To study the function of INHBA in BC cells, the mRNA and protein level of INHBA in four BC cell lines (MCF-7, MDA-MB-436, MDA-MB-231 and BT549) was compared to that in a non-tumorigenic epithelial cell-line MCF-10A by RT-qPCR and western blot. The gene discussed is INHBA; the disease is breast cancer.