Moreover, we ascertained that the inhibited migratory capability mediated by BRL was not due to a decrease in cell viability, since when MCF-7 and MDA-MB-231 cells were incubated with 10 μM BRL for 24 h ∼90% of breast cancer cells were still viable (Supplementary Figure S2A). Here, BRD1 is linked to breast carcinoma.