LOS ANGELES--(BUSINESS WIRE)--Response Genetics, Inc. (Nasdaq:RGDX), a company focused on the development and sale of molecular diagnostic tests for cancer, announced today it has signed a nonexclusive license with Roche Diagnostics for the use of Response Genetics’ patented PCR analysis to assess human epidermal growth factor type 2 (HER2) gene expression. The accurate measurement of HER2 gene expression can assist physicians with treatment decisions for patients with cancers in tissues such as breast.