The genomic alteration of CTNNB1 mutation correlated with the favorable therapeutic efficacy of nivolumab monotherapy (PFS, P=0.022), contrary to TP53 mutation (PFS, P=0.063) which demonstrated unfavorable outcomes. CD274(PD-L1) mRNA expression was significantly associated with a high drug response following nivolumab monotherapy (objective response rate, P=0.047) and oncologic outcomes (PFS, P=0.021).