Patient Preference Data: Pfizer’s Tanezumab Study Had ‘Flaws’ That Made It ‘Uninformative’
Study showed osteoarthritis patients are more willing to accept risk of joint damage with NGF-inhibitors than dependency associated with opioids, Pfizer said; however, FDA highlighted key flaws in study design, sample population and survey content.
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Panelists say REMS would need data on long-term safety and progression of joint damage after discontinuation. In 19-1 vote, advisory committee concludes proposed Risk Evaluation and Mitigation Strategy will not ensure the anti-nerve growth factor’s modest benefits outweigh risks of joint destruction in osteoarthritis patients.
Measures aimed at mitigating risk of progressive joint damage with the first-in-class nerve growth factor inhibitor may not be clinically feasible to implement or prevent rapid progression of osteoarthritis, FDA reviewers say; agency briefing document describes efficacy as 'modest' and says the sponsor's patient preference study was flawed and 'uninformative.'
US FDA proposed increasing staffing and resources for both programs during the next user fee program cycle, but industry representatives did not believe it necessary.