LINK-A, a newly identified lncRNA, exerts oncogenic functions in different types of tumors, including breast cancer (Lin et al., 2017b; Lin et al., 2016b), glioma (Hua et al., 2019), metastatic osteosarcoma (Zhao, Liu & Cai, 2019), Non-small-cell lung cancer (Zhao et al., 2018), and MCL (Zhang et al., 2019). Here, LINC01139 is linked to breast cancer.