Other lines such as MDA-MB-468 cells, which belong to the basal-A subtype and are associated with intermediate invasive activity; SK-BR-3 cells, that overexpress the Her2 gene product; ZR-75-1 cell lines, derived from human Caucasian breast carcinoma; and T-47D cells, human epithelial breast tumor cells, were used less frequently. Here, ERBB2 is linked to breast carcinoma.