RBM10 is a member of the RNA‐binding protein (RBP) family, is located at position p11.23 of the X‐chromosome, and is known for its role in mRNA splicing.8 Initial functional studies have demonstrated that RBM10 can promote apoptosis9 and suppress cell proliferation.10, 11 Furthermore, its expression was found to be correlated with increased expression of the proapoptotic protein BAX and the tumour suppressor protein TP53 in breast cancer.13 These findings suggest RBM10 as a potential tumour suppressor. The gene discussed is RBM10; the disease is breast cancer.