In addition, CCND2 can be regulated by miR-206 [25], miR-340 [26], miR-154 [27], miR-133a [28], miR-155 [29], miR-1 [30], miR-16 [31], miR-610 [32], miR-26a [33], miR-195 [34], and miR-204 [35], which have roles in cellular proliferation disorders (e.g., breast cancer, cervical carcinoma, and retinoblastoma). The gene discussed is CCND2; the disease is retinoblastoma.