CompletedPhase 1

Phase I Clinical Trial of ManNAc in Patients With GNE Myopathy or Hereditary Inclusion Body Myopathy (HIBM)

United States26 participantsStarted 2012-09-11

Plain-language summary

Background: \- 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. Objectives: * \<TAB\>To study how MaNAc is absorbed into and removed from the blood in people with HIBM. * \<TAB\>To study of safety of ManNAc in people with HIBM. Eligibility: \- Individuals between 18 and 70 years of age who have HIBM. Design: * Participants will be screened with a physical exam and medical history. Blood and urine samples will be collected. * Participants will have a 3 to 4-day inpatient stay for the main part of the study. * Participants will be divided into groups of six. In each group, four will take ManNAc and two will take a placebo. Participants will not know which one they will receive. * Participants will have a single dose of either ManNAc or placebo. They will be monitored for any possible side effects. Frequent blood samples will be collected during the 4-day stay. * No treatment for HIBM will be provided as part of this study.

Who can participate

Age range

18 Years – 70 Years

Sex

ALL

See this in plain English?

AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.

* INCLUSIONI CRITERIA: * Subject is 18-70 years, either gender, inclusive. * Subject has a diagnosis of HIBM (or IBM2, GNE myopathy, DMRV or Nonaka myopathy) based upon a consistent clinical course and identification of 2 GNE mutations. Molecular confirmation of the diagnosis will be obtained for all subjects in the study. * Subject must be willing to stop any treatment with ManNAc, sialic acid, IVIG, and/or other supplements containing sialic acid (eg, St John s wort, sialyllactose) 30 days prior to randomization and remain off such treatment for the duration of the trial. * Subject has the ability to travel to the NIH Clinical Center (CC) for admissions. * Subject (if a woman of reproductive age) must be willing to use an effective method of contraception for the duration of the trial. * Subject provides written informed consent. EXCLUSION CRITERIA: * Subject has a severe disease manifestation that would interfere with the ability to comply with the requirements of this protocol. * Subject has a psychiatric illness or neurological disease that would interfere with the ability to comply with the requirements of this protocol. This includes, but is not limited to, uncontrolled/untreated psychotic depression, bipolar disorder, schizophrenia, substance abuse or dependence, antisocial personality disorder, or panic disorder. * Subject has hepatic laboratory parameters (AST, ALT, GGTP), or renal laboratory parameters (creatinine, BUN) greater than 3 times the upper limit of nor…

Questions worth asking your doctor

Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.

1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?

Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.

Questions for the trial coordinator

The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.

1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?

A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.

What they're measuring

To evaluate the safety and tolerability of a single dose of orally administered ManNAc to HIBM subjects.

Trial details

NCT IDNCT01634750

SponsorNational Human Genome Research Institute (NHGRI)

Sponsor typeNIH

Study typeINTERVENTIONAL

View on ClinicalTrials.gov More Hereditary Inclusion Body Myopathy (HIBM) trials