CALR Exon 9 Deletion Mutation

**Semantic type:** Cell or Molecular Dysfunction

**Definition:** A molecular genetic abnormality indicating the presence of a deletion mutation in exon 9 of the CALR gene. These deletion mutations are associated with primary myelofibrosis and may be predicative of a favorable survival prognosis.

**Synonyms:** - Autoantigen Ro Gene Exon 9 Deletion Mutation - CRT Exon 9 Deletion Mutation - Calreticulin Gene Exon 9 Deletion Mutation - RO Exon 9 Deletion Mutation - cC1qR Exon 9 Deletion Mutation