
Keywords: TS، تیمیدیلات سنتاز; 5-FU, 5-fluorouracil; CRC, colorectal cancer; TS, thymidylate synthase; TSER, thymidylate synthase enhancer region; MTHFR, methylenetetrahydrofolate reductase; RFC1, reduced folate carrier 1; OS, overall survival; RFS, relapse-free survival; HR, hazard ra