Safety and Pharmacokinetics of AT1001 (Migalastat HCl) in Healthy Subjects and Subjects With Impaired Renal Function

This will be an open-label, non-randomized, multiple-center, sequential group, safety, tolerability, and PK study of a single dose of AT1001 (migalastat HCl, GR181413A) administered orally as a 150 mg dose in fasted healthy control male and female subjects with normal renal function compared to mild, moderate, and severe renally-impaired subjects (classified by level of creatinine clearance \[CLcr\] as determined by the Cockcroft-Gault formula). Screening will occur from Day -28 to Day -2. Subjects will check-in to the clinic on Day -1 and receive a single oral dose of 150 mg AT1001 on Day 1. Subjects will be discharged from the clinic on Day 2 (if stable as determined by the Investigator) and return for daily visits on Day 3 through Day 6 for a safety assessment and PK sampling. Subjects will undergo a follow-up visit on Day 7 (+1) and an end of study visit on Day 10 (+1).