In HSCC (HR = 0.61, p = 0.0047), KIRC (HR = 0.48, p < 0.001), LSCC (HR = 0.67, p = 0.0082), READ (HR = 0.33, p = 0.0054), UCEC (HR = 0.47, p < 0.001), gastric cancer (HR = 057, p < 0.001, n = 875, GEO), and breast cancer (HR = 0.89, p = 0.026, n = 4,929, GEO), the higher the expression of NKCC1, the better the prognosis of the patient. This evidence concerns the gene SLC12A2 and gastric cancer.