Chronic immune-related adverse events (irAEs) associated with anti-programmed cell death-1 (PD-1) therapy for melanoma were more common than previously thought in a retrospective multicenter study.
As reported in JAMA Oncology, Dr. Johnson and colleagues analyzed data on 387 melanoma patients treated at eight academic medical centers between 2015-2020. The median age was 63, 61% were men, and all received adjuvant anti-PD-1 for stage III-IV melanomas.
Sixty-nine percent of patients had any acute irAE, defined as arising during anti-PD-1 treatment, including 19.5% with grades 3-5 events. One patient had neurotoxicity and one had fatal myocarditis.
Chronic irAEs – those that persisted beyond 12 weeks after anti-PD-1 discontinuation – developed in 43.2% of patients; most (96.4%) were grade 1 or 2 and only 14% had resolved by the last available follow-up.
Source: Medscape