An Open-label Safety, Pharmacokinetic, and Efficacy Study of the Combination of Miglustat for the Treatment of CLN3 Disease in Patients 17 Years of Age and Older

Who is this study for? Patients 17 years of age and older with CLN3 disease
What treatments are being studied? Miglustat
Status: Active, not recruiting
Location: See location...
Intervention Type: Drug
Study Type: Interventional
Study Phase: Phase 1/Phase 2

This is an open label study in approximately 6 subjects in 2 centers to assess the safety, PK, and efficacy of the maximum tolerable dose (MTD) of oral miglustat (100 mg once daily [QD] to 200 mg 3 times daily [TID]) in subjects ≥ 17 years of age with CLN3 disease over a period of 104 weeks.

Participation Requirements
Sex: All
Minimum Age: 17
Healthy Volunteers: No

• Individuals

• Have provided informed consents (TCH and NIH) by subject or parent/legal guardian/legally authorized representative (as appropriate).

• Are males or females ≥ 17 years of age at the time of screening

• Have genetically confirmed diagnosis of syndromic CLN3 disease with


• A. Two pathogenic mutations in the CLN3 gene, OR B. One confirmed pathogenic AND one variant of unknown significance, OR 2 variants of unknown significance, PLUS secondary confirmation with evidence of characteristic inclusions on electron microscopy AND characteristic clinical course. There is no restriction on the specific CLN3 mutations for eligibility to enroll in the study. The mutations will be recorded in the electronic case report form (eCRF) for potential use in determining if CLN3 genotype is associated with tolerability and/or effectiveness of BBDF-101 therapy.

• Male and female participants must use a highly effective method of contraception and must continue for the duration of the trial (and for 30 days after the end of treatment).

• Are able to complete study assessments (subject or caregiver) and return to the clinic as scheduled

United States
Texas Children Hospital
Time Frame
Start Date: February 2, 2022
Estimated Completion Date: October 2024
Target number of participants: 6
Experimental: Oral miglustat
The proposed dosing regimen is daily oral miglustat (MTD, up to 200 mg TID)
Collaborators: Theranexus
Leads: Beyond Batten Disease Foundation

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