Pharmacokinetics and Tolerability of Zavesca® (Miglustat) In Patients With Juvenile GM2 Gangliosidosis

May 18, 2016 updated by: The Hospital for Sick Children

Pharmacokinetics and Tolerability of Zavesca® (Miglustat) In Patients With Juvenile GM2 Gangliosidosis: Single and Multiple Oral Doses

The purpose of the study is to investigate the pharmacokinetics of Zavesca (miglustat, OGT918) when given as single and multiple doses in juvenile patients with GM2 gangliosidosis.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

The GM2 gangliosidoses are a group of neuro-degenerative lysosomal storage diseases resulting from accumulation of GM2 and related glycolipids in the central nervous system (CNS). Tay-Sachs and Sandhoff disease are two variants which are indistinguishable in clinical grounds. According to the onset and rate of disease progression, the condition can be categorized in infantile, juvenile and adult forms. This open-label, single-arm study is designed to assess the pharmacokinetics, safety and tolerability of miglustat in juvenile patients. Miglustat will be administered at a maximum dose of 600 mg/day, divided into three doses per day. The dose used for patients in this pediatric age range will be related to the patient's body surface area. The pharmacokinetics assessments for the study will be performed in-hospital during a 24 hour period, and will take place at the day one and at the month 3 visits. The clinical (which includes safety and tolerability) assessments will be performed throughout the 24-month study period.

Study Type

Interventional

Enrollment (Actual)

5

Phase

  • Phase 2

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Canada
    • Ontario
      • Toronto, Ontario, Canada, M5G 1X8
        • The Hospital for Sick Children

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

6 years to 20 years (Child, Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Diagnosis of GM2 gangliosidosis confirmed by demonstration of profound deficiency of β-hexosaminidase A or A & B in peripheral blood leukocytes or cultured skin fibroblasts
  • Aged 6 to 20 years
  • Onset of characteristic clinical symptoms of the disease before age 15 years
  • Normal renal or hepatic function

Exclusion Criteria:

  • Fertile patients who do not agree to use adequate contraception throughout the study and for 3 months after cessation of miglustat treatment.
  • Patients who cannot tolerate the study procedures, cannot be compliant to therapy or who are unable to travel to the study center as required by this protocol.
  • Patients receiving other investigational agents within 3 months of study initiation.
  • Patients with disease that may affect absorption or elimination of drugs.
  • Patients suffering from clinically significant diarrhea (>3 liquid stools per day for > 7 days) without definable cause within 3 months of baseline visit, or who have a history of significant gastrointestinal disorders.
  • Patients with swallowing difficulties.
  • Patients with a high probability of dying during the study.
  • Patients who in the opinion of the investigator (for whatever reason) are thought to be unsuitable for the study.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: 1
Drug: miglustat
Target dose of 320 mg/m^2/day (divided in 3 doses) will be based on the Body Surface Area (BSA). For children with a BSA > 1.3, 200 mg TID will be administered. For children with a BSA of 0.8-1.3, 100 mg TID will be administered.
Other Names:
  • Zavesca

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
Concentration of miglustat in plasma
Time Frame: Periodic intervals up to 24 hours
Periodic intervals up to 24 hours

Secondary Outcome Measures

Outcome Measure
Time Frame
Changes in volume loss and signal intensity from baseline MRI
Time Frame: 12 months
12 months
Change in single-voxel N acetylaspartate (NAA) from baseline MRS
Time Frame: 1 month, 3 months, 6 months, 9 months, and 12 months
1 month, 3 months, 6 months, 9 months, and 12 months
Change in neuropsychological testing from baseline
Time Frame: 6 months and 12 months
6 months and 12 months
Change in nerve conduction
Time Frame: 6 months and 12 months
6 months and 12 months
Change in neurological examination from baseline
Time Frame: 1 month, 3 months, 6 months, 9 months, and 12 months
1 month, 3 months, 6 months, 9 months, and 12 months

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

The Hospital for Sick Children

Collaborators

Actelion

Investigators

  • Principal Investigator: Joe TR Clarke, MD, The Hospital for Sick Children, Toronto Canada

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

July 1, 2004

Primary Completion (Actual)

April 1, 2009

Study Completion (Actual)

April 1, 2009

Study Registration Dates

First Submitted

January 4, 2007

First Submitted That Met QC Criteria

January 4, 2007

First Posted (Estimate)

January 5, 2007

Study Record Updates

Last Update Posted (Estimate)

May 19, 2016

Last Update Submitted That Met QC Criteria

May 18, 2016

Last Verified

May 1, 2016

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 1000004763

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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