Triheptanoin Treatment Trial for Patients With Adult Polyglucosan Body Disease

March 1, 2018 updated by: Baylor Research Institute

A Treatment Trial of Triheptanoin in Patients With Adult Polyglucosan Body Disease - A Randomized Controlled Study

The purpose of the study is to determine if triheptanoin is an effective treatment for the symptoms of Adult Polyglucosan Body Disease.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

Adult polyglucosan disease is a progressive neurogenetic disorder characterized by neurogenic bladder, progressive difficulty with walking, and sensory abnormalities in the lower extremities which typically present in the 4th or 5th decade of life. The pathogenesis of the disease includes the accumulation of intracellular polyglucosan bodies (amylopectin-like polysaccharides) in the peripheral nerves as well as the central nervous system cells and is often associated with brancher enzyme deficiency which causes improper glycogen formation. It is hypothesized that decreased glycogen degradation leads to energy deficit in the nervous system cells. Therefore, anaplerotic therapy may supply needed substrate to the citric acid cycle to correct the energy deficit. This intervention may slow, halt or reverse the progression of the disease, for which there is no effective treatment. The trial involves 18 subjects ingesting a diet supplemented with triheptanoin, a 7 carbon triglyceride or a placebo of vegetable oil at a dose of 1-2 g/kg/24 hours in a randomized crossover controlled double blind study. The study lasts one year with patients receiving triheptanoin for 6 mo and the placebo oil for 6 mo. Safety monitoring includes urine organic acids and acyl carnitine profile.

Study Type

Interventional

Enrollment (Actual)

23

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

  • France
      • Paris, France, 75013
        • Department of Genetics, Groupe Hospitalier Pitié-Salpêtrière

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

14 years to 71 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Confirmed diagnosis of APBD by the presence of mutations of the GBE1 gene in both alleles or brancher enzyme deficiency
  • Willing and able to travel to Dallas TX
  • Able to tolerate dietary oil
  • Able to provide informed consent

Exclusion Criteria:

  • Intercurrent medical conditions that would confound the assessment of efficacy, such as HIV or diabetes
  • Patients who are wheelchair bound
  • Patients deemed unsuitable for the study by the investigator

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: Randomized
  • Interventional Model: Crossover Assignment
  • Masking: Double

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Other: Active/Placebo
Subjects receive 1-2 grams/kilogram body weight triheptanoin divided into 4 equal doses taken with meals and snack for 6 months crossing over to receive placebo vegetable oil at the same dose and frequency for the next 6 months during the randomization phase.
Drug: Triheptanoin
1-2 grams triheptanoin (drug)/kilogram body weight divided into 4 equal doses per day taken with meals and a snack for 6 months followed by 1-2 grams vegetable oil (placebo)/kilogram body weight divided into 4 equal doses per day taken with meals and a snack for 6 months.
Other: Vegetable Oil
1-2 grams vegetable oil (placebo)/kilogram body weight divided into 4 equal doses per day taken with meals and a snack for 6 months followed by 1-2 g triheptanoin (drug)/kilogram body weight for 6 months.
Other Names:
  • Placebo
Other: Placebo/Active
Subjects receive 1-2 grams/kilogram body weight placebo vegetable oil divided into 4 equal doses taken with meals and snack for 6 months crossing over to receive triheptanoin at the same dose and frequency for the next 6 months during the randomization phase.
Drug: Triheptanoin
1-2 grams triheptanoin (drug)/kilogram body weight divided into 4 equal doses per day taken with meals and a snack for 6 months followed by 1-2 grams vegetable oil (placebo)/kilogram body weight divided into 4 equal doses per day taken with meals and a snack for 6 months.
Other: Vegetable Oil
1-2 grams vegetable oil (placebo)/kilogram body weight divided into 4 equal doses per day taken with meals and a snack for 6 months followed by 1-2 g triheptanoin (drug)/kilogram body weight for 6 months.
Other Names:
  • Placebo

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
Distance traveled in six minute walk test
Time Frame: every three months
every three months

Collaborators and Investigators

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

Sponsor

Baylor Research Institute

Collaborators

Ultragenyx Pharmaceutical Inc

Investigators

  • Principal Investigator: Raphael Schiffmann, M.D, M.H.Sc, Institute of Metabolic Disease

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

June 1, 2009

Primary Completion (Actual)

July 1, 2015

Study Completion (Actual)

July 1, 2015

Study Registration Dates

First Submitted

July 24, 2009

First Submitted That Met QC Criteria

July 27, 2009

First Posted (Estimate)

July 28, 2009

Study Record Updates

Last Update Posted (Actual)

March 5, 2018

Last Update Submitted That Met QC Criteria

March 1, 2018

Last Verified

March 1, 2018

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 009-103

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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