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Combined Nivolumab and Ipilimumab or Monotherapy in Untreated Melanoma J. Larkin, V. Chiarion-Sileni, R. Gonzalez, J.J. Grob, C.L. Cowey, C.D. Lao, D. Schadendorf, R. Dummer, M. Smylie, P. Rutkowski, P.F. Ferrucci, A. Hill, J. Wagstaff, M.S. Carlino, J.B. Haanen, M. Maio, I. Marquez-Rodas NEJM, july 2, 2015 2015-08-26 R3. 박은지/ Prof. 맹치훈 Introduction Considerable progress in the treatment of metastatic melanoma has been made in the past 5 years, with the approval of immune checkpoint– blocking antibodies and, in parallel, agents targeting aberrant signaling in the 40 to 50% of melanomas with BRAF mutations Ipilimumab Anti–cytotoxic T-lymphocyte– associated antigen 4 (CTLA-4) antibody - Up-regulate antitumor immunity - Improvement in overall survival - Responses : 10% ~ 15% of patients - - Introduction Nivolumab & pembrolizumab Two anti–programmed death 1 (PD-1) antibodies Approved by the FDA in 2014 After progression during ipilimumab treatment In patients with BRAF-mutated melanoma after progression during treatment with a BRAF inhibitor - Objective responses : 30 ~ 40% of patients - Nivolumab + ipilimumab vs ipilimumab - Objective response rates : 61% vs 11% - Complete responses : 22% vs 0% - Introduction ☞ To confirm and extend these findings, we report one of the coprimary end points (progressionfree survival) of a randomized, double-blind, ulticenter, phase 3 trial that was conducted to evaluate the safety and efficacy of nivolumab alone or nivolumab combined with ipilimumab in comparison with ipilimumab alone in patients with previously untreated metastatic melanoma Methods (1) Assessments Tumor response : RECIST at 12 weeks after randomization, then every 6 weeks for 49 weeks, and then every 12 weeks until progression or treatment discontinuation, whichever occurred later Progression-free survival : The time between the date of randomization and the date of documented progression or death, whichever occurred first Primary end point : Progression-free survival and overall survival Secondary end points : Objective response rate Tumor PD-L1 expression as a predictive biomarker for efficacy outcomes Safety Result (1) 2013.07~2014.03 Total 1293 In 137 centers Result (2) Median PFS Nivolumab Nivolumab Ipilimumab Ipilimumab 6.9 months 11.5 2.9 Result (2) Median PFS Nivolumab Nivolumab Ipilimumab Ipilimumab 14 months 14 3.9 Result (2) Median PFS Nivolumab Nivolumab Ipilimumab Ipilimumab 5.9 months 11.2 2.8 Result (3) Result (4) - 34.5 % - 61.9 % - 5.9 % Result (4) Conclusion Among patients with previously untreated advanced melanoma, we found longer progression-free survival and higher rates of objective response with nivolumab alone and with the combination of nivolumab and ipilimumab than with ipilimumab alone. Thank you ! T cell Priming and Activation: Control of T cell activation The method of “Ipilimumab” Disinhibited response Activated Inhibited IV. Immunostat blockade: Anti-PD-L1 and PD-1 PD-L1 (on cancer cells) - distal immune modulator - expressed broadly in multiple tissues including T&B cells, DCs, macrophage) - expressed in 20-50% of human cancer PD-1 (on T cells) - binds to PD-L1/PD-L2 N Engl J Med 2012; 366:2517-2519 Anti-PD-1 Anti-PD-L1 Ipilimumab BMS-936558