Genetic profiling vies with IHC in retune of CUP testing
March 2015—Tesla beats Camry. Online catalogs replace paper. Keurig edges out Chemex. Mobile trounces landline. When paradigms shift, the theory goes, we can only cling to the technology in the outbox for just so long. But that’s a theory that may not apply to diagnostic testing for cancer of unknown primary (CUP). Microarray-based gene expression profiling (GEP) has recently gained a foothold in the quest to identify origins and therapeutic targets for metastatic cancer, but traditional immunohistochemistry is not about to be sidelined.