EGFR Exon 18 Mutation

**Semantic type:** Cell or Molecular Dysfunction

**Definition:** A molecular genetic abnormality indicating the presence of a mutation in exon 18 of the EGFR gene.

**Synonyms:** - ERBB Exon 18 Mutation - ERBB1 Exon 18 Mutation - Epidermal Growth Factor Receptor Gene Exon 18 Mutation - HER1 Exon 18 Mutation