Case1: Male, 59 years old, Japanese

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: HP:0002239, HP:0025085

(GI bleeding, bloody stools)

CaseHPOFreeText: N/A

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: Flow cytometry showed expression of αIIbβ3 on patient platelets was <5% compared to that of normal controls indicating the patient had Type 1 GT

PlateletAggregation: Transfused platelets showed normal response to ADP stimulation (See Fig. 3B) indicating that transfused platelets can support primary hemostatic plug formation

CasePreviousTesting: Analyzed whole coding region of αIIb and β3 cDNA, amplified from patient mRNA.

Gene: ITGB3

Variant: NM_000212.2:c.892C>T

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA400025098

gnomAD: N/A

Supplementary Tables 1 and 2 combined information:

Case34: GT34, Male, 3 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: 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.432G>A (p.Trp144Ter)

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA399805999

gnomAD: N/A

Supplementary Tables 1 and 2 combined information:

Case14: GT14, Female, 5 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 <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

LegacyVariant: N/A

ClinVar: 225393

CAiD: CA290947544

gnomAD: N/A

Supplementary Tables 1 and 2 combined information:

Case7: GT7, Female, 31 years old

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: Not available per supplementary table 1

ParentalGenotype: Parents are consanguineous, no other genotype information available

CasePresentingHPOs: HP:0000978, HP:0000979, HP:0031364, HP:0000421, HP:0000132

(Bruising, purpura, ecchymosis, 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.1652G>A (p.Arg551Gln)

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA8602986 (p.Arg551Gln)

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

Supplementary Tables 1 and 2 combined information:

Case5: GT5, Female, 25 years old; however, now deceased

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: Not available per supplementary table 1

ParentalGenotype: Parents are consanguineous, no other genotype information available

CasePresentingHPOs: HP:0000132, HP:0000421, HP:0002239, HP:0002170

(Menorrhagia, epistaxis, gastrointestinal bleeding, intracranial hemorrhage)

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.1750C>T (p.Arg584Ter) and NM_000419.3:c.2159T>C (p.Leu720Pro)

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA115834 (p.Arg584Ter) and CA399798955 (p.Leu720Pro)

gnomAD: N/A

Supplementary Tables 1 and 2 combined information:

Case2: GT2, Male, 13 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

(Bruising, purpura, ecchymosis, 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.1750C>T (p.Arg584Ter)

LegacyVariant: N/A

ClinVar: 2892

CAiD: CA115834

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

Supplementary Tables 1 and 2 combined information:

Case28: GT28, Female, 6 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, HP:0002239

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

CaseHPOFreeText: Post traumatic hemorrhage

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: ITGB3

Variant: NM_000212.2:c.1728del (p.S577Pfs*92) and NM_000212.2:c.892C>T (p.Gln298Ter)

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA915940253 (p.S577Pfs*92) and CA400025098 (p.Gln298Ter)

gnomAD: N/A

Supplementary Tables 1 and 2 combined information:

Case30: GT30, Female, 13

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, HP:0000132

(Bruising, purpura, ecchymosis, epistaxis, gingival bleeding, 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.2330C>A (p.Ala777Asp) and NM_000419.3:c.2602-3C>G (no protein notation given)

LegacyVariant: N/A

ClinVar: 2893 (c.2602-3C>G)

CAiD: CA399796685 (p.Ala777Asp) and CA10575472 (c.2602-3C>G)

gnomAD: MAF for East Asian population: 0.00006523 https://gnomad.broadinstitute.org/variant/17-42453087-G-C

Supplementary Tables 1 and 2 combined information:

Case17a: GT17a, Female, 14 years old, sister of GT17b proband

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

(Bruising, purpura, ecchymosis, epistaxis)

CaseHPOFreeText: Post traumatic hemorrhage

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: Showed <5% of αIIbβ3 expression measured by flow cytometry

PlateletAggregation: Platelet aggregation showed a small 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.799+2T>C and NM_000419.3:c.2671C>T (p.Gln891Ter)

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA399805155 (c.799 +2 T>C) and CA8602626 (p.Gln891Ter)

gnomAD: N/A

Supplementary Tables 1 and 2 combined information:

Case25: GT25, Female, 26 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, HP:0000225, HP:0000132, HP:0000789,

(Epistaxis, gingival bleeding, menorrhagia, infertility)

CaseHPOFreeText: Rupture of corpus luteum

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: ITGB3

Variant: NM_000212.2:c.1495T>C (p.Cys499Arg)

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA400029525

gnomAD: N/A

Supplementary Tables 1 and 2 combined information:

Case37: GT37, Female, 1 year 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

(Bruising, purpura, ecchymosis)

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.1993C>T (p.Gln665Ter)

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA399801004

gnomAD: MAF in East Asian population: 0.00005461 https://gnomad.broadinstitute.org/variant/17-42455831-G-A

Supplementary Tables 1 and 2 combined information:

Case19: GT19, Female, 32 years old

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: Not available per Table 1.

ParentalGenotype: Parents are consanguineous, no other genotype information available

CasePresentingHPOs: HP:0000421, HP:0000225, HP:0000790, HP:0000132

(Epistaxis, gingival bleeding, hematuria, menorrhagia)

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.1234G>A (p.Gly412Arg)

LegacyVariant: N/A

ClinVar: 381748

CAiD: CA8603182 (p.Gly412Arg)

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

Supplementary Tables 1 and 2 combined information:

Case20b: GT20b, Female, 23 years old

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: Family information available in Table1 (sister of proband GT20a)

ParentalGenotype: Parents are consanguineous, no other genotype information available

CasePresentingHPOs: HP:0000978, HP:0000979, HP:0031364, HP:0002239, HP:0000132

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

CaseHPOFreeText: Post traumatic bleeding

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:

Case35: GT35, Male, 1 year 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

(Bruising, purpura, ecchymosis)

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.625-1G>A (c.625-1G>A) and NM_000419.3:c.659A>G (p.Tyr220Cys)

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA399805552 (c.625-1G>A) and CA399805484 (p.Tyr220Cys)

gnomAD: MAF for (p.Tyr220Cys) in the South Asian population 0.00003266 https://gnomad.broadinstitute.org/variant/17-42462543-T-C

Supplementary Tables 1 and 2 combined information:

Case26: GT26, Male, 13 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

(Bruising, purpura, ecchymosis)

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 (Gln778Pro) and NM_000419.3:c.2671C>T (p.Gln891Ter)

LegacyVariant: N/A

ClinVar: 225393 (p.Gln778Pro)

CAiD: CA290947544 (p.Gln778Pro) and CA8602626 (p.Gln891Ter)

