raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:3002

Immune thrombocytopenia

Synonyms: ITP · Immune thrombocytopenic purpura

Type
Disease
Group
Disorder
Inheritance
Not applicable
Age of onset
All ages
Status
active

A rare autoimmune coagulation disorder characterized by isolated thrombocytopenia (a platelet count <100,000/microL), in the absence of any underlying disorder that may be associated with thrombocytopenia.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enImmune thrombocytopeniaITP · Immune thrombocytopenic purpura
frThrombopénie immunePurpura thrombopénique immunologique · TPI · Thrombocytopénie immune
deImmunthrombozytopenieITP · Purpura, immune thrombozytopenische
esTrombocitopenia inmuneITP · PTI · Púrpura trombocitopénica inmune
itTrombocitopenia immuneITP · Porpora trombocitopenica autoimmune · Trombocitopenia immune
nlImmuuntrombocytopenieITP · Immuuntrombocytopenische purpura
ptTrombocitopénica imunePúrpura trombocitopénica imune
plPierwotna małopłytkowość immunologicznaITP · plamica małopłytkowa, autoimmunologiczna
csIdiopatická trombocytopenická purpuraITP · Imunitní trombocytopenie · Autoimunitní trombocytopenická purpura
ukІмунна тромбоцитопеніяІмунна тромбоцитопенічна пурпура · ITP
zh免疫性血小板减少症免疫性血小板减少性紫癜
trİmmün trombositopeniITP · İmmün trombositopenik purpura

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM188030Evalidated
ICD-10D69.3NTBTattributedvalidated
ICD-113B64.10Especificvalidated
MONDO0008558Evalidated
MeSHD016553Evalidated
UMLSC0398650Evalidated
GARD5194Evalidated
MedDRA10083842Evalidated

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

1 direct
GeneAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
FCGR2CCandidate gene tested inNot yet assessedHGNC:15626ENSG000002446826121691q23.3Fc gamma receptor IIc (gene/pseudogene)17827395[PMID]
5

Prevalence and incidence

7 records
TypeClassValueAreaQualificationValidationSource
Point prevalence1-5 / 10 00025 / 100 000EuropeValue and classValidatedEuropean Medicines Agency 2007[OTHER]
Point prevalence1-9 / 100 0009.5 / 100 000United StatesValue and classValidated19200301[PMID]
Annual incidence1-9 / 100 0003.9 / 100 000United KingdomValue and classValidated19245432[PMID]
Annual incidence1-9 / 100 0006.75 / 100 000EuropeValue and classNot yet validatedISBN:70703868[OTHER]_ORPHANET
Annual incidence1-9 / 100 0002.68 / 100 000DenmarkValue and classValidated10419881[PMID]
Point prevalence1-5 / 10 00045 / 100 000DenmarkValue and classValidated20066507[PMID]
Annual incidence1-9 / 100 0002.9 / 100 000FranceValue and classValidated25305203[PMID]

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 2024-02-16
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0001873Thrombocytopenia
Frequent (79-30%)
HP:0025329Anti-glutamic acid decarboxylase antibody positivity
HP:0034062Anti-insulin antibody positivity
HP:0034063Anti-islet antigen-2 antibody positivity
HP:4000170Anti-platelet antigen antibody positivity
HP:0032069Anti-thyroglobulin antibody positivity
HP:0025379Anti-thyroid peroxidase antibody positivity
HP:0034189Anti-thyroid-stimulating hormone receptor antibody positivity
HP:0004420Arterial thrombosis
HP:0030908Liver kidney microsome type 1 antibody positivity
HP:0000967Petechiae
HP:0000979Purpura
Occasional (29-5%)
HP:0034263Abnormal vaginal bleeding
HP:0000978Bruising susceptibility
HP:0000421Epistaxis
HP:0002239Gastrointestinal hemorrhage
HP:0000225Gingival bleeding
HP:0000790Hematuria
Very rare (<4-1%)
HP:0001342Cerebral hemorrhage
HP:0011885Hemorrhage of the eye

Run the differential on the 1 obligate / very frequent terms

Annotation source: 32965953[PMID]_30725925[PMID]_27817251[PMID]_27222699[PMID]_26869291[PMID]_26456477[PMID]

7

Sources for this card