Patients who have completed the Part2 of JR-171-101 study and fulfill all eligibility criteria can be enrolled in this JR-171-102 study. Until the dose determination in the JR-171-102 study, subjects will intravenously receive either low dose or high dose of JR-171 at the same doses received at Week 12 of the JR-171-101 study. Thereafter, all subjects will be transitioned to the optimal dose determined based on the results of JR-171-101 study.
Phase I/II, open label, multicenter, multinational (Japan, Brazil and the US) extension study of JR-171-101 for the treatment of MPS I