MAP2K1 and gastric cancer: 5‐Aza‐2′‐deoxycytidine could repress MEK1 in SNU‐601 cells and TEAD4 in MKN74 cells only slightly (Figure S2), suggesting that the epigenetic silencing of miR‐1271 may be only a partial mechanism underlying the enhanced expression of MEK1 and TEAD4 in GC.