Studies have shown that microRNA such as miR-204 (Yang et al., 2018), miR-375 (Tang et al., 2019), and miR-3178 (Kong et al., 2018) could play important roles in the occurrence and development of TNBC, while microRNA could also participate in the regulation of CCNE1 in tumor (Li et al., 2019). This evidence concerns the gene CCNE1 and neoplasm.