Abstract | PURPOSE: METHODS AND MATERIALS: A placebo-controlled, double-blind trial conducted in adults with RI limb plexopathy without cancer recurrence, randomized in 2 arms to PENTOCLO ( pentoxifylline 800 mg, tocopherol 1000 mg, clodronate 1600 mg 5 days per week) or triple placebo. The primary outcome measure after 18 months of treatment was the neurologic Subjective Objective Management Analytic ( SOMA) score evaluating pain, paresthesia, and motor disability. RESULTS: Between 2011 and 2015, 59 patients were included: 1 false inclusion (neoplastic plexopathy), 29 treated with placebo (group P), and 29 treated with the active drugs (group A); 46 patients presented an upper-limb and 12 a lower-limb plexopathy. The mean delay after irradiation was 26 ± 8 years, for patients with neurologic symptoms for 5 ± 5 years. The median global SOMA scores in the P and A groups, respectively, were 9 (range, 6-11) versus 9 (range, 8-11) at M0 and 9 (range, 5-12) versus 10 (range, 6-11) at M18 without any significant difference. Analysis of the secondary outcomes showed that SOMA score subdomains for pain and paresthesia were more affected in group A (not significant). The frequency of adverse events was similar in the 2 groups (81% of patients): slight expected vascular-gastrointestinal symptoms in A, but a large excess of RI complications (arterial stenosis). CONCLUSIONS: This first randomized drug trial in RI plexopathy failed to show a beneficial effect. More studies are needed in patients with less advanced disease and fewer confounding comorbidities and with a more sensitive measure to detect a therapeutic effect.
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Authors | Sylvie E Delanian, Timothee Lenglet, Thierry Maisonobe, Matthieu Resche-Rigon, Pierre-Francois Pradat |
Journal | International journal of radiation oncology, biology, physics
(Int J Radiat Oncol Biol Phys)
Vol. 107
Issue 1
Pg. 154-162
(05 01 2020)
ISSN: 1879-355X [Electronic] United States |
PMID | 31987975
(Publication Type: Journal Article, Randomized Controlled Trial, Research Support, Non-U.S. Gov't)
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Copyright | Copyright © 2020 Elsevier Inc. All rights reserved. |
Chemical References |
- Drug Combinations
- Placebos
- pentoxifylline-tocopherol-clodronate
- Clodronic Acid
- Tocopherols
- Pentoxifylline
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Topics |
- Aged
- Clodronic Acid
(therapeutic use)
- Drug Combinations
- Female
- Humans
- Male
- Middle Aged
- Pentoxifylline
(therapeutic use)
- Peripheral Nerve Injuries
(drug therapy, etiology)
- Placebos
- Radiation Injuries
(drug therapy)
- Tocopherols
(therapeutic use)
- Treatment Outcome
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