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Overall survival in patients with a PD-L1 TPS of ≥50% in patients (A) with and (B) without baseline brain metastases and in patients with a PD-L1 TPS of ≥1% in patients (C) with and (D) without baseline brain metastases. Four patients in the pooled intent-to-treat population had missing overall survival data. CI, confidence interval; HR, hazard ratio; PD-L1, programmed death-ligand 1; TPS, tumor proportion score.
