raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:98823

Chronic myelomonocytic leukemia

Synonyms: CMML

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

A rare myelodysplastic/myeloproliferative neoplasm characterized by a spectrum of clinical, hematological, and morphological features, ranging from predominantly myelodysplastic to mainly myeloproliferative in nature, with blood monocytosis (> 1G/L, constituting > 10% of circulating leukocytes). Is it often associated with blood cytopenia and/or ''proliferative features'' (increased leukocyte counts, splenomegaly), with marrow dysplasia and risk of progression to acute myeloid leukemia (AML).

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enChronic myelomonocytic leukemiaCMML
frLeucémie myélomonocytaire chroniqueLMMC · Syndrome myélomonocytaire chronique
deLeukämie, chronische myelomonozytäre= en
esLeucemia mielomonocítica crónicaLMMC
itLeucemia mielomonocitica cronica
nlChronische myelomonocytaire leukemie= en
ptLeucemia mielomonocítica crónica
plPrzewlekła białaczka mielomonocytowa= en
csChronická myelomonocytická leukémie= en
ukХронічна мієломоноцитарна лейкемія= en
zh慢性粒-单核细胞白血病= en
trKronik miyelomonositik lösemi= en

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
ICD-10C93.1Especificvalidated
ICD-112A40Especificvalidated
MONDO0020311Evalidated
MeSHD015477Evalidated
UMLSC0023480Evalidated
GARD8225Evalidated
MedDRA10009018Evalidated

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

3 direct
GeneAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
ASXL1Candidate gene tested inNot yet assessedHGNC:18318ENSG0000017145661299020q11.21ASXL transcriptional regulator 131723789[PMID]
SRSF2Candidate gene tested inNot yet assessedHGNC:10783ENSG0000016154760081317q25.2serine and arginine rich splicing factor 231723789[PMID]
ETV6Part of a fusion gene inAssessedHGNC:3495ENSG0000013908360061812p13.2ETS variant transcription factor 68168137[PMID]_7742547[PMID]
5

Prevalence and incidence

1 record
TypeClassValueAreaQualificationValidationSource
Annual incidence1-9 / 1 000 0000.68 / 100 000WorldwideValue and classValidated30690330[PMID]_32501529[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

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

7

Sources for this card