Case9: No assertion made on age, gender or ethnicity

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: The identified variants were heterozygote in parents.

CasePresentingHPOs: HP:0005542

(Prolonged clotting time)

CaseHPOFreeText: Bleeding time greater than 20 minutes and hematocrit of 38.1%

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: N/A

PlateletAggregation: N/A

CasePreviousTesting: Genetic study of patient was conducted using direct sequencing of entire coding and exon-intron boundaries of the ITGA2B and ITGB3 genes.

Gene: ITGA2B

Variant: NM_000419.3:c.1392A>G (p.Pro464Pro)

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA500273575

gnomAD: https://gnomad.broadinstitute.org/variant/17-42458248-T-C

Case9: No assertion made on age, gender or ethnicity

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: The identified variants were heterozygote in parents.

CasePresentingHPOs: HP:0000978, HP:0000132, HP:0000421,HP:0000979

(Easy bruising, menorrhagia, epistaxis, purpura)

CaseHPOFreeText: N/A

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: N/A

CasePreviousTesting: Genetic study of patient was conducted using direct sequencing of entire coding and exon-intron boundaries of the ITGA2B and ITGB3 genes.

Gene: ITGA2B

Variant: NM_000419.3:c.189_236del (c.189-319_236del)

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA915940231

gnomAD: N/A

Case12: No assertion made on age, gender or ethnicity

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: The identified variants were heterozygote in parents.

CasePresentingHPOs: HP:0005542

(Prolonged clotting time)

CaseHPOFreeText: Bleeding time greater than 20 minutes, Hematocrit of 39.6%

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: N/A

CasePreviousTesting: Genetic study of patient was conducted using direct sequencing of entire coding and exon-intron boundaries of the ITGA2B and ITGB3 genes.

Gene: ITGA2B

Variant: NM_000419.3:c.842C>T (p.Thr281Ile)

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA399805055

gnomAD: N/A

Case8: No assertion made on age, gender or ethnicity

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: The identified variants were heterozygote in parents.

CasePresentingHPOs: N/A

CaseHPOFreeText: N/A

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: N/A

CasePreviousTesting: Genetic study of patient was conducted using direct sequencing of entire coding and exon-intron boundaries of the ITGA2B and ITGB3 genes.

Gene: ITGA2B

Variant: NM_000419.3:c.409-3C>G (intronic mutation with no amino acid change)

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA915940224

gnomAD: N/A

PMID: 31029159

Gene: ITGB3 and ITGA2B

HGNC: 6156 and 6138 respectively as shown above.

Case4: Patient RL

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs:

CaseHPOFreeText: N/A

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: N/A

PlateletAggregation: N/A

CasePreviousTesting: The amplification of DNA fragments using PCR and their electrophoretic migration through a denaturing gradient was used to scan the entire coding region, splice site junctions and promoter regions of the GPIIb and GPIIIa genes for all 20 patients in this study

Gene: ITGA2B

Variant: NM_000419.3:c.1544+1G>A

LegacyVariant: N/A

ClinVar: 2895

CAiD: CA10575473

gnomAD: N/A

Case8: Patient DC

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs:

CaseHPOFreeText: N/A

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: N/A

PlateletAggregation: N/A

CasePreviousTesting: The amplification of DNA fragments using PCR and their electrophoretic migration through a denaturing gradient was used to scan the entire coding region, splice site junctions and promoter regions of the GPIIb and GPIIIa genes for all 20 patients in this study

Gene: ITGA2B

Variant: NM_000419.3:c.483C>G (p.Cys161Trp)

LegacyVariant: (p.Cys130Trp)

ClinVar: N/A

CAiD: CA399805884

gnomAD: N/A

Case3: Patient HLa

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs:

CaseHPOFreeText: N/A

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: N/A

PlateletAggregation: N/A

CasePreviousTesting: The amplification of DNA fragments using PCR and their electrophoretic migration through a denaturing gradient was used to scan the entire coding region, splice site junctions and promoter regions of the GPIIb and GPIIIa genes for all 20 patients in this study

Gene: ITGA2B

Variant: NM_000419.3:c.1544+1G>A

LegacyVariant: N/A

ClinVar: 2895

CAiD: CA10575473

gnomAD: N/A

Case2: Patient HLo

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs:

CaseHPOFreeText: N/A

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: N/A

PlateletAggregation: N/A

CasePreviousTesting: The amplification of DNA fragments using PCR and their electrophoretic migration through a denaturing gradient was used to scan the entire coding region, splice site junctions and promoter regions of the GPIIb and GPIIIa genes for all 20 patients in this study

Gene: ITGA2B

Variant: NM_000419.3:c.1544+1G>A

LegacyVariant: N/A

ClinVar: 2895

CAiD: CA10575473

gnomAD: N/A

Case15: Patient MMc

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: N/A

CaseHPOFreeText: N/A

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: N/A

PlateletAggregation: N/A

CasePreviousTesting: The amplification of DNA fragments using PCR and their electrophoretic migration through a denaturing gradient was used to scan the entire coding region, splice site junctions and promoter regions of the GPIIb and GPIIIa genes for all 20 patients in this study

Gene: ITGA2B

Variant: NM_000419.3:c.2842-1G>C

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA399791378

gnomAD: N/A

Case10: Patient FC

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs:

CaseHPOFreeText: N/A

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: N/A

PlateletAggregation: N/A

CasePreviousTesting: The amplification of DNA fragments using PCR and their electrophoretic migration through a denaturing gradient was used to scan the entire coding region, splice site junctions and promoter regions of the GPIIb and GPIIIa genes for all 20 patients in this study

Gene: ITGA2B

Variant: NM_000419.3:c.2540T>C (p.Leu847Pro)

LegacyVariant: (p.Leu816Pro)

ClinVar: N/A

CAiD: CA399794666

gnomAD: MAF in the African population is 0.00006443 https://gnomad.broadinstitute.org/variant/17-42453262-A-G

Supplementary Table S1 & S2 Proband and Variant Information:

Case20: GT23, Male, 19, French

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: HP:0000978, HP:0000225, HP:0000421

(Easy bruising, gingival bleeding, epistaxis)

CaseHPOFreeText: N/A

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: Flow cytometry showed <5% expression of αIIbβ3 (See Supplementary Table 1)

PlateletAggregation: Absent platelet aggregation (See Supplementary Table 1)

CasePreviousTesting: Sanger sequencing of ITGA2B and ITGB3

Gene: ITGB3

Variant: NM_000212.2:c.1031A>C (p.Tyr344Ser)

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA400025814

gnomAD: N/A

Supplementary Table S1 & S2 Proband and Variant Information:

Case9: GT10, Male, 45, French and Italian

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: N/A

CaseHPOFreeText: Mild lifelong bleeding

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: Flow cytometry showed 30-50% variant expression of αIIbβ3 (See Supplementary Table 1)

PlateletAggregation: Residual platelet aggregation (See Supplementary Table 1)

CasePreviousTesting: Sanger sequencing of ITGA2B and ITGB3

Gene: ITGA2B

Variant: NM_000419.3:c.1440-13_1440-1del (p.Arg480Serfs*106) and NM_000419.3:c.3077G>A (p.Arg1026Gln)

LegacyVariant: N/A

ClinVar: 50232

CAiD: CA913184940 and CA10575572

gnomAD: MAF in the European (non-Finnish) population 0.00006482 http://gnomad.broadinstitute.org/variant/17-45363676-T-C and MAF in the European (non-Finnish) population is 0.000008801 http://gnomad.broadinstitute.org/variant/17-42449775-C-T

Supplementary Table S1 & S2 Proband and Variant Information:

Case10: GT11, Female, 54, French and German

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: HP:0000421, HP:0000225, HP:0000132

(Epistaxis, gingival bleeding, menorrhagia)

CaseHPOFreeText: Spontaneous bruising

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: Flow cytometry showed 10-15% variant expression of αIIbβ3 (See Supplementary Table 1)

PlateletAggregation: Absent platelet aggregation (See Supplementary Table 1)

CasePreviousTesting: Sanger sequencing of ITGA2B and ITGB3

Gene: ITGA2B

Variant: NM_000419.3:c.1073G>A (p.Arg358His) and NM_000419.3:c.1234G>A (p.Gly412Arg)

LegacyVariant: N/A

ClinVar: 2896 and 381748

CAiD: CA115839 and CA8603182

gnomAD: MAF in the Latino population is 0.0001453 http://gnomad.broadinstitute.org/variant/17-42458406-C-T

Supplementary Table S1 & S2 Proband and Variant Information:

Case30: GT34, Male, 15 years old, US

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: HP:0000421, HP:0002239

(Epistaxis, GI bleeding)

CaseHPOFreeText: N/A

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: Flow cytometry showed <5% expression of αIIbβ3 (See Supplementary Table 1)

PlateletAggregation: Absent platelet aggregation (See Supplementary Table 1)

CasePreviousTesting: Sanger sequencing of ITGA2B and ITGB3

Gene: ITGA2B

Variant: NM_000419.3:c.1553T>A (p.Ile518Asn) and NM_000419.3:c.1946+3G>T

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA8603038 and CA626121071

gnomAD: MAF in the European (non-Finnish) is 0.000008790 http://gnomad.broadinstitute.org/variant/17-42457661-A-T and MAF in the African population is 0.000 http://gnomad.broadinstitute.org/variant/17-42456008-C-A

Supplementary Table S1 & S2 Proband and Variant Information:

Case25: GT28, Male, 36, French/Syrian

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: Affected sister (See Supplemental Table 1)

ParentalGenotype: N/A

CasePresentingHPOs: N/A

CaseHPOFreeText: N/A

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: Flow cytometry showed 5-10% expression of αIIbβ3 (See Supplementary Table 1)

PlateletAggregation: Absent platelet aggregation (See Supplementary Table 1)

CasePreviousTesting: Sanger sequencing of ITGA2B and ITGB3

Gene: ITGA2B

Variant: "LR Dup" (See Supplementary Table 1)

LegacyVariant: N/A

ClinVar: N/A

CAiD: N/A

gnomAD: N/A

Supplementary Table S1 & S2 Proband and Variant Information:

