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  • Title: Tanezumab reduces osteoarthritic hip pain: results of a randomized, double-blind, placebo-controlled phase III trial.
    Author: Brown MT, Murphy FT, Radin DM, Davignon I, Smith MD, West CR.
    Journal: Arthritis Rheum; 2013 Jul; 65(7):1795-803. PubMed ID: 23553790.
    Abstract:
    OBJECTIVE: To compare the efficacy of tanezumab versus placebo for reducing pain and improving physical function in patients with osteoarthritis (OA) of the hip. METHODS: This was a 32-week, randomized, double-blind, placebo-controlled, phase III trial. Patients with baseline Western Ontario and McMaster Universities OA Index (WOMAC) Pain and Physical Function subscale scores of ≥5 and ≥4, respectively, and patient's global assessment of OA as "fair," "poor," or "very poor" were treated at baseline and weeks 8 and 16. Coprimary efficacy end points were change from baseline to week 16 in WOMAC Pain and Physical Function subscales and patient's global assessment, analyzed using analysis of covariance. Adverse events (AEs) were monitored throughout. RESULTS: Patients (n = 621) were randomized 1:1:1:1 to treatment with intravenous tanezumab 2.5 mg, 5 mg, or 10 mg or placebo. Each tanezumab group showed significant improvement for the 3 coprimary end points versus placebo (P ≤ 0.001 for all). AE incidence ranged from 55% to 58% across tanezumab groups versus 44% for placebo. Safety findings were similar to those previously reported. The tanezumab OA clinical program was temporarily placed on hold because of AEs leading to joint replacement. Total joint replacements were reported in 8 patients: 1 in the 10 mg, 2 in the 5 mg, 2 in the 2.5 mg, and 3 in the placebo group. A total of 9 joints were replaced (8 hips [7 index joints] and 1 shoulder). CONCLUSION: Our findings indicate that tanezumab provides superior pain relief and improvement in physical function and patient's global assessment versus placebo in patients with painful hip OA, and is generally well tolerated.
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