• Voichita Bar Ad, Gregory Weinstein, Pinaki R Dutta, Arie Dosoretz, Ara Chalian, Stefan Both, and Harry Quon.
• Department of Radiation Oncology, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA. barad@xrt.upenn.edu
• Cancer. 2010 Sep 1;116(17):4206-13.

BackgroundThis retrospective study evaluated the efficacy of gabapentin for the treatment of pain syndromes related to radiation-induced mucositis in patients with head and neck cancers treated with concurrent chemoradiation.MethodsData from 42 patients with head and neck malignancies treated with concurrent chemoradiotherapy using an intensity-modulated radiotherapy technique were analyzed. Gabapentin was initiated in the second week of radiotherapy. Opiates were prescribed in addition to gabapentin as clinically indicated to obtain adequate pain control.ResultsAt a median dose of 2700 mg/day of gabapentin, only 33% and 55% of patients required additional low-dose narcotic medications for pain control during the third and fourth week of treatment, respectively, despite exhibiting a grade 2 or higher mucositis in 71% and 86% of the patients, respectively. Furthermore, during the last weeks of treatment, 71% of the patients required additional low-dose opiates for adequate pain control, despite the presence of grade 2 or higher mucositis in 95% and 100% of patients at Weeks 5 and 6, respectively. Only 1 patient had a treatment-related interruption of >3 days during chemoradiotherapy.ConclusionsGabapentin appears to be promising in reducing the need for high total doses of opioids and avoiding unplanned treatment interruptions for patients with head and neck malignancies treated with concurrent chemoradiotherapy and should be further evaluated prospectively in controlled clinical trials.

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