Trait

Hemangioblastoma

A hemangioblastoma is a benign vascular neoplasm that arises almost exclusively in the central nervous system. Hemangioblastomas consist of a tightly packed cluster of small blood vessels forming a mass of up to 1 or 2 cm in diameter.

HPO HP:0010797

Also called: Haemangioblastoma
Body system: Abnormality of the nervous system Abnormal tissue mass

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2 genes linked to Hemangioblastoma

Changes in these genes cause rare conditions in which Hemangioblastoma is seen. Most people with this trait have none of those conditions, and a gene on this list says nothing about anyone's own genome.

Gene	How often it is seen	Conditions
BMPR1Abone morphogenetic protein receptor type 1A	Sometimes (5–29%)	In 1 condition
PTENphosphatase and tensin homolog	Sometimes (5–29%)	In 1 condition

How often is among people with one of the gene's conditions, the most often across them, as the Human Phenotype Ontology records it. These pages describe traits and the research behind them; they are not a diagnosis, and a doctor or genetic counsellor is the person to ask about symptoms.

Narrower traits

Broader traits

Benign neoplasm of the central nervous system

Where this comes from

The Human Phenotype Ontology, release 2026-09-01: the trait, its names, its definition and the genes linked to it. Find out more at hpo.jax.org.
Data release 2026.10.16-c6eea6bf.

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