Case34: GT36b, Male, 60 years old, Spanish

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: Affected sisters who are proband 36a and 36c in this study

ParentalGenotype: N/A

CasePresentingHPOs: HP:0004406

(Recurrent epistaxis)

CaseHPOFreeText: Embolism of the submaxillary artery

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: Flow cytometry showed <5% expression of αIIbβ3 (See Supplementary Table 1)

PlateletAggregation: Absent platelet aggregation (See Supplementary Table 1)

CasePreviousTesting: Sanger sequencing of ITGA2B and ITGB3

Gene: ITGA2B

Variant: NM_000419.3:c.131G>T (p.Gly44Val) and NM_000419.3:c.1440-13_1440-1de (p.Arg480Serfs*106)

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA399806881 and CA913184940

gnomAD: N/A

Supplementary Table S1 & S2 Proband and Variant Information:

Case66: GT69, Female, 32 years old, French

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: HP:0000978, HP:0000979, HP:0004406, HP:0000132, HP:0004846

(Bruising, purpura, recurrent epistaxis, menorrhagia, prolonged bleeding after surgery)

CaseHPOFreeText: N/A

CaseNotHPOs: HP:0006298 (Prolonged bleeding after dental extraction)

CaseNotHPOsFreeText: N/A

ProteinExpression: Flow cytometry showed <5% expression of αIIbβ3 (See Supplementary Table 1)

PlateletAggregation: Absent platelet aggregation (See Supplementary Table 1)

CasePreviousTesting: Sanger sequencing of ITGA2B and ITGB3

Gene: ITGA2B

Variant: NM_000419.3:c.1878G>C (p.Gln626His)

LegacyVariant: N/A

ClinVar: 2903

CAiD: CA115852

gnomAD: N/A

Supplementary Table S1 & S2 Proband and Variant Information:

Case32: GT35b, Female, 16 years old, USA

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: Affected sister who is 35a in this study (See Supplementary Table S1)

ParentalGenotype: N/A

CasePresentingHPOs: HP:0000421, HP:0002239

(Epistaxis, GI bleeding)

CaseHPOFreeText: N/A

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: Flow cytometry showed <5% expression of αIIbβ3 (See Supplementary Table 1)

PlateletAggregation: Absent platelet aggregation (See Supplementary Table 1)

CasePreviousTesting: Sanger sequencing of ITGA2B and ITGB3

Gene: ITGA2B and ITGB3

Variant: ITGB3: NM_000212.2:c.392G>C (p.Arg131Pro) and NM_000212.2:c.777+1G>A ITGA2B: NM_000419.3:c.2264G>A (p.Arg755Gln)

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA8622954, CA8623036, CA8602771

gnomAD: MAF in the African population is 0.00006152 http://gnomad.broadinstitute.org/variant/17-45361839-G-C, MAF in the Latino population is 0.0006774 http://gnomad.broadinstitute.org/variant/17-45363789-G-A, MAF in the Latino population is 0.0001903 http://gnomad.broadinstitute.org/variant/17-42454380-C-T

Supplementary Table S1 & S2 Proband and Variant Information:

Case16: GT19, Female, 44, French (Gypsy)

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: Brother and cousin are other affected family members (This is all the information we are given, see Supplementary Table 1)

ParentalGenotype: N/A

CasePresentingHPOs: HP:0000978, HP:0000132, HP:0000421, HP:0000225

(Easy bruising, menorrhagia, epistaxis, gingival bleeding)

CaseHPOFreeText: N/A

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: Flow cytometry showed <5% expression of αIIbβ3 (See Supplementary Table 1)

PlateletAggregation: Absent platelet aggregation (See Supplementary Table 1)

CasePreviousTesting: Sanger sequencing of ITGA2B and ITGB3

Gene: ITGA2B

Variant: NM_000419.3:c.1544+1G>A (p.Val513Leufs*71)

LegacyVariant: N/A

ClinVar: 2895

CAiD: CA10575473

gnomAD: N/A

Supplementary Table S1 & S2 Proband and Variant Information:

Case24: GT27, Female, 84 at death, French

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: HP:0031364, HP:0002239

(Ecchymosis, GI bleeding)

CaseHPOFreeText: Bleeding following trauma

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: Flow cytometry showed 5-10% expression of αIIbβ3 (See Supplementary Table 1)

PlateletAggregation: Absent platelet aggregation (See Supplementary Table 1)

CasePreviousTesting: Sanger sequencing of ITGA2B and ITGB3

Gene: ITGA2B

Variant: NM_000419.3:c.1413C>G (p.Tyr471Ter) and NM_000419.3:c.2468G>A (p.Gly823Glu)

LegacyVariant: N/A

ClinVar:

CAiD: CA290950376 and CA399795351

gnomAD: MAF in the European (non-Finnish) population 0.000008791 http://gnomad.broadinstitute.org/variant/17-42457994-G-C MAF in African population is 0.000 http://gnomad.broadinstitute.org/variant/17-42453334-C-T

Supplementary Table S1 & S2 Proband and Variant Information:

Case61: GT64, Female, 26 years old, French

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: HP:0000421, HP:0000978, HP:0000132, HP:0000225, HP:0031364

(Epistaxis, easy bruising, menorrhagia, gingival bleeding, ecchymosis)

CaseHPOFreeText: Mouth and tonsil bleeding

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: Flow cytometry showed <5% expression of αIIbβ3 (See Supplementary Table 1)

PlateletAggregation: Absent platelet aggregation (See Supplementary Table 1)

CasePreviousTesting: Sanger sequencing of ITGA2B and ITGB3

Gene: ITGA2B

Variant: NM_000419.3:c.257T>C (p.Leu86Pro) and NM_000419.3:c.1440-13_1440-1del

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA290956162 and CA913184940

gnomAD: N/A

Supplementary Table S1 & S2 Proband and Variant Information:

Case3: GT4, Male, 6, French (Gypsy)

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: HP:0000967, HP:0001945 HP:0002719

(Petechiae, fever, infections, recurrent infections)

CaseHPOFreeText: Severe bleeding, hematomas since childbirth

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: Flow cytometry showed 50% expression of αIIbβ3 and no binding of PAC-1 after activation (See Supplementary Table 1)

PlateletAggregation: Absent platelet aggregation (See Supplementary Table 1)

CasePreviousTesting: Sanger sequencing of ITGA2B and ITGB3

Gene: ITGA2B

Variant: NM_000419.3:c.1544+1G>A (p.Val513Leufs*71)

LegacyVariant: N/A

ClinVar: 2895

CAiD: CA10575473

gnomAD: N/A

Supplementary Table S1 & S2 Proband and Variant Information:

Case18: GT21, Female, 61, French

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: HP:0000421, HP:0002239

(Epistaxis, GI bleeding)

CaseHPOFreeText: N/A

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: Flow cytometry showed <5% expression of αIIbβ3 (See Supplementary Table 1)

PlateletAggregation: Absent platelet aggregation (See Supplementary Table 1)

CasePreviousTesting: Sanger sequencing of ITGA2B and ITGB3

Gene: ITGA2B

Variant: NM_000419.3:c.1440-13_1440-1del (p.Arg480Serfs*106) and NM_000419.3:c.2864T>A (p.Leu955Gln)

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA913184940 and CA399791171

gnomAD: N/A

Supplementary Table S1 & S2 Proband and Variant Information:

Case63: GT66, Female, 15 years old, French/Ko

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: Affected cousin (this is all the information we are provided with)

ParentalGenotype: N/A

CasePresentingHPOs: HP:0000175, HP:0000225, HP:0000421, HP:0031364

(Cleft palate, gingival bleeding, epistaxis, ecchymosis)

CaseHPOFreeText: Hematomas

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: Flow cytometry showed <5% expression of αIIbβ3 (See Supplementary Table 1)

PlateletAggregation: Absent platelet aggregation (See Supplementary Table 1)

CasePreviousTesting: Sanger sequencing of ITGA2B and ITGB3

Gene: ITGA2B

Variant: NM_000419.3:c.1879-2A>G

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA290949031

gnomAD: N/A

Supplementary Table S1 & S2 Proband and Variant Information:

Case39: GT40, Female, 17 years old, Pankistani

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: HP:0000421, HP:0030140

(Epistaxis, bleeding from mouth)

CaseHPOFreeText: Heavy bleeding at menarche

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: Flow cytometry showed <5% expression of αIIbβ3 (See Supplementary Table 1)

PlateletAggregation: Absent platelet aggregation (See Supplementary Table 1)

CasePreviousTesting: Sanger sequencing of ITGA2B and ITGB3

Gene: ITGA2B

Variant: NM_000419.3:c.857T>A (p.Val286Asp)

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA399805011

gnomAD: N/A

Supplementary Table S1 & S2 Proband and Variant Information:

Case71: GT75, Female, 9 years old, French/African

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: HP:0031364, HP:0000421, HP:0000225

(Ecchymosis, epistaxis, gingival bleeding)

CaseHPOFreeText: Lots of deciduous teeth with bleeding, hematomas in the eye and under the clavicle

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: Flow cytometry showed less than 5% αIIbβ3 (See Supplementary Table 1)

PlateletAggregation: Absent platelet aggregation (See Supplementary Table 1)

CasePreviousTesting: Sanger sequencing of ITGA2B and ITGB3

Gene: ITGA2B

Variant: NM_000419.3:c.*165T>C

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA915940530

gnomAD: N/A

Supplementary Table S1 & S2 Proband and Variant Information:

Case57: GT58, Male, 14, Argentinian/European

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: HP:0000421, HP:0000967, HP:0000225, HP:0011886

(Epistaxis, petechia, gingival bleeding, hyphema)

CaseHPOFreeText: N/A

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: Flow cytometry showed <5% expression of αIIbβ3 (See Supplementary Table 1)

PlateletAggregation: Absent platelet aggregation (See Supplementary Table 1)

CasePreviousTesting: Sanger sequencing of ITGA2B and ITGB3

Gene: ITGA2B

Variant: NM_000419.3:c.601G>A (p.Gly201Ser)

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA399805612

gnomAD: N/A

Supplementary Table S1 & S2 Proband and Variant Information:

Case49: GT49, Female, 16 years old, French/Spanish

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: HP:0031364, HP:0000421

(Ecchymosis, epistaxis)

