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Vismodegib for Periocular and Orbital Basal Cell Carcinoma
Vismodegib for Periocular and Orbital Basal Cell Carcinoma JAMA OPHTHALMOLOGY Gill, H. S., Moscato, E. E., Chang, A. S., Soon, S., Silkiss, R. Z. 2013; 131 (12): 1591–94Abstract
Basal cell carcinoma (BCC) represents 90% of malignant eyelid tumors and is locally invasive and destructive, if left untreated.To assess the feasibility of using vismodegib for periocular and orbital BCC based on its efficacy and tolerability.In this prospective observational case series, consecutive patients with periocular or orbital BCC who met criteria for treatment with vismodegib were recruited prospectively during an 8-month period from February through September 2012 from 2 academic hospitals. Seven patients received oral vismodegib, 150 mg daily, until maximum clinical response was achieved, the tumor progressed, or the patient could no longer tolerate adverse effects. Clinical response and adverse effects related to treatment were recorded. The primary endpoint was reduction in lesion size, measured as percentage change in the externally visible dimension.Oral vismodegib.All 7 patients had locally advanced, biopsy-proven, infiltrative BCC that was not amenable to surgical resection or radiation. No patients had metastatic disease at presentation. The mean patient age was 71 years (range, 43-100 years), and 4 patients (57%) had secondary orbital involvement. The mean lesion size was 3.4 cm (range, 1.0-6.0 cm), and all 7 cases (100%) represented recurrent tumors excised previously with controlled margins by frozen section or Mohs micrographic surgery. The mean treatment duration was 11 weeks (range, 4-16 weeks), and the mean duration of follow-up was 7.3 months (range, 5-10 months). Two patients (29%) demonstrated complete clinical regression, 2 (29%) demonstrated greater than 80% partial clinical regression, 2 (29%) demonstrated less than 35% partial clinical regression, and 1 (14%) progressed. Adverse reactions occurred in 6 patients (86%) and included alopecia (29%), dysgeusia (29%), muscle cramps (29%), and anorexia (14%). Two patients (29%) developed new squamous cell carcinomas (well-differentiated, keratoacanthoma type) at uninvolved sites including the eyebrow and forearm.Vismodegib seems to be well-tolerated and effective for treating periocular and orbital BCC in about half of all cases. Patients receiving treatment should be monitored for new squamous cell carcinomas at uninvolved sites.
View details for PubMedID 24136169