Once‐daily oral small‐molecule glucagon‐like peptide‐1 receptor agonist lotiglipron (PF‐07081532) for type 2 diabetes and obesity: Two randomized, placebo‐controlled, multiple‐ascending‐dose Phase 1 studies

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AIM: To investigate the effects of lotiglipron (PF-07081532), a once-daily, oral small-molecule glucagon-like peptide-1 receptor agonist, in participants with type 2 diabetes (T2D) and/or obesity. MATERIALS AND METHODS: Two Phase 1 randomized, double-blind, placebo-controlled, multiple-ascending-dose studies were conducted to investigate the safety, tolerability, pharmacokinetics and pharmacodynamics of lotiglipron. RESULTS: Across the studies, 74 participants with T2D were treated for 28 or 42 days, and 26 participants with obesity without diabetes were treated for 42 days, following randomization to placebo or lotiglipron (target doses 10-180 mg/day, with dose titration to higher target doses). Most adverse events were mild (89.6%), with nausea the most frequently reported in both studies. There were no clinically meaningful adverse trends noted in safety laboratory tests, vital signs, or electrocardiogram parameters. In participants with T2D, lotiglipron resulted in dose-dependent reductions in mean daily glucose. The 180-mg dose was associated with least squares mean decreases from baseline in glycated haemoglobin (-1.61% [90% confidence interval {CI} -2.08, -1.14] vs. -0.61% [-1.56, 0.34] for placebo) and body weight (-5.10 kg [90% CI -6.62, -3.58] vs. -2.06 kg [90% CI -4.47, 0.36] for placebo) after 42 days; a similar magnitude of weight loss was seen in participants with obesity. The observed pharmacokinetic profile supported once-daily dosing. CONCLUSIONS: The profile of once-daily lotiglipron with doses up to 180 mg, as observed in these two Phase 1 studies, indicated a safety and tolerability profile consistent with the mechanism of action, with dose-dependent reductions in glycaemic indices (T2D) and body weight (both populations) after multiple doses. CLINICALTRIALS: gov identifier: NCT04305587, NCT05158244.

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