When restricted to studies about the specific histological type of serous carcinoma, high ALDH expression was significantly associated with poor OS (HR, 1.33; 95% CI, 1.10-1.61; I2=0%) and DFS (HR, 1.83; 95% CI, 1.46-2.28; I2=0%). This evidence concerns the gene LDHA and serous adenocarcinoma.