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Muscular DystrophyNCT00313677

Clinical Trial Readiness for the Dystroglycanopathies

An observational study of Muscular Dystrophy, run by Katherine Mathews at 1 site in United States.

Recruiting

Looking for participants now. Contact the study team or a site below to ask about taking part.

Sites and contacts
Official record
Search all trials

Trial summary

The purpose of the study is to describe the early signs and symptoms of the dystroglycanopathies, and to gather information that will be required for future clinical trials. Read more about this study

Who is it for?
Any age
Conditions the study is for
Muscular Dystrophy
How many people
190 participants
Where
1 siteUnited States
Study dates
Apr 2006to Jul 2030
Phase
Observational
Are there results?
Not yet: the study is under way

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages Any age
  • All sexes
  • No healthy volunteers
  • Child, Adult, Older adult

Study population: neuromuscular care clinic

Who may be able to join

  • Elevated CK (creatine kinase)
  • Evidence of a dystroglycanopathy as determined by review of muscle pathology OR documented mutation in one of the known genes OR abnormal alpha-dystroglycan glycosylation in cultured fibroblasts
  • Dystroglycanopathies are predicted to affect all racial and ethnic backgrounds, and all patients with dystroglycanopathies will be eligible for participation.
  • Participants may be of any age, including children, and males and females will be recruited equally.
  • Patients will have varying degrees of muscular weakness, but otherwise should be in relatively good health.

Who cannot join

  • There are no exclusion criteria.

Trial locations and contacts

1 site in 1 country. Contact the study team or a site near you to ask about taking part.

Carrie Stephan, R.N. M.A. contact

(319) 356-2673

United States1 site, 1 recruiting

  • University of Iowa, 200 Hawkins Drive

    Iowa City, Iowa, 52242

    Carrie Stephan, R.N. M.A., (319)356-2673

    Recruiting

Other trials in United States

About this study

The purpose of the study is to describe the early signs and symptoms of the dystroglycanopathies, and to gather information that will be required for future clinical trials.

Read the detailed description

Muscular dystrophies are a diverse group of inherited disorders characterized by progressive muscle weakness and wasting. The disorders are caused by mutations, or changes, in genes. Genes are tiny pieces of inherited material (DNA) that direct the body to make certain kinds of proteins.

In this study, researchers will examine the clinical presentation of muscular dystrophy caused by abnormal glycosylation of alpha-dystroglycan. Patients with dystroglycanopathies could have mutations in any one of the more than 20 currently identified genes, or evidence of dystroglycanopathy in biopsied muscle tissue . Symptoms range from congenital muscular dystrophy that may involve the brain and eye, through an adult-onset limb girdle muscular dystrophy.

The study involves a clinical evaluation at the University of Iowa. The evaluation includes muscle strength and motor ability testing, lung function testing, quality of life and activity assessment, and a review of past medical history. Portions of this evaluation will be repeated on a yearly basis. Financial assistance is available for travel to Iowa City. Support is also available for genetic testing for people with a dystroglycanopathy diagnosis based on muscle or skin biopsy analysis.

Knowledge gained from this study will improve healthcare recommendations for people with dystroglycanopathies, and provide a baseline for further study, including potential treatment options.

Keywords
muscular dystrophy, MD, fukutin-related protein gene, limb girdle, FKRP gene, congenital muscular dystrophy, childhood onset LGMD, adult onset LGMD, POMT1, POMT2, POMGnT1, LARGE, alpha dystroglycan, dystroglycanopathy, ISPD/CRPPA, DPM 1, 2 or 3, GMPPB, B3GNT1/B4GAT1, B3GALNT2, GTDC2/POMGnT2
Medical subject headings
Muscular Dystrophies, Muscular Dystrophy, Limb-Girdle, Type 2I, Walker-Warburg Syndrome, Muscular Dystrophy, Limb-Girdle, Type 2M

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. 10 meter walk

    time to walk 10 meters without assistive device

    Measured: through study completion, an average of 1 yea

Secondary outcomes (1)

  1. 4 stair climb

    time to climb 4 stairs with or without use of rails

    Measured: through study completion, an average of 1 yea

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted12 Apr 2006 (estimated)
  2. Study startApr 2006
  3. Primary completionJul 2030 (estimated)
  4. Study completionJul 2030 (estimated)

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Observational
Observational model
Cohort
Time perspective
Prospective
Enrolment
190 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT00313677
Sponsor's protocol ID
200510743
Other IDs
U54NS053672
Status last verified
Jul 2025
First submitted
10 Apr 2006
Last updated
30 Jul 2025
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
No

Publications

  • Crockett CD, Bertrand LA, Cooper CS, Rahhal RM, Liu K, Zimmerman MB, Moore SA, Mathews KD. Urologic and gastrointestinal symptoms in the dystroglycanopathies. Neurology. 2015 Feb 3;84(5):532-9. doi: 10.1212/WNL.0000000000001213. Epub 2015 Jan 7.

    PubMed 25568299

  • Mathews KD, Stephan CM, Laubenthal K, Winder TL, Michele DE, Moore SA, Campbell KP. Myoglobinuria and muscle pain are common in patients with limb-girdle muscular dystrophy 2I. Neurology. 2011 Jan 11;76(2):194-5. doi: 10.1212/WNL.0b013e3182061ad4. No abstract available.

    PubMed 21220724

  • Jensen BS, Willer T, Saade DN, Cox MO, Mozaffar T, Scavina M, Stefans VA, Winder TL, Campbell KP, Moore SA, Mathews KD. GMPPB-Associated Dystroglycanopathy: Emerging Common Variants with Phenotype Correlation. Hum Mutat. 2015 Dec;36(12):1159-63. doi: 10.1002/humu.22898. Epub 2015 Sep 23.

