Abstract
The incidence of dermatologic infections in patients receiving checkpoint inhibitors (CPIs) has not been systematically described. Identify the incidence of dermatologic infections in patients who received CPIs. Retrospective review of dermatologic infections in patients who received CPIs between 2005 and 2020 and were evaluated by dermatologists at Memorial Sloan Kettering Cancer Center. Of 2061 patients in the study, 1292 were actively receiving CPIs (≤ 90days since the last dose) and 769 had previously been on CPIs (> 90days since the last dose). The dermatologic infection rate was significantly higher in patients with active CPI treatment (17.5%) than in patients not actively being treated (8.2%; P<.0001). In patients on CPIs, 82 (36.2%), 78 (34.5%), and 48 (21.2%) had bacterial, fungal, and viral infections, respectively, and 18 (8.0%) had polymicrobial infections. Anti-cytotoxic T-lymphocyte-associated antigen-4 monotherapy was associated with the highest risk of infection (hazard ratio, 2.93; 95% confidence interval, 1.87 to 4.60; P<.001). Retrospective design and sample limited to patients referred to dermatology. Patients actively receiving CPIs are more susceptible to dermatologic infections, with anti-cytotoxic T-lymphocyte-associated antigen-4 monotherapy carrying the highest risk, suggesting that the index of suspicion for infections should be increased in these patients to minimize morbidity and optimize care.
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