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Kaplan–Meier curves for PFS of 128 mCRC patients according to the NLR trends before and after 4 cycles chemotherapy. (A) PFS of 128 mCRC patients according to the NLR trends before and after 4 cycles chemotherapy; (B) OS of 128 mCRC patients according to the NLR trends before and after 4 cycles chemotherapy. PFS, progression-free survival; OS, overall survival; mCRC, metastatic colorectal cancer; NLR, neutrophil-to-lymphocyte ratio.
