Journal
EUROPEAN JOURNAL OF CANCER
Volume 119, Issue -, Pages 1-10Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ejca.2019.07.001
Keywords
Ipilimumab; Adjuvant therapy; Phase III trial; Melanoma; Stage III; Long-term results
Categories
Funding
- Bristol-Myers Squibb
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Background: Since 2015, adjuvant therapy with ipilimumab is an approved treatment for stage III melanoma based on a significantly prolonged recurrence-free survival (RFS). At a median follow-up of 5.3 years, RFS, distant metastasis-free survival (DMFS) and overall survival (OS) were each significantly prolonged in the ipilimumab group compared with the placebo group, despite a 53.3% (ipilimumab) versus 4.6% (placebo) treatment discontinuation rate due to adverse events. We present now long-term follow-up results of this European Organisation for Research and Treatment of Cancer 18071 trial. Patients, methods and results: A total of 99 sites randomised 951 patients with stage III cutaneous melanoma (excluding lymph node metastasis <= 1 mm or in-transit metastasis) with adequate resection of lymph nodes to receive intravenous infusions of ipilimumab 10 mg/kg or placebo, every 3 weeks for 4 doses, then every 3 months for up to 3 years. The RFS, DMFS and OS, as reported by the local investigators, were assessed by the intention-to-treat analysis. Among 431 patients randomised at 63 sites and who were still alive at the analysis reported in 2016, recent follow-up information could be obtained for 264 patients. The median OS follow-up was 6.9 years. The RFS (hazard ratio [HR] 0.75, 95% confidence interval 0.63-0.88; P < 0.001), DMFS (HR 0.76, 0.64-0.90; P = 0.002) and OS (HR 0.73, 0.60-0.89; P = 0.002) benefit observed in the ipilimumab group was durable with an 8.7% absolute difference at 7 years for OS. The benefit was consistent across subgroups. Conclusions: Adjuvant therapy with ipilimumab prolongs RFS, DMFS and OS significantly. The benefit is sustained long term and consistent across subgroups. (C) 2019 Elsevier Ltd. All rights reserved.
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