Interestingly, MIR3613 locus (13q14.2) located near tumor suppressor genes RB1 (13q14.2) and BRCA2 (13q13.1) on chromosome 13 and copy number of this gene segment in breast cancer was frequently altered (Fig. 1b, Supplementary Fig. 1A) [12]. Here, RB1 is linked to breast cancer.