Recently, results of others indicated that miR-136 enhanced phosphorylation of Erk1/2 through inhibition of PPP2R2A expression to promoted cell proliferation in human non-small cell lung cancer, and the sequence at position 149–155 of the PPP2R2A 3′-UTR was determined to be the target site of miR-136 [25]. The gene discussed is MAPK3; the disease is non-small cell lung carcinoma.