CaseHPOFreeText: Post-traumatic hematomas, proband has severe epistaxis

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: Flow cytometry showed 5-10% expression of αIIbβ3 (See Supplementary Table 1)

PlateletAggregation: Absent platelet aggregation (See Supplementary Table 1)

CasePreviousTesting: Sanger sequencing of ITGA2B and ITGB3

Gene: ITGA2B

Variant: NM_000419.3:c.1440-13_1440-1del (p.Arg480Serfs*106) and NM_000419.3:c.2113T>C (p.Clys705Arg)

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA913184940 and CA8602816

gnomAD: MAF in the European (non-Finnish) population is 0.000008792 http://gnomad.broadinstitute.org/variant/17-42455140-A-G

Supplementary Table S1 & S2 Proband and Variant Information:

Case41: GT41b, Male, 13 years old, Chinese

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: Affected sister is 41a in this study (See Supplemental Table S1)

ParentalGenotype: N/A

CasePresentingHPOs: HP:0000421, HP:0000978

(Epistaxis, easy bruising)

CaseHPOFreeText: N/A

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: Flow cytometry showed <5% expression of αIIbβ3 (See Supplementary Table 1)

PlateletAggregation: Absent platelet aggregation (See Supplementary Table 1)

CasePreviousTesting: Sanger sequencing of ITGA2B and ITGB3

Gene: ITGA2B

Variant: NM_000419.3:c.91del (p.Ala31Profs2) and NM_000419.3:c.2915dup (p.Leu973Alafs63)

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA913203486 and CA8602531

gnomAD: MAF in the East Asian population is 0.0001088 http://gnomad.broadinstitute.org/variant/17-42452054-C-CG

Case1: (Proband CabGT-1) Male, age not specified, China

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: N/A

CaseHPOFreeText: N/A

CaseNotHPOs: N/A

ProteinExpression: Surface expression detected by flow cytometry showed <5% GPIIb and <5% GPIIIa

Platelet Aggregation: N/A

CasePreviousTesting: Promoter and exon sequences of aIIb and b3 genes were amplified and directly sequence

Gene: ITGA2B

Variant: NM_000419.3:c.531T>A (p.Cys177Ter)

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA290955739

gnomAD N/A

Case7: (Proband CabGT-7) Female, age not specified, Caucasian

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: N/A

CaseHPOFreeText: N/A

CaseNotHPOs: N/A

ProteinExpression: Flow cytometry showed <5% GPIIb and 11% GPIIIa surface expression

Platelet Aggregation: N/A

CasePreviousTesting: Promoter and exon sequences of aIIb and b3 genes were amplified and directly sequence

Gene: ITGA2B

Variant: The first variant was found to be: NM_000419.3:c.1563T>A (p.Cys521Ter) and they did not find the second mutation

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA290950094

gnomAD N/A

Case3: (Proband CabGT-3), Male, age not specified, European Caucasian

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: N/A

CaseHPOFreeText: N/A

CaseNotHPOs: N/A

ProteinExpression: N/A

Platelet Aggregation: N/A

CasePreviousTesting: Promoter and exon sequences of aIIb and b3 genes were amplified and directly sequence

Gene: ITGA2B

Variant: NM_000419.3:c.1214T>C (p.Ile405Thr) and c.1442-13_1442-1del, which is not showing up in CAR (Unregistered Variant?)

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA290950815 (p.Ile405Thr)

gnomAD N/A

Case9: (Proband CabGT-9), Female, age not specified, Kuwait

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: N/A

CaseHPOFreeText: N/A

CaseNotHPOs: N/A

ProteinExpression: N/A

Platelet Aggregation: N/A

CasePreviousTesting: Promoter and exon sequences of aIIb and b3 genes were amplified and directly sequence

Gene: ITGA2B

Variant: NM_000419.3:c.1879-2A>G

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA290949031

gnomAD N/A

Case17: (Proband CabGT-17), Male, age not specified, North African

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: N/A

CaseHPOFreeText: N/A

CaseNotHPOs: N/A

ProteinExpression: Flow cytometry showed 13% GPIIb and 27% GPIIIa surface expression

Platelet Aggregation: N/A

CasePreviousTesting: Promoter and exon sequences of aIIb and b3 genes were amplified and directly sequence

Gene: ITGA2B

Variant: NM_000419.3:c.2929C>T (p.Arg977Ter) and the other mutation could not be found

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA8602528

gnomAD MAF in the South Asian population is 0.00003266 https://gnomad.broadinstitute.org/variant/17-42452041-G-A

Case4: (Proband CabGT-4), Female, age not specified, Caucasian

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: N/A

CaseHPOFreeText: N/A

CaseNotHPOs: N/A

ProteinExpression: Flow cytometry showed surface expression as 53% GPIIb and 66% GPIIIa

Platelet Aggregation: N/A

CasePreviousTesting: Promoter and exon sequences of aIIb and b3 genes were amplified and directly sequence

Gene: ITGA2B

Variant: c.1442-13_1442-1del (This variant does not show up in the CAR or ClinVar)

LegacyVariant: N/A

ClinVar: N/A

CAiD: N/A

gnomAD N/A

Case18: (Proband CabGT-18), Gender, age and ethnicity were not specified

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: N/A

CaseHPOFreeText: N/A

CaseNotHPOs: N/A

ProteinExpression: N/A

Platelet Aggregation: N/A

CasePreviousTesting: Promoter and exon sequences of aIIb and b3 genes were amplified and directly sequence

Gene: ITGA2B

Variant: NM_000419.3:c.2944G>A (p.Val982Met) and NM_000419.3:c.2965G>A (p.Ala989Thr)

LegacyVariant: N/A

ClinVar: 381747 (p.Val982Met) and 417951 (p.Ala989Thr)

CAiD: CA16608466 (p.Val982Met) and CA8602498 (p.Ala989Thr)

gnomAD MAF in the European (non-Finnish) population is 0.00006486 https://gnomad.broadinstitute.org/variant/17-42451838-C-T and MAF in the Other popeulation for (p.Ala989Thr) is 0.001939 https://gnomad.broadinstitute.org/variant/17-42451817-C-T

Case13: (Proband CabGT-13) Male, age not specified, Japanese

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: N/A

CaseHPOFreeText: N/A

CaseNotHPOs: N/A

ProteinExpression: Flow cytometry showed <5% of GPIIIa and GPIIb surface expression

Platelet Aggregation: N/A

CasePreviousTesting: Promoter and exon sequences of aIIb and b3 genes were amplified and directly sequence

Gene: ITGA2B

Variant: NM_000419.3:c.2333A>C (p.Gln778Pro)

LegacyVariant: N/A

ClinVar: 225393

CAiD: CA290947544

gnomAD MAF in the East Asian population is 0.0001087 https://gnomad.broadinstitute.org/variant/17-42453691-T-G

Case11: (Proband CabGT-11) Female, age not specified, Caucasian

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: N/A

CaseHPOFreeText: N/A

CaseNotHPOs: N/A

ProteinExpression: Flow cytometry showed <5% GPIIb and 20% GPIIIa surface expression

Platelet Aggregation: N/A

CasePreviousTesting: Promoter and exon sequences of aIIb and b3 genes were amplified and directly sequence

Gene: ITGA2B

Variant: NM_000419.3:c.1787T>C (p.Ile596Thr)

LegacyVariant: N/A

ClinVar: 2900

CAiD: CA115846

gnomAD MAF in the European (non-Finnish) population is 0.0001325 https://gnomad.broadinstitute.org/variant/17-42457148-A-G

Case2: Male, 10 years old, Andra Pradesh India

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: HP:0000421, HP:0031364, HP:0002239, HP:0000225

(Epistaxis, ecchymosis, GI bleeding, gingival bleeding)

CaseHPOFreeText: N/A

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: See Table 1 for values

PlateletAggregation: See Table 1 for values

CasePreviousTesting: PCR amplification of ITAG2B and ITGB3

Gene: ITGA2B

Variant: NM_000419.3:c.475G>A (p.Gly159Ser)

LegacyVariant: (p.Gly128Ser)

ClinVar: N/A

CAiD: CA8603454

gnomAD: MAF in the South Asian population is 0.00003267 https://gnomad.broadinstitute.org/variant/17-42463018-C-T

Case1: Male, 13 years old, Andra Pradesh India

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: HP:0006298, HP:0000421, HP:0000967, HP:0002239, HP:0000225

(Prolonged bleeding after dental extraction, epistaxis, petechiae, GI bleeding, gingival bleeding)

CaseHPOFreeText: N/A

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: See Table 1 for values

PlateletAggregation: See Table 1 for values

CasePreviousTesting: PCR amplification of ITAG2B and ITGB3

Gene: ITGA2B

Variant: NM_000419.3:c.48G>A (p.Trp16Ter)

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA399807046

gnomAD: N/A

Case5: Female, 28 years old, Goa India

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: HP:0031364, HP:0002239, HP:0000225, HP:0006298, HP:0000967, HP:0000132

(Ecchymosis, GI bleeding, gingival bleeding, prolonged bleeding after tooth extraction, petechiae, menorrhagia)

CaseHPOFreeText: N/A

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: See Table 1 for values

PlateletAggregation: See Table 1 for values

CasePreviousTesting: PCR amplification of ITAG2B and ITGB3

Gene: ITGA2B

Variant: IVS15-1 G>A can't be found in the allele registry by me I am noting it as Unreg

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA8603039

gnomAD: N/A

Case3: Male, 6 years old, Andra Pradesh India

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: HP:0031364, HP:0000225

(Ecchymosis, gingival bleeding)

CaseHPOFreeText: Bleeding during tooth extraction

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: See Table 1 for values

PlateletAggregation: See Table 1 for values

CasePreviousTesting: PCR amplification of ITAG2B and ITGB3

Gene: ITGA2B

Variant: NM_000419.3:c.952T>A (p.Ser318Leu)

LegacyVariant: (p.Ser287Leu)

ClinVar: N/A

CAiD: CA399804792

gnomAD: N/A

Case1: Male, French, age not specified

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A "Has no surviving close relatives"

ParentalGenotype:

CasePresentingHPOs: HP:0002239 (GI bleeding)

