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Kaplan–Meier survival curves of TTD (A), PFS (B), and OS (C) in the NICT and PCT groups after propensity score matching. Abbreviations: NICT, nivolumab plus ipilimumab with chemotherapy; PCT, pembrolizumab with chemotherapy; mTTD, median time to treatment discontinuation; mPFS, median progression-free survival; mOS, median overall survival; HR, hazard ratio
