The results showed that both mRNA and protein levels of MEIOB were dramatically upregulated in two TNBC cell lines, MDA-MB-231 and MDA-MB-468, while they were significantly lower in either normal breast epithelium or luminal breast cancer cells (Supplementary Figure S1A and S1B), indicating that MEIOB might play an important role in a subset of TNBCs. The gene discussed is MEIOB; the disease is breast cancer.