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

Supplementary Tables 1 and 2 combined information:

Case12: GT12, Male, 10 years old

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: Family history available per Table 1; however, no further information given

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

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

(Bruising, purpura, ecchymosis, 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.2333A>C (p.Gln778Pro)

LegacyVariant: N/A

ClinVar: 225393

CAiD: CA290947544

gnomAD: N/A

Supplementary Tables 1 and 2 combined information:

Case29: GT29, Female, 16 years old

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: Not available per supplementary table 1

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

CasePresentingHPOs: HP:0000132, HP:0000978, HP:0000979, HP:0031364, HP:0000225

(Menorrhagia, bruising, purpura, ecchymosis, 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 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.1750C>T (p.Arg584Ter)

LegacyVariant: N/A

ClinVar: 2892

CAiD: CA115834

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

Supplementary Tables 1 and 2 combined information:

Case22: GT22, Female, 16 years old

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: Not available per supplementary table 1

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

CasePresentingHPOs: HP:0000132 (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.1750C>T (p.Arg584Ter)

LegacyVariant: N/A

ClinVar: 2892

CAiD: CA115834

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

Supplementary Tables 1 and 2 combined information:

Case4: GT4, Female, 22 years old

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: Not available per supplementary table 1

ParentalGenotype: Parents are consanguineous, no other genotype information available

CasePresentingHPOs: HP:0000978, HP:0000979, HP:0031364, HP:0000421, HP:0000225, HP:0000132

(Bruising, purpura, ecchymosis, epistaxis, gingival bleeding, 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.2671C>T (p.Gln891Ter)

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA8602626

gnomAD: N/A

Supplementary Tables 1 and 2 combined information:

Case41: GT41, Male, 5 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

(Bruising, purpura, ecchymosis, 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: ITGB3

Variant: NM_000212.2:c.1736G>A (p.Trp579Ter) and NM_000212.2:c.1784_1802delinsGTCACA

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA400032429 (p.Trp579Ter) and CA915940255 (c.1784_1802delinsGTCACA)

gnomAD: N/A

Supplementary Tables 1 and 2 combined information:

Case8: GT8, 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:0000978, HP:0000979, HP:0031364, HP:0000421

(Bruising, purpura, ecchymosis, 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.1651C>T (p.Arg551Trp) and NM_000419.3:c.2236G>T (p.Glu746Ter)

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA399802348 (p.Arg551Trp) and CA399798321 (p.Glu746Ter)

gnomAD: N/A

Supplementary Tables 1 and 2 combined information:

Case38: GT38, Female, 23 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:0000132

(Bruising, purpura, ecchymosis, 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 and ITGB3

Variant: NM_000419.3:c.2613del in ITGA2B (p.Leu872Cysfs*38) and NM_000212.2:c.1646G>C in ITGB3 (p.Cys549Ser)

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA915940594 (p.Leu872Cysfs*38) and CA400030198 (p.Cys549Ser)

gnomAD: MAF of (p.Cys549Ser) in the East Asian population: 0.00005453 https://gnomad.broadinstitute.org/variant/17-45369890-G-C

Supplementary Tables 1 and 2 combined information:

Case33: GT33, Female, 12 years old

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: Not available per supplementary table 1

ParentalGenotype: Parents are consanguineous, no other genotype information available

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

(Bruising, purpura, ecchymosis, epistaxis)

CaseHPOFreeText: N/A

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: Showed <5% 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: ITGB3

Variant: NM_000212.2:c.719G>A (p.Arg240Gln)

LegacyVariant: N/A

ClinVar: 13553

CAiD: CA123224

gnomAD: N/A

Case1: GT-1, gender, age, ethnicity not specified

DiseaseAssertion: Glanzmann thrombasthenia type II

FamilyInfo: N/A

ParentalGenotype: Segregation analysis confirmed the presence of heterozygous mutations in carrier parents

CasePresentingHPOs: N/A

CaseHPOFreeText: Article mentions patients presented with variable bleeding diathesis and Table 1 shows the several phenotypes that were seen among the cohort of 13 patients in this study (this article does not state a specific bleeding phenotype for each proband) "Most of the patients had gross blood loss due to epistaxis (54%), cutaneous bleeding (58%) and menorrhagia (100% of women), while other common symptoms (oral cavity, gastrointestinal, following dental extraction or mild injuries, postpartum, or hematomas) were in general milder."

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: Flow cytometry revealed αIIbβ3 expression between 5% and 20%

PlateletAggregation: Article mentions the disorder was indentified by platelet testing consisting in severely impaired aggregation in response to all physiological agonists and also TMA (See Table 4). Ristocetin-induced platelet aggregation was normal or reduced to some extent.

CasePreviousTesting: To detect mutations in ITGA2B or ITGB3, total RNA from peripheral blood was used for cDNA synthesis for RT-PCR. Using specific oligonucleotides and conditions, they amplified and sequenced ITGA2B and ITGB3 by Sanger sequencing, and every mutation found in cDNA was confirmed on DNA samples

Gene: ITGB3

Variant: NM_000212.2:c.448A>G (p.Met150Val) and NM_000212.2:c.774_775del (p.Cys258Ter)

LegacyVariant: (p.Met124Val)

ClinVar: N/A

CAiD: CA8622961 and CA915940285

gnomAD: MAF in South Asian population is 0.00003266 http://gnomad.broadinstitute.org/variant/17-45361895-A-G

PreviouslyPublished PMID: 15583747 (p.Met124Val)

Table 3 Molecular Diagnosis of Patients with Glanzmann Thrombasthenia:

Case4: GT-4, age, gender, ethnicity not specified

DiseaseAssertion: Glanzmann thrombasthenia type I

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: N/A

CaseHPOFreeText: Patients presented with a variable bleeding diathesis; most patients had epistaxis (54%), cutaneous bleeding (58%), and menorrhagia (100% of women) while other common symptoms (oral cavity, GI, following dental extraction of mild injuries, postpartum, or hematomas) were in general milder. There is no specific phenotypes attached to probands in this paper.

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: Flow cytometry showed that αIIbβ3 expression was less than 5%

PlateletAggregation: There was severely impaired aggregation in response to all physiological agonists, and ristocetin induced platelet agglutination was normal or reduced to some extent.

CasePreviousTesting: Total RNA from peripheral blood was used for cDNA synthesis for RT-PCR. Then, using specific oligonucleotides and conditions, they amplified and sequenced ITGA2B and ITGB3 by Sanger sequencing. Every mutation found in cDNA was confirmed in DNA samples.

