Pfizer & Lilly report top-line results for tanezumab

Pfizer and Eli Lilly have reported top-line results from a Phase 3 study evaluating tanezumab 2.5 mg and 5 mg.

The objective of the study was to compare the long-term joint safety and 16-week efficacy of tanezumab relative to nonsteroidal anti-inflammatory drugs (NSAIDs) in patients with moderate-to-severe osteoarthritis (OA) of the hip or knee.

The tanezumab 5 mg treatment arm met two of the three co-primary efficacy endpoints, demonstrating a statistically significant improvement in pain and physical function compared to NSAIDs at the 16-week analysis, while patients’ overall assessment of their OA was not statistically different than NSAIDs.

Patients who received tanezumab 2.5 mg did not experience a statistically significant improvement in pain, physical function or patients’ overall assessment of their OA at 16 weeks compared to NSAIDs.

In the safety analysis, there was a higher rate of joint safety events in the tanezumab arms compared to NSAIDs at 80 weeks; the difference was statistically significant.

Joint safety was a composite measure consisting of adjudicated outcomes of rapidly progressive osteoarthritis (RPOA) type 1 or type 2, subchondral insufficiency fracture, osteonecrosis or pathological fracture.

Tanezumab is a monoclonal antibody that is part of an investigational class of non-opioid chronic pain medications known as nerve growth factor (NGF) inhibitors.

“We are analysing these findings in the context of the recent Phase 3 results as we assess potential next steps for tanezumab,” said Ken Verburg, tanezumab development team leader, Pfizer Global Product Development.

“We plan to review the totality of data from our clinical development program for tanezumab with regulatory authorities.”

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