Univariate analysis showed that the factors related to PD in GC were as follows: CA125 (P < 0.0001), CA199 (P < 0.0001), CA72-4 (P < 0.0001), FLR (P < 0.0001), NLR (P < 0.0001), ALR (P < 0.0001), PLR (P = 0.013), and CEA (P = 0.031), and the differences between the two groups were statistically significant (Table 1). Here, CEACAM5 is linked to gastric cancer.