In order to evaluate whether miR-767-5p promoted progression of MM by specifically targeting MAPK4, we examined four groups of MM cell models: miR-767-5p mimics, miR-767-5p mimics+MAPK4 over-expression, miR-767-5p inhibitor, miR-767-5pinhibitor + sh-MAPK4. Here, MAPK4 is linked to Miyoshi myopathy.