Gene: ITGB3

Variant: NM_000212.2:c.569A>G (p.Tyr190Cys)

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA400023236

gnomAD: N/A

Table 3 Molecular Diagnosis of Patients with Glanzmann Thrombasthenia:

Case1: GT-1, age, gender, ethnicity not specified

DiseaseAssertion: Glanzmann thrombasthenia type II

FamilyInfo: Segregation analysis confirmed in presence of heterozygous mutations in this proband.

ParentalGenotype: Although segregation analysis confirmed, we do not know which variant in particular came from mom or dad.

CasePresentingHPOs: N/A

CaseHPOFreeText: Patients presented with a variable bleeding diathesis; most patients had epistaxis (54%), cutaneous bleeding (58%), and menorrhagia (100% of women) while other common symptoms (oral cavity, GI, following dental extraction of mild injuries, postpartum, or hematomas) were in general milder. There is no specific phenotypes attached to probands in this paper.

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: Flow cytometry showed that αIIbβ3 expression was between 5% and 20%

PlateletAggregation: There was severely impaired aggregation in response to all physiological agonists, and ristocetin induced platelet agglutination was normal or reduced to some extent.

CasePreviousTesting: Total RNA from peripheral blood was used for cDNA synthesis for RT-PCR. Then, using specific oligonucleotides and conditions, they amplified and sequenced ITGA2B and ITGB3 by Sanger sequencing. Every mutation found in cDNA was confirmed in DNA samples.

Gene: ITGB3

Variant: NM_000212.2:c.448A>G (p.Met124Val) and NM_000212.2:c.774_775del (p.Cys258Ter)

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA8622961 and CA915940285

gnomAD: MAF in South Asian population is 0.00003266 http://gnomad.broadinstitute.org/variant/17-45361895-A-G

Table 3 Molecular Diagnosis of Patients with Glanzmann Thrombasthenia:

Case2: GT-2, age, gender, ethnicity not specified

DiseaseAssertion: Glanzmann thrombasthenia type I

FamilyInfo: Segregation analysis confirmed in presence of heterozygous mutations in this proband.

ParentalGenotype: Although segregation analysis confirmed, we do not know which variant in particular came from mom or dad.

CasePresentingHPOs: N/A

CaseHPOFreeText: Patients presented with a variable bleeding diathesis; most patients had epistaxis (54%), cutaneous bleeding (58%), and menorrhagia (100% of women) while other common symptoms (oral cavity, GI, following dental extraction of mild injuries, postpartum, or hematomas) were in general milder. There is no specific phenotypes attached to probands in this paper.

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: Flow cytometry showed that αIIbβ3 expression was less than 5%

PlateletAggregation: There was severely impaired aggregation in response to all physiological agonists, and ristocetin induced platelet agglutination was normal or reduced to some extent.

CasePreviousTesting: Total RNA from peripheral blood was used for cDNA synthesis for RT-PCR. Then, using specific oligonucleotides and conditions, they amplified and sequenced ITGA2B and ITGB3 by Sanger sequencing. Every mutation found in cDNA was confirmed in DNA samples.

Gene: ITGA2B

Variant: NM_000419.3:c.2473_2481delinsTCACCTGGTC and NM_000419.3:c.641T>C (p.Leu214Pro)

LegacyVariant: p.Leu183Pro

ClinVar: (p.Leu214Pro is 2901)

CAiD: CA915940289 and CA115848

gnomAD: N/A

Case2: P2, gender, age, ethnicity not specified

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: N/A

CaseHPOFreeText: Article mentions all patients have a severe bleeding phenotype

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: αIIbβ3 expression levels were (4% in patient 2)

PlateletAggregation: N/A

CasePreviousTesting: Acknowledgements section mentions acknowledging the Genoscope team for sequencing both ITGA2B and ITGB3 genes of the GT patients in this article

Gene: ITGA2B

Variant: NM_000419.3:c.91del (p.Ala31ProsfsX2)

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA913203486

gnomAD: N/A

Case28: (GT-33) Female, age or ethnicity not specified

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: Proband GT31-GT34 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: ITGB3

Variant: NM_000212.2:c.2113del (p.Leu705Cysfs*4)

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA8623443

gnomAD: MAF in the East Asian population is 0.0001087 http://gnomad.broadinstitute.org/variant/17-45380183-TC-T

Case55: (GT-74) Gender, age, or ethnicity not specified

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: N/A

CaseHPOFreeText: Bleeding severity: Information not given (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: ITGB3

Variant: NM_000212.2:c.985A>G (p.Asn329Asp)

LegacyVariant: N/A

ClinVar: 323865

CAiD: CA8623107

gnomAD: MAF in Other population 0.0005534 http://gnomad.broadinstitute.org/variant/17-45367092-A-G

Case44: (GT-54) Male, age or ethnicity not specified

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

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: ITGB3

Variant: NM_000212.2:c.2113del (p.Leu705Cysfs*4)

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA8623443

gnomAD: MAF in East Asian population: 0.0001087 http://gnomad.broadinstitute.org/variant/17-45380183-TC-T

Case25: (GT-30) Female, age or ethnicity not specified

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: Proband GT30 is related to GT29

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.1651C>T (p.Arg551Trp)

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA399802348

gnomAD: MAF in the East Asian population is 0.00005045 http://gnomad.broadinstitute.org/variant/17-42457471-G-A

Case34: (GT-44) Female, age or ethnicity not specified

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: Proband GT43-GT44 are related

ParentalGenotype: N/A

CasePresentingHPOs: N/A

CaseHPOFreeText: Bleeding severity: Information not available (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.1620G>C (p.Gln540His) and NM_000419.3:c.1616T>G (p.Leu539Arg)

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA399802407 and CA399802416

gnomAD: N/A

Case54: (GT-73) Gender, age, or ethnicity not specified

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: N/A

CaseHPOFreeText: Bleeding severity: Information not given (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: ITGB3

Variant: NM_000212.2:c.985A>G (p.Asn329Asp)

LegacyVariant: N/A

ClinVar: 323865

CAiD: CA8623107

gnomAD: MAF in Other population 0.0005534 http://gnomad.broadinstitute.org/variant/17-45367092-A-G

Case21: (GT-25) Female, age or ethnicity not specified

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: Proband GT-26 is related to GT-25 see Table 1

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

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

Case27: (GT-32) Female, age or ethnicity not specified

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: Proband GT31-GT34 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: ITGB3

Variant: NM_000212.2:c.2113del (p.Leu705Cysfs*4)

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA8623443

gnomAD: MAF in the East Asian population is 0.0001087 http://gnomad.broadinstitute.org/variant/17-45380183-TC-T

Case19: (GT-21) Male, age or ethnicity not specified

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: Proband GT-22 is related to GT-21 see Table 1

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

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: ITGB3

Variant: NM_000212.2:c.2302-1G>A

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA400034626

gnomAD: N/A

Case12: (GT-14) Female, carrier, age or ethnicity not specified

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: Probands GT11 -GT13 are related to GT-14 see Table 1

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

CasePresentingHPOs: N/A

CaseHPOFreeText: Bleeding severity: Not available (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: ITGB3

Variant: NM_000212.2:c.727G>C (p.Asp243His)

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA400023600

gnomAD: N/A

Case23: (GT-27) Male, age or ethnicity not specified

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: Proband GT28 is related to this proband GT 27; however, no DNA was available for testing for GT28.

