Similarly, the rate of strong, positive NQO1 protein expression was significantly higher in serous carcinomas (63.8%, 102/160) than in either borderline serous tumors (32.3%, 20/62) or benign serous tumors (11.3%, 6/53) (P < 0.01, respectively). This evidence concerns the gene NQO1 and serous adenocarcinoma.