JAK2 Gene Mutation

**Semantic type:** Cell or Molecular Dysfunction

**Definition:** Mutation of the Janus 2 kinase gene at chromosome 9. It is seen in most patients with polycythemia vera and less frequently in other myeloproliferative neoplasms.

**Synonyms:** - JAK-2 Gene Mutation - JAK2 - JAK2 Gene Variant - JAK2 Mutation - JTK10 Gene Mutation - Janus Kinase 2 (A Protein Tyrosine Kinase) Gene Variant - Janus Kinase 2 Gene Mutation - Janus Kinase 2 Gene Variant