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: ITGB3

Variant: NM_000212.2:c.1835G>A

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA400032647

gnomAD: N/A

Case47: (GT-58) 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: ITGB3

Variant: NM_000212.2:c.1543del (p.Ser513fs)

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA500651429

gnomAD: N/A

Case30: (GT-35) 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

Case43: (GT-53) Female, age or ethnicity not specified

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: N/A

CaseHPOFreeText: Bleeding severity: Information not available (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: ITGB3

Variant: NM_000212.2:c.2113del (p.Leu705Cysfs*4)

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA8623443

gnomAD: MAF in East Asian population: 0.0001087 http://gnomad.broadinstitute.org/variant/17-45380183-TC-T

Case35: (GT-45) Male, age or ethnicity not specified

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: Proband GT45-GT48 are related

ParentalGenotype: N/A

CasePresentingHPOs: N/A

CaseHPOFreeText: Bleeding severity: Information not available (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

Case24: (GT-29) Male, age or ethnicity not specified

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: Proband GT30 is related to GT29

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.1651C>T (p.Arg551Trp)

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA399802348

gnomAD: MAF in the East Asian population is 0.00005045 http://gnomad.broadinstitute.org/variant/17-42457471-G-A

Case4: (GT-04) Male, age or ethnicity not specified

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: Probands 1-9 are related to GT-04 see Table 1

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

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 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

Case6: (GT-07) Male, age or ethnicity not specified

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: Probands 1-9 are related to GT-07 see Table 1

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

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 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

Case2: (GT-02) Male, age or ethnicity not specified

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: Probands 1-9 are related to GT-02 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 for proband 2 (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

Case33: (GT-43) Male, age or ethnicity not specified

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: Proband GT43-GT44 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.1620G>C (p.Gln540His) and NM_000419.3:c.1616T>G (p.Leu539Arg)

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA399802407 and CA399802416

gnomAD: N/A

Case10: (GT-12) Male, age or ethnicity not specified

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: Probands GT11 -GT14 are related to GT-12 see Table 1

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

CasePresentingHPOs: N/A

CaseHPOFreeText: Bleeding severity: not available (See Supplemental 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: ITGB3

Variant: NM_000212.2:c.727G>C (p.Asp243His)

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA400023600

gnomAD: N/A

Case50: (GT-62) 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 and ITGB3

Variant: NM_000419.3:c.985G>T (p.Val329Phe) and NM_000212.2:c.1265G>A (p.Ser422Asn)

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA399804719 (p.Val329Phe) and CA291225740 (p.Ser422Asn)

gnomAD: N/A

Case18: (GT-20) Female, age or ethnicity not specified

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: Probands GT15-GT19 are related to GT-20 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 on bleeding phenotype/severity (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: ITGB3

Variant: NM_000212.2:c.727G>C (p.Asp243His)

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA400023600

gnomAD: N/A

Case17: (GT-19) Male, carrier status, age or ethnicity not specified

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: Probands GT15-GT20 are related to GT-19 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 on bleeding phenotype/severity (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: ITGB3

Variant: NM_000212.2:c.727G>C (p.Asp243His)

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA400023600

gnomAD: N/A

Supplementary Table S1 & S2 Proband and Variant Information:

Case26: GT30, Female, age not specified, Caucasian

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: Affected brother (See Supplementary Table 1)

ParentalGenotype: N/A

CasePresentingHPOs:

(Epistaxis, GI bleeding)

CaseHPOFreeText: Diffuse bruising mainly with 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: ITGB3

Variant: NM_000212.2:c.777+1G>A

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA8623036

gnomAD: MAF in the Latino population is 0.0006774 http://gnomad.broadinstitute.org/variant/17-45363789-G-A

Supplementary Table S1 & S2 Proband and Variant Information:

Case55: GT55, Female, 28, Argentinian/Brazilian

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: Has an affected sister (this is all the information we are provided with)

ParentalGenotype: N/A

CasePresentingHPOs: HP:0000225, HP:0000421

(Gingival bleeding, epistaxis)

CaseHPOFreeText: N/A

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: Flow cytometry showed 11-22% 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.647C>T (p.Ala216Val)

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA399805506

gnomAD: N/A

Supplementary Table S1 & S2 Proband and Variant Information:

Case35: GT36c, Female, 47 years old, Spanish

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: Affected sister who is proband 36 a and affected brother proband 36b

ParentalGenotype: N/A

CasePresentingHPOs: HP:0000132, HP:0011891

(Menorrhagia, post-partum hemorrhage)

CaseHPOFreeText: Intra-abdominal hemorrhage and bleeding after trauma

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:

Case7: GT8, Male, 82 at death, French

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: HP:0000978, HP:0000421, HP:0002239

(Easy bruising, epistaxis, GI bleeding

CaseHPOFreeText: N/A

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: Flow cytometry showed 10-15% 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.2348+5G>C (p.Ser756Gly783delInsArg)

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA290947484

gnomAD: N/A

Supplementary Table S1 & S2 Proband and Variant Information:

Case47: GT47, Male, 11 years old, French

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: N/A

CaseHPOFreeText: Severe mucocutaneous 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.832del (p.Asp278Ilefs*101)

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA915940374

gnomAD: N/A

Supplementary Table S1 & S2 Proband and Variant Information:

Case12: GT13, Female, 14, French

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: HP:0000967 (Petechiae)

CaseHPOFreeText: Moderate bleeding syndrome

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: Flow cytometry showed <5% 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.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 http://gnomad.broadinstitute.org/variant/17-42457372-G-A

Supplementary Table S1 & S2 Proband and Variant Information:

Case68: GT72, Female, 56 years old, French

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: HP:0000421, HP:0031364, HP:0000225, HP:0000132, HP:0002239, HP:0006298

(Epistaxis, ecchymosis, gingival bleeding, menorrhagia, GI bleeding, prolonged bleeding after dental extraction)

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.2951C>A (P.Thr984Lys)

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA399790180

gnomAD: N/A

Supplementary Table S1 & S2 Proband and Variant Information:

