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Kaplan-Meier analysis of the OS of AGC patients who received NCT. Association between the number of positive tumor markers before NCT (A) and after NCT (B) with OS of all patients who received NCT. (C) Association between tumor marker normalization or non-normalization after NCT and the OS of all patients. (D) Association between the tumor marker abnormalization or non-abnormalization after NCT and the OS of all patients. AGC, advanced gastric cancer; NCT, neoadjuvant chemotherapy.
