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Pentoxifylline and vitamin E treatment for prevention of radiation-induced side-effects in women with breast cancer: A phase two, double-blind, placebo-controlled randomised clinical trial (Ptx-5).

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Author

Summary, in English

BACKGROUND: A previous study has shown that pentoxifylline in combination with vitamin E can reverse radiation-induced fibrosis. The aim of the present study is to investigate if the same drugs could prevent radiation-induced side-effects in women with breast cancer. PATIENTS AND METHODS: A randomised, placebo-controlled, double-blind, parallel group trial was performed. Women with breast cancer were treated for 12months with 400mg pentoxifylline t.i.d. or placebo, in combination with 100mg vitamin E t.i.d., starting 1-3months after the completion of radiotherapy. The primary end-point was passive abduction of the shoulder, and the secondary end-point was difference in arm volumes. The trial is registered on the ISRCTN.org website, number ISRCTN39143623. RESULTS: 83 patients were included in the study; 42 in the pentoxifylline+vitamin E group and 41 in the placebo+vitamin E group. Both treatments were generally well tolerated. Seven patients were withdrawn from the treatment due to disease progression; four in the pentoxifylline group and three in the placebo group. At inclusion, patients had impaired passive abduction of the shoulder. During treatment, both the groups improved significantly. Median improvement from baseline was 3.7 degrees (p=0.0035) on pentoxifylline and was 9.4 degrees (p=0.0041) in the placebo group, but no difference between the groups was detected (p=0.20). Arm volumes increased over time in the placebo group (1.04%), but not on pentoxifylline (0.50%), and differed significantly between the groups (p=0.0172). CONCLUSIONS: The combination of pentoxifylline and vitamin E was safe and may be used for the prevention of some radiation-induced side-effects.

Publishing year

2009

Language

English

Pages

2488-2495

Publication/Series

European Journal of Cancer

Volume

45

Document type

Journal article

Publisher

Elsevier

Topic

  • Cancer and Oncology

Status

Published

Research group

  • Human Movement: health and rehabilitation

ISBN/ISSN/Other

  • ISSN: 1879-0852