Case52: GT52, Male, 24 years old, Argentenian/Brazil

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: HP:0000421

(Epistaxis)

CaseHPOFreeText: Hematomas

(Proband's symptoms decreased during adolescence)

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:

Case40: GT41a, Female, 15 years old, Chinese

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: Affected brother is proband 41b in this study (See Supplemental Table S1)

ParentalGenotype: N/A

CasePresentingHPOs: HP:0004406, HP:0000978

(Recurrent 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

Supplementary Table S1 & S2 Proband and Variant Information:

Case37: GT39a, Female, 23 years old, Swedish/American

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: Affected brother who is proband 39b in this study (See Supplemental Table S1)

ParentalGenotype: N/A

CasePresentingHPOs: HP:0000978, HP:0000421, HP:0006298, HP:0000132

(Bruising susceptibility, epistaxis, prolonged bleeding after dental extraction, menorrhagia)

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.1882C>T (p.Arg628Ter)

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA399801310

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

Supplementary Table S1 & S2 Proband and Variant Information:

Case38: GT39b, Male, 18 years old, Swedish/American

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: Affected sister who is proband 39a in this study (See Supplemental Table S1)

ParentalGenotype: N/A

CasePresentingHPOs: HP:0000978, HP:0000421, HP:0006

(Bruising susceptibility, epistaxis)

CaseHPOFreeText: Hematomas after minor trauma

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.1882C>T (p.Arg628Ter)

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA399801310

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

Supplementary Table S1 & S2 Proband and Variant Information:

Case14: GT15, Female, 35, French

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: HP:0031364, HP:0000967, HP:0000421, HP:0000225

(Ecchymosis, petechiae, epistaxis, gingival bleeding)

CaseHPOFreeText: Bleeding from birth and hematomas from excersize

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: Flow cytometry showed <5% 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.2095-19T>A and NM_000419.3:c.2770C>T (p.Gln924Ter)

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA915940312 and CA399792054

gnomAD: N/A

Supplementary Table S1 & S2 Proband and Variant Information:

Case28: GT33a, Male, age not specified, USA/Laos

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: Affected sister who is proband 33b in this article

ParentalGenotype: N/A

CasePresentingHPOs: HP:0000421, HP:0002239

(Epistaxis, GI bleeding)

CaseHPOFreeText: Life-threatening bleeding at onset of menses

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.262C>T (p.Arg88Ter) and NM_000212.2:c.2113del (p.Leu705Cysfs*4)

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA400020703 and CA8623443

gnomAD: MAF in the Other population is 0.0001385 http://gnomad.broadinstitute.org/variant/17-45360816-C-T and MAF in the East Asian population is 0.0001087 http://gnomad.broadinstitute.org/variant/17-45380183-TC-T

Supplementary Table S1 & S2 Proband and Variant Information:

Case21: GT24, Female, 45, French (Gypsy)

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: HP:0000421, HP:0000132

(Epistaxis, menorrhagia)

CaseHPOFreeText: Post-traumatic hematoma

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:

Case60: GT62, Female, 58 years old, French

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: Affected sister (that is all the information we are given)

ParentalGenotype: N/A

CasePresentingHPOs: HP:0000978, HP:0000225, HP:0000132, HP:0006298

(Easy bruising, gingival bleeding, menorrhagia, bleeding after dental extraction)

CaseHPOFreeText: Esophageal 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: ITGB3

Variant: NM_000212.2:c.31T>C (p.Trp11Arg)

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA291240306

gnomAD: N/A

Supplementary Table S1 & S2 Proband and Variant Information:

Case15: GT18, Male, 20, French

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: HP:0031364, HP:0000978

(Ecchymosis, easy bruising)

CaseHPOFreeText: N/A

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: Flow cytometry showed 10% 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.1201G>T (pGly401Cys) andNM_000419.3:c.2800G>T (p.Val934Phe)

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA399804280 and CA290946484

gnomAD: N/A

Supplementary Table S1 & S2 Proband and Variant Information:

Case31: GT35a, Female, 18 years old, USA

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: Affected sister who is 35 b 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:

Case53: GT53, Male, 16 years old, Argentenian/Brazilian

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: HP:0000421

(Epistaxis)

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: ITGB3

Variant: NM_000212.2:c.356G>A (p.Gly201Ser) and NM_000212.2:c.1697G>A (p.Arg119Gln)

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA8622925 and CA400032338

gnomAD: MAF in the African population is http://gnomad.broadinstitute.org/variant/17-45360910-G-A

Supplementary Table S1 & S2 Proband and Variant Information:

Case46: GT45, Male, 86 years old, French

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: N/A

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

(Epistaxis, gingival bleeding, 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.551_626del (p.Arg184_Gln208del) and LR deletion

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA915940373

gnomAD: N/A

Supplementary Table S1 & S2 Proband and Variant Information:

Case45: GT44, Female, 10 years old, French

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: N/A

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.1357C>T (p.Arg453Ter)

LegacyVariant: N/A

ClinVar: 631773

CAiD: CA399803529

gnomAD: N/A

Supplementary Table S1 & S2 Proband and Variant Information:

Case48: GT48, Male, 10 years old, French

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: HP:0031364, HP:0000421, HP:0001934

(Ecchymosis, epistaxis, persistent bleeding after trauma)

CaseHPOFreeText: Frequent hematomas

CaseNotHPOs: N/A

CaseNotHPOsFreeText: No serious episode of spontaneous bleeding

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

PlateletAggregation: N/A (Not available for this proband see Supp Table S1)

CasePreviousTesting: Sanger sequencing of ITGA2B and ITGB3

Gene: ITGB3

Variant: NM_000212.2:c.1094A>G (p.Asn365Ter) and NM_000212.2:c.1522del (p.Gln508Serfs*161)

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA400026292 and CA772541579

gnomAD: N/A

Supplementary Table S1 & S2 Proband and Variant Information:

Case23: GT26, Male, 45, French

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

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: Much reduced platelet aggregation (See Supplementary Table 1)

CasePreviousTesting: Sanger sequencing of ITGA2B and ITGB3

Gene: ITGA2B

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

LegacyVariant: N/A

ClinVar: 2896

CAiD: CA115839

gnomAD: N/A

Supplementary Table S1 & S2 Proband and Variant Information:

Case19: GT22, Male, 13, French

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: HP:0000978, HP:0000225

(Easy bruising, 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.408+11C>A and NM_000419.3:c.1259T>C (p.Val420Ala)

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA915940333 and CA399803733

gnomAD: N/A

Supplementary Table S1 & S2 Proband and Variant Information:

Case17: GT20, Male, 28, French

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: HP:0000421, HP:0005261

(Epistaxis, hemarthrosis)

