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Kaplan‐Meier analysis of progression‐free survival‐2 (PFS2) in the intent‐to‐treat population. PFS2 was defined as the time from randomization to objective tumor progression on next‐line treatment (including subsequent anti–PD‐[L]1 therapy) or death from any cause, whichever occurred first.19 HR, hazard ratio; NR, not reached; PD‐(L)1, programmed death 1 or programmed death ligand 1
