Case#: Patient ID 2, Female 13 years old. North Indian

Disease: Glazmann's Thrombasthenia

CasePresentingHPOs: HP:0031364, HP:0003540, HP:0000421, HP:0002239, HP:0000132

Ecchymosis, Impaired platelet aggregation, Epistaxis, Gastrointestinal hemorrhage, Menorrhagia

PlateletAgreggation: LTA with ADP, Epi, Coll, AA, and Ristocetin: Impaired with all agonists

GenotypingMethod: Next generation sequencing. Sanger sequencing used to confirm pathogenic variants

ClinVar: 953042

CAID: CA399804619

Variant: NM_000419.5:c.1028T>C

GnomAD: Not Found

ExpressionEvidence: Flow Cytometry for platelet expression of GPIIb/IIIa in CD41a 4.9% and CD61 96%.

Case1: Male, age not specified, ethnicity not specified

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: See Fig 3

ParentalGenotype: Both mutations were found to be heterozygous in all family members that includes parents

CasePresentingHPOs:

(Gum bleeding, ecchymosis, epistaxis)

CaseHPOFreeText: N/A

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: Flow cytometry showed that the surface expression of GPIIb/IIIa in patients was 0% and both parents also showed reduced expression as well.

PlateletAggregation: Platelet aggregation in response to all the agonists except risocetin was completely absent in the patient

CasePreviousTesting: Mutation screening by conformational sensitive gel electrophoresis was performed in all the 30 exons of ITGA2B and 15 exons of ITGB3 gene in this patient

Gene: ITGA2B

Variant: NM_000419.3:c.1028T>C (p.Leu343Pro) and a promoter variant g.951G>A

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA399804619 and need to ask about second variant--made note in google doc to ask

gnomAD: N/A

Case2: GT18, Gender, age, ethnicity not specified

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: 1 brother is heterozygous for the g.951G>A promoter variant and does not have the other Leu343Pro mutation and one brother is normal and does not have the NM_000419.3:c.2915dup mutation

ParentalGenotype: Father: homozygous for the g.951G>A promoter variant and the Leu343Pro Mother: is heterozyous for both those mutations and mother does not have NM_000419.3:c.2915dup while the father is heterozygous for NM_000419.3:c.2915dup

CasePresentingHPOs: N/A

CaseHPOFreeText: Inclusion criteria were patients with a history of mucocutaneous bleeding (Figure 1 shows a bar diagram of all the clinical manifestations in the patient cohort in this article)

CaseNotHPOs: N/A

ProteinExpression: Platelet receptor alphaIIbbeta3 protein was analyzed by flow cytometry followed by western blotting

Platelet Aggregation: Inclusion criteria for probands was absent or reduced platelet aggregation with agonists such as ADP, adrenaline, arachidonic acid, and collagen (no mention of ristocetin here-- this article does not tell us the specific aggregation for each proband in the paper)

CasePreviousTesting: For mutation analysis of ITGA2B and ITGB3 genes, DNA extraction from whole blood, PCR, heteroduplex PCR followed by CSGE and DNA sequencing were performed. All 30 exons of ITGA2B and 15 exons of ITGB3, as well as their promoters, were analyzed by CSGE following heteroduplex PCR.

Gene: ITGA2B

Variant: NC_000017.11:g.44393555C>T (g.951G>A promoter variant) and NM_000419.3:c.1028T>C (p.Leu343Pro) and NM_000419.3:c.2915dup

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA913189168 (promoter variant) and CA399804619 (p.Leu343Pro) and CA8602531

gnomAD MAF in the East Asian population is 0.0001088 https://gnomad.broadinstitute.org/variant/17-42452054-C-CG for the NM_000419.3:c.2915dup variant

Case9: (GT58), Gender, age and ethnicity not reported

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: N/A

CaseHPOFreeText: Inclusion criteria were patients with a history of mucocutaneous bleeding (Figure 1 shows a bar diagram of all the clinical manifestations in the patient cohort in this article)

CaseNotHPOs: N/A

ProteinExpression: Platelet receptor alphaIIbbeta3 protein was analyzed by flow cytometry followed by western blotting

Platelet Aggregation: Inclusion criteria for probands was absent or reduced platelet aggregation with agonists such as ADP, adrenaline, arachidonic acid, and collagen (no mention of ristocetin here-- this article does not tell us the specific aggregation for each proband in the paper)

CasePreviousTesting: For mutation analysis of ITGA2B and ITGB3 genes, DNA extraction from whole blood, PCR, heteroduplex PCR followed by CSGE and DNA sequencing were performed. All 30 exons of ITGA2B and 15 exons of ITGB3, as well as their promoters, were analyzed by CSGE following heteroduplex PCR.

Gene: ITGA2B

Variant: NM_000419.3:c.1028T>C (p.Leu343Pro)

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA399804619 (p.Leu343Pro)

gnomAD N/A

Case4: (GT69), Gender, age and ethnicity not reported

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: N/A

CaseHPOFreeText: Inclusion criteria were patients with a history of mucocutaneous bleeding (Figure 1 shows a bar diagram of all the clinical manifestations in the patient cohort in this article)

CaseNotHPOs: N/A

ProteinExpression: Platelet receptor alphaIIbbeta3 protein was analyzed by flow cytometry followed by western blotting

Platelet Aggregation: Inclusion criteria for probands was absent or reduced platelet aggregation with agonists such as ADP, adrenaline, arachidonic acid, and collagen (no mention of ristocetin here-- this article does not tell us the specific aggregation for each proband in the paper)

CasePreviousTesting: For mutation analysis of ITGA2B and ITGB3 genes, DNA extraction from whole blood, PCR, heteroduplex PCR followed by CSGE and DNA sequencing were performed. All 30 exons of ITGA2B and 15 exons of ITGB3, as well as their promoters, were analyzed by CSGE following heteroduplex PCR.

Gene: ITGA2B

Variant: NC_000017.11:g.44393555C>T (g.951G>A promoter variant) and NM_000419.3:c.1028T>C (p.Leu343Pro)

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA913189168 (promoter variant) and CA399804619 (p.Leu343Pro)

gnomAD N/A