CaseHPOFreeText: Hemorrhage

CaseNotHPOs: HP:0000421, HP:0000225

(Epistaxis, gingival bleeding)

CaseNotHPOsFreeText: N/A

ProteinExpression:

PlateletAggregation: Total lack of platelet aggregation in response to physiologic agonists and also defective clot retraction

CasePreviousTesting: Direct sequencing of all exons and splice sites of ITGA2B was performed and sequencing of the 15 exons, splice sites, and promoter of ITGB3 was also performed

Gene: ITGA2B

Variant: NM_000419.3:c.1413C>G (p.Tyr471Ter) and NM_000419.3:c.1882C>T (p.Arg628Ter)

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA290950376 and CA399801310

gnomAD: MAF in European (non-Finnish) population 0.000008791 http://gnomad.broadinstitute.org/variant/17-42457994-G-C and MAF in the Latino population is 0.00003983 http://gnomad.broadinstitute.org/variant/17-42456075-G-A

Supplementary Table S1:

Case23: GT26, French, gender and age not specified

DiseaseAssertion: Glanzmann thrombasthenia type I

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: N/A

CaseHPOFreeText: All patients had a life-long history of mucocutaneous bleeding

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: All patients in this study met the clinical and platelet function requirements for GT-- this includes an absent or strongly reduced expression of alphaIIbBeta3 in platelets

PlateletAggregation: All patients in this study met the clinical and platelet function requirements for GT-- this includes absent or severely reduced platelet aggregation with at least three physiological agonists

CasePreviousTesting: Sanger sequencing was performed. Sanger sequencing ensured coverage of all exons and splice sties of the ITGA2B and ITGB3 genes and extended 300-500 bp into the introns as well as including the UTR. They sequenced 416 bp upstream of the ITGA2B promoter and 463 bp upstream of the ITGB3 promoter. In total they sequenced 51.2% of the ITGA2B gene and 19.4% of the larger ITGB3 gene

Gene: ITGA2B

Variant: NM_000419.3:c.1073G>A (p.Arg358His)

LegacyVariant: N/A

ClinVar: 2896

CAiD: CA115839

gnomAD: N/A

Supplementary Table S1:

Case10: GT11, French/German, age and gender not specified

DiseaseAssertion: Glanzmann thrombasthenia type I

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: N/A

CaseHPOFreeText: All patients had a life-long history of mucocutaneous bleeding

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: All patients in this study met the clinical and platelet function requirements for GT-- this includes an absent or strongly reduced expression of alphaIIbBeta3 in platelets

PlateletAggregation: All patients in this study met the clinical and platelet function requirements for GT-- this includes absent or severely reduced platelet aggregation with at least three physiological agonists

CasePreviousTesting: Sanger sequencing was performed. Sanger sequencing ensured coverage of all exons and splice sties of the ITGA2B and ITGB3 genes and extended 300-500 bp into the introns as well as including the UTR. They sequenced 416 bp upstream of the ITGA2B promoter and 463 bp upstream of the ITGB3 promoter. In total they sequenced 51.2% of the ITGA2B gene and 19.4% of the larger ITGB3 gene

Gene: ITGA2B

Variant: NM_000419.3:c.1073G>A (p.Arg385His) NM_000419.3:c.1234G>A (p.Gly412Arg)

LegacyVariant: N/A

ClinVar: 2896 and 381748

CAiD: CA115839 and CA8603182

gnomAD: MAF in the Latino population for (p.Gly412Arg) is 0.0001453 https://gnomad.broadinstitute.org/variant/17-42458406-C-T

Supplementary Table S1:

Case65: GT76, French, gender and age are not specified

DiseaseAssertion: Glanzmann thrombasthenia type I

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: N/A

CaseHPOFreeText: All patients had a life-long history of mucocutaneous bleeding

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: All patients in this study met the clinical and platelet function requirements for GT-- this includes an absent or strongly reduced expression of alphaIIbBeta3 in platelets

PlateletAggregation: All patients in this study met the clinical and platelet function requirements for GT-- this includes absent or severely reduced platelet aggregation with at least three physiological agonists

CasePreviousTesting: Sanger sequencing was performed. Sanger sequencing ensured coverage of all exons and splice sties of the ITGA2B and ITGB3 genes and extended 300-500 bp into the introns as well as including the UTR. They sequenced 416 bp upstream of the ITGA2B promoter and 463 bp upstream of the ITGB3 promoter. In total they sequenced 51.2% of the ITGA2B gene and 19.4% of the larger ITGB3 gene

Gene: ITGA2B

Variant: NM_000419.3:c.2421G>A (p.Trp807Ter)

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA399796017

gnomAD: N/A

Supplementary Table S1:

Case15: GT18, French, gender and age not specified

DiseaseAssertion: Glanzmann thrombasthenia type I

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: N/A

CaseHPOFreeText: All patients had a life-long history of mucocutaneous bleeding

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: All patients in this study met the clinical and platelet function requirements for GT-- this includes an absent or strongly reduced expression of alphaIIbBeta3 in platelets

PlateletAggregation: All patients in this study met the clinical and platelet function requirements for GT-- this includes absent or severely reduced platelet aggregation with at least three physiological agonists

CasePreviousTesting: Sanger sequencing was performed. Sanger sequencing ensured coverage of all exons and splice sties of the ITGA2B and ITGB3 genes and extended 300-500 bp into the introns as well as including the UTR. They sequenced 416 bp upstream of the ITGA2B promoter and 463 bp upstream of the ITGB3 promoter. In total they sequenced 51.2% of the ITGA2B gene and 19.4% of the larger ITGB3 gene

Gene: ITGA2B

Variant: NM_000419.3:c.1201G>T (p.Gly401Cys) and NM_000419.3:c.2800G>T (p.Val934Phe)

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA399804280 and CA290946484

gnomAD: N/A

Supplementary Table S1:

Case27: GT31, "USA"- what the supp table stated, gender and age are not specified here at this time

DiseaseAssertion: Glanzmann thrombasthenia type I

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: N/A

CaseHPOFreeText: All patients had a life-long history of mucocutaneous bleeding

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: All patients in this study met the clinical and platelet function requirements for GT-- this includes an absent or strongly reduced expression of alphaIIbBeta3 in platelets

PlateletAggregation: All patients in this study met the clinical and platelet function requirements for GT-- this includes absent or severely reduced platelet aggregation with at least three physiological agonists

CasePreviousTesting: Sanger sequencing was performed. Sanger sequencing ensured coverage of all exons and splice sties of the ITGA2B and ITGB3 genes and extended 300-500 bp into the introns as well as including the UTR. They sequenced 416 bp upstream of the ITGA2B promoter and 463 bp upstream of the ITGB3 promoter. In total they sequenced 51.2% of the ITGA2B gene and 19.4% of the larger ITGB3 gene

Gene: ITGA2B

Variant: NM_000419.3:c.1771dup (p.Asp591Glyfs*47) and NM_000419.3:c.3061-1G>A

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA915940334 and CA399787972

gnomAD: N/A

Supplementary Table S1:

Case63: GT74, French, gender and age are not specified

DiseaseAssertion: Glanzmann thrombasthenia type I

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: N/A

CaseHPOFreeText: All patients had a life-long history of mucocutaneous bleeding

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: All patients in this study met the clinical and platelet function requirements for GT-- this includes an absent or strongly reduced expression of alphaIIbBeta3 in platelets

PlateletAggregation: All patients in this study met the clinical and platelet function requirements for GT-- this includes absent or severely reduced platelet aggregation with at least three physiological agonists

CasePreviousTesting: Sanger sequencing was performed. Sanger sequencing ensured coverage of all exons and splice sties of the ITGA2B and ITGB3 genes and extended 300-500 bp into the introns as well as including the UTR. They sequenced 416 bp upstream of the ITGA2B promoter and 463 bp upstream of the ITGB3 promoter. In total they sequenced 51.2% of the ITGA2B gene and 19.4% of the larger ITGB3 gene

Gene: ITGA2B

Variant: NM_000419.3:c.1214T>C (p.Ile405Thr) and NM_000419.3:c.1440-13_1440-1del (p.Arg480SerfsTer106)

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA290950815 and CA913184940

gnomAD: N/A

Supplementary Table S1:

Case64: GT75, French/African, gender and age not specified

DiseaseAssertion: Glanzmann thrombasthenia type I

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: N/A

CaseHPOFreeText: All patients had a life-long history of mucocutaneous bleeding

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: All patients in this study met the clinical and platelet function requirements for GT-- this includes an absent or strongly reduced expression of alphaIIbBeta3 in platelets

PlateletAggregation: All patients in this study met the clinical and platelet function requirements for GT-- this includes absent or severely reduced platelet aggregation with at least three physiological agonists

CasePreviousTesting: Sanger sequencing was performed. Sanger sequencing ensured coverage of all exons and splice sties of the ITGA2B and ITGB3 genes and extended 300-500 bp into the introns as well as including the UTR. They sequenced 416 bp upstream of the ITGA2B promoter and 463 bp upstream of the ITGB3 promoter. In total they sequenced 51.2% of the ITGA2B gene and 19.4% of the larger ITGB3 gene

Gene: ITGA2B

Variant: NM_000419.3:c.*165T>C

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA915940530

gnomAD: N/A

Supplementary Table S1:

Case33: GT39a, Sweden, gender and ethnicity not specified

DiseaseAssertion: Glanzmann thrombasthenia type I

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: N/A

CaseHPOFreeText: All patients had a life-long history of mucocutaneous bleeding

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: All patients in this study met the clinical and platelet function requirements for GT-- this includes an absent or strongly reduced expression of alphaIIbBeta3 in platelets

PlateletAggregation: All patients in this study met the clinical and platelet function requirements for GT-- this includes absent or severely reduced platelet aggregation with at least three physiological agonists

CasePreviousTesting: Sanger sequencing was performed. Sanger sequencing ensured coverage of all exons and splice sties of the ITGA2B and ITGB3 genes and extended 300-500 bp into the introns as well as including the UTR. They sequenced 416 bp upstream of the ITGA2B promoter and 463 bp upstream of the ITGB3 promoter. In total they sequenced 51.2% of the ITGA2B gene and 19.4% of the larger ITGB3 gene

