Supplementary Tables 1 and 2 combined information:

Case32: GT32, Male, 9 years old

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: Not available per supplementary table 1

ParentalGenotype: Parents are not consanguineous, no other genotype information available

CasePresentingHPOs:HP:0000421

(Epistaxis)

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 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.886G>A (p.Gly296Arg) and NM_000419.3:c.460_462del (p.Glu154del)

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA8603306 (p.Gly296Arg) and CA8603457 (p.Glu154del)

gnomAD: MAF in East Asian population: 0.00005454 https://gnomad.broadinstitute.org/variant/17-42461684-C-T and MAF in European (non-Finnish) population 0.000008870 https://gnomad.broadinstitute.org/variant/17-42463030-TCTC-T