• Semin. Arthritis Rheum. · Jun 2020

    Randomized Controlled Trial

    Onset and maintenance of efficacy of subcutaneous tanezumab in patients with moderate to severe osteoarthritis of the knee or hip: A 16-week dose-titration study.

    • Thomas J Schnitzer, Arifulla Khan, Louis Bessette, Isabelle Davignon, Mark T Brown, Glenn Pixton, William R Prucka, Leslie Tive, Lars Viktrup, and Christine R West.
    • Northwestern University Feinberg School of Medicine, 710 N Lake Shore Drive, Room 1020, Chicago, IL 60611, United States. Electronic address: tjs@northwestern.edu.
    • Semin. Arthritis Rheum. 2020 Jun 1; 50 (3): 387-393.

    ObjectiveTo examine the onset and maintenance of efficacy of subcutaneous tanezumab for pain relief and functional improvement in difficult-to-treat patients with moderate-to-severe osteoarthritis (OA) in a 16-week dose-titration study (NCT02697773).MethodsPatients were randomized to placebo (placebo group) or tanezumab 2.5 mg at baseline and week 8 (tanezumab 2.5 mg group), or tanezumab 2.5 mg at baseline and tanezumab 5 mg at week 8 (tanezumab 2.5/5 mg group). Analyses included change from baseline in average daily index joint pain and Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) Pain and Physical Function, and treatment responses (WOMAC Pain improvement criteria and Outcome Measures in Rheumatology-Osteoarthritis Research Society International [OMERACT-OARSI] criteria).ResultsThe 696 patients received placebo (n = 232), tanezumab 2.5 mg (n = 231), or tanezumab 2.5/5 mg (n = 233). Average daily index joint pain was statistically significantly improved within the first week (day 3-5) with tanezumab 2.5 mg compared with placebo. On first post-randomization WOMAC measurement (week 2), both tanezumab groups had statistically significant improvements compared with placebo in WOMAC Pain and Physical Function, and more tanezumab-treated patients achieved treatment response criteria (≥30%, ≥50%, or ≥70% reduction in WOMAC Pain or OMERACT-OARSI response). Efficacy was generally maintained throughout the 16-week treatment period.ConclusionSubcutaneous tanezumab provided statistically significant improvements compared with placebo in average daily index joint pain within the first week and WOMAC Pain and Physical Function (week 2) that were generally maintained throughout the 16-week treatment period. Tanezumab 5 mg provided only modest additional efficacy over tanezumab 2.5 mg.Copyright © 2020 Elsevier Inc. All rights reserved.

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