| Monoclonal antibody | |
|---|---|
| Type | Whole antibody | 
| Source | Humanized (from mouse) | 
| Target | Nerve growth factor (NGF) | 
| Clinical data | |
| Other names | RN624 | 
| ATC code | |
| Identifiers | |
| CAS Number | |
| DrugBank | |
| ChemSpider | 
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| UNII | |
| Chemical and physical data | |
| Formula | C6464H9942N1706O2026S46 | 
| Molar mass | 145445.32 g·mol−1 | 
|   (what is this?)    (verify) | |
Tanezumab (INN, codenamed RN624) is a monoclonal antibody against nerve growth factor as a treatment for pain via a novel mechanisms different from conventional pain-killer drugs. [1] Tanezumab was discovered and developed by Rinat Neuroscience [2] and was acquired by Pfizer in 2006.
In 2009 there was a Phase III trial for knee pain due to osteoarthritis (OA). [3] Another Phase III trial for hip pain in OA [4] was halted in June 2010 when some patients needed hip replacement. [5]
Tanezumab is undergoing Phase II clinical trials for the treatment of various pain entities, including chronic low back pain, bone cancer pain, and interstitial cystitis. [6]
In March 2012, the Anti-NGF Testing - FDA Committee voted in favor of a continuation of the development of nerve-blocking medications, as long as certain safety precautions were observed. [7] [8]
A Phase III trial published in 2013 found tanezumab was superior to placebo for painful hip osteoarthritis. [9]
At February 19, 2019 the co-development partners - Eli Lilly and Pfizer - announced that treatment with tanezumab 10 mg met the primary endpoint, demonstrating a statistically significant improvement in chronic low back pain at 16 weeks compared to placebo (however, 5 mg arm demonstrated a numerical improvement in pain, but did not reach statistical significance compared to placebo at the week 16 analysis). [10]
On 16 September 2021, the Committee for Medicinal Products for Human Use (CHMP) of the European Medicines Agency (EMA) recommended the refusal of the marketing authorization for tanezumab (Raylumis), a medicine intended for the treatment of pain associated with osteoarthritis. [11]
On 25 March 2021, the FDA Joint Arthritis Advisory Committee and Drug Safety and Risk Management Advisory Committee voted 1 to 19 against the question : on whether the proposed risk evaluation and mitigation strategy (REMS) for tanezumab will ensure its benefits outweigh its risks. [12]