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Τετάρτη 18 Ιουλίου 2018

Emerging Nonsurgical Therapies for Locally Advanced and Metastatic Nonmelanoma Skin Cancer

BACKGROUND Locally advanced and metastatic nonmelanoma skin cancer (NMSC) not amenable to surgical resection requires a different approach to therapy. OBJECTIVE To review the efficacy and adverse effects of emerging treatment options for locally advanced and metastatic NMSC. MATERIALS AND METHODS A comprehensive search on PubMed was conducted to identify relevant literature investigating the role of program cell death 1 (PD-1) inhibitor, cytotoxic T-lymphocyte–associated antigen 4 (CTLA-4) inhibitor, epidermal growth factor receptor (EGFR) inhibitor, and Hedgehog pathway inhibitors in the treatment of NMSC. RESULTS PD-1 inhibitor and CTLA-4 inhibitor have shown promising efficacy with tolerable side-effect profiles in the treatment of NMSC, although the number of cases reported is limited. Currently, 3 larger-scale clinical trials are investigating PD-1 inhibitor therapy for NMSC. Similarly, EGFR inhibitor demonstrated marginal success in unresectable cutaneous squamous cell carcinomas. Hedgehog pathway inhibitors were approved by the US FDA for treatment of locally advanced and metastatic basal cell carcinomas and have shown favorable efficacy. Common adverse effects included muscle spasm, alopecia, and dysgeusia. CONCLUSION Systemic therapies including PD-1 inhibitors and CTLA-4 inhibitors have demonstrated early promising results for difficult-to-treat NMSC. Future studies are necessary to optimize treatment outcome. Address correspondence and reprint requests to: Michael R. Migden, MD, Departments of Dermatology and Head and Neck Surgery, The University of Texas MD Anderson Cancer Center, 1400 Pressler Street, 1452, Houston, TX 77030, or e-mail: mrmigden@mdanderson.org M.R. Migden has participated on advisory boards and received honoraria from Genentech, Inc.,; Novartis Pharmaceuticals Corporation; Eli Lilly and Company; and Sun Pharmaceutical Industries. © 2018 by the American Society for Dermatologic Surgery, Inc. Published by Wolters Kluwer Health, Inc. All rights reserved.

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