Clinical Trial
Journal Article
Research Support, Non-U.S. Gov't
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An investigator-initiated open-label clinical trial of vismodegib as a neoadjuvant to surgery for high-risk basal cell carcinoma.

BACKGROUND: Vismodegib is an oral hedgehog-pathway inhibitor approved for advanced basal cell carcinoma (BCC). Although most BCCs are amenable to surgery, excision of large tumors in aesthetically sensitive sites may compromise function or cosmesis.

OBJECTIVE: We sought to evaluate the reduction in BCC surgical defect area after 3 to 6 months of neoadjuvant vismodegib.

METHODS: This was an open-label, single-arm intervention trial with a primary outcome of change in target-tumor surgical defect area pre- and post-vismodegib (150 mg/d). Secondary outcomes were change in tumor area and tolerability.

RESULTS: Eleven of 15 enrolled patients, aged 39 to 100 years, completed the trial. Thirteen target tumors were excised after a mean of 4±2 months of vismodegib. In all, 29% (4 of 14 patients) could not complete more than 3 months because of vismodegib-related side effects. The mean baseline target-tumor diameter was 3.2 cm, and 10 of 13 tumors occurred on the face. Overall, vismodegib reduced the surgical defect area by 27% (95% confidence interval -45.7% to -7.9%; P=.006) from baseline. Vismodegib was not effective in patients who received less than 3 months. Over a mean follow-up of 11.5 (range 4-21) months for all tumors, only 1 tumor recurred at 17 months post-Mohs micrographic surgery.

LIMITATIONS: Short follow-up time and no placebo control are limitations.

CONCLUSION: Neoadjuvant vismodegib appears to reduce surgical defect area when taken for 3 months or longer for nonrecurrent BCCs in functionally sensitive locations. Further studies with larger sample sizes and long-term follow-up are warranted.

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