• Pain Med · Nov 2016

    Randomized Controlled Trial

    Pregabalin Improves Pain Scores in Patients with Fibromyalgia Irrespective of Comorbid Osteoarthritis.

    • Charles E Argoff, Birol Emir, Ed Whalen, Marie Ortiz, Lynne Pauer, and Andrew Clair.
    • Albany Medical Center, Albany, New York pargoff@optonline.net.
    • Pain Med. 2016 Nov 1; 17 (11): 2100-2108.

    ObjectiveFibromyalgia (FM) is a chronic pain disorder with patients frequently suffering from comorbid conditions, including osteoarthritis (OA). Data on how FM patients with comorbid OA respond to recommended therapies (such as pregabalin) could help their treatment.DesignThis was a pooled exploratory analysis of three randomized placebo-controlled clinical trials of pregabalin in FM patients to assess the impact of comorbid OA on the response to pregabalin.MethodsPatients were divided into those with and without comorbid OA. Difference in change in least squares (LS) mean pain score at endpoint (assessed by 0-10 numeric rating scale, controlled for baseline pain score) with pregabalin (300 mg/day and 450 mg/day) vs placebo was assessed. Changes in Patient Global Impression of Change (PGIC) responders and Fibromyalgia Impact Questionnaire (FIQ) total score were also assessed.ResultsThere were 1665 patients in the analysis set (558, placebo; 552, pregabalin 300 mg/day; 555, pregabalin 450 mg/day), including 296 with comorbid OA. Pregabalin 450 mg/day significantly improved the LS mean (95% confidence interval) difference in pain score vs placebo in patients with (0.99 [0.44, 1.55], P < 0.001), and without (0.64 [0.39, 0.89], P < 0.001) OA. Improvements with pregabalin 300 mg/day with (0.31 [-0.25, 0.86], P = 0.276) and without (0.51 [0.25, 0.76], P < 0.001) OA were not consistently significant. Improvements in PGIC and FIQ total score were observed in patients with and without comorbid OA.ConclusionsFM patients with or without comorbid OA respond to treatment with pregabalin 450mg/day with significant improvements in pain intensity scores. These data could provide guidance to healthcare professionals treating these patients.© 2016 American Academy of Pain Medicine. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.

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