Interestingly, MAPK1 was also identified as a target gene of miR-940 [27], miR-362 [28], miR-585-3p [29], miR-378 [30], and miR-145 [31], and these miRNAs inhibit the proliferation of tumor or cancer cells through targeting MAPK1, which indicates that MAPK1 could be targeted by multiple miRNAs to regulate cell proliferation. Here, MAPK1 is linked to cancer.