The findings revealed that the expression of MAP2K1 was significantly higher in GC cells transfected with contemporaneous PCMV-MAP2K1 compared with miR-34c-5p mimic, and decreased significantly in GC cells transfected with MAP2K1 siRNA compared with miR-34c-5p finhibitor group (Figure 4(a)). Here, MAP2K1 is linked to gastric cancer.