Phase I Clinical Trial of ManNAc in Patients With GNE Myopathy or Hereditary Inclusion Body Myopathy (HIBM)
|First Received Date ICMJE||July 3, 2012|
|Last Updated Date||June 25, 2014|
|Start Date ICMJE||September 2012|
|Primary Completion Date||Not Provided|
|Current Primary Outcome Measures ICMJE
||To evaluate the safety and tolerability of a single dose of orally administered ManNAc to HIBM subjects. [ Designated as safety issue: Yes ]|
|Original Primary Outcome Measures ICMJE||Same as current|
|Change History||Complete list of historical versions of study NCT01634750 on ClinicalTrials.gov Archive Site|
|Current Secondary Outcome Measures ICMJE
|Original Secondary Outcome Measures ICMJE||Not Provided|
|Current Other Outcome Measures ICMJE||Not Provided|
|Original Other Outcome Measures ICMJE||Not Provided|
|Brief Title ICMJE||Phase I Clinical Trial of ManNAc in Patients With GNE Myopathy or Hereditary Inclusion Body Myopathy (HIBM)|
|Official Title ICMJE||A Phase 1 Randomized, Placebo-Controlled, Double-Blind, Escalating Single-Dose Study to Evaluate the Safety, Tolerability, and Pharmacokinetics of ManNAc in Subjects With GNE Myopathy or Hereditary Inclusion Body Myopathy (HIBM)|
- Hereditary inclusion body myopathy (HIBM) is a genetic disorder caused by mutations in a gene called GNE. This gene is responsible for producing a sugar called sialic acid. Low levels of sialic acid may cause muscle problems. Symptoms of HIBM include walking difficulties and muscle weakness, which usually start in a person s 20s or 30s and become worse over time.
Researchers are studying a drug called ManNAc. It may be useful for treating HIBM. However, this drug is still being tested. Researchers want to see how ManNAc is absorbed into and removed from the blood. They will not be looking specifically at whether ManNAc can stop or slow the symptoms of HIBM.
- Individuals between 18 and 70 years of age who have HIBM.
Hereditary inclusion body myopathy (HIBM) is an autosomal recessive, neuromuscular disorder characterized by progressive muscle weakness with onset in early adulthood. The causative gene, GNE, codes for the bifunctional enzyme uridine diphospho-N-acetylglucosamine (UDP-GlcNAc)-2-epimerase/N-acetylmannosamine (ManNAc) kinase (GNE/MNK), which catalyzes the first 2 steps in the biosynthesis of sialic acid. The subsequent paucity of sialic acid production is presumed to cause decreased sialylation of HIBM muscle glycoproteins, resulting in muscle deterioration. In this Phase 1, randomized, placebo-controlled, double-blind, escalating single-dose study, we propose to provide ManNAc (N-acetyl-D-mannosamine monohydrate) orally as a liquid solution to 3 cohorts of 6 subjects (Cohorts A, B, C) at doses of 3,000 mg, 6,000 mg, and 10,000 mg ManNAc, respectively, or up to the maximum tolerated dose (MTD). The objectives of this study are to evaluate the safety, tolerability, and pharmacokinetics (PK) of a single dose of orally administered ManNAc to HIBM subjects, to identify the MTD of a single dose of orally administered ManNAc to HIBM subjects, and to explore the effect of a single dose of ManNAc on potential pharmacodynamic (PD) markers of HIBM. All subjects will be randomly assigned in a 2:1 ratio to receive ManNAc (n equals 4) or placebo (n equals 2) and the decision to dose-escalate will be the responsibility of the Safety Review Committee (SRC). Safety will be assessed by adverse events (AEs), clinical laboratory tests, vital signs, physical examinations, and electrocardiograms (ECGs). PK will be assessed for both ManNAc and sialic acid.
|Study Type ICMJE||Interventional|
|Study Phase||Phase 1|
|Study Design ICMJE||Allocation: Randomized
Endpoint Classification: Safety Study
Intervention Model: Parallel Assignment
Masking: Double Blind (Subject, Investigator)
Primary Purpose: Treatment
|Intervention ICMJE||Drug: ManNAc
|Study Arm (s)||
* Includes publications given by the data provider as well as publications identified by ClinicalTrials.gov Identifier (NCT Number) in Medline.
|Recruitment Status ICMJE||Completed|
|Completion Date||May 2013|
|Primary Completion Date||Not Provided|
|Eligibility Criteria ICMJE||
.-.Subject has a severe disease manifestation that would interfere with the ability to comply with the requirements of this protocol.
|Ages||18 Years to 70 Years|
|Accepts Healthy Volunteers||No|
|Contacts ICMJE||Contact information is only displayed when the study is recruiting subjects|
|Location Countries ICMJE||United States|
|NCT Number ICMJE||NCT01634750|
|Other Study ID Numbers ICMJE||120207, 12-HG-0207|
|Has Data Monitoring Committee||Not Provided|
|Responsible Party||National Institutes of Health Clinical Center (CC) ( National Human Genome Research Institute (NHGRI) )|
|Study Sponsor ICMJE||National Human Genome Research Institute (NHGRI)|
|Information Provided By||National Institutes of Health Clinical Center (CC)|
|Verification Date||May 2014|
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