Wu et al. (2021) clarified that circ_0000511 accelerated breast cancer progression by using miR-326 to elevate TAZ level. Dou’s group revealed the upregulation of circ_0008039 in breast cancer tissues and cells. Based on their research, it could positively mediate SKA2 expression via binding to miR‐140‐3p, leading to the development of breast cancer (Dou et al., 2021). This evidence concerns the gene SKA2 and breast cancer.