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RASopathic skin eruptions during vemurafenib therapy.
Jeannine D Rinderknecht1, Simone M Goldinger, Sima Rozati
1Department of Dermatology, University Hospital of Zurich, Zurich, Switzerland.
Plos One
|March 22, 2013
Summary
Vemurafenib treatment for advanced melanoma frequently causes unique skin side effects, including photosensitivity and various epidermal and adnexal changes. These reactions require careful dermatological management and sun protection.
Area of Science:
- Dermatology
- Oncology
- Pharmacology
Background:
- Vemurafenib is a targeted therapy for BRAF V600 mutant melanoma.
- Cutaneous adverse events are common with Vemurafenib treatment.
- Understanding these skin reactions is crucial for patient management.
Purpose of the Study:
- To investigate the clinical and histological features of cutaneous side effects associated with Vemurafenib.
- To characterize the spectrum of skin reactions in patients treated with Vemurafenib.
Main Methods:
- A single-center observational study of patients treated with Vemurafenib (960 mg b.i.d.).
- Prospective documentation and classification of all skin reactions.
- Reactions categorized into phototoxic, inflammatory, hair/nail changes, keratinocytic, and melanocytic disorders.
Main Results:
- 93% of patients experienced cutaneous side effects.
- Common reactions included photosensitivity, rash, pruritus, folliculitis, hair thinning, and nail changes.
- Keratosis pilaris, acanthopapilloma, keratoacanthoma, and squamous cell carcinoma were observed; one patient developed a second melanoma.
Conclusions:
- Vemurafenib induces a distinct profile of cutaneous side effects affecting the epidermis and adnexa.
- These reactions can mimic manifestations of RASopathies and should be differentiated from allergic reactions.
- Regular dermatological surveillance and strict photoprotection are essential for patients on Vemurafenib.
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