Caring for someone with this diagnosis? Eleplan keeps diagnoses, medications, documents and every specialist in one plan.
Start free with EleplanMyelodysplastic neoplasm with increased blasts type 1
ORPHA:100019Clinical subtype
Also called MDS-IB1 · RAEB-1 · Refractory anemia with excess blasts type 1
What it is
A severe type of RAEB characterized by cytopenias and the following hematological parameters: uni- or multilineage dysplasia, 5% to 9% blasts in bone marrow or 2% to 4% in peripheral blood, and no Auer rods (abnormal, needle-shaped or round inclusions in the cytoplasm of myeloblasts and promyelocytes). Median survival has been reported to be 18 months.
Key facts
- Age of onset
- Adult
- Inheritance
- Not applicable
- Classified as
- Clinical subtype
Recorded for the broader condition
- Prevalence
- 1-9 / 1 000 000 (annual incidence, Europe)Myelodysplastic neoplasm with increased blasts
Orphanet records these for the broader condition rather than for this specific form. They are a starting point, not a figure for this subtype — subtypes often differ, and some are defined by being rarer than the condition they sit under.
Gene
ICD-10 codes
ICD-10 has no distinct code for most rare diseases, so many are filed under the nearest available one. A shared code identifies the group, not this disease — the ORPHAcode above is what identifies it.
Related health topics
Reached through the ICD-10 categories this disease is filed under, so these describe the broader group rather than this disease specifically.
Cross-references
Orphadata Science: Free access data from Orphanet. © INSERM 1999. Data version 2026-06-23. Available under CC BY 4.0. This is a reference, not medical advice.
Powered by Eleplan
A rare diagnosis is just the start. Eleplan keeps the whole care plan in one place.
Diagnoses, medications, documents, appointments, and the whole care team — organized and always in sync, so you are not retelling the same story to every new specialist. With Ellie, your AI care assistant, on top of it. Free to start.