CaseHPOFreeText: Occasional hematomas

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: Flow cytometry showed 10-20% 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.2800G>T (p.Val934Phe)

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA290946484

gnomAD: N/A

Supplementary Table S1 & S2 Proband and Variant Information:

Case64: GT67, Male, 61 years old, French

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: Affected brother who is now dead (this is all the information we are provided with)

ParentalGenotype: N/A

CasePresentingHPOs:

(Gingival bleeding, epistaxis, bleeding after dental extraction )

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.1618C>T (p.Gln540Ter)

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA913184940 and CA399802411

gnomAD: MAF in the African population is 0.000 https://gnomad.broadinstitute.org/variant/17-42457504-G-A

Supplementary Table S1 & S2 Proband and Variant Information:

Case27: GT31, Female, 13, USA

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: HP:0000225, HP:0000421

(Gingival bleeding and epistaxis)

CaseHPOFreeText: Life-threatening bleeding at onset of menses

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.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 & S2 Proband and Variant Information:

Case69: GT73, Female, 34 years old, French

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: N/A

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

(Ecchymosis, epistaxis, gingival bleeding, menorrhagia)

CaseHPOFreeText: N/A

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: Flow cytometry showed nromal to reduced 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.889G>A (p.Gly297Arg)

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA8623074

gnomAD: MAF in the European (non-Finnish) population is 0.00002643 https://gnomad.broadinstitute.org/variant/17-45364547-G-A

Supplementary Table S1 & S2 Proband and Variant Information:

Case1: GT1, Male, 9, French/African

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: HP:0000978, HP:0011890, HP:0000421, HP:0000225

(Bruising susceptibility, prolonged bleeding following procedure, epistaxis, gingival bleeding)

CaseHPOFreeText: Tonsilar hemorrhage

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.1913+1G>A

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA400032825

gnomAD: N/A

Supplementary Table S1 & S2 Proband and Variant Information:

Case44: GT43b, Male, 11 years old, Morrocan

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: Affected sister is 43a (See Supplementary Table S1)

ParentalGenotype: N/A

CasePresentingHPOs: HP:0000421, HP:0000979, HP:0031364, HP:0000967, HP:0030137

(Epistaxis, purpura, ecchymosis, petechiae, prolonged bleeding at circumcision)

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.614+1G>T and NM_000212.2:c.683G>A (p.Arg228His)

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA400023344 and CA8623025

gnomAD: MAF in the African population is 0.00008012 http://gnomad.broadinstitute.org/variant/17-45363694-G-A

Supplementary Table S1 & S2 Proband and Variant Information:

Case56: GT57, Female, 10, Argentinian/European

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: HP:0000421, HP:0000967

(Epistaxis, petechia)

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.571T>G (p.Phe191Val) and NM_000419.3:c.961G>T (p.Phe191Alafs*32)

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA399805699 and CA399804768

gnomAD: N/A

Supplementary Table S1 & S2 Proband and Variant Information:

Case44: GT43b, Male, 11 years old, Morrocan

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: Affected sister is 43a (See Supplementary Table S1)

ParentalGenotype: N/A

CasePresentingHPOs: HP:0000421, HP:0000979, HP:0031364, HP:0000967

(Epistaxis, purpura, ecchymosis, petechiae)

CaseHPOFreeText: Lots of bleeding at circumcision

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.614+1G>T and NM_000212.2:c.683G>A (p.Arg228His)

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA400023344 and CA8623025

gnomAD: MAF in the African population is 0.00008012 http://gnomad.broadinstitute.org/variant/17-45363694-G-A

Supplementary Table S1 & S2 Proband and Variant Information:

Case62: GT65, Female, 31 years old, French

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: HP:0000421, HP:0000225, HP:0000132, HP:0000790, HP:0002239, HP:0006298

(Epistaxis, gingival bleeding, menorrhagia, hematuria, GI bleeding, bleeding after dental procedure)

CaseHPOFreeText: Tonsil bleeding, muscle 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.574+1G>A and NM_000419.3:c.1946+3G>T

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA399805691 and CA626121071

gnomAD: MAF in the European (non-Finnish) population is 0.00001235 https://gnomad.broadinstitute.org/variant/17-42462918-C-T and MAF in the African population is 0.000 https://gnomad.broadinstitute.org/variant/17-42456008-C-A

Case3: Patient MR, gender and age are not specified, all of these patients are Caucasian (either Italian or European)

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: N/A

CaseHPOFreeText: All patients presented with a current or past history of bleeding and a bleeding time >15 min. Bleeding symptoms were evaluated by examining available hospital records. Mild bleeders were defined as those who bled only after trauma or surgery or had minor symptoms, such as epistaxis. Moderate/severe bleeders were defined as those with a history of spontaneous or life threatening hemorrhages, such as gastrointestinal bleeding, or who had repeated episodes requiring platelet transfusions

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: See Table 1

PlateletAggregation: See Table 1

CasePreviousTesting: To identify point mutations responsible for GT, we have sequenced all coding regions of Ib and 3 genes and intron/exon boundaries.

Gene: ITGA2B and ITGB3

Variant: NM_000419.3:c.526C>G (p.Pro176Ala) and NM_000212.2:c.224del ,

LegacyVariant: (p.Pro145Ala)

ClinVar: N/A

CAiD: CA399805793 and CA8622899

gnomAD: MAF in the European non Fin pop is 0.000008795 for the ITGB3 variant

Case10: Patient PL, gender and age are not specified, all of these patients are Caucasian (either Italian or European)

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: N/A

CaseHPOFreeText: All patients presented with a current or past history of bleeding and a bleeding time >15 min. Bleeding symptoms were evaluated by examining available hospital records. Mild bleeders were defined as those who bled only after trauma or surgery or had minor symptoms, such as epistaxis. Moderate/severe bleeders were defined as those with a history of spontaneous or life threatening hemorrhages, such as gastrointestinal bleeding, or who had repeated episodes requiring platelet transfusions

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: See Table 1

PlateletAggregation: See Table 1

CasePreviousTesting: To identify point mutations responsible for GT, we have sequenced all coding regions of Ib and 3 genes and intron/exon boundaries.

Gene: ITGA2B

Variant: NM_000419.3:c.1742C>A (p.Ala581Asp)

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA399802112

gnomAD: N/A

Case15: Patient CE, gender and age are not specified, all of these patients are Caucasian (either Italian or European)

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: N/A

CaseHPOFreeText: All patients presented with a current or past history of bleeding and a bleeding time >15 min. Bleeding symptoms were evaluated by examining available hospital records. Mild bleeders were defined as those who bled only after trauma or surgery or had minor symptoms, such as epistaxis. Moderate/severe bleeders were defined as those with a history of spontaneous or life threatening hemorrhages, such as gastrointestinal bleeding, or who had repeated episodes requiring platelet transfusions

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: See Table 1

PlateletAggregation: See Table 1

CasePreviousTesting: To identify point mutations responsible for GT, we have sequenced all coding regions of Ib and 3 genes and intron/exon boundaries.