Gene: ITGA2B

Variant: NM_000419.3:c.1882C>T (p.Arg628Ter)

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA399801310

gnomAD: MAF in the Latino population is 0.00003983 https://gnomad.broadinstitute.org/variant/17-42456075-G-A

Supplementary Table S1:

Case56: GT66, French/Korean, age and gender are not specified here

DiseaseAssertion: Glanzmann thrombasthenia type I

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: N/A

CaseHPOFreeText: All patients had a life-long history of mucocutaneous bleeding

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: All patients in this study met the clinical and platelet function requirements for GT-- this includes an absent or strongly reduced expression of alphaIIbBeta3 in platelets

PlateletAggregation: All patients in this study met the clinical and platelet function requirements for GT-- this includes absent or severely reduced platelet aggregation with at least three physiological agonists

CasePreviousTesting: Sanger sequencing was performed. Sanger sequencing ensured coverage of all exons and splice sties of the ITGA2B and ITGB3 genes and extended 300-500 bp into the introns as well as including the UTR. They sequenced 416 bp upstream of the ITGA2B promoter and 463 bp upstream of the ITGB3 promoter. In total they sequenced 51.2% of the ITGA2B gene and 19.4% of the larger ITGB3 gene

Gene: ITGA2B

Variant: NM_000419.3:c.1879-2A>G

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA290949031

gnomAD: N/A

Supplementary Table S1:

Case38: GT44, French, age and gender not specified

DiseaseAssertion: Glanzmann thrombasthenia type I

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: N/A

CaseHPOFreeText: All patients had a life-long history of mucocutaneous bleeding

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: All patients in this study met the clinical and platelet function requirements for GT-- this includes an absent or strongly reduced expression of alphaIIbBeta3 in platelets

PlateletAggregation: All patients in this study met the clinical and platelet function requirements for GT-- this includes absent or severely reduced platelet aggregation with at least three physiological agonists

CasePreviousTesting: Sanger sequencing was performed. Sanger sequencing ensured coverage of all exons and splice sties of the ITGA2B and ITGB3 genes and extended 300-500 bp into the introns as well as including the UTR. They sequenced 416 bp upstream of the ITGA2B promoter and 463 bp upstream of the ITGB3 promoter. In total they sequenced 51.2% of the ITGA2B gene and 19.4% of the larger ITGB3 gene

Gene: ITGA2B

Variant: NM_000419.3:c.1357C>T (p.Arg453Ter)

LegacyVariant: N/A

ClinVar: 631773

CAiD: CA399803529

gnomAD: N/A

Supplementary Table S1:

Case54: GT64, French, age and gender are not specified

DiseaseAssertion: Glanzmann thrombasthenia type I

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: N/A

CaseHPOFreeText: All patients had a life-long history of mucocutaneous bleeding

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: All patients in this study met the clinical and platelet function requirements for GT-- this includes an absent or strongly reduced expression of alphaIIbBeta3 in platelets

PlateletAggregation: All patients in this study met the clinical and platelet function requirements for GT-- this includes absent or severely reduced platelet aggregation with at least three physiological agonists

CasePreviousTesting: Sanger sequencing was performed. Sanger sequencing ensured coverage of all exons and splice sties of the ITGA2B and ITGB3 genes and extended 300-500 bp into the introns as well as including the UTR. They sequenced 416 bp upstream of the ITGA2B promoter and 463 bp upstream of the ITGB3 promoter. In total they sequenced 51.2% of the ITGA2B gene and 19.4% of the larger ITGB3 gene

Gene: ITGA2B

Variant: NM_000419.3:c.257T>C (p.Leu86Pro) and NM_000419.3:c.1440-13_1440-1del (p.Arg480SerfsTer106)

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA290956162 and CA913184940

gnomAD: N/A

Supplementary Table S1:

Case7: GT8, gender and age not specified

DiseaseAssertion: Glanzmann thrombasthenia type I

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: N/A

CaseHPOFreeText: All patients had a life-long history of mucocutaneous bleeding

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: All patients in this study met the clinical and platelet function requirements for GT-- this includes an absent or strongly reduced expression of alphaIIbBeta3 in platelets

PlateletAggregation: All patients in this study met the clinical and platelet function requirements for GT-- this includes absent or severely reduced platelet aggregation with at least three physiological agonists

CasePreviousTesting: Sanger sequencing was performed. Sanger sequencing ensured coverage of all exons and splice sties of the ITGA2B and ITGB3 genes and extended 300-500 bp into the introns as well as including the UTR. They sequenced 416 bp upstream of the ITGA2B promoter and 463 bp upstream of the ITGB3 promoter. In total they sequenced 51.2% of the ITGA2B gene and 19.4% of the larger ITGB3 gene

Gene: ITGA2B

Variant: NM_000419.3:c.2348+5G>C

LegacyVariant:

ClinVar: N/A

CAiD: CA290947484

gnomAD: N/A

Supplementary Table S1:

Case50: GT58, Argentinian/European, gender and age are not specified

DiseaseAssertion: Glanzmann thrombasthenia type I

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: N/A

CaseHPOFreeText: All patients had a life-long history of mucocutaneous bleeding

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: All patients in this study met the clinical and platelet function requirements for GT-- this includes an absent or strongly reduced expression of alphaIIbBeta3 in platelets

PlateletAggregation: All patients in this study met the clinical and platelet function requirements for GT-- this includes absent or severely reduced platelet aggregation with at least three physiological agonists

CasePreviousTesting: Sanger sequencing was performed. Sanger sequencing ensured coverage of all exons and splice sties of the ITGA2B and ITGB3 genes and extended 300-500 bp into the introns as well as including the UTR. They sequenced 416 bp upstream of the ITGA2B promoter and 463 bp upstream of the ITGB3 promoter. In total they sequenced 51.2% of the ITGA2B gene and 19.4% of the larger ITGB3 gene

Gene: ITGA2B

Variant: NM_000419.3:c.601G>A (p.Gly201Ser)

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA399805612

gnomAD: N/A

Supplementary Table S1:

Case61: GT72, French, age and ethnicity are not specified

DiseaseAssertion: Glanzmann thrombasthenia type I

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: N/A

CaseHPOFreeText: All patients had a life-long history of mucocutaneous bleeding

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: All patients in this study met the clinical and platelet function requirements for GT-- this includes an absent or strongly reduced expression of alphaIIbBeta3 in platelets

PlateletAggregation: All patients in this study met the clinical and platelet function requirements for GT-- this includes absent or severely reduced platelet aggregation with at least three physiological agonists

CasePreviousTesting: Sanger sequencing was performed. Sanger sequencing ensured coverage of all exons and splice sties of the ITGA2B and ITGB3 genes and extended 300-500 bp into the introns as well as including the UTR. They sequenced 416 bp upstream of the ITGA2B promoter and 463 bp upstream of the ITGB3 promoter. In total they sequenced 51.2% of the ITGA2B gene and 19.4% of the larger ITGB3 gene

Gene: ITGA2B

Variant: NM_000419.3:c.2951C>A (p.Thr984Lys)

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA399790180

gnomAD: N/A

Supplementary Table S1:

Case16: GT19, French Gypsy, age and gender not specified

DiseaseAssertion: Glanzmann thrombasthenia type I

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: N/A

CaseHPOFreeText: All patients had a life-long history of mucocutaneous bleeding

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: All patients in this study met the clinical and platelet function requirements for GT-- this includes an absent or strongly reduced expression of alphaIIbBeta3 in platelets

PlateletAggregation: All patients in this study met the clinical and platelet function requirements for GT-- this includes absent or severely reduced platelet aggregation with at least three physiological agonists

CasePreviousTesting: Sanger sequencing was performed. Sanger sequencing ensured coverage of all exons and splice sties of the ITGA2B and ITGB3 genes and extended 300-500 bp into the introns as well as including the UTR. They sequenced 416 bp upstream of the ITGA2B promoter and 463 bp upstream of the ITGB3 promoter. In total they sequenced 51.2% of the ITGA2B gene and 19.4% of the larger ITGB3 gene

Gene: ITGA2B

Variant: NM_000419.3:c.1544+1G>A (p.Val513Leufs*106)

LegacyVariant: N/A

ClinVar: 2895

CAiD: CA10575473

gnomAD: N/A

Supplementary Table S1:

Case22: GT25, French, gender and age not specified

DiseaseAssertion: Glanzmann thrombasthenia type I

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: N/A

CaseHPOFreeText: All patients had a life-long history of mucocutaneous bleeding

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: All patients in this study met the clinical and platelet function requirements for GT-- this includes an absent or strongly reduced expression of alphaIIbBeta3 in platelets

PlateletAggregation: All patients in this study met the clinical and platelet function requirements for GT-- this includes absent or severely reduced platelet aggregation with at least three physiological agonists

CasePreviousTesting: Sanger sequencing was performed. Sanger sequencing ensured coverage of all exons and splice sties of the ITGA2B and ITGB3 genes and extended 300-500 bp into the introns as well as including the UTR. They sequenced 416 bp upstream of the ITGA2B promoter and 463 bp upstream of the ITGB3 promoter. In total they sequenced 51.2% of the ITGA2B gene and 19.4% of the larger ITGB3 gene

Gene: ITGA2B

Variant: NM_000419.3:c.1413C>G (p.Tyr471Ter) and NM_000419.3:c.1882C>T (p.Arg628Ter)

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA290950376 and CA399801310

gnomAD: MAF in the European (non-Finnish) population is 0.000008791 for (p.Tyr471Ter) and MAF in the Latino population is 0.00003983 for the (p.Arg628Ter) variant https://gnomad.broadinstitute.org/variant/17-42456075-G-A

Supplementary Table S1:

Case12: GT13, French, age and gender not specified

DiseaseAssertion: Glanzmann thrombasthenia type I

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: N/A

CaseHPOFreeText: All patients had a life-long history of mucocutaneous bleeding

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: All patients in this study met the clinical and platelet function requirements for GT-- this includes an absent or strongly reduced expression of alphaIIbBeta3 in platelets

PlateletAggregation: All patients in this study met the clinical and platelet function requirements for GT-- this includes absent or severely reduced platelet aggregation with at least three physiological agonists

