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Journal of Clinical Oncology, Vol 24, No 12 (April 20), 2006: pp. 1852-1859 © 2006 American Society of Clinical Oncology. DOI: 10.1200/JCO.2005.04.2838 Assessment of Tumor Necrosis Factor Alpha Blockade As an Intervention to Improve Tolerability of Dose-Intensive Chemotherapy in Cancer Patients
From the Division of Hematology/Oncology, Department of Internal Medicine and Center for Biostatistics, The Ohio State University College of Medicine and Public Health; The Ohio State University Comprehensive Cancer Center, Arthur G. James Cancer Hospital & Richard J. Solove Research Institute, Ohio State University, Columbus, OH; and The University of Texas Health Science Center at San Antonio, San Antonio, TX Address reprint requests to Miguel A. Villalona-Calero, MD, The Ohio State University Comprehensive Cancer Center, Arthur G. James Cancer Hospital, Ohio State University, B406 Starling-Loving Hall, 320 W 10th Ave, Columbus, OH 43210-1240; e-mail: MigueL.Villalona{at}osumc.edu PURPOSE: Maintaining dose-intensity with chemotherapeutic agents is hindered by a number of adverse effects including asthenia/fatigue. Tumor necrosis factor (TNF) is one of the cytokines responsible for the fatigue and cachexia associated with malignancies. We used etanercept (TNF-decoy receptor) to maintain dose-intensity of weekly docetaxel.
PATIENTS AND METHODS: Initially, 12 patients with advanced malignancies were randomly assigned to either docetaxel 43 mg/m2 weekly alone (cohort A) or the same docetaxel dose plus etanercept 25 mg subcutaneously twice weekly (cohort B). Subsequently, higher doses of docetaxel in combination with etanercept were evaluated. Pharmacokinetics (PKs), nuclear factor-kappa B (NF-
RESULTS: Twenty-nine of 36 intended docetaxel doses during the first cycle were delivered in cohort A, and 35 of 36 doses were delivered in cohort B (P = .055). Three cohort B patients received additional cycles in the absence of disease progression or severe toxicity, whereas no patients from cohort A received additional cycles. Escalation to docetaxel 52 mg/m2 weekly with etanercept resulted in neutropenia, not fatigue, as the limiting adverse effect, and the addition of filgrastim permitted the maintenance of dose-intensity in additional patients. Patients randomly selected to receive etanercept/docetaxel self-reported less fatigue (P < .001), and docetaxel PKs show no relevant influence of etanercept. NF- CONCLUSION: The addition of etanercept is safe and had no impact on docetaxel concentrations. The significant improvement in tolerability and the trend toward preservation of dose-intensity suggests further exploration of TNF blockade as an adjunct to cancer therapies. Authors' disclosures of potential conflicts of interest and author contributions are found at the end of this article.
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Copyright © 2006 by the American Society of Clinical Oncology, Online ISSN: 1527-7755. Print ISSN: 0732-183X
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