CEACAM5 and gastric cancer: The meta-analysis of these multivariate-adjusted HRs showed that the CEA+ gastric cancer patients suffered poorer prognosis than the CEA- patients (for OS [38,39,40,24,41,13,25,42,20,43,21,44,45,46,47,37,48,49,50], HR 1.631, 95% CI 1.462–1.820, n = 17; for DSS [29,24,15,59], HR 1.900, 95% CI 1.441–2.505, n = 5; for DFS [37,49], HR 2.579, 95% CI 1.935–3.436, n = 2).