raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:566393

Acute mast cell leukemia

Synonyms: Acute MCL

Type
Clinical subtype
Group
Subtype of disorder
Inheritance
Not applicable
Status
active

A rare systemic mastocytosis characterized by the presence of at least 20% usually immature and atypical mast cells in bone marrow aspirate smears. In classic mast cell leukemia, mast cells account for at least 10% of peripheral white blood cells, although the aleukemic variant with less than 10% mast cells is more common. C-findings (cytopenias, hepatomegaly, ascites, portal hypertension, splenomegaly, skeletal lesions, malabsorption), indicative of organ damage due to mast cell infiltration, are usually present at diagnosis, while skin lesions are absent in most cases. Prognosis is generally poor.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enAcute mast cell leukemiaAcute MCL
frLeucémie aiguë à mastocytesLM aiguë
deMastzell-Leukämie, akuteAkute MCL
esLeucemia mastocitaria aguda
itLeucemia mastocitaria acutaMCL acuta
nlAcute mestcelleukemie= en
ptLeucemia aguda de mastócitos
plOstra białaczka mastocytowa= en
csAkutní mastocytární leukémie= en
ukГостра тучноклітинна лейкеміяГостра MCL
zh急性肥大细胞白血病= en
trAkut mast hücreli lösemiAkut MCL

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
ICD-10C94.3NTBTattributedvalidated
ICD-112A21.00NTBTattributedvalidated
MONDO0035444Evalidated
UMLSC5680128Evalidated

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
KITDisease-causing germline mutation(s) inAssessedHGNC:6342ENSG000001574041649204q12KIT proto-oncogene, receptor tyrosine kinase25729733[PMID]_22324351[PMID]
5

Prevalence and incidence

0 records

No prevalence record in this release.

6

HPO phenotypes

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

7

Sources for this card