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Σάββατο 4 Αυγούστου 2018

Retrospective Chart Review of Cutaneous Adverse Events Associated with Tremelimumab in 17 Patients

Abstract

Background and Objectives

Tremelimumab is a monoclonal human antibody that inhibits cytotoxic T-lymphocyte-associated antigen 4, giving rise to increased T cell activation and interleukin-2 release. While this activation of the immune system provides a mechanism to recognize and destroy cancer cells, it also leads to off-target immune-related adverse events. Ipilimumab is a US Food and Drug Administration-approved anti-cytotoxic T-lymphocyte-associated antigen 4 antibody, which has a high incidence of cutaneous adverse events. While cutaneous adverse events for ipilimumab have been extensively studied, there is a distinct lack of cutaneous adverse event data for tremelimumab.

Methods

We conducted a retrospective chart review of our institution's electronic medical records from January 2000 to March 2018 to characterize cutaneous adverse events induced by tremelimumab. Previous descriptions of tremelimumab cutaneous adverse events are limited to rash and pruritus.

Results

We found 17 patients treated with tremelimumab who had cutaneous adverse events including pruritus (12/17), eczematous dermatitis (8/17), morbilliform rash (5/17), vitiligo (2/17), xerosis (3/17), acneiform rash (2/17), and psoriasiform dermatitis (1/17).

Conclusions

This case series demonstrates that cutaneous adverse events seen in patients taking tremelimumab overlap with those of ipilimumab. While there are some differences between rash characterizations of the two drugs, such as time to onset and clearance, the sample size of this case series is too small to draw any definite conclusions. This study addresses a gap in the descriptive knowledge on tremelimumab cutaneous adverse events and highlights the need for further large cohort prospective studies. Awareness of expected cutaneous toxicities and how best to treat these can help patients continue on immunotherapy regimens without delays or interruptions and give patients the best quality of life while receiving treatment.



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