Also, mTOR regulates the cell proliferation through controlling the production of cyclin D1 [52] Thus, several clinical studies revealed that inhibition of mTOR might be a good target for cancer therapy [20, 53] and several drugs such as everolimus, ridaforolimus, and temsirolimus as mTOR inhibitors have been used for clinical trials [54–56]. The gene discussed is CCND1; the disease is cancer.