In order to better understand the importance of NRIP1 in human breast cancers, we first evaluated the expression of NRIP1 mRNA using real-time PCR in three luminal cell lines (ZR75, MCF7, and T47D), five basal or triple negative lines (HCC1806, MX-1, BT20, Hs578T and MDA-MB-231) and one HER2+ line (HCC1954). The gene discussed is ERBB2; the disease is breast cancer.