Journal
JOURNAL OF THORACIC ONCOLOGY
Volume 13, Issue 12, Pages 1930-1939Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.jtho.2018.08.2035
Keywords
NSCLC; Immunotherapy; Checkpoint inhibitors; Immune-related adverse events; Checkpoint inhibitor pneumonitis
Categories
Funding
- National Heart, Lung and Blood Institute [K08HL132055]
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Checkpoint inhibitor pneumonitis (CIP) is an immune-related adverse event that can occur after initiation of anti-programmed death 1/programmed death ligand 1 immune checkpoint inhibitor (ICI) therapy for the treatment of multiple malignancies, including NSCLC. However, the incidence of CIP has not been previously examined in a population that included both trial-enrolled and non-trial-enrolled patients with advanced NSCLC. Furthermore, risk factors and other clinical characteristics associated with CIP severity are not known. In this study, we retrospectively examined clinical characteristics, incidence, and risk factors for CIP in a cohort of 205 patients with NSCLC, all of whom received anti-programmed death 1/programmed death ligand 1 ICIs. Our results demonstrate a higher incidence of CIP (19%) than previously reported in clinical trials (3%-5%). Our data also suggest that tumor histologic type may be a risk factor for CIP development. We observed a wide range of time to onset of CIP (median 82 days), with high morbidity and mortality associated with higher-grade CIP regardless of degree of immunosuppression. Our data provide new insight into the epidemiology and clinical characteristics of CIP. Further studies are needed to increase CIP pharmacovigilance, improve risk stratification, and refine diagnostic algorithms for the diagnosis and management of this potential life-threatening complication of ICI therapy. (C) 2018 International Association for the Study of Lung Cancer. Published by Elsevier Inc. All rights reserved.
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