PMID- 27467964 OWN - NLM STAT- PubMed-not-MEDLINE DCOM- 20160729 LR - 20240210 IS - 2162-4011 (Print) IS - 2162-402X (Electronic) IS - 2162-4011 (Linking) VI - 5 IP - 5 DP - 2016 May TI - Clinical activity and safety of Pembrolizumab in Ipilimumab pre-treated patients with uveal melanoma. PG - e1143997 LID - 10.1080/2162402X.2016.1143997 [doi] LID - e1143997 AB - BACKGROUND: Untreated metastatic uveal melanoma (UM) carries a grave prognosis. Unlike cutaneous melanoma (CM), there are no established treatments known to significantly improve outcomes for a meaningful proportion of patients. Inhibition of the PD1-PDL1 axis has shown promise in the management of CM and we here report a two center experience of UM patients receiving pembrolizumab. METHODS: To assess the efficacy and safety of pembrolizumab, we retrospectively analyzed outcome data of 25 consecutive UM patients participating in the MK3475 expanded access program (EAP) who received pembrolizumab at 2 mg/kg 3 weekly. Tumor assessment was evaluated using RECIST 1.1 and immune-related Response Criteria (irRC) by CT scanning. Toxicity was recorded utilizing Common Terminology Criteria for Adverse Events ("CTCAE") v4.03. RESULTS: Twenty-five patients were identified receiving a median of six cycles of treatment. Two patients achieved a partial response and six patients stable disease. After a median follow-up of 225 d median progression free survival (PFS) was 91 d and overall survival (OS) was not reached. There was a significant trend for improved outcomes in patients with extrahepatic disease progression as opposed to liver only progression at the outset. Five patients experienced grade 3 or 4 adverse events (AEs); there were no treatment related deaths. CONCLUSIONS: Pembrolizumab 2mg/kg q3w is a safe option in UM patients. Disease control rates, particularly in the subgroup of patients without progressive liver disease at the outset are promising; these results merit further investigation in clinical trials possibly incorporating liver targeted treatment modalities. FAU - Karydis, Ioannis AU - Karydis I AD - Cancer Sciences Academic Unit, University of Southampton , Southampton, United Kingdom. FAU - Chan, Pui Ying AU - Chan PY AD - Department of Medical Oncology, St Bartholomew's Hospital , London. FAU - Wheater, Matthew AU - Wheater M AD - Medical Oncology, University Hospital Southampton , Southampton, United Kingdom. FAU - Arriola, Edurne AU - Arriola E AD - Medical Oncology, University Hospital Southampton , Southampton, United Kingdom. FAU - Szlosarek, Peter W AU - Szlosarek PW AD - Department of Medical Oncology, St Bartholomew's Hospital, London; Barts Cancer Institute, Queen Mary University of London, London. FAU - Ottensmeier, Christian H AU - Ottensmeier CH AD - Cancer Sciences Academic Unit, University of Southampton , Southampton, United Kingdom. LA - eng GR - 18892/CRUK_/Cancer Research UK/United Kingdom GR - 15951/CRUK_/Cancer Research UK/United Kingdom GR - 22795/CRUK_/Cancer Research UK/United Kingdom GR - 18158/CRUK_/Cancer Research UK/United Kingdom GR - 12135/CRUK_/Cancer Research UK/United Kingdom GR - 18161/CRUK_/Cancer Research UK/United Kingdom GR - 20613/CRUK_/Cancer Research UK/United Kingdom PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20160218 PL - United States TA - Oncoimmunology JT - Oncoimmunology JID - 101570526 PMC - PMC4910726 OTO - NOTNLM OT - Anti-PD-1 OT - Pembrolizumab OT - immuno-oncology OT - metastases OT - uveal melanoma EDAT- 2016/07/29 06:00 MHDA- 2016/07/29 06:01 PMCR- 2016/02/18 CRDT- 2016/07/29 06:00 PHST- 2015/10/02 00:00 [received] PHST- 2016/01/12 00:00 [revised] PHST- 2016/01/14 00:00 [accepted] PHST- 2016/07/29 06:00 [entrez] PHST- 2016/07/29 06:00 [pubmed] PHST- 2016/07/29 06:01 [medline] PHST- 2016/02/18 00:00 [pmc-release] AID - 1143997 [pii] AID - 10.1080/2162402X.2016.1143997 [doi] PST - epublish SO - Oncoimmunology. 2016 Feb 18;5(5):e1143997. doi: 10.1080/2162402X.2016.1143997. eCollection 2016 May.