• Markus V Heppt, Theresa Steeb, Justin Gabriel Schlager, Stefanie Rosumeck, Corinna Dressler, Thomas Ruzicka, Alexander Nast, and Carola Berking.
• Department of Dermatology and Allergy, University Hospital, LMU Munich, Frauenlobstr. 9-11, 80337 Munich, Germany.
• Cancer Treat. Rev. 2017 Nov 1; 60: 44-52.

BackgroundThe use of immune checkpoint blockade (ICB) for uveal melanoma (UM) is little established. The aim of this review was to provide a comprehensive overview on the efficacy, safety, and tolerability of ICB in patients with UM.MethodsWe performed a systematic literature research covering MEDLINE, Embase and CENTRAL. Abstracts of pertinent conferences and trial registers were handsearched for relevant studies.ResultsOut of 1327 records initially identified, 12 eligible studies were included in the qualitative synthesis. They comprised 7 expanded access or named patient programs (n=162), 4 phase II trials (n=171), and 1 phase Ib trial (sample size unknown), while no randomized controlled trial was found. Ipilimumab monotherapy was assessed at 3mg/kg in 5 trials (n=186) with a response rate of 0 to 5%. Two reports investigated ipilimumab at 10mg/kg (n=45) with radiological responses observed in 0 to 6.5%. The median progression-free survival (PFS) was below 3months and the median overall survival was 5.2-9.8months for ipilimumab monotherapy. Severe immune-related adverse events occurred at a frequency comparable to cutaneous melanoma (6 to 36%). Two studies investigated pembrolizumab (2mg/kg) and nivolumab (3mg/kg) with overall response rates of 30% and 6%, respectively. Data on combined ipilimumab and programmed cell death protein 1 inhibition were available from one expanded access program, but no response was observed with a median PFS of 2.9months.ConclusionsUM is little responsive to ipilimumab regardless of dosage schemes. Sound randomized clinical trials are needed to evaluate the efficacy of combined ICB in patients with UM.Copyright © 2017 Elsevier Ltd. All rights reserved.

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