The expression of SMC1 was checked at both RNA (RT-PCR) and protein (western blot) level in a panel of TNBC cell lines (MDA-MB-231, hs578, MDA-MB-468, MDA-MB-436 and HCC1937) and compared with a ER+/hormone responsive luminal epithelial breast cancer cell (MCF7) and a non-tumorigenic mammary epithelial (MCF10a) cell line (Table 1). Here, SMC1A is linked to breast carcinoma.