GAS5 and breast cancer: In other studies of breast cancer, different miRNAs, including miR-221/222, miR-196a-5p, miR-378a-5p/SUFU, and miR-21, have been shown to sponge with GAS5 (Li et al., 2016; Mei et al., 2017; Xue et al., 2017; Gu et al., 2018a; Li et al., 2018; Toraih et al., 2018; Zhao et al., 2018; Dong et al., 2019; Yang and Jiang, 2019; Zong et al., 2019; Wang, Ke et al., 2020; Zheng et al., 2020).