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Published on: April 22, 2019
Vismodegib induces significant clinical response in locally advanced trichoblastic carcinoma
P Lepesant1, M Crinquette2, S Alkeraye1
1Department of Dermatology, CHRU, Lille, France.
Abstract:
Patients with advanced basal cell carcinoma due to local extension or metastatic disease were previously at a therapeutic impasse. Targeted inhibition of the sonic hedgehog pathway by vismodegib represents a new therapeutic strategy. Adnexal carcinomas are rare malignant skin tumours derived from epithelial annexes. Conventional treatment of adnexal tumours is based on surgical excision. Although the radiosensitivity of adnexal carcinomas has not been established, radiotherapy could be offered alone or in combination in locally advanced or inoperable disease. Chemotherapy represents a therapeutic option in the treatment of metastatic adnexal tumours. Currently there is no effective treatment for these tumours when they become metastatic or unresectable, and treatment is palliative. Sunitinib represents a new therapeutic strategy, with efficiency described in the literature for a small number of patients. However, its efficacy is partial, and its tolerance is not always good. We report a patient with trichoblastic carcinoma, initially diagnosed as basal cell carcinoma, treated effectively with vismodegib. The remarkable response we have observed in this patient suggests an encouraging therapeutic role of vismodegib in trichoblastic carcinoma that should be evaluated in a carefully designed trial.
Insights
Vismodegib, a sonic hedgehog pathway inhibitor, shows promise for treating advanced trichoblastic carcinoma, a rare skin cancer. This targeted therapy offers a new option for patients with unresectable or metastatic disease.
Area of Science:
- Dermatology
- Oncology
- Molecular Biology
Background:
- Advanced basal cell carcinoma and adnexal carcinomas pose significant therapeutic challenges, often lacking effective treatments for metastatic or unresectable cases.
- Conventional treatments like surgery, radiotherapy, and chemotherapy have limitations in efficacy and tolerance for advanced or metastatic skin cancers.
- Targeted therapies, such as sonic hedgehog pathway inhibitors, represent a novel strategy for previously untreatable malignancies.
Observation:
- A patient initially diagnosed with basal cell carcinoma presented with trichoblastic carcinoma.
- This patient received treatment with vismodegib, a targeted inhibitor of the sonic hedgehog pathway.
- A remarkable and effective response was observed in the patient following vismodegib treatment.
Findings:
- Vismodegib demonstrated significant efficacy in a patient with trichoblastic carcinoma.
- The observed response suggests vismodegib may be a valuable therapeutic agent for this rare skin malignancy.
- This case highlights the potential of targeted therapy in managing advanced adnexal carcinomas.
Implications:
- Vismodegib shows encouraging therapeutic potential for trichoblastic carcinoma, warranting further investigation.
- Clinical trials are needed to rigorously evaluate the efficacy and safety of vismodegib in trichoblastic carcinoma.
- Targeted inhibition of the sonic hedgehog pathway could offer new treatment avenues for rare and advanced skin cancers.
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