Case: Patient 9, Family F (Table 1.), F/76, Afro-Caribbean

DiseaseAssertion: VWD2A (IIE)

FamilyInfo: Patient 8 (M/86, Afro-Caribbean) and Patient 28 (F/55, Afro-Caribbean) also from Family F. (Table 1.)

ParentalGenotype(s): NA

CasePresentingHPOs:

CaseHPOFreeRext: BAT =11, FVIII:C (IU/dL) = 40, VWF:Ag (IU/dL) = 30, VWF:Act (IU/dL) = 28

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.3426T > C, p.(Cys1142 =)

HGVS: NM_000552.5:c.3426T>C (p.Cys1142=)

ClinVarID: 256668

CAID: CA6402757

gnomAD: MAF of 0.2077 (7935/38206 alleles) in African/African American population https://gnomad.broadinstitute.org/variant/chr12-6022852-A-G?dataset=gnomad_r4

Variant: c.3445T > C, p.(Cys1149Arg)

HGVS: NM_000552.5:c.3445T>C (p.Cys1149Arg)

ClinVarID: 309

CAID: CA228410

gnomAD: MAF of 0.000003160 (1/316464 alleles) in European (non-Finnish) population https://gnomad.broadinstitute.org/variant/chr12-6022833-A-G?dataset=gnomad_r4

Variant: c.3485C > T, p.(Pro1162Leu)

HGVS: NM_000552.5(VWF):c.3485C>T (p.Pro1162Leu)

ClinVarID: 256669

CAID: CA6402756

gnomAD: MAF of 0.2076 (7087/34136 alleles) in African/African American population https://gnomad.broadinstitute.org/variant/chr12-6022793-G-A?dataset=gnomad_r4

Variant: c.3486A > G, p.(Pro1162 =)

HGVS: NM_000552.5:c.3486A>G (p.Pro1162=)

ClinVarID: 256670

CAID: CA6402755

gnomAD: MAF of 0.2083 (7074/33968 alleles) in African/African American population https://gnomad.broadinstitute.org/variant/chr12-6022792-T-C?dataset=gnomad_r4

Variant: c.4414G > C p.(Asp1472His)

HGVS: NM_000552.5:c.4414G>C (p.Asp1472His)

ClinVarID: 256679

CAID: CA6402534

gnomAD: MAF of 0.5076 (38011/74882 alleles) in African/African American population https://gnomad.broadinstitute.org/variant/chr12-6019004-C-G?dataset=gnomad_r4

Variant: c.6554G > A, p.(Arg2185Gln)

HGVS: NM_000552.5:c.6554G>A (p.Arg2185Gln)

ClinVarID: 100443

CAID: CA228748

gnomAD: MAF of 0.1927 (14427/74878 alleles) in African/African American population https://gnomad.broadinstitute.org/variant/chr12-5993906-C-T?dataset=gnomad_r4