EPI-743 for Metabolism or Mitochondrial Disorders

NCT ID: NCT01642056

Last Updated: 2021-04-14

Basic Information

• Recruitment Status: COMPLETED
• Clinical Phase: PHASE1/PHASE2
• Total Enrollment: 20 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2012-09-01
• Study Completion Date: 2019-09-24

Brief Summary

Background:

• Mitochondria are the parts of cells that help produce energy. Metabolism is the process by which the body uses energy to help cells grow and reproduce. Metabolic and mitochondrial disorders affect the body s ability to produce and store energy. These disorders can cause a wide variety of problems, but most often they affect the muscles and the brain, where energy requirements are high. Treatment is difficult because the exact source of the problem is hard to detect.
• EPI-743 is a new drug that is based on vitamin E. Tests have shown that it can help improve the function of cells with mitochondrial problems. It may be able to treat people with genetic disorders that affect metabolism and mitochondria.

Objectives:

• To see if EPI-743 can improve energy production and use in people with mitochondrial or metabolic disorders.

Eligibility:

• Children between 2 and 11 years of age who have metabolic or mitochondrial problems.

Design:

• Participants will be screened with a physical exam and medical history. Blood and urine samples will be collected.
• The study will last about 13 months. Participants will have seven 3- to 5-day inpatient study visits about 3 months apart.
• Participants will take either EPI-743 or a placebo for the first 6 months of the study. After 6 months, there will be a 1-month rest period. Then, those who received EPI-743 in the first 6 months will take the placebo for the next 6 months. Those who had the placebo will take EPI-743.
• During each inpatient study visit, participants will have a physical exam. A 24-hour urine collection will be obtained. Blood samples will also be taken. Imaging studies and other tests may be performed as directed by the study researchers.

Detailed Description

The clinical manifestations of disorders of energy metabolism and defects in oxidation/reduction are similar because the basic defect involves the inability to transfer electrons. The same is true for many mitochondrial diseases. Affected patients exhibit a wide variety of signs and symptoms, but the most frequent and earliest dysfunctions occur in the muscle and brain, where energy requirements are high. The diagnosis of this type of defect is problematic because of the nonspecific and protean clinical manifestations of these disorders. Treatment is equally challenging, since the exact locus of the primary defect generally remains enigmatic. As a consequence, physicians rely upon generic cocktails of vitamin co-factors or endogenous intermediates intended to enhance mitochondrial electron transport, diminish the damage of reactive oxygen species, and promote energy production. The field is such a morass that, in general, it calls for trial-and-error treatment based upon empiric data. Edison Pharmaceuticals, Inc, has developed an in vitro assay that utilizes patient fibroblasts to model the innate susceptibility to oxidative stress caused by the disorders of energy metabolism and oxidation/reduction. The assay system also determines if the cells respond with increased viability to an IND drug called EPI-743. We propose a clinical trial that enrolls 20 children who meet three criteria. First, they must have a disorder that, based upon studies performed in a clinical protocol such as 76-HG-0238 ("Diagnosis and Treatment of Patients with Inborn Errors of Metabolism and Other Genetic Disorders"), is consistent with a defect in energy metabolism or oxidation/reduction. Second, their cultured fibroblasts must exhibit a defect in the ability to withstand oxidant stress. Third, their fibroblasts must respond to EPI-743 in vitro by showing improved viability under conditions of oxidative stress. This protocol is a double-blind, placebo-controlled crossover study with 6-month periods of treatment and a two-month washout period. Patients will be admitted to the NIH Clinical Center for 2-5 days every 3 months. The primary outcome measure will be quality of life based upon the Newcastle Paediatric Mitochondrial Disease Scale (NPMDS) for ages 2-11 years; parts IIII

will be evaluated separately from part IV. Secondary outcome measures will be tailored to each patient's laboratory, imaging, and clinical abnormalities. Results while receiving EPI-743 will be compared to results while receiving placebo; both repeated measures analyses and Student's t test will be employed.

Conditions

Mitochondrial Disease; Neurology; Myopathy

Study Design

• Allocation Method: NON_RANDOMIZED
• Intervention Model: CROSSOVER
• Primary Study Purpose: TREATMENT
• Blinding Strategy: DOUBLE

Study Groups

EPI-743, then Placebo

Received EPI-743, 15mg/kg up to a maximum dose of 200 mg orally or via gastric tube three times daily with meals, then placebo three times daily orally or via gastric tube with meals. EPI-743 is structurally related to Vitamin E and can be broadly classified as an antioxidant.

Group Type: EXPERIMENTAL

EPI-743

Intervention Type: DRUG

This medication is used to treat disorders of energy metabolism such as mitochondrial diseases. It does not correct the inherited disorder of energy metabolism or mitochondrial diseases. EPI-743 is structurally related to Vitamin E and can be broadly classified as an antioxidant.

