About: Tanezumab is a research topic. Over the lifetime, 119 publications have been published within this topic receiving 4462 citations. The topic is also known as: PF04383119 & PF-04383119.
TL;DR: Treatment with tanezumab was associated with a reduction in joint pain and improvement in function, with mild and moderate adverse events, among patients with moderate-to-severe osteoarthritis of the knee.
Abstract: Methods We randomly assigned 450 patients with osteoarthritis of the knee to receive tan ezumab (administered at a dose of 10, 25, 50, 100, or 200 µg per kilogram of body weight) or placebo on days 1 and 56. The primary efficacy measures were knee pain while walking and the patient’s global assessment of response to therapy. We also assessed pain, stiffness, and physical function using the Western Ontario and Mc Master Universities Osteoarthritis Index (WOMAC); the rate of response using the criteria of the Outcome Measures for Rheumatology Committee and Osteoarthritis Research Society International Standing Committee for Clinical Trials Response Criteria Initiative (OMERACT–OARSI); and safety. Results When averaged over weeks 1 through 16, the mean reductions from baseline in knee pain while walking ranged from 45 to 62% with various doses of tanezumab, as compared with 22% with placebo (P<0.001). Tanezumab, as compared with placebo, was also associated with significantly greater improvements in the response to ther apy as assessed with the use of the patients’ global assessment measure (mean in creases in score of 29 to 47% with various doses of tanezumab, as compared with 19% with placebo; P≤0.001). The rate of response according to the OMERACT–OARSI criteria ranged from 74 to 93% with tanezumab treatment, as compared with 44% with placebo (P<0.001). The rates of adverse events were 68% and 55% in the tanezumab and placebo groups, respectively. The most common adverse events among tanezumab-treated patients were headache (9% of the patients), upper respiratory tract infection (7%), and paresthesia (7%). Conclusions In this proof-of-concept study, treatment with tanezumab was associated with a reduction in joint pain and improvement in function, with mild and moderate adverse events, among patients with moderate-to-severe osteoarthritis of the knee. (Funded by Rinat Neuroscience; ClinicalTrials.gov number, NCT00394563.)
TL;DR: The Biacore blocking assay that was designed was used to quantify the potency of tanezumab and is more precise and reproducible than the currently available cell‐based functional assays.
Abstract: We describe the use of four complementary biosensors (Biacore 3000, Octet QK, ProteOn XPR36, and KinExA 3000) in characterizing the kinetics of human nerve growth factor (NGF) binding to a humanized NGF-neutralizing monoclonal antibody (tanezumab, formerly known as RN624). Tanezumab is a clinical candidate as a therapy for chronic pain. Our measurements were consistent with the NGF/tanezumab binding affinity being tighter than 10 pM due to the formation of an extremely stable complex that had an estimated half-life exceeding 100 h, which was beyond the resolution of any of our methods. The system was particularly challenging to study because NGF is an obligate homodimer, and we describe various assay orientations and immobilization methods that were used to minimize avidity in our experiments while keeping NGF in as native a state as possible. We also explored the interactions of NGF with its natural receptors, TrkA and P75, and how tanezumab blocks them. The Biacore blocking assay that we designed was used to quantify the potency of tanezumab and is more precise and reproducible than the currently available cell-based functional assays.
TL;DR: The syndrome of rapid progression of OA associated with chondrolysis and bone destruction appears to be a safety signal that is associated with not only increasing doses of anti-NGF antibodies but also concomitant therapy with nonsteroidal anti-inflammatory drugs.
TL;DR: Subjects receiving partial symptomatic relief of OA pain with NSAIDs may receive greater benefit with tanezumab monotherapy, and small differences in efficacy were negated by treatment-limiting or irreversible safety outcomes.
Abstract: Objective To evaluate whether subjects with knee or hip osteoarthritis (OA) pain on non-steroidal anti-inflammatory drugs (NSAIDs) received greater benefit when tanezumab monotherapy replaced or was coadministered with NSAIDs. Methods Subjects (N=2700) received intravenous tanezumab (5 or 10 mg) or placebo every 8 weeks with or without oral naproxen 500 mg twice daily or celecoxib 100 mg twice daily. Efficacy was assessed as change from baseline to week 16 in three co-primary endpoints: Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) Pain, WOMAC Physical Function and Patient9s Global Assessment (PGA) of OA. Safety assessments included adverse events, physical and neurological examinations, laboratory tests and vital signs. Results Although all tanezumab treatments provided significant improvements in WOMAC Pain and Physical Function over either NSAID alone, only tanezumab+NSAIDs were significant versus NSAIDs with PGA and met the prespecified definition of superiority. Combination treatment did not substantially improve pain or function over tanezumab monotherapy. Adverse event frequency was higher with tanezumab than with NSAIDs and highest with combination therapy. Higher incidence of all-cause total joint replacements occurred with tanezumab+NSAID versus tanezumab monotherapy or NSAIDs. Rapidly progressive OA incidence was significantly greater versus NSAID in all tanezumab groups except tanezumab 5 mg monotherapy. Conclusions Subjects receiving partial symptomatic relief of OA pain with NSAIDs may receive greater benefit with tanezumab monotherapy. While only coadministration of tanezumab with NSAIDs met the definition of superiority, combination treatment did not provide important benefits over tanezumab monotherapy; small differences in efficacy were negated by treatment-limiting or irreversible safety outcomes. Trial registration number NCT00809354
TL;DR: It is demonstrated that antibodies to NGF provide efficacy in OA and that general safety at the lower doses appears similar to placebo and additional data on both efficacy and safety are needed to define the optimal dose to maximize benefit to risk.