The median concentration of Ki-67 was significantly higher in the abstinent individuals as compared with occasional drinkers (0.0169 (0.0106–0.0350) vs. 0.0014 (0.0003–0.0023); p = 0.0081), and in abstinents compared with regular drinkers (0.0169 (0.0106–0.0350) vs. 0.0012 (0.0004–0.0034); p = 0.0121) in the tumor samples. This evidence concerns the gene MKI67 and neoplasm.