BACKGROUND Malignant pleural mesothelioma is a highly aggressive cancer with poor prognosis and few treatment options following progression on platinum-containing chemotherapy. We assessed the safety and efficacy of pembrolizumab (an anti-programmed cell death receptor 1 [PD-1] antibody) in advanced solid tumours expressing programmed cell death ligand 1 (PD-L1) and report here on the interim analysis of the malignant pleural mesothelioma cohort.
METHODS Previously treated patients with PD-L1-positive malignant pleural mesothelioma were enrolled from 13 centres in six countries. Patients received pembrolizumab (10 mg/kg every 2 weeks) for up to 2 years or until confirmed progression or unacceptable toxicity….
FINDINGS As of June 20, 2016, 25 patients received pembrolizumab. 16 (64%) patients reported a treatment-related adverse event; the most common adverse event were fatigue (six [24%]), nausea (six [24%]), and arthralgia (five [20%])….
INTERPRETATION Pembrolizumab appears to be well tolerated and might confer anti-tumour activity in patients with PD-L1-positive malignant pleural mesothelioma. Response durability and efficacy in this patient population warrants further investigation.
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