Complete remission of advanced, locally invasive basal cell carcinoma with vismodegib

Abstract

We report the case of a 71-year-old woman who developed advanced basal cell carcinoma (BCC) affecting the right eyebrow, invading the orbit. Globe displacement resulted in visual disturbances. Following multidisciplinary assessment, the tumour was deemed technically resectable for excision and right orbital exenteration. The patient however refused ablative surgical treatment; in view of her multiple comorbidities, the tumour was considered unresectable for her. Targeted therapy with vismodegib (Erivedge; Roche Pharmaceuticals) was therefore initiated in accordance with the patient’s desire to avoid disfiguring surgery. After nine 28-day cycles of treatment, the tumour showed dramatic regression both clinically and radiographically. Mapping biopsies taken after 9 months confirmed the absence of any residual tumour, negating the need for ablative surgery. Grade 1 adverse events including muscle cramps, loss of taste, and reduced appetite were reported. Treatment was discontinued at 15 months owing to cumulative toxicity. The patient remains in remission 14 months after cessation of vismodegib. The use of vismodegib for advanced BCC is emerging and a number of reports exist. However, its application is mainly reserved for patients with locally advanced or metastatic disease, patients who are medically unfit for surgery, and cases where primary surgical resection would cause unacceptable disfigurement.