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Ann Oncol. 2010 Aug;21(8):1712-7. doi: 10.1093/annonc/mdq013. Epub 2010 Feb 10.

Efficacy and safety of ipilimumab monotherapy in patients with pretreated advanced melanoma: a multicenter single-arm phase II study.

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  • 1The Angeles Clinic and Research Institute, Santa Monica, CA, USA.SODay@theangelesclinic.org

Abstract

BACKGROUND:

This phase II study evaluated the safety and activity of ipilimumab, a fully human mAb that blocks cytotoxic T-lymphocyte antigen-4, in patients with advanced melanoma.

PATIENTS AND METHODS:

Patients with previously treated, unresectable stage III/stage IV melanoma received 10 mg/kg ipilimumab every 3 weeks for four cycles (induction) followed by maintenance therapy every 3 months. The primary end point was best overall response rate (BORR) using modified World Health Organization (WHO) criteria. We also carried out an exploratory analysis of proposed immune-related response criteria (irRC).

RESULTS:

BORR was 5.8% with a disease control rate (DCR) of 27% (N = 155). One- and 2-year survival rates (95% confidence interval) were 47.2% (39.5% to 55.1%) and 32.8% (25.4% to 40.5%), respectively, with a median overall survival of 10.2 months (7.6-16.3). Of 43 patients with disease progression by modified WHO criteria, 12 had disease control by irRC (8% of all treated patients), resulting in a total DCR of 35%. Adverse events (AEs) were largely immune related, occurring mainly in the skin and gastrointestinal tract, with 19% grade 3 and 3.2% grade 4. Immune-related AEs were manageable and generally reversible with corticosteroids.

CONCLUSION:

Ipilimumab demonstrated clinical activity with encouraging long-term survival in a previously treated advanced melanoma population.

PMID:
20147741
[PubMed - indexed for MEDLINE]
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