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Kaplan-Meier curve of PFS or OS of patients in the nivolumab group. PFS of patients stratified by (A) age, (B) LDH, and (C) ANC. (D) OS of patients stratified by dNLR. PFS, progression-free survival; OS, overall survival; LDH, lactate dehydrogenase; ANC, absolute neutrophil count.