CasePreviousTesting: Sanger sequencing was performed. Sanger sequencing ensured coverage of all exons and splice sties of the ITGA2B and ITGB3 genes and extended 300-500 bp into the introns as well as including the UTR. They sequenced 416 bp upstream of the ITGA2B promoter and 463 bp upstream of the ITGB3 promoter. In total they sequenced 51.2% of the ITGA2B gene and 19.4% of the larger ITGB3 gene

Gene: ITGA2B

Variant: NM_000419.3:c.682C>T (p.Gln228Ter) and NM_000419.3:c.1750C>T (p.Arg584Ter)

LegacyVariant: N/A

ClinVar: 2892

CAiD: CA399805421 and CA115834

gnomAD: MAF in the East Asian population is 0.0002176 https://gnomad.broadinstitute.org/variant/17-42457372-G-A

Supplementary Table S1:

Case45: GT52, Argentina/Brazil, gender and age not specified

DiseaseAssertion: Glanzmann thrombasthenia type I

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: N/A

CaseHPOFreeText: All patients had a life-long history of mucocutaneous bleeding

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: All patients in this study met the clinical and platelet function requirements for GT-- this includes an absent or strongly reduced expression of alphaIIbBeta3 in platelets

PlateletAggregation: All patients in this study met the clinical and platelet function requirements for GT-- this includes absent or severely reduced platelet aggregation with at least three physiological agonists

CasePreviousTesting: Sanger sequencing was performed. Sanger sequencing ensured coverage of all exons and splice sties of the ITGA2B and ITGB3 genes and extended 300-500 bp into the introns as well as including the UTR. They sequenced 416 bp upstream of the ITGA2B promoter and 463 bp upstream of the ITGB3 promoter. In total they sequenced 51.2% of the ITGA2B gene and 19.4% of the larger ITGB3 gene

Gene: ITGA2B

Variant: NM_000419.3:c.601G>A (p.Gly201Ser)

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA399805612

gnomAD: N/A

Supplementary Table S1:

Case58: GT, French, gender and age are not specified

DiseaseAssertion: Glanzmann thrombasthenia type I

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: N/A

CaseHPOFreeText: All patients had a life-long history of mucocutaneous bleeding

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: All patients in this study met the clinical and platelet function requirements for GT-- this includes an absent or strongly reduced expression of alphaIIbBeta3 in platelets

PlateletAggregation: All patients in this study met the clinical and platelet function requirements for GT-- this includes absent or severely reduced platelet aggregation with at least three physiological agonists

CasePreviousTesting: Sanger sequencing was performed. Sanger sequencing ensured coverage of all exons and splice sties of the ITGA2B and ITGB3 genes and extended 300-500 bp into the introns as well as including the UTR. They sequenced 416 bp upstream of the ITGA2B promoter and 463 bp upstream of the ITGB3 promoter. In total they sequenced 51.2% of the ITGA2B gene and 19.4% of the larger ITGB3 gene

Gene: ITGA2B

Variant: NM_000419.3:c.1413C>G (p.Tyr471Ter) and other other variant is stated as "LR deletion" so I will note it as an Unknown Variant

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA290950376

gnomAD: MAF in the European (non-Finnish) population is 0.000008791 https://gnomad.broadinstitute.org/variant/17-42457994-G-C

Case16: (M8) Male, 47 years old, French Gypsy

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: N/A

CaseHPOFreeText: Mucocutaneous bleeding

CaseNotHPOs: N/A

ProteinExpression: Failed to express alphaIIbbeta3 on the surface of their platelets

Platelet Aggregation: Absent platelet aggregation to all agonists (no mention for which agonists or response to ristocetin)

CasePreviousTesting: All the information we are given is "mutation screening of the ITGA2B and ITGB3 genes" the method for sequencing etc. was not stated

Gene: ITGA2B

Variant: NM_000419.3:c.1544+1G>A

LegacyVariant: N/A

ClinVar: 2895

CAiD: CA10575473

gnomAD N/A

Case13: (M15) Female, 42 years old, French Gypsy

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: N/A

CaseHPOFreeText: Mucocutaneous bleeding

CaseNotHPOs: N/A

ProteinExpression: Failed to express alphaIIbbeta3 on the surface of their platelets

Platelet Aggregation: Absent platelet aggregation to all agonists (no mention for which agonists or response to ristocetin)

CasePreviousTesting: All the information we are given is "mutation screening of the ITGA2B and ITGB3 genes" the method for sequencing etc. was not stated

Gene: ITGA2B

Variant: NM_000419.3:c.1544+1G>A

LegacyVariant: N/A

ClinVar: 2895

CAiD: CA10575473

gnomAD N/A

Case5: (GT5) Female, 55 years old, French

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: N/A

CaseHPOFreeText: Mucocutaneous bleeding

CaseNotHPOs: N/A

ProteinExpression: <5% surface expression levels of αIIbβ3

Platelet Aggregation: Absent platelet aggregation to all agonists (no mention for which agonists or response to ristocetin)

CasePreviousTesting: All the information we are given is "mutation screening of the ITGA2B and ITGB3 genes" the method for sequencing etc. was not stated

Gene: ITGA2B

Variant: NM_000419.3:c.1063G>A (p.Glu355Lys)

LegacyVariant: (p.Glu324Lys) (The paper gives legacy and current nomenclature)

ClinVar: 2899

CAiD: CA115844

gnomAD MAF in the European (non-Finnish) population is 0.00001978 https://gnomad.broadinstitute.org/variant/17-42461008-C-T

Case15: (M7) Male, 44 French Gypsy

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: N/A

CaseHPOFreeText: Mucocutaneous bleeding

CaseNotHPOs: N/A

ProteinExpression: Failed to express alphaIIbbeta3 on the surface of their platelets

Platelet Aggregation: Absent platelet aggregation to all agonists (no mention for which agonists or response to ristocetin)

CasePreviousTesting: All the information we are given is "mutation screening of the ITGA2B and ITGB3 genes" the method for sequencing etc. was not stated

Gene: ITGA2B

Variant: NM_000419.3:c.1544+1G>A

LegacyVariant: N/A

ClinVar: 2895

CAiD: CA10575473

gnomAD N/A

Case22: (M14) Female, 10 years old, French Gypsy

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: N/A

CaseHPOFreeText: Mucocutaneous bleeding

CaseNotHPOs: N/A

ProteinExpression: Failed to express alphaIIbbeta3 on the surface of their platelets

Platelet Aggregation: Absent platelet aggregation to all agonists (no mention for which agonists or response to ristocetin)

CasePreviousTesting: All the information we are given is "mutation screening of the ITGA2B and ITGB3 genes" the method for sequencing etc. was not stated

Gene: ITGA2B

Variant: NM_000419.3:c.1544+1G>A

LegacyVariant: N/A

ClinVar: 2895

CAiD: CA10575473

gnomAD N/A

Case21: (M13) Female, 10 years old, French Gypsy

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: N/A

CaseHPOFreeText: Mucocutaneous bleeding

CaseNotHPOs: N/A

ProteinExpression: Failed to express alphaIIbbeta3 on the surface of their platelets

Platelet Aggregation: Absent platelet aggregation to all agonists (no mention for which agonists or response to ristocetin)

CasePreviousTesting: All the information we are given is "mutation screening of the ITGA2B and ITGB3 genes" the method for sequencing etc. was not stated

Gene: ITGA2B

Variant: NM_000419.3:c.1544+1G>A

LegacyVariant: N/A

ClinVar: 2895

CAiD: CA10575473

gnomAD N/A

Supplementary Tables 1 and 2 combined information:

Case20a: GT20a, Male, 30 years old

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: Family information available in Table1 (brother of GT20b)

ParentalGenotype: Parents are consanguineous, no other genotype information available

CasePresentingHPOs: HP:0000225

(Gingival bleeding)

CaseHPOFreeText: N/A

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: Showed <5% 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.1882C>T (p.Arg628Ter)

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA399801310

gnomAD: MAF in Latino population: 0.00003983 https://gnomad.broadinstitute.org/variant/17-42456075-G-A

Supplementary Tables 1 and 2 combined information:

Case16: GT16, Male, 31 years old

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: Available per supplementary table 1; however very minimal information

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

CasePresentingHPOs: HP:0000978, HP:0000979, HP:0031364, HP:0000421, HP:0000225

(Bruising, purpura, ecchymosis, epistaxis, gingival bleeding)

CaseHPOFreeText: N/A

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: Showed <5% 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.2333A>C (p.Gln778Pro) and NM_000419.3:c.2267+1G>T no protein coding sequence available

LegacyVariant: N/A

ClinVar: 225393 (p.Gln778Pro)

CAiD: CA290947544 (p.Gln778Pro) and CA399798124 for (c.2267+1G>T )

gnomAD: N/A

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

Supplementary Tables 1 and 2 combined information:

Case9: GT9, Female, 25 years old

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: Not available per supplementary table 1

ParentalGenotype: Parents are consanguineous, no other genotype information available

CasePresentingHPOs: HP:0000421, HP:0000132

(Epistaxis, menorrhagia)

CaseHPOFreeText: N/A

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: Showed <5% 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.2333A>C (p.Gln778Pro)

LegacyVariant: N/A

ClinVar: 225393

CAiD: CA290947544

gnomAD: N/A

Supplementary Tables 1 and 2 combined information:

Case17b: GT17b, Male, 15 years old, brother of GT17a

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: Available per supplementary table 1

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

CasePresentingHPOs: HP:0000978, HP:0000979, HP:0031364, HP:0000421, HP:0002239

(Bruising, purpura, ecchymosis, epistaxis, gastrointestinal bleeding)

CaseHPOFreeText: Post traumatic hemorrhage

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: Showed <5% 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.2671C>T (p.Gln891Ter)

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA8602626 (p.Gln891Ter)

gnomAD: N/A

Supplementary Tables 1 and 2 combined information:

Case24: GT24, Female, 7 years old

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: Not available per supplementary table 1

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

CasePresentingHPOs: HP:0000978, HP:0000979, HP:0031364, HP:0000421, HP:0000225

(Bruising, purpura, ecchymosis, epistaxis, gingival bleeding)

