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Pharma Tech Outlook | Wednesday, September 22, 2021
Longboard intends to enter LP352 into a Phase 1b/2a efficacy trial in adult participants with DEEs in the first quarter of 2022 at study sites across the U.S.
FREMONT, CA: Longboard Pharmaceuticals, a clinical-stage biopharmaceutical firm focused on developing novel, transformative medicines for neurological diseases, has completed the Multiple Ascending Dose (MAD) portion of Phase 1 clinical trial to assess the safety, tolerability, Pharmacodynamics (PD), and Pharmacokinetics (PK) of escalating doses of LP352, an oral, centrally acting, next-generation 5-HT2c receptor superagonist, in healthy volunteers. Longboard intends to enter LP352 into a Phase 1b/2a efficacy trial in adult participants with DEEs in the first quarter of 2022 at study sites across the U.S.
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"We are very pleased that we achieved the goals of this trial, which were to explore the safety, tolerability, PK and PD of LP352 at several dose levels and determine the optimal expected dose range for our upcoming efficacy trial. We are encouraged by the initial safety and tolerability characteristics of LP352 observed in the trial and that it appears to have a potent effect on the 5-HT2c pathway," stated Dr. Phil Perera, Longboards Chief Medical Officer. "We believe LP352 has the potential to reduce seizures in a broad range of severe and devastating, treatment-resistant epilepsies, and we look forward to advancing the program in patients living with these debilitating disorders."
Phase 1 Trial
The LP352 Phase 1 trial (N=83) is a first-in-human, randomized, double-blind, placebo-controlled, four-part trial in healthy volunteers that included Single Ascending Dose (SAD) and MAD assessments. The trial's primary goals were to assess LP352's safety, tolerability, PK, and PD.
Five doses, along with the maximum planned dose, were evaluated in the MAD portion of the trial (N=43). Most of the Adverse Events (AEs) were mild to moderate, with headache being the most common. At the maximum planned dose, a single Serious Adverse Event (SAE) of anxiety was reported two days after the last dose of the study drug and was subsequently resolved.
The adverse effects were mostly consistent with the effects of serotonergic drugs on the Central Nervous System (CNS). LP352 increased prolactin in a dose- and exposure-dependent manner, indicating that the central 5-HT2c receptor was engaged, as well as dose-dependent increases in exposure (Cmaxand AUCtau).
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