raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:100020

Myelodysplastic neoplasm with increased blasts type 2

Synonyms: MDS-IB2 · RAEB-2 · Refractory anemia with excess blasts type 2

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

A very severe type of RAEB characterized by cytopenias and the following hematological parameters: uni- or multilineage dysplasia, 10% to 19% blasts in bone marrow or 5% to 19% in peripheral blood, variable presence of Auer rods (abnormal, needle-shaped or round inclusions in the cytoplasm of myeloblasts and promyelocytes). Median survival has been reported to be 18 months.

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Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enMyelodysplastic neoplasm with increased blasts type 2MDS-IB2 · RAEB-2 · Refractory anemia with excess blasts type 2
frTumeur myélodysplasique avec augmentation des blastes type 2AREB-2 · Anémie réfractaire avec excès de blastes type 2 · RAEB-2
deMyelodysplastische Neoplasie mit erhöhtem Blastenanteil Typ 2Anämie, refraktäre, mit Blastenexzess-2 · MDS-IB2 · RAEB-2
esNeoplasia mielodisplásica con aumento de blastos tipo 2Anemia refractaria con exceso de blastos tipo 2 · MDS-IB2 · RAEB-2 · Síndrome mielodisplásico con aumento de blastos tipo 2
itNeoplasia mielodisplastica con aumento dei blasti tipo 2Anemia refrattaria con eccesso di blasti tipo 2 · MDS-IB2 · RAEB-2
nlMyelodysplastisch neoplasma met overmaat aan blasten type 2MDS met overmaat aan blasten type 2 · MDS-IB2 · RAEB-2 · Refractaire anemie met exces van blasten type 2
ptNeoplasia mielodisplásica com excesso de blastos tipo 2Anemia refratária com excesso de blastos tipo 2 · MDS-IB2 · RAEB-2
plNowotwór mielodysplastyczny ze zwiększoną liczbą blastów typu 2RAEB-2
csRefrakterní anémie s nadbytkem blastů, typ 2RAEB-2
ukМієлодиспластичне новоутворення з підвищеною кількістю бластів, тип 2MDS-IB2 · RAEB-2 · Рефрактерна анемія з надлишком бластів, тип 2
zh难治性贫血伴母细胞过多2型RAEB-2
trTip 2 aşırı blastlı refrakter anemiRAEB-2

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
ICD-10D46.2NTBTattributedvalidated
ICD-112A35NTBTindexvalidated
MONDO0015041Evalidated
UMLSC4704767Evalidated

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

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Classification

Preferential parent (Orphanet linearisation):

Parents in the classifications (1):

No children.

4

Genes

1 direct
GeneAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
TET2Disease-causing somatic mutation(s) inAssessedHGNC:25941ENSG000001687696128394q24tet methylcytosine dioxygenase 219483684[PMID]_19557078[PMID]
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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.

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Sources for this card