CaseHPOFreeText: N/A

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: Showed 10-20% of αIIbβ3 expression measured by flow cytometry

PlateletAggregation: Platelet aggregation showed a small response to ADP, no response to 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.2333A>C (p.Gln778Pro) and NM_000419.3:c.1750C>T (p.Arg584Ter) This article is still being done-Meera)

LegacyVariant: N/A

ClinVar: 225393 (p.Gln778Pro) and 2892 (p.Arg584Ter)

CAiD: CA290947544 (p.Gln778Pro) and CA115834 (p.Arg584Ter)

gnomAD: MAF in East Asian population: 0.0002176 (p.Arg584Ter) https://gnomad.broadinstitute.org/variant/17-42457372-G-A and MAF in East Asian population for p.Gln778Pro 0.0001087 https://gnomad.broadinstitute.org/variant/17-42453691-T-G

Supplementary Tables 1 and 2 combined information:

Case18: Gt18, Male, 20 years old

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: Available per Table 1; however, very minimal information

ParentalGenotype: Parents are consanguineous, no other genotype information available

CasePresentingHPOs: HP:0000421

(Epistaxis)

CaseHPOFreeText: N/A

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: Showed <5% 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.2671C>T (p.Gln891Ter)

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA8602626 (p.Gln891Ter)

gnomAD: N/A

Supplementary Tables 1 and 2 combined information:

Case27: GT27, Male, 29 years old

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: Available per Table 1; however, very minimal information

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

CasePresentingHPOs: HP:0000978, HP:0000979, HP:0031364

(Bruising, purpura, ecchymosis)

CaseHPOFreeText: Post traumatic hemorrhage

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: Showed <5% 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.2333A>C (p.Gln778Pro) This article is not completed-Meera

LegacyVariant: N/A

ClinVar: 225393

CAiD: CA290947544

gnomAD: MAF in East Asian population: 0.0001087 https://gnomad.broadinstitute.org/variant/17-42453691-T-G

Supplemental Table S1:

Cases6-11: Males and Females from India/Pakistan, ages not specified

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: N/A

CaseHPOFreeText: Moderate to severe bleeding tendency in these patients

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: <5% αIIbβ3 expression

PlateletAggregation: Absent platelet aggregation (all the information that is provided in Supp. Table S1)

CasePreviousTesting: Sanger sequencing of exons, splice sites and untranslated regions of the ITGA2B and ITGB3 genes was performed

Gene: ITGA2B

Variant: NM_000419.3:c.1652G>A (p.Arg551Gln)

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA8602986

gnomAD: MAF in the South Asian population is 0.00006536 https://gnomad.broadinstitute.org/variant/17-42457470-C-T

PreviouslyPublished: PMID: 19172520 and 26896847

Supplemental Table S1:

Cases 13-18: Males and Females, from Sweden, France and Germany and other places, ages are not specified

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: N/A

CaseHPOFreeText: Moderate to severe bleeding when data was available

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: 5%/<5% when homozygous αIIbβ3 expression

PlateletAggregation: Absent platelet aggregation (all the information that is provided in Supp. Table S1)

CasePreviousTesting: Sanger sequencing of exons, splice sites and untranslated regions of the ITGA2B and ITGB3 genes was performed

Gene: ITGA2B

Variant: NM_000419.3:c.1787T>C (p.Ile596Thr)

LegacyVariant: N/A

ClinVar: 2900

CAiD: CA115846

gnomAD: MAF in the European non finnish pop is 0.0001325 https://gnomad.broadinstitute.org/variant/17-42457148-A-G

PreviouslyPublished: PMID: 9215749, 9734640, 20020534, 22513797, 25373348

Supplemental Table S1:

Cases19-23: Males and Females from France, North Africa, Italy and Germany, ages are not specified for these patients

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: N/A

CaseHPOFreeText: N/A

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: <5% αIIbβ3 expression

PlateletAggregation: Absent platelet aggregation (all the information that is provided in Supp. Table S1)

CasePreviousTesting: Sanger sequencing of exons, splice sites and untranslated regions of the ITGA2B and ITGB3 genes was performed

Gene: ITGA2B

Variant: NM_000419.3:c.1878G>T (p.Gln626His)

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA399801470

gnomAD: N/A

PreviouslyPublished: PMID: 21113249, 20020534, 22513797, 25728920

Supplemental Table S1:

Case24: N/A (from Turkey)

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: Individual clinical data not given

CaseHPOFreeText: N/A

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: <5% αIIbβ3 expression

PlateletAggregation: Absent platelet aggregation (all the information that is provided in Supp. Table S1)

CasePreviousTesting: Sanger sequencing of exons, splice sites and untranslated regions of the ITGA2B and ITGB3 genes was performed

Gene: ITGA2B

Variant: Thr646Ala* (Need to consult senior biocurator to figure this variant out) will note it as Unknown as I am not sure of it

LegacyVariant: ^

ClinVar: ^

CAiD: ^

gnomAD: ^

PreviouslyPublished: PMID: 25734216

Supplemental Table S1:

Cases35and36: Females, USA, age not specified

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: N/A

CaseHPOFreeText: Severe bleeding

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: <5% αIIbβ3 expression

PlateletAggregation: Absent platelet aggregation (all the information that is provided in Supp. Table S1)

CasePreviousTesting: Sanger sequencing of exons, splice sites and untranslated regions of the ITGA2B and ITGB3 genes was performed

Gene: ITGA2B

Variant: NM_000419.3:c.2264G>A (p.Arg755Gln)

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA8602771

gnomAD: MAF in the Latino population is 0.0001903 https://gnomad.broadinstitute.org/variant/17-42454380-C-T

PreviouslyPublished: PMID: 25728920

Supplemental Table S1:

Case1: Male, China, age not specified

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: HP:0004406, HP:0000225, HP:0000979

(Recurrent epistaxis, gingival bleeding, and purpura)

CaseHPOFreeText: N/A

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: 14% αIIbβ3 expression

PlateletAggregation: Absent platelet aggregation (all the information that is provided in Supp. Table S1)

CasePreviousTesting: Sanger sequencing of exons, splice sites and untranslated regions of the ITGA2B and ITGB3 genes was performed

Gene: ITGA2B

Variant: NM_000419.3:c.1429G>C (p.Ala477Pro)

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA399803370

gnomAD: N/A

PreviouslyPublished: PMID: 15946231

Supplemental Table S1:

Case34: Female, Germany, age not specified

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: N/A

CaseHPOFreeText: Moderate to severe bleeding that prompted transfusion

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: <5% αIIbβ3 expression

PlateletAggregation: Absent platelet aggregation (all the information that is provided in Supp. Table S1)

CasePreviousTesting: Sanger sequencing of exons, splice sites and untranslated regions of the ITGA2B and ITGB3 genes was performed

Gene: ITGA2B

Variant: (p.Cys705Leu) not getting this to show up in CAR need to consult senior biocurator noting this as Unknown Variant --> Variant can't be identified

LegacyVariant: N/A

ClinVar: N/A

CAiD: ^

gnomAD: ^

PreviouslyPublished: PMID: 20345392

Supplemental Table S1:

Case25: Female, Italy, age not specified

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: N/A

CaseHPOFreeText: Severe bleeding

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: <5% αIIbβ3 expression

PlateletAggregation: Absent platelet aggregation (all the information that is provided in Supp. Table S1)

CasePreviousTesting: Sanger sequencing of exons, splice sites and untranslated regions of the ITGA2B and ITGB3 genes was performed

Gene: ITGA2B

Variant: NM_000419.3:c.2051T>G (p.Leu684Arg)

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA399799849

gnomAD: N/A

PreviouslyPublished: PMID: 21113249

Supplemental Table S1:

Case37: Female, India, age not specified

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: N/A

CaseHPOFreeText: Mild bleeding

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: <5% αIIbβ3 expression

PlateletAggregation: Absent platelet aggregation (all the information that is provided in Supp. Table S1)

CasePreviousTesting: Sanger sequencing of exons, splice sites and untranslated regions of the ITGA2B and ITGB3 genes was performed

Gene: ITGA2B

Variant: NM_000419.3:c.2264G>C (p.Arg755Pro)

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA8602772

gnomAD: MAF in the European non Finnish population is 0.00001060 https://gnomad.broadinstitute.org/variant/17-42454380-C-G

PreviouslyPublished: PMID: 19172520

Case2: Patient ID B, Male, 16 years old, ethnicity not specified

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: Table 1 asserts family information is provided; however, minimal information

ParentalGenotype: N/A

CasePresentingHPOs: HP:0004406, HP:0000225

(Recurrent epsitaxis, gingival bleeding)

CaseHPOFreeText: N/A

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: N/A

PlateletAggregation: Defective response to ADP, adrenaline, collagen, arachidonic acid, and normal response to ristocetin

CasePreviousTesting: Exon PCR was used to amplify a;; coding regions of the ITGA2B and ITGB3 genes. PCR products were purified and Sanger sequenced. Segregation using parental samples was undertaken when available.

Gene: ITGA2B

Variant: NM_000419.3:c.641T>G (p.Leu214Arg)

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA399805518

gnomAD: MAF in South Asian population 0.00003266 http://gnomad.broadinstitute.org/variant/17-42462561-A-C

Case8: Patient ID H, Female, 8 years old, ethnicity not specified

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A (Table 1 does mention family history of bleeding)

ParentalGenotype: N/A (Parents are consangenous)

CasePresentingHPOs: HP:0000978, HP:0004406, HP:0000225, HP:0002239, HP:0005261

(Easy bruising, recurrent epistaxis, gingival bleeding, GI bleeding, hemarthrosis)

CaseHPOFreeText: Hemorrhage after dental, hemorrhage after trauma, ear bleeding

CaseNotHPOs: HP:0000967, HP:0000979, HP:0002239, HP:0000790, HP:0002248

(Petechiae, purpura, intracranial hemorrhage, hematuria, hematemesis)

CaseNotHPOsFreeText: Hematoma

ProteinExpression: N/A

PlateletAggregation: Defective response to ADP, adrenaline, collagen, arachidonic acid, and normal response to ristocetin

CasePreviousTesting: Exon PCR was used to amplify a;; coding regions of the ITGA2B and ITGB3 genes. PCR products were purified and Sanger sequenced. Segregation using parental samples was undertaken when available.

