A Study to Evaluate Pharmacokinetic Parameters of Eliglustat in Healthy Volunteers Who Are CYP2D6 Extensive or Poor Metabolizers

Inclusion Criteria: * Body weight between 50.0 and 100.0 kg, inclusive, if male, and between 40.0 and 90.0 kg, inclusive, if female, body mass index between 18.0 and 30.0 kg/m2, inclusive. * Certified as healthy by a comprehensive clinical assessment (detailed medical history, complete physical examination, laboratory parameters, electrocardiograms (ECG)). * Having given written informed consent prior to undertaking any study-related procedure * Having given written informed consent prior to undertaking any study-related procedure Exclusion Criteria: Participants are excluded from the study if any of the following criteria apply: * Any history or presence of clinically relevant cardiovascular, pulmonary, gastrointestinal, hepatic, renal, metabolic, hematological, neurological, osteomuscular, articular, psychiatric, systemic, ocular, gynecologic (if female), or infectious disease, or signs of acute illness. The following classes of drugs administered within 14 days before inclusion or within 5 times the elimination half-life or pharmacodynamic half-life of the medication, with the exception of hormonal contraception or menopausal hormone replacement therapy: * Drugs that are strong inducers of CYP3A (eg, rifampin, carbamazepine, phenobarbital,phenytoin, St. John's Wort). * Drugs that inhibit CYP2D6 or CYP3A (eg, paroxetine, ketoconazole, fluconazole,ranitidine). * Drugs that are substrates for P-gp (phenytoin, colchicine and dabigatran etexilate) or CYP2D6 (metoprolol, t…