, AQP9 (The Affymetrix IDs is valid: 205568_at), and AQP11 (The Affymetrix IDs is valid: 229526_at) mRNA were significantly associated with favorable OS in all gastric cancer patients, HR = 0.82 (0.69–0.97), P=0.023, HR = 0.67 (0.56–0.8), P=8.60E-06 and HR = 0.65 (0.52–0.82), P=0.00024, respectively. This evidence concerns the gene AQP9 and gastric cancer.