raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:849

Glanzmann thrombasthenia

Type
Disease
Group
Disorder
Inheritance
Autosomal recessive
Age of onset
Infancy, Neonatal
Status
active

Glanzmann thrombasthenia (GT) is a bleeding syndrome characterized by spontaneous mucocutaneous bleeding and an exaggerated response to trauma due to a constitutional thrombocytopenia.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enGlanzmann thrombasthenia
frThrombasthénie de Glanzmann
deThrombasthenie Glanzmann
esTrombastenia de Glanzmann
itTromboastenia di Glanzmann
nlGlanzmann-trombasthenie
ptTrombastenia Glanzmann
plTrombastenia Glanzmanna
csGlanzmannova trombastenie
ukТромбастенія Гланцмана
zhGlanzmann血小板减少症
trGlanzmann trombastenisi

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM273800BTNTvalidated
OMIM619267BTNTvalidated
ICD-10D69.1NTBTinclusionvalidated
ICD-113B62.0YNTBTindexvalidated
MONDO0100326Evalidated
UMLSC0040015Evalidated
GARD2478Evalidated

E exact · NTBT this ORPHAcode is narrower than the target · BTNT broader than the target · ND not decided.

3

Classification

Preferential parent (Orphanet linearisation):

Parents in the classifications (1):

No children.

4

Genes

2 direct
GeneAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
ITGA2BDisease-causing germline mutation(s) inAssessedHGNC:6138ENSG0000000596160775917q21.31integrin subunit alpha 2b21917754[PMID]
ITGB3Disease-causing germline mutation(s) inAssessedHGNC:6156ENSG0000025920717347017q21.32integrin subunit beta 321917754[PMID]
5

Prevalence and incidence

1 record
TypeClassValueAreaQualificationValidationSource
Point prevalenceUnknown—WorldwideClass onlyNot yet validatedORPHANET

Value is Orphadata's ValMoy: the mean estimate per 100 000 for prevalence and incidence, the number of cases or families for case reports.

6

HPO phenotypes

20 annotations · validated 2019-02-12
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0003010Prolonged bleeding time
HP:0004406Spontaneous, recurrent epistaxis
Frequent (79-30%)
HP:0000978Bruising susceptibility
HP:0000225Gingival bleeding
HP:0004846Prolonged bleeding after surgery
HP:0030137Prolonged bleeding following circumcision
Occasional (29-5%)
HP:0031364Ecchymosis
HP:0002239Gastrointestinal hemorrhage
HP:0012587Macroscopic hematuria
HP:0400008Menometrorrhagia
HP:0000132Menorrhagia
HP:0000979Purpura
HP:0007420Spontaneous hematomas
Very rare (<4-1%)
HP:0011871Impaired ristocetin-induced platelet aggregation
Excluded (0%)
HP:0004866Impaired ADP-induced platelet aggregation
HP:0011870Impaired arachidonic acid-induced platelet aggregation
HP:0031128Impaired collagen-related peptide-induced platelet aggregation
HP:0008148Impaired epinephrine-induced platelet aggregation
HP:0011872Impaired thrombin-induced platelet aggregation
HP:0011894Impaired thromboxane A2 agonist-induced platelet aggregation

Run the differential on the 2 obligate / very frequent terms

Annotation source: 27539755[PMID]_30031712[PMID]_29985398[PMID]_26185478[PMID]_29575615[PMID]_25728920[PMID]

7

Sources for this card