ERBB2/Chromosome 17 Copy Number Ratio Finding

**Semantic type:** Laboratory or Test Result

**Definition:** A genetic copy number finding indicating the ratio of the number of signals for a probe targeting the ERBB2 gene to the number of signals for a probe targeting chromosome 17.

**Synonyms:** - ERBB2/Chromosome 17 Copy Number Ratio - Her2/Chromosome 17 Copy Number Ratio - Her2/Neu/Chromosome 17 Copy Number Ratio