In cancer cell lines with a basal-like, triple-negative phenotype, Milevskiy et al. demonstrated that BRCA1, known to bind promoters of numerous genes in human breast, affects the expression of miR-29b1-5p, consistent with the six binding sites for BRCA1 found inside the promoter region of miR-29a/b1 [25]. This evidence concerns the gene BRCA1 and cancer.