MEX3A and metastasis: The multivariable Cox proportion hazards model adjusted for the mex3a expression group, and the group that included age, gender, cancer subtype, cancer status, pathologic stage, pathologic size, pathologic lymph metastasis, and lymphatic vascular invasion indicated that the older age group and the group with tumor were associated with OS (P=0.002, HR=2.653, P<0.000, HR=6.762, respectively).