After analyzing the correlation of c-Myc and lncRNA KB-1980E6.3 levels in breast cancer tissues from TCGA, we further found a positive correlation between c-Myc mRNA and lncRNA KB-1980E6.3 levels (r = 0.4514, P < 0.001) in breast tumors (Fig. 4f). Here, MYC is linked to breast cancer.