    PubMed 26310427

  • Brun BN, Willer T, Darbro BW, Gonorazky HD, Naumenko S, Dowling JJ, Campbell KP, Moore SA, Mathews KD. Uniparental disomy unveils a novel recessive mutation in POMT2. Neuromuscul Disord. 2018 Jul;28(7):592-596. doi: 10.1016/j.nmd.2018.04.003. Epub 2018 Apr 10.

    PubMed 29759639

  • Lee AJ, Jones KA, Butterfield RJ, Cox MO, Konersman CG, Grosmann C, Abdenur JE, Boyer M, Beson B, Wang C, Dowling JJ, Gibbons MA, Ballard A, Janas JS, Leshner RT, Donkervoort S, Bonnemann CG, Malicki DM, Weiss RB, Moore SA, Mathews KD. Clinical, genetic, and pathologic characterization of FKRP Mexican founder mutation c.1387A>G. Neurol Genet. 2019 Mar 1;5(2):e315. doi: 10.1212/NXG.0000000000000315. eCollection 2019 Apr.

    PubMed 31041397

  • Gonzalez-Perez P, Smith C, Sebetka WL, Gedlinske A, Perlman S, Mathews KD. Clinical and electrophysiological evaluation of myasthenic features in an alpha-dystroglycanopathy cohort (FKRP-predominant). Neuromuscul Disord. 2020 Mar;30(3):213-218. doi: 10.1016/j.nmd.2020.01.002. Epub 2020 Jan 25.

    PubMed 32115343

  • Hagedorn JL, Dunn TM, Bhattarai S, Stephan C, Mathews KD, Pfeifer W, Drack AV. Electroretinogram abnormalities in FKRP-related limb-girdle muscular dystrophy (LGMDR9). Doc Ophthalmol. 2023 Feb;146(1):7-16. doi: 10.1007/s10633-022-09909-4. Epub 2022 Nov 18.

    PubMed 36399172

  • Weiss RM, Kerber RE, Jones JK, Stephan CM, Trout CJ, Lindower PD, Staffey KS, Campbell KP, Mathews KD. Exercise-induced left ventricular systolic dysfunction in women heterozygous for dystrophinopathy. J Am Soc Echocardiogr. 2010 Aug;23(8):848-53. doi: 10.1016/j.echo.2010.05.007. Epub 2010 Jun 19.

    PubMed 20646909

  • Brun BN, Mockler SR, Laubscher KM, Stephan CM, Wallace AM, Collison JA, Zimmerman MB, Dobyns WB, Mathews KD. Comparison of brain MRI findings with language and motor function in the dystroglycanopathies. Neurology. 2017 Feb 14;88(7):623-629. doi: 10.1212/WNL.0000000000003609. Epub 2017 Jan 13.

    PubMed 28087826

  • Gedlinske AM, Stephan CM, Mockler SRH, Laubscher KM, Laubenthal KS, Crockett CD, Zimmerman MB, Mathews KD. Motor outcome measures in patients with FKRP mutations: A longitudinal follow-up. Neurology. 2020 Oct 13;95(15):e2131-e2139. doi: 10.1212/WNL.0000000000010604. Epub 2020 Aug 6.

    PubMed 32764098

  • Brun BN, Mockler SR, Laubscher KM, Stephan CM, Collison JA, Zimmerman MB, Mathews KD. Childhood Activity on Progression in Limb Girdle Muscular Dystrophy 2I. J Child Neurol. 2017 Feb;32(2):204-209. doi: 10.1177/0883073816677680. Epub 2016 Nov 22.

    PubMed 27872178

  • Libell EM, Bowdler NC, Stephan CM, Zimmerman MB, Gedlinske AM, Mathews KD. The outcomes and experience of pregnancy in limb girdle muscular dystrophy type R9. Muscle Nerve. 2021 Jun;63(6):812-817. doi: 10.1002/mus.27184. Epub 2021 Feb 10.

    PubMed 33501999

  • Libell EM, Richardson JA, Lutz KL, Ng BY, Mockler SRH, Laubscher KM, Stephan CM, Zimmerman BM, Edens ER, Reinking BE, Mathews KD. Cardiomyopathy in limb girdle muscular dystrophy R9, FKRP related. Muscle Nerve. 2020 Nov;62(5):626-632. doi: 10.1002/mus.27052. Epub 2020 Sep 10.

    PubMed 32914449

  • Coffey LN, Stephan CM, Zimmerman MB, Decker CK, Mathews KD. Diagnostic delay in patients with FKRP-related muscular dystrophy. Neuromuscul Disord. 2021 Dec;31(12):1235-1240. doi: 10.1016/j.nmd.2021.08.013. Epub 2021 Sep 6.

    PubMed 34857438

  • Reelfs AM, Stephan CM, Mockler SRH, Laubscher KM, Zimmerman MB, Mathews KD. Pain interference and fatigue in limb-girdle muscular dystrophy R9. Neuromuscul Disord. 2023 Jun;33(6):523-530. doi: 10.1016/j.nmd.2023.05.005. Epub 2023 May 19.

    PubMed 37247532

Questions about this trial

What is this clinical trial studying?

An observational study of Muscular Dystrophy, run by Katherine Mathews at 1 site in United States.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 5 inclusion and 1 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: looking for participants now, as of the sponsor's last update on 30 Jul 2025. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

This study is still under way. Results are not available in the source record yet.

How can a doctor refer a patient or contact the research team?

Contact Carrie Stephan, R.N. M.A. ((319) 356-2673), or a site near the patient. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

10 meter walk (time frame: through study completion, an average of 1 yea). It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT00313677, which also lists 18 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 30 Jul 2025.

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