataset=gnomad_r4

Case: IP #59

DiseaseAssertion: type 2A (IIA) VWD

FamilyInfo:

ParentalGenotype(s):

CasePresentingHPOs:

CaseHPOFreeRext: VWF:Ag [IU/dL] = 28.7; VWF:Ac [IU/dL] = 5; FVIII:C [IU/dL] = 32

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.4883T>C p.Ile1628Thr

HGVS:

ClinVarID: 284

CAID:

gnomAD: 0.000001859 (3 in 1613848) no homozygotes https://gnomad.broadinstitute.org/variant/12-6018535-A-G?dataset=gnomad_r4

Case#: Ahmad_2014_660

DiseaseAssertion: VWD type 2A

FamilyInfo: heterozygous (probably affected according to multimer analysis) mother and sibling

ParentalGenotype: heterozygous mother and sibling, homozygous wt father

CasePresentingHPOs: none described

CaseHPOFreeText: none described

CaseNotHPOs:

CaseNotHPOFreeText:

CasePreviousTesting: not reported

GenotypingMethod: PCR, restriction digest

Gene: VWF

Variant: NM_000552.5(VWF):c.4883T>C (p.Ile1628Thr)

HGVS:

ClinVarID: 284

CAID:

gnomAD: not reported

MultipleGeneVariants:

Case#: Ahmad_2014_125

DiseaseAssertion: VWD type 2A

FamilyInfo: heterozygous (probably affected according to multimer analysis) mother

ParentalGenotype: heterozygous mother, homozygous wt father and sibling

CasePresentingHPOs: none described

CaseHPOFreeText: none described

CaseNotHPOs:

CaseNotHPOFreeText:

CasePreviousTesting: not reported

GenotypingMethod: PCR, restriction digest

Gene: VWF

Variant: NM_000552.5(VWF):c.4883T>C (p.Ile1628Thr)

HGVS:

ClinVarID: 284

CAID:

gnomAD: not reported

MultipleGeneVariants:

Case#: Melo-Nava_2007,31, F, 7 y.o. (report), Mestizo Mexican and French ancestry reported

DiseaseAssertion: VWD type 3

FamilyInfo: No consanguinity

ParentalGenotype: NR

CasePresentingHPOs:

CaseHPOFreeText: low 42% VWF:Ag, low FVIII:C 40%, low RIPA 24%, moderate bleeding severity

CaseNotHPOs: abnormal platelet count

CaseNotHPOFreeText:

CasePreviousTesting: not reported

GenotypingMethod: PCR

Gene: VWF

Variant:

HGVS: NM_000552.5(VWF):c.4883T>C (p.Ile1628Thr)

ClinVarID: 284

CAID:

gnomAD: Not found

MultipleGeneVariants:

Case#: Iannuzzi_1991_IV-1, M, age unknown, origin unknown

DiseaseAssertion: VWD type 2A

FamilyInfo: Affected mother, aunt, grandfather, and many other relatives. LOD score 3.61 reported (12 affected and genotype positive, 4 unaffected genotype positive. 4 affected also have HTT with vWD.

ParentalGenotype:

CasePresentingHPOs: As reported elsewhere (Hanna etal1984), the diagnosis of typeII AvWD was based on the following: bleedingtime, FVIII procoagulant activity, vFW:Ag, ristocetincofactoractivity, platelet aggregation studies, and vWF multimer analysis

CaseHPOFreeText:

CaseNotHPOs:

CaseNotHPOFreeText:

CasePreviousTesting:

GenotypingMethod: PCR-RFLP of exon 28 of VWF

Gene: VWF

Variant:

HGVS: NM_000552.5(VWF):c.4883T>C (p.Ile1628Thr)

ClinVarID: 284

CAID:

gnomAD: not reported

MultipleGeneVariants:

Case: 2A-7

DiseaseAssertion: VWD2A

FamilyInfo:

ParentalGenotype(s):

CasePresentingHPOs: AcuStar RCo/Ag = 0.27; AcuStar CB/Ag = 0.10; ELISA CB/Ag = 0.39

CaseHPOFreeText:

CaseNOTHPOs:

CaseNOTHPOFreeText:

CasePreviousTesting:

GenotypingMethod: not described

PreviouslyPublished: PMID:1673047

Gene: VWF

Variant: c.4883T>C (p.Ile1628Thr)

HGVS: NM_000552.5(VWF):c.4883T>C (p.Ile1628Thr)

ClinVarID: 284; https://www.ncbi.nlm.nih.gov/clinvar/variation/284/?new_evidence=false

CAID:

gnomAD: absent