A randomised, phase II study of intetumumab, an anti-α v-integrin mAb, alone and with dacarbazine in stage IV melanoma

Paul Lorigan, S. O'Day, A. Pavlick, C. Loquai, D. Lawson, R. Gutzmer, J. Richards, D. Schadendorf, J. A. Thompson, R. Gonzalez, U. Trefzer, P. Mohr, D. Chao, B. Zhong, C. J. De Boer, C. Uhlar, D. Marshall, M. E. Gore, Z. Lang, W. HaitP. Ho

    Research output: Contribution to journalArticlepeer-review

    Abstract

    Background: αv integrins are involved in angiogenesis and melanoma tumourigenesis. Intetumumab (CNTO 95) is a fully human anti-αv-integrin monoclonal antibody.Methods:In a multicentre, randomised, phase II study, stage IV melanoma patients were randomised 1: 1: 1: 1 to 1000 mg m2 dacarbazineplacebo (n32), 1000 mg m2 dacarbazine10 mg kg1 intetumumab (n32), 10 mg kg1 intetumumab (n33), or 5 mg kg1 intetumumab (n32) q3w. The primary endpoint was progression-free survival (PFS). Secondary endpoints included overall survival (OS), objective response rate (ORR), adverse events, and pharmacokinetics.Results:No statistically significant differences in efficacy were observed between groups. In the dacarbazineplacebo, dacarbazineintetumumab, 10 mg kg1 intetumumab, and 5 mg kg1 intetumumab groups, median PFS was 1.8, 2.5, 1.4, and 1.4 months; median OS was 8, 11, 15, and 9.8 months; and ORR of completepartial response was 10, 3, 6, and 0%. Nonlinear intetumumab pharmacokinetics and potential intetumumab-dacarbazine interactions were observed. Transient, asymptomatic, nonrecurring, grade 1-2, uveitic reactions that resolved spontaneously or with topical steroids were seen in 22-30% of intetumumab-treated patients. Low-grade infusion-reaction symptoms (headache, fatigue, nausea, vomiting, fever, chills) were observed, as expected, in 16-73% of dacarbazine-treated patients. No intetumumab-related myelosuppression, laboratory/electrocardiogram abnormalities, or deaths occurred. Conclusion: With its favourable safety profile and a nonsignificant trend towards improved OS, intetumumab merits further investigation in advanced melanoma. © 2011 Cancer Research UK All rights reserved.
    Original languageEnglish
    Pages (from-to)346-352
    Number of pages6
    JournalBritish Journal of Cancer
    Volume105
    Issue number3
    DOIs
    Publication statusPublished - 26 Jul 2011

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