Immuno-related cutaneous adverse events (IRcutAEs) of anti-PD-1/anti-PD-L1 therapy in patients (p) with advanced non-small cell lung cancer (NSCLC): A single-institution prospective study.

Abstract

e20556 Background: Despite the impressive benefits of the immune checkpoint blockade in NSCLC, its use can be hampered by the occurrence of serious adverse events. IRcutAEs are underestimated and poorly described according to data from the clinical trials. We sought to characterize the IRcutAEs and their treatment in p with NSCLC. Methods: Before starting immunotherapy, all NSCLC p were prospectively referred to the Dermatology Department. Periodic monitoring visits were also scheduled for each p, in order to describe the IRcutAEs and their treatments. The study included data from all consecutive NSCLC p treated with immunotherapy in our institution. Results: Since May 2016, 50 p were recruited for the present study. According to clinical characteristics; 18 p had squamous histology, 43 p received treatment as second line or further, and 36 p were treated with nivolumab. During the follow-up period, 15 p (30%) developed IRcutAEs. Lichenoid reactions were the most common AE (9 p, 60%), but some specific conditions were also observed, such as a cutaneous lupus (1 p, 6.6%) or an eruptive pseudoangiomatosis (1 p, 6.6%). Conclusions: IRcutAEs are common during antiPD1-PDL1 therapy. By offering a dermatological follow-up, the diagnosis and management of this type of toxicity can be provided to NSCLC p initiating immunotherapy.