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Best percentage change in target lesions from baseline as assessed by the IRC, according to PD-L1 expression level. aBlack bars indicate level of PD-L1 expression (%). Abbreviations: BOR, best overall response; IRC, independent review committee; NE, not evaluable; PD, progressive disease; PD-L1, programmed cell death 1 ligand 1; PR, partial response; SD, stable disease.
