ESR1 and breast carcinoma: An interesting study by Messaoudi et al. showed the cytotoxic activity of ethyl acetate and ethanolic I. viscosa extracts harvested from three different regions of Morocco (Taouante, Sefrou, and Imouzzer) in two breast cancer cell lines, MCF7, an estrogen receptor-positive cell line, and MDAMB-231, an estrogen receptor-negative cell line.