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Metronomic antiangiogenic therapy with capecitabine and celecoxib in advanced tumor patients--results of a phase II study.

Steinbild S, Arends J, Medinger M, Häring B, Frost A, Drevs J, Unger C, Strecker R, Hennig J, Mross K

Tumor Biology Center at the Albert Ludwigs University Freiburg and MR Development and Application Center of the University Hospital, Freiburg, Germany.

BACKGROUND: Combined therapy of continuous low dose capecitabine and high dose celecoxib targeting angiogenesis was used in a phase II trial to treat advanced cancer patients. Dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) was used to monitor antiangiogenic effects. MATERIAL AND METHODS: 37 Patients (21 men, 16 women), mean age 60 years, with advanced and progressive cancer of various tumor types were included. Therapy consisted of 2 x 500 mg oral capecitabine/ day and 2 x 400 mg oral celecoxib/day continuously until progression of disease. To monitor antiangiogenic effects, DCE-MRI measurements were performed at baseline, after 1 month, and after 3 months of therapy. Tumor assessment was performed according to RECIST criteria, toxicity was evaluated according to the CTC version 2.0 catalogue. RESULTS: Therapy was well tolerated without grade 3 and 4 toxicities. The mean number of treatment cycles was 4 (range: 1-15+). Disease stabilization after 3 cycles was seen in 11 patients. 6 patients were stable over long periods. The mean number of treatment cycles in this group was 10 (range: 7-15+). DCE-MRI demonstrated a reduction of tumor vessel permeability and blood flow in patients who reached stable disease or some minor regression. CONCLUSION: Continuous dosing of the combination of capecitabine and celecoxib was well tolerated, produced antiangiogenic effects, and has antitumor activity. Patients with rapid progression did not benefit.

Published 7 December 2007 in Onkologie, 30(12): 629-35.
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