Related Experiment Video
Updated: Apr 22, 2026

Studying Chronic Exposure of Mice to Ultraviolet B Radiation
Published on: August 19, 2025
Dermatological approach to vemurafenib skin toxicity: a single centre experience
Paolo Fava1, Elena Marra, Chiara Astrua
1Department of Medical Science, University of Turin, Turin, Italy - paola.savoia@unito.it.
Background:
Targeted therapies have recently changed the approach to advanced melanoma. RAF inhibitors represent the emerging standard of care for metastatic BRAF mutated melanomas. Cutaneous reactions are the most common side effects during vemurafenib treatment, and affect the quality of life. The aim of this study was to provide some practical advices to manage the drug related cutaneous reactions.
Methods:
A cohort of BRAF-mutated metastatic melanoma patients treated at our institution included 20 female and 21 male patients; median age was 56 years (32-87 years). All patients were treated at a dose of 960 mg b.i.d. orally.
Results:
After a median treatment duration of 7 months (range 0.5-25.2), 29/39 patients (74.4%) developed cutaneous toxicities. We identified 22 cases of maculo-papular rash (56%) and 18 of warts (46%); in a total of 10 cases we observed alterations of keratinization (25.6%), while 6 of our patients presented photosensitivity (15 %). Six patients developed keratoacanthomas; no second melanomas were observed.
Conclusions:
Skin involvement during vemurafenib treatment is frequent but in the majority of cases cutaneous side effects are self-limiting and easy to manage. Moreover, sun protection is mandatory in vemurafenib treated patients, and should be started together with BRAF inhibitor in order to minimize the impact of photosensitivity on quality of life.
Insights
Vemurafenib, a BRAF inhibitor for advanced melanoma, frequently causes skin reactions like rash and warts. Most side effects are manageable, but sun protection is crucial to mitigate photosensitivity and maintain quality of life.
Area of Science:
- Oncology
- Dermatology
- Pharmacology
Background:
- Targeted therapies, including RAF inhibitors, are transforming advanced melanoma treatment.
- Vemurafenib is a standard therapy for metastatic BRAF-mutated melanomas.
- Cutaneous reactions are common adverse effects of vemurafenib, impacting patient quality of life.
Purpose of the Study:
- To offer practical management strategies for vemurafenib-induced cutaneous reactions.
- To analyze the incidence and types of skin side effects in patients receiving vemurafenib.
Main Methods:
- A cohort of 39 patients with BRAF-mutated metastatic melanoma was treated with vemurafenib (960 mg twice daily).
- Patient demographics and treatment duration were recorded.
- Cutaneous toxicities were systematically documented.
Main Results:
- 74.4% of patients developed cutaneous toxicities after a median of 7 months.
- Maculo-papular rash (56%) and warts (46%) were the most frequent reactions.
- Other toxicities included keratinization alterations (25.6%), photosensitivity (15%), and keratoacanthomas (6 patients).
Conclusions:
- Vemurafenib-related skin involvement is common but generally manageable and self-limiting.
- Sun protection is essential for vemurafenib-treated patients to minimize photosensitivity.
- Early implementation of sun protection strategies can improve quality of life during BRAF inhibitor therapy.
More Related Videos
11:02The Three-Dimensional Human Skin Reconstruct Model: a Tool to Study Normal Skin and Melanoma Progression
Published on: August 3, 2011
04:12Chemical-Induced Skin Carcinogenesis Model Using Dimethylbenz[a]Anthracene and 12-O-Tetradecanoyl Phorbol-13-Acetate DMBA-TPA
Published on: December 19, 2019
Related Concept Videos
Skin Cancer
Basal Cell Carcinoma (BCC): BCC is the most common type of skin cancer, accounting for about 80% of cases. It typically develops in...
Changes in Skin Color: Clinical Perspectives
Albinism
Albinism is a genetic disorder that affects (completely or partially) the coloring of skin, hair, and eyes. The defect is primarily...
Role of Skin in Vitamin D Synthesis
The solar UV B rays (290-315 nm) are absorbed by the skin, and 7-dehydrocholesterol (provitamin D3) photolyzes it to previtamin D3, which undergoes a rapid transformation to vitamin...
Drug Toxicity: Allergic Reactions
Skin Diseases and Disorders
Gram-positive Staphylococcus spp. and Streptococcus spp. are responsible for many of the most common skin infections. However, many...
Drug toxicity: Idiosyncratic Reactions