Lexicon Taps Pilavapadin 10mg for Phase 3

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Lexicon Pharmaceuticals says it will advance pain drug pilavapadin 10mg into a planned Phase 3 trial based on just-announced Phase 2 PROGRESS study results. The oral, non-opioid investigational adaptor-associated kinase 1 inhibitor is being evaluated in adult patients with moderate to severe diabetic peripheral neuropathic pain.

“In the PROGRESS study, all pilavapadin treatment arms demonstrated reductions in the mean average daily pain score (ADPS) from baseline to Week 8 with the 10 mg, 20 mg/10 mg [20 mg starting dose followed by 10 mg thereafter] and 20 mg dose arms achieving reductions of 1.74, 1.70 and 1.38, respectively, compared to a reduction of 1.31 in the placebo arm,” the company says. “As a result of the lack of separation in ADPS reduction between the 20 mg dose arm and placebo, the study results did not reach statistical significance on the primary endpoint (p=0.11). However, the 10 mg dose arm demonstrated clear evidence of effect by achieving early and clinically meaningful separation from placebo on ADPS that was maintained throughout the study duration.”

Lexicon says adverse events were more frequent in the pilavapadin treatment arms, and they were reported as mild or moderate. Adverse events were most prominent in the 20 mg dose and pilavapadin was generally well-tolerated at the 10 mg dose, it says, adding that dizziness and nausea were the most commonly reported adverse events.

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