Oligoastrocytoma, dual genotype

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Oligoastrocytoma, dual genotype

ORPHA:251656Disease

Also called MOA · Mixed oligoastrocytoma · Oligoastrocytoma, dual genotype NEC · Oligoastrocytoma, dual genotype, not elsewhere classified

What it is

Oligoastrocytoma is a type of low-grade glioma with a mixed astrocytoma and oligodendroglioma histology, manifesting with headaches, speech and motor problems, seizures and, in some, subarachnoid haemorrhage.

Key facts

Classified as
Disease

Recorded for the broader condition

Prevalence
1-9 / 1 000 000 (annual incidence, Europe)Oligoastrocytic tumor

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

IDH2Biomarker tested

ICD-10 codes

C71.9filed under a broader ICD-10 category — shared with 26 other rare diseases

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

GARD 9769MEDDRA 10073131MONDO 0016702UMLS C0547065

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.

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