raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:268322

Hereditary isolated thrombocytopenia with normal platelets size

Type
Disease
Group
Disorder
Inheritance
Autosomal dominant, Autosomal recessive, X-linked recessive
Age of onset
All ages
Status
active

A rare, genetic, isolated constitutional thrombocytopenia disease characterized by decreased platelet counts, not associated with platelet morphology or function impairment, in multiple members of a family. Manifestations are variable, typically ranging from asymptomatic to mild bleeding diathesis (e.g. easy bruising, epistaxis, petechiae). Occasionally, a more severe bleeding tendency has been associated and a mild predisposition to infection and eczema has been reported.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enHereditary isolated thrombocytopenia with normal platelets size
frThrombocytopénie héréditaire isolée avec plaquettes de taille normale
deHereditäre isolierte Thrombozytopenie mit normaler Thrombozytengröße
esTrombocitopenia aislada hereditaria con plaquetas de tamaño normal
itTrombocitopenia ereditaria isolata con piastrine normali
nlErfelijke geïsoleerde trombocytopenie met normale bloedplaatjesHereditaire geïsoleerde trombocytopenie met normale trombocyten
ptTrombocitopenia hereditária com plaquetas normais
plDziedziczna małopłytkowość z prawidłowymi płytkami krwi
csDědičná trombocytopenie s normálními destičkami
ukСпадкова тромбоцитопенія з нормальними тромбоцитами
zh血小板正常的遗传性血小板减少症
trNormal trombositler ile seyreden kalıtsal trombositopeni

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM188000BTNTvalidated
OMIM273900BTNTvalidated
OMIM313900BTNTvalidated
OMIM612004BTNTvalidated
ICD-10D69.4NTBTattributedvalidated
ICD-113B64.01NTBTattributedvalidated
MONDO0017057Evalidated
UMLSC5190888Evalidated

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):

Children (2):

4

Genes

0 direct · 6 via subtypes

Orphanet records no gene directly on this code.

Recorded by Orphanet on subtypes of this disorder:

GeneSubtypeAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
ANKRD26ORPHA:168629Autosomal isolated thrombocytopenia with normal platelets sizeDisease-causing germline mutation(s) inAssessedHGNC:29186ENSG0000010789061085510p12.1ankyrin repeat domain 2626175287[PMID]
CYCSORPHA:168629Autosomal isolated thrombocytopenia with normal platelets sizeDisease-causing germline mutation(s) inAssessedHGNC:19986ENSG000001721151239707p15.3cytochrome c, somatic18345000[PMID]_24326104[PMID]
ETV6ORPHA:168629Autosomal isolated thrombocytopenia with normal platelets sizeDisease-causing germline mutation(s) inAssessedHGNC:3495ENSG0000013908360061812p13.2ETS variant transcription factor 627365488[PMID]
IKZF5ORPHA:168629Autosomal isolated thrombocytopenia with normal platelets sizeDisease-causing germline mutation(s) inAssessedHGNC:14283ENSG0000009557460623810q26.13IKAROS family zinc finger 531217188[PMID]
MASTLORPHA:168629Autosomal isolated thrombocytopenia with normal platelets sizeDisease-causing germline mutation(s) inAssessedHGNC:19042ENSG0000012053960822110p12.1microtubule associated serine/threonine kinase like12890928[PMID]
WASORPHA:852X-linked isolated thrombocytopenia with normal platelets sizeDisease-causing germline mutation(s) inAssessedHGNC:12731ENSG00000015285300392Xp11.23WASP actin nucleation promoting factor20301357[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

Orphanet has no HPO annotation for this code in this release.

7

Sources for this card