Abstract

IntroductionLung cancer is one of the most common cancers in the world and it is the leading cause of cancer-related deaths, among men and women, in the United States. In advanced non-small cell lung cancers, immune checkpoint inhibitors such as programmed cell death protein-1 inhibitors (PD-1 inhibitors) have become second-line therapy and have revolutionized the management in selective cases conferring better overall response rates and progression free survival. MethodsWe present a case series and review of literature emphasizing this immune-related adverse events (irAEs) in patients with metastatic non-small cell lung cancer and esophageal cancer who were treated with Nivolumab as a second line therapeutic option. ResultsPD-1 inhibitors such as, Nivolumab and Pembrolizumab, have shown a stable regression of various malignancies, such as metastatic melanoma, renal cell carcinoma and metastatic non-small cell lung cancer. We describe 2 cases of such immune related adverse effects associated with immune check point inhibitors with recovery in one of the patients. Steroid therapy has been the cornerstone for treatment for such immune related adverse effects. Importance has also been laid on the typical radiographic patterns of pneumonitis and interstitial lung disease associated with immunotherapy. ConclusionsWe attempt to raise awareness, discuss early management strategies and hypothesize an association between the incidence and development of these adverse events in cancer patients treated with anti-PD-1 immunotherapeutic agents.

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