TOP2A Gene Copy Number/Chromosome 17 Copy Number in Tissue by FISH

**Semantic type:** Laboratory Procedure

**Definition:** A quantitative fluorescent in situ hybridization-based procedure that measures the number of copies of the TOP2A gene per the number of copies of chromosome 17 in a tissue specimen.

**Synonyms:** - TOP2A gene copy number/Chromosome 17 copy number in Tissue by FISH