MACC1 and neoplasm: On the contrary, MACC1 overexpression was not found to be associated with age (OR = 1.200, 95% CI = 0.834-1.726, random-effect model), tumor size (OR = 1.475, 95% CI = 0.798-2.728, random-effect model), tumor grade (OR = 1.329, 95% CI = 0.851-2.076, fixed-effect model), or distant metastasis (OR = 1.925, 95% CI = 0.761-4.870, random-effect model).