Gene: ITGA2B

Variant: NM_000419.3:c.2113T>C (p.Cys705Arg)

LegacyVariant: (p.Arg674Arg)

ClinVar: N/A

CAiD: CA8602816

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

Case21: Patient GI, gender and age are not specified, all of these patients are Caucasian (either Italian or European)

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: N/A

CaseHPOFreeText: All patients presented with a current or past history of bleeding and a bleeding time >15 min. Bleeding symptoms were evaluated by examining available hospital records. Mild bleeders were defined as those who bled only after trauma or surgery or had minor symptoms, such as epistaxis. Moderate/severe bleeders were defined as those with a history of spontaneous or life threatening hemorrhages, such as gastrointestinal bleeding, or who had repeated episodes requiring platelet transfusions

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: See Table 1

PlateletAggregation: See Table 1

CasePreviousTesting: To identify point mutations responsible for GT, we have sequenced all coding regions of Ib and 3 genes and intron/exon boundaries.

Gene: ITGB3

Variant: c.728T>T (Unregistered) GT database has the same variant listed and it won't show up in CAR

LegacyVariant: ^

ClinVar: ^

CAiD: ^

gnomAD: ^

Case14: Patient LRI, gender and age are not specified, all of these patients are Caucasian (either Italian or European)

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: N/A

CaseHPOFreeText: All patients presented with a current or past history of bleeding and a bleeding time >15 min. Bleeding symptoms were evaluated by examining available hospital records. Mild bleeders were defined as those who bled only after trauma or surgery or had minor symptoms, such as epistaxis. Moderate/severe bleeders were defined as those with a history of spontaneous or life threatening hemorrhages, such as gastrointestinal bleeding, or who had repeated episodes requiring platelet transfusions

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: See Table 1

PlateletAggregation: See Table 1

CasePreviousTesting: To identify point mutations responsible for GT, we have sequenced all coding regions of Ib and 3 genes and intron/exon boundaries.

Gene: ITGA2B

Variant: NM_000419.3:c.2113T>C (p.Cys705Arg)

LegacyVariant: (p.Arg674Arg)

ClinVar: N/A

CAiD: CA8602816

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

Case6: Patient FF, gender and age are not specified, all of these patients are Caucasian (either Italian or European)

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: N/A

CaseHPOFreeText: All patients presented with a current or past history of bleeding and a bleeding time >15 min. Bleeding symptoms were evaluated by examining available hospital records. Mild bleeders were defined as those who bled only after trauma or surgery or had minor symptoms, such as epistaxis. Moderate/severe bleeders were defined as those with a history of spontaneous or life threatening hemorrhages, such as gastrointestinal bleeding, or who had repeated episodes requiring platelet transfusions

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: See Table 1

PlateletAggregation: See Table 1

CasePreviousTesting: To identify point mutations responsible for GT, we have sequenced all coding regions of Ib and 3 genes and intron/exon boundaries.

Gene: ITGA2B

Variant: NM_000419.3:c.855dup

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA915940766

gnomAD: N/A

Case18: Patient ME, gender and age are not specified, all of these patients are Caucasian (either Italian or European)

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: N/A

CaseHPOFreeText: All patients presented with a current or past history of bleeding and a bleeding time >15 min. Bleeding symptoms were evaluated by examining available hospital records. Mild bleeders were defined as those who bled only after trauma or surgery or had minor symptoms, such as epistaxis. Moderate/severe bleeders were defined as those with a history of spontaneous or life threatening hemorrhages, such as gastrointestinal bleeding, or who had repeated episodes requiring platelet transfusions

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: See Table 1

PlateletAggregation: See Table 1

CasePreviousTesting: To identify point mutations responsible for GT, we have sequenced all coding regions of Ib and 3 genes and intron/exon boundaries.

Gene: ITGA2B

Variant: NM_000419.3:c.2929C>T (p.Arg977Ter)

LegacyVariant: (p.Arg946Ter)

ClinVar: N/A

CAiD: CA8602528

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

Case2: Patient PF, gender and age are not specified, all of these patients are Caucasian (either Italian or European)

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: N/A

CaseHPOFreeText: All patients presented with a current or past history of bleeding and a bleeding time >15 min. Bleeding symptoms were evaluated by examining available hospital records. Mild bleeders were defined as those who bled only after trauma or surgery or had minor symptoms, such as epistaxis. Moderate/severe bleeders were defined as those with a history of spontaneous or life threatening hemorrhages, such as gastrointestinal bleeding, or who had repeated episodes requiring platelet transfusions

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: See Table 1

PlateletAggregation: See Table 1

CasePreviousTesting: To identify point mutations responsible for GT, we have sequenced all coding regions of Ib and 3 genes and intron/exon boundaries.

Gene: ITGA2B

Variant: NM_000419.3:c.416C>T (p.Ala139Val)

LegacyVariant: (p.Ala108Val)

ClinVar: N/A

CAiD: CA399806036

gnomAD: N/A

Case13: Patient BM, gender and age are not specified, all of these patients are Caucasian (either Italian or European)

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: N/A

CaseHPOFreeText: All patients presented with a current or past history of bleeding and a bleeding time >15 min. Bleeding symptoms were evaluated by examining available hospital records. Mild bleeders were defined as those who bled only after trauma or surgery or had minor symptoms, such as epistaxis. Moderate/severe bleeders were defined as those with a history of spontaneous or life threatening hemorrhages, such as gastrointestinal bleeding, or who had repeated episodes requiring platelet transfusions

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: See Table 1

PlateletAggregation: See Table 1

CasePreviousTesting: To identify point mutations responsible for GT, we have sequenced all coding regions of Ib and 3 genes and intron/exon boundaries.

Gene: ITGA2B

Variant: NM_000419.3:c.2113T>C (p.Cys705Arg)

LegacyVariant: (p.Arg674Arg)

ClinVar: N/A

CAiD: CA8602816

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

Case19: Patient SM, gender and age are not specified, all of these patients are Caucasian (either Italian or European)

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: N/A

CaseHPOFreeText: All patients presented with a current or past history of bleeding and a bleeding time >15 min. Bleeding symptoms were evaluated by examining available hospital records. Mild bleeders were defined as those who bled only after trauma or surgery or had minor symptoms, such as epistaxis. Moderate/severe bleeders were defined as those with a history of spontaneous or life threatening hemorrhages, such as gastrointestinal bleeding, or who had repeated episodes requiring platelet transfusions

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: See Table 1

PlateletAggregation: See Table 1

CasePreviousTesting: To identify point mutations responsible for GT, we have sequenced all coding regions of Ib and 3 genes and intron/exon boundaries.

