Case 19: 2 year old male, study ID UZ070 in supplmental table

DiseaseAssertion: low VWF

FamilyInfo:

ParentalGenotype(s):

CasePresentingHPOs: HP:0032442

CaseHPOFreeRext: vWF:Ag (%) = 45; vWF:GPIbR (%) = 39.4; Act/Ag ratio = 0.88; FVIII:C (%) = 74.4; Platelets (x10^9/L) = 232

CaseNOTHPOs:

CaseNOTHPOFreeText:

CasePreviousTesting: The Thrombosis-Hemostasis gene panel test used whole exome sequencing and included 99 diagnostic-grade genes (table 1 in PMID:36696193)

GenotypingMethod:WES using the coagulation subpanel of the UZ Leuven Thrombosis-Haemostasis gene panel test. WES was performed on the sequencing platform NovaSeq 6000 (Illumina), and Alissa Interpret software v5.2-5.4 (Agilent) was used for variant interpretation. Assessment of copy number variation was validated within the bioinformatics pipeline. The American College of Medical Genetics and Genomics and the Association of Molecular Pathology guidelines were used to classify variants as pathogenic (P), likely pathogenic (LP), a variant of uncertain significance (VUS), or (likely) benign (LB, B) variants

PreviouslyPublished:

Gene: VWF

Variant: c.5746C>G p.Arg1916Gly

HGVS:

ClinVarID: 2572097

CAID:

gnomAD: 0.000004337 (7 in 1613868) no homozygotes https://gnomad.broadinstitute.org/variant/12-6011713-G-C?dataset=gnomad_r4

MultipleSequenceVariants:

Gene: SERPINC1

Variant: c.89T>A p.Val30Glu

ClinVarID: 18012

gnomAD: 0.002625 (4237 in 1614198) 14 homozygotes https://gnomad.broadinstitute.org/variant/1-173914872-A-T?dataset=gnomad_r4