Abstract
We assessed the preliminary efficacy and toxicity of intrapleural instillation of nivolumab in patients with large pleural effusion. Patients with metastatic cancers who have a large volume of pleural effusion and required evacuation were eligible. Thoracentesis followed by nivolumab (40 mg, single intrapleural instillation) was performed. The primary endpoint was 3-month recurrence-free survival. A total of 13 patients were enrolled. The study was terminated after stage 1 as no efficacy was observed; 7 patients (54%) had a recurrence of pleural effusion at 3 months. Thirteen (100%) patients had no recurrence, dyspnea, or cough within 1 month, and the median time to recurrence was 1.9 months (95% confidence interval [CI], 1.35-2.5). No adverse events were identified. We concluded that a single intrapleural instillation of the nivolumab at 40 mg was ineffective and well-tolerated in cancer patients with pleural effusion.
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