ERBB2 Exon 21 Mutation

**Semantic type:** Cell or Molecular Dysfunction

**Definition:** A change in the nucleotide sequence of exon 21 of the ERBB2 gene.

**Synonyms:** - CD340 Exon 21 Mutation - ERBB2 Exon 21 Gene Mutation - Erb-B2 Receptor Tyrosine Kinase 2 Exon 21 Mutation - HER-2 Exon 21 Mutation - HER2 Exon 21 Mutation - HER2/Neu Exon 21 Mutation - Neu Exon 21 Mutation - c-erbB2 Exon 21 Mutation