Gene: ITGA2B

Variant: NM_000419.3:c.1652G>A

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA8602986

gnomAD: MAF in South Asian population is 0.00006536 http://gnomad.broadinstitute.org/variant/17-42457470-C-T

PreviouslyPublished: PMID: 19172520

Case4: Patient ID D, Male, 10 years old, ethnicity not specified

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: Related to Patient C

ParentalGenotype: N/A

CasePresentingHPOs: HP:0004406 (Recurrent epistaxis)

CaseHPOFreeText: N/A

CaseNotHPOs: HP:0000967, HP:0000979, HP:0000978, HP:0000225, HP:0002239, HP:0002239, HP:0000790, HP:0005261, HP:0002248

(Petechiae, purpura, easy bruising, gingival bleeidng, GI bleeding, intracranial hemhorrage, hematuria, hemarthrosis, hematemesis)

CaseNotHPOsFreeText: Hemorrhage after dental, hemorrhage after trauma, ear bleeding, hematoma

ProteinExpression: N/A

PlateletAggregation: Defective response to ADP, adrenaline, collagen, arachidonic acid, and normal response to ristocetin

CasePreviousTesting: Exon PCR was used to amplify a;; coding regions of the ITGA2B and ITGB3 genes. PCR products were purified and Sanger sequenced. Segregation using parental samples was undertaken when available.

Gene: ITGA2B

Variant: NM_000419.3:c.1233C>A

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA399803781

gnomAD: N/A

PreviouslyPublished: PMID: 12424194

PMID: 40033798

Gene: ITGA2B

GNC: 6138

Case1: Male, 3.5 years old, Indian

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: (HP:0000421 Epistaxis)

CaseHPOFreeText: N/A

CaseNotHPOs: N/A

CaseNotHPOFreeText: N/A

ProteinExpression: Diagnosis of GT was made on the basis of quantitive determination of receptor count by flow cytometric analysis of GPIIb-IIIa

PlateletAggregation: Diagnosis of GT was made on the basis of impaired platelet aggregation (platelet aggregation was tested against ristocetin, ADP, collagen, epinephrine and arachidonic acid)

CasePreviousTesting: Multiplex PCR by using GPIIb primers and CSGE analysis were performed

Gene: ITGA2B

Variant: NM_000419.3:c.1286G>A (p.Asp396Asn)

LegacyVariant: (p.Asp365Asn)

ClinVar: N/A

CAiD: CA399803675

gnomAD: N/A

Case51: (GT-63) Female, age or ethnicity not specified

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: N/A

CaseHPOFreeText: Bleeding severity: Severe (See Supplementary Table 3)

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: Flow cytometry performed and CD41 and CD61 were observed (See Supplementary Table 3)

PlateletAggregation: Minimal information (See Supplementary Table 3)

CasePreviousTesting: DNA was extracted from peripheral blood samples from patients and family members, and Sanger sequencing and PCR was performed. Samples were processed for targeted sequencing using the available SHGp heme panel of 393 genes.

Gene: ITGA2B

Variant: NM_000419.3:c.558C>G (p.Tyr186Ter)

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA399805728

gnomAD: N/A

Case38: (GT-48) Male, age or ethnicity not specified

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: Proband GT45-GT48 are related

ParentalGenotype: N/A

CasePresentingHPOs: N/A

CaseHPOFreeText: Bleeding severity: Moderate (See Supplementary Table 3)

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: Flow cytometry performed and CD41 and CD61 were observed (See Supplementary Table 3)

PlateletAggregation: Minimal information (See Supplementary Table 3)

CasePreviousTesting: DNA was extracted from peripheral blood samples from patients and family members, and Sanger sequencing and PCR was performed. Samples were processed for targeted sequencing using the available SHGp heme panel of 393 genes.

Gene: ITGA2B

Variant: NM_000419.3:c.1879-2A>G

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA290949031

gnomAD: N/A

Case8: (GT-09) Male, age or ethnicity not specified

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: Probands 1-8 are related to GT-09 see Table 1

ParentalGenotype: Parents may be included in Table 1; however, not specified so no information

CasePresentingHPOs: N/A

CaseHPOFreeText: Bleeding severity: Information not available (See Supplementary Table 3)

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: Flow cytometry results not available (See Supplemental Table 3)

PlateletAggregation: No information (See Supplementary Table 3)

CasePreviousTesting: DNA was extracted from peripheral blood samples from patients and family members, and Sanger sequencing and PCR was performed. Samples were processed for targeted sequencing using the available SHGp heme panel of 393 genes.

Gene: ITGA2B

Variant: NM_000419.3:c.1210+5G>A

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA915940251

gnomAD: N/A

Case1: (GT-01) Male, age or ethnicity not specified

DiseaseAssertion: Glanzmann thrombasthenia type 1

FamilyInfo: Probands 2-9 are related to GT-01 see Table 1

ParentalGenotype: Parents may be included in Table 1; however, not specified so no information

CasePresentingHPOs: N/A

CaseHPOFreeText: Bleeding severity: Severe (See Supplemental Table 3)

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: Flow cytometry performed and CD41 and CD61 not observed (See Supplementary Table 3)

PlateletAggregation: Minimal information (See Supplementary Table 3)

CasePreviousTesting: DNA was extracted from peripheral blood samples from patients and family members, and Sanger sequencing and PCR was performed. Samples were processed for targeted sequencing using the available SHGp heme panel of 393 genes.

Gene: ITGA2B

Variant: NM_000419.3:c.1210+5G>A

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA915940251

gnomAD: N/A

Case32: (GT-37) Female, age or ethnicity not specified

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: Proband GT31-GT34 are related

ParentalGenotype: N/A

CasePresentingHPOs: N/A

CaseHPOFreeText: Bleeding severity: Severe (See Supplementary Table 3)

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: Flow cytometry performed and CD41 and CD61 were observed (See Supplementary Table 3)

PlateletAggregation: Minimal information (See Supplementary Table 3)

CasePreviousTesting: DNA was extracted from peripheral blood samples from patients and family members, and Sanger sequencing and PCR was performed. Samples were processed for targeted sequencing using the available SHGp heme panel of 393 genes.

Gene: ITGA2B

Variant: NM_000419.3:c.1879-2A>G

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA290949031

gnomAD: N/A

Case05: (GT-05) Male, age or ethnicity not specified

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: Probands 1-9 are related to GT-05 see Table 1

ParentalGenotype: Parents may be included in Table 1; however, not specified so no information

CasePresentingHPOs: Bleeding severity: Mild (See Supplementary Table 3)

CaseHPOFreeText: N/A

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: Flow cytometry performed and CD41 and CD61 not observed (See Supplementary Table 3)

PlateletAggregation: Minimal information (See Supplementary Table 3)

CasePreviousTesting: DNA was extracted from peripheral blood samples from patients and family members, and Sanger sequencing and PCR was performed. Samples were processed for targeted sequencing using the available SHGp heme panel of 393 genes.

Gene: ITGA2B

Variant: NM_000419.3:c.1210+5G>A

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA915940251

gnomAD: N/A

Case31: (GT-36) Male, age or ethnicity not specified

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: Proband GT31-GT34 are related

ParentalGenotype: N/A

CasePresentingHPOs: N/A

CaseHPOFreeText: Bleeding severity: Mild (See Supplementary Table 3)

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: Flow cytometry performed and CD41 and CD61 were observed (See Supplementary Table 3)

PlateletAggregation: Minimal information (See Supplementary Table 3)

CasePreviousTesting: DNA was extracted from peripheral blood samples from patients and family members, and Sanger sequencing and PCR was performed. Samples were processed for targeted sequencing using the available SHGp heme panel of 393 genes.

Gene: ITGA2B

Variant: NM_000419.3:c.1879-2A>G

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA290949031

gnomAD: N/A

Case37: (GT-47) Female, age or ethnicity not specified

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: Proband GT45-GT48 are related

ParentalGenotype: N/A

CasePresentingHPOs: N/A

CaseHPOFreeText: Bleeding severity: Moderate (See Supplementary Table 3)

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: Flow cytometry performed and CD41 and CD61 were observed (See Supplementary Table 3)

PlateletAggregation: Minimal information (See Supplementary Table 3)

CasePreviousTesting: DNA was extracted from peripheral blood samples from patients and family members, and Sanger sequencing and PCR was performed. Samples were processed for targeted sequencing using the available SHGp heme panel of 393 genes.

Gene: ITGA2B

Variant: NM_000419.3:c.1879-2A>G

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA290949031

gnomAD: N/A

Case7: (GT-08) Female, age or ethnicity not specified

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: Probands 1-9 are related to GT-08 see Table 1

ParentalGenotype: Parents may be included in Table 1; however, not specified so no information

CasePresentingHPOs: N/A

CaseHPOFreeText: Bleeding severity: Information not available (See Supplementary Table 3)

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: Flow cytometry results not available (See Supplemental Table 3)

PlateletAggregation: No information (See Supplementary Table 3)

CasePreviousTesting: DNA was extracted from peripheral blood samples from patients and family members, and Sanger sequencing and PCR was performed. Samples were processed for targeted sequencing using the available SHGp heme panel of 393 genes.

Gene: ITGA2B

Variant: NM_000419.3:c.1210+5G>A

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA915940251

gnomAD: N/A

Case3: (GT-03) Male, age or ethnicity not specified

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: Probands 1-9 are related to GT-03 see Table 1

ParentalGenotype: Parents may be included in Table 1; however, not specified so no information

CasePresentingHPOs: N/A

CaseHPOFreeText: Bleeding severity: N/A (See Supplemental Table 3)

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: Flow cytometry performed and CD41 and CD61 not observed (See Supplementary Table 3)

PlateletAggregation: Minimal information (See Supplementary Table 3)

CasePreviousTesting: DNA was extracted from peripheral blood samples from patients and family members, and Sanger sequencing and PCR was performed. Samples were processed for targeted sequencing using the available SHGp heme panel of 393 genes.

Gene: ITGA2B

Variant: NM_000419.3:c.1210+5G>A

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA915940251

gnomAD: N/A