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Telaprevir-related dermatitis
Jean-Claude Roujeau1, Maja Mockenhaupt, Steven R Tahan
1Department of Dermaology, Université Paris-Est, Créteil, France.
JAMA Dermatology
|April 6, 2013
Summary
Telaprevir treatment for hepatitis C frequently causes eczematous dermatitis. Vigilance is crucial for potential severe reactions like Stevens-Johnson Syndrome (SJS) and Drug Reaction with Eosinophilia and Systemic Symptoms (DRESS).
Area of Science:
- Hepatology
- Dermatology
- Clinical Pharmacology
Background:
- Hepatitis C virus (HCV) infection is a major global health concern.
- Telaprevir, a protease inhibitor, has been used in combination therapy for HCV.
- Skin reactions are a known adverse event associated with antiviral therapies.
Purpose of the Study:
- To determine the incidence, type, and severity of skin reactions associated with telaprevir.
- To characterize the clinical presentation of telaprevir-induced dermatitis.
- To assess the risk of severe cutaneous adverse events (SCARs) such as Stevens-Johnson Syndrome (SJS) and Drug Reaction with Eosinophilia and Systemic Symptoms (DRESS).
Main Methods:
- A review of skin eruptions reported as moderate or severe in telaprevir clinical trials (Phase 1-3).
- Assessment by three blinded dermatologists using clinical summaries, photographs, and biopsy results.
- Analysis of data from telaprevir combination therapy trials for hepatitis C.
Main Results:
- Skin eruptions occurred in 56% of telaprevir-treated patients versus 34% in the control group (pegylated interferon and ribavirin alone).
- Severe skin reactions were reported in 3.7% of telaprevir patients compared to 0.4% in the control group.
- The most common reaction was pruritic eczematous dermatitis (over 90% of cases), distinct from typical drug eruptions. Suspected cases of SJS and DRESS were identified.
Conclusions:
- A majority of patients treated with telaprevir develop a characteristic eczematous dermatitis.
- The timing and appearance of this dermatitis differ from common drug reactions.
- There is an increased risk for severe reactions like DRESS and SJS, necessitating careful monitoring of telaprevir-treated patients.
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