KCNMA1 and breast carcinoma: We used gene expression profile study to identify increased KCNMA1 expression in a breast cancer cell line metastatic to brain (MDA-MB-361) (Figure 1) as compared to expression in a primary, breast cancer cell line (MCF-7) or breast cancer cell line metastatic to other organs (MDA-MB-231) of the body but not to brain.