Gene: ITGB3

Variant: NM_000212.2:c.355C>T and NM_000212.2:c.1801T>C

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA8622924 and CA8623361

gnomAD: MAF in the South Asian population is 0.0001307 https://gnomad.broadinstitute.org/variant/17-45360909-C-T and MAF in the European non Finnish pop is 0.00001758 https://gnomad.broadinstitute.org/variant/17-45376784-T-C

Case25: Patient CD, gender and age are not specified, all of these patients are Caucasian (either Italian or European)

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: N/A

CaseHPOFreeText: All patients presented with a current or past history of bleeding and a bleeding time >15 min. Bleeding symptoms were evaluated by examining available hospital records. Mild bleeders were defined as those who bled only after trauma or surgery or had minor symptoms, such as epistaxis. Moderate/severe bleeders were defined as those with a history of spontaneous or life threatening hemorrhages, such as gastrointestinal bleeding, or who had repeated episodes requiring platelet transfusions

CaseNotHPOs: N/A

CaseNotHPOsFreeText: N/A

ProteinExpression: See Table 1

PlateletAggregation: See Table 1

CasePreviousTesting: To identify point mutations responsible for GT, we have sequenced all coding regions of Ib and 3 genes and intron/exon boundaries.

Gene: ITGA2B

Variant: NM_000212.2:c.1801T>C

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA8623361

gnomAD: MAF in the European non Finnish population is 0.00001758 https://gnomad.broadinstitute.org/variant/17-45376784-T-C

Case2: Female, 65 years old, Iraqi-Jewish origin

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: Her brother is the other proband in this article

ParentalGenotype: N/A

CasePresentingHPOs: HP:0000225, HP:0000225, HP:0031364, HP:0002249

(Gingival bleeding, epistaxis, ecchymosis, melena)

CaseHPOFreeText: N/A

CaseNotHPOs: N/A

CaseNotHPOFreeText: N/A

ProteinExpression: Surface expression GPIIb/IIIa was 11% of normal

PlateletAggregation: Platelet aggregation in response to thrombin, collagen, ADP and epinephrine was absent, whereas ristocetin induced aggregation was normal

CasePreviousTesting: DNA fragments containing exons and flanking intronic regions of the GPIIb gene were amplified by PCR

Gene: ITGA2B

Variant: NM_000419.3:c.1947-2A>G

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA399801096

gnomAD: N/A

Case1: Male, 52 years old, ethnicity not specified

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: One of the patient’s daughters carried the c.2437C>A mutation. The other daughter carried the c.1771_1772insG along with c.339C>G mutation, indicating that these mutations are on the same allele.

ParentalGenotype: N/A

CasePresentingHPOs: N/A

CaseHPOFreeText: Recurrent hemorrhagic symptoms, bleeding time >20 minutes and PFA-100 closure times were > 300 seconds

CaseNotHPOs: N/A

CaseNotHPOFreeText: N/A

ProteinExpression: Flow cytometric analysis showed a clearly detectable but strongly reduced amount of surface expressed GPIIb and GPIIIa

PlateletAggregation: Platelets failed to aggregate in response to ADP, arachidonic acid, epinephrine, and collagen.

CasePreviousTesting: Sequencing of exons of GPIIb gene was performed

Gene: ITGA2B

Variant: NM_000419.3:c.1771dup (p.Asp560GlyfsX16), NM_000419.3:c.2437C>A (p.His782Asn)

LegacyVariant: N/A

ClinVar: N/A

CAiD: CA915940334, CA399795907, CA500624465

gnomAD: N/A

Case8: Male, 31 years old, Tamil Nadu India

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: HP:0000421, HP:0031364, HP:0000967, HP:0000225, HP:0006298

(Epistaxis, ecchymosis, petechiae, gingival bleeding, prolonged bleeding after tooth extraction

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.2236G>T (p.Glu746Ter)

LegacyVariant: (p.Glu715Ter)

ClinVar: N/A

CAiD: CA399798321

gnomAD: N/A

Case11: Female, 16 years old, Tamil Nadu India

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: HP:0000225, HP:0006298, HP:0031364

(Gingival bleeding, prolonged bleeding after dental extraction, ecchymosis)

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: ITGB3

Variant: NM_000212.2:c.1801T>G (p.Cys601Gly)

LegacyVariant: (p.Cys575Gly)

ClinVar: N/A

CAiD: CA400032570

gnomAD: N/A

Case6: Male, 14 years old, Tamil Nadu India

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: HP:0000225, HP:0006298, HP:0000967

(Gingival bleeding, prolonged bleeding after tooth extraction, petechiae)

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.1651C>T (p.Arg551Trp)

LegacyVariant: (p.Arg520Trp)

ClinVar: N/A

CAiD: CA399802348

gnomAD: MAF in the East Asian population is 0.00005045https://gnomad.broadinstitute.org/variant/17-42457471-G-A

Case10: Female, 12 years old, Tamil Nadu India

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: HP:0000225, HP:0006298

(Gingival bleeding, prolonged bleeding after dental extraction)

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: ITGB3

Variant: 330_336TCCCCAGdel is not showing up in CAR noting it as Unregistered

LegacyVariant: N/A

ClinVar: N/A

CAiD: Unregistered

gnomAD: N/A

Case4: Male, 22 years old, Tamil Nadu India

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: N/A

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

(Prolonged bleeding after tooth extraction, epistaxis, GI bleeding, 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.1162G>A (p.Gly388Ser)

LegacyVariant: (p.Gly357Ser)

ClinVar: N/A

CAiD: CA8603212

gnomAD: N/A

Case9: Male, 20 years old, Tamil Nadu India

DiseaseAssertion: Glanzmann thrombasthenia

FamilyInfo: N/A

ParentalGenotype: N/A

CasePresentingHPOs: HP:0000421, HP:0031364, HP:0000225, HP:0006298

(Epistaxis, ecchymosis, gingival bleeding, prolonged bleeding after dental extraction)

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.2489T>G (p.Leu830Arg)

LegacyVariant: (p.Leu799Arg)

ClinVar: N/A

CAiD: CA8602667

gnomAD: MAF in the South Asian population is 0.00003270 https://gnomad.broadinstitute.org/variant/17-42453313-A-C