A Study of the Efficacy and Safety of Eliglustat Tartrate (Genz-112638) in Type 1 Gaucher Patients

Eliglustat (Genz-112638) capsule as single 50 mg dose on Day 1 then eliglustat 50 mg twice daily (BID) from Day 2 to Day 19, then either eliglustat 50 mg BID (if Genz-99067\[active moiety of eliglustat in plasma\] trough plasma concentration was greater than or equal to \[\>=\]5 nanogram per milliliter \[ng/mL\] on Day 10) or eliglustat 100 mg BID(if Genz-99067 trough plasma concentration was less than \[\<\] 5 ng/mL), from day 20 to Year 4. After primary completion date (Week 52) participants underwent treatment interruption period of approximately 2 weeks before continuing same treatment through study completion (Year 9). Participant receiving 100 mg BID could be considered for further dose increase to 150 mg BID at Week 24 if they met certain criteria (for example, had been on treatment for at least 24 months, had not reached therapeutic goals established for participants receiving Cerezyme, and if all other causes for lack of treatment effect had been evaluated and ruled out).