BACKGROUND: PERLA (NCT04581824) compared efficacy and safety of dostarlimab (DCT) or pembrolizumab (PCT) plus chemotherapy as first-line treatment for metastatic non-small cell lung cancer. Here, we report patient-reported outcomes (PROs; exploratory analysis) from PERLA. METHODS: Patients were randomized 1:1 to receive DCT or PCT every 3 weeks (Q3W) for
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