A Phase Ⅲ Study of JR-141 in Patients With Mucopolysaccharidosis II

• Status: Not yet recruiting
• Trial end date: 2024-08-31
• Target enrollment: 0
• Participant gender: Male

Summary

A Global Phase III multicenter, randomized, assessor-blinded, active-controlled designed to evaluate safety and efficacy of study drug for the treatment of the MPS II.

• Phase: Phase 3
• Accepts Healthy Volunteers?: No

Details

• Lead Sponsor: JCR Pharmaceuticals Co., Ltd.

Criteria

Inclusion Criteria:

• A patient from whom a voluntarily signed written Institutional Review Board or Independent Ethics Committee-approved informed consent form can be obtained. If the patient is aged under 18 years at the time of assent or willingness to participate in the study cannot be confirmed due to MPS II-related intellectual disability, informed permission from the patient's legally acceptable representative (e.g. his parents or guardians) needs to be obtained instead of his consent or assent. (however, written consent should be obtained from the patient himself too, whenever possible)

• Males with confirmed diagnosis of MPS II

• Naïve patients or patients who are receiving stable enzyme replacement therapy with idursulfase for more than 12 weeks before starting the JR-141 administration.

• Male patients whose co-partners are of child-bearing potential agree to use a medically accepted, highly effective method plus an approved method of effective contraception from the time of informed consent.

• Males aged 36-71 months old whose standard score by BSID-III or KABC-II is between 65-85 at screening; OR

• Males aged 30-35 months old at screening, with presence of the mutation in the IDS gene, and who are judged as having the severe phenotype by the Expert Board.

• Males aged 6 years or older and whose IQ are 70 and higher.

• Attenuated patients with 1 SD deficiency in the omission errors or variability domains of the TOVA test.

Exclusion Criteria:

• Use of gene therapy or hematopoietic stem cell transplantation (HSCT), excluding those who need enzyme replacement therapy even after HSCT.

• Unable to undergo lumbar puncture.

• A patient who has received other investigational product (drug or device) within 4 months of study enrollment.

• Unable to comply with the protocol as determined by the principal investigator or subinvestigator.

• Judged by the principal investigator or subinvestigator to be ineligible to participate in the study due to a history of serious drug allergy or sensitivity including sensitivity to anesthesia or hypersensitivity to any component of JR-141.

• A patient who has a known or suspected local or general infection or is at risk of abnormal bleeding due to a medical condition or therapy.A patient who otherwise is judged by the principal investigator or subinvestigator to be ineligible to participate in the study.