A 2-Part, Open-Label, Phase 1 Bioequivalence and Food-Effect Study of Ubrogepant in Healthy Adult Participants

This Phase 1 study of ubrogepant was conducted to establish the bioequivalence (BE) of the 50- and 100-mg to-be-marketed (TBM) tablet formulations with the clinical trial (CT) 100-mg tablet formulation and evaluate the food effect on the bioavailability of the 100-mg TBM tablet. This 2-part study enrolled healthy participants aged 18-45 years. Part A assessed BE following a single dose of TBM versus CT tablets. Part B evaluated the impact of a high-fat meal on ubrogepant pharmacokinetics. Safety and tolerability were assessed along with standard pharmacokinetic parameters. In Part A (n  =   47), the geometric mean ratio and 90% confidence intervals for maximum plasma drug concentration, area under the plasma concentration-time curve (AUC) from time zero to time t, and AUC from time zero to infinity for the TBM and CT formulations demonstrated BE. The time to peak exposure was the same for both formulations. In Part B (n  =  18), a high-fat meal delayed time to peak exposure and reduced maximum plasma drug concentration by 22%, with no effect on AUC. The occurrence of treatment-emergent adverse events was low, and the majority were mild. Ubrogepant TBM and CT tablets (1 × 100 mg or 2 × 50 mg) were bioequivalent under fasted conditions, and a high-fat meal had no clinically relevant effect on the bioavailability of the TBM tablet formulation.