Placebo

Intervention Type: DRUG

Placebo, then EPI-743

Received Placebo three times daily orally or via gastric tube with meals, then EPI-743, 15mg/kg up to a maximum dose of 200 mg three times daily orally or via gastric tube with meals. EPI-743 is structurally related to Vitamin E and can be broadly classified as an antioxidant.

Group Type: PLACEBO_COMPARATOR

EPI-743

Intervention Type: DRUG

This medication is used to treat disorders of energy metabolism such as mitochondrial diseases. It does not correct the inherited disorder of energy metabolism or mitochondrial diseases. EPI-743 is structurally related to Vitamin E and can be broadly classified as an antioxidant.

Placebo

Intervention Type: DRUG

Interventions

EPI-743

This medication is used to treat disorders of energy metabolism such as mitochondrial diseases. It does not correct the inherited disorder of energy metabolism or mitochondrial diseases. EPI-743 is structurally related to Vitamin E and can be broadly classified as an antioxidant.

Intervention Type: DRUG

Placebo

Intervention Type: DRUG

Eligibility Criteria

Inclusion Criteria

• Be 2-11 years of age
• Manifest clinical findings of a neuromuscular disease with a component of impaired energy or oxidation/reduction. Typical symptoms would include hypotonia, dystonia, or seizures.
• Have a disorder that is untreatable or poorly treatable.
• Have cultured fibroblasts that exhibit reduced viability under conditions of oxidative stress, compared to age matched control fibroblasts.
• Have cultured fibroblasts that achieve at least 80% viability rescue with EPI-743 at 1micromolar upon exposure to oxidative stress and that have a half maximal effective concentration of EPI-743 of less than or equal to 50 nanomolar.
• Be willing to abstain from initiating the use of dietary supplements and nonprescribed medications, foods or beverages or bars fortified with coenzyme Q(10), vitamin E, super fortified functional foods or beverages, and idebenone.
• Be able to travel to the Clinical Center for at least 8 visits.

Exclusion Criteria

• Age < 2 years or >11 years
• Diagnosis of mitochondrial diseases benefiting from treatment and at risk from being moved to placebo
• Allergy to EPI-743 or sesame oil
• Hepatic insufficiency with liver function tests greater than 3-times the upper limit of normal
• Renal insufficiency requiring dialysis
• Significant malabsorption of fats precluding drug absorption
• Allergy to vitamin E
• Significant coagulation abnormalities as evidenced by abnormal PT/PTT tests
• Severe end-organ hypo-perfusion syndrome secondary to cardiac failure resulting in lactic acidosis
• Ventilator-dependence
• Chronic pancreatitis
• Clinical history of bleeding requiring ongoing medical management
• Abnormal red cell parameters requiring ongoing medical management besides iron supplementation
• A platelet disorder
• Neutrophils less than 500 mm3

• Minimum Eligible Age: 2 Years
• Maximum Eligible Age: 11 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: No

Sponsors

National Human Genome Research Institute (NHGRI)

NIH

Sponsor Role: lead

Responsible Party

Responsibility Role: SPONSOR

Principal Investigators

William A Gahl, M.D.

Role: PRINCIPAL_INVESTIGATOR

National Human Genome Research Institute (NHGRI)

Locations

National Institutes of Health Clinical Center, 9000 Rockville Pike

Bethesda, Maryland, United States

Countries

United States

References

Shrader WD, Amagata A, Barnes A, Enns GM, Hinman A, Jankowski O, Kheifets V, Komatsuzaki R, Lee E, Mollard P, Murase K, Sadun AA, Thoolen M, Wesson K, Miller G. alpha-Tocotrienol quinone modulates oxidative stress response and the biochemistry of aging. Bioorg Med Chem Lett. 2011 Jun 15;21(12):3693-8. doi: 10.1016/j.bmcl.2011.04.085. Epub 2011 Apr 24.

Reference Type: BACKGROUND

PMID: 21600768 (View on PubMed)

Sadun AA, Chicani CF, Ross-Cisneros FN, Barboni P, Thoolen M, Shrader WD, Kubis K, Carelli V, Miller G. Effect of EPI-743 on the clinical course of the mitochondrial disease Leber hereditary optic neuropathy. Arch Neurol. 2012 Mar;69(3):331-8. doi: 10.1001/archneurol.2011.2972.

Reference Type: BACKGROUND

PMID: 22410442 (View on PubMed)

Provided Documents

Document Type: Study Protocol and Statistical Analysis Plan

View Document

Related Links

https://clinicalstudies.info.nih.gov/cgi/detail.cgi?B_2012-HG-0161.html

NIH Clinical Center Detailed Web Page

Other Identifiers

12-HG-0161

Identifier Type: -

Identifier Source: secondary_id

120161

Identifier Type: -

Identifier Source: org_study_id