Journal
JOURNAL OF CLINICAL ONCOLOGY
Volume 21, Issue 8, Pages 1498-1504Publisher
AMER SOC CLINICAL ONCOLOGY
DOI: 10.1200/JCO.2003.09.114
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Purpose: To evaluate the antitumor activity, safety, immune response, and replication of CI-1042 (ONYX-015), an E 1 B 55-kd gene-deleted replication-selective adenovirus, administered intravenously to patients with metastatic colorectal cancer Patients and Methods: Eighteen patients with metastatic colorectal cancer for whom prior chemotherapy failed were enrolled onto an open-label, multicenter, phase II study. CI-1042 was administered intravenously at a dose of 2 x 10(12) viral particles every 2 weeks. Patients were evaluated for tumor response and toxicity; in addition, blood samples were taken for adenovirus DNA and neutralizing antibody analysis. Results: Common toxicities included flu-like symptoms, nausea, and emesis. All 18 patients eventually were removed from study because of progressive disease. Seven patients were assessed as having stable disease after 2 months of treatment, whereas two patients were considered to have stable disease after 4 months. Detectable circulating CI-1042 DNA was identified in 36% of patients 72 hours after last infusion, which is suggestive of ongoing viral replication. Conclusion: In this phase 11 study, intravenous CI-1042 was administered safely to patients with advanced colorectal cancer. Toxicity was manageable, consisting primarily of flu-like symptoms. Stable disease was experienced by seven patients for 1 1 to 18 weeks. (C) 2003 by American Society of Clinical Oncology.
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