Rimegepant 75  mg in Subjects With Hepatic Impairment: Results of a Phase 1, Open‐Label, Single‐Dose, Parallel‐Group Study

AbstractRimegepant is a small-molecule calcitonin gene –related peptide receptor antagonist (gepant) with demonstrated efficacy and safety in the acute and preventive treatment of migraine. Here, we report the pharmacokinetics and safety of a single 75-mg oral dose of rimegepant in subjects with severe, moderate, or mild hepatic impairment and matched healthy subjects from an open-label, single-dose, 4-group phase 1 study. Thirty-six subjects aged 41-71 years were enrolled, including 6 each with severe, moderate, or mild hepatic impairment and 18 healthy subjects. All subjects completed the study. A<20% increase in total and unbound pharmacokinetics was observed in subjects with mild hepatic impairment and ≤65% increase with moderate hepatic impairment versus matched healthy controls. Total and unbound systemic exposure increased 2.0- and 3.9-fold in the severe hepatic impairment group. In subjects with severe hepatic impairment, geometric mean ratios (severe impairment/controls) for total concentra tions were 202.2% for area under the plasma concentration–time curve from time 0 to the last quantifiable concentration, 202.2% for area under the plasma concentration–time curve from time 0 to infinity, and 189.1% for maximum observed plasma concentration. Corresponding geometric mean ratios us ing unbound concentrations were 388.8% and 388.7%, respectively. Three (8.3%) subjects reported 4 treatment-emergent adverse events. Rimegepant is not recommended for use in adu...
Source: Clinical Pharmacology in Drug Development - Category: Drugs & Pharmacology Authors: Tags: Original Article Source Type: research