X-linked Myotubular MyopathyMTMESNCT01840657
Myotubular Myopathy Event Study
An observational study of X-linked Myotubular Myopathy, run by Cure CMD at 1 site in United States.
Trial summary
X-Linked myotubular myopathy (XLMTM), a form of centronuclear myopathy (CNM) is the result of a mutation in the MTM1 (myotubularin) gene which leads to altered myotubularin. Myotubularin is essential for optimum muscle function. Read more about this study
- Who is it for?
- Any age, men only
- Conditions the study is for
- X-linked Myotubular Myopathy
- How many people
- 33 participants
- Where
- 1 siteUnited States
- Study dates
- Apr 2013to Oct 2015
- Phase
- Observational
- Are there results?
- None posted in the registry
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
- Men only
- No healthy volunteers
- Child, Adult, Older adult
Study population: Participants for the MTM Event study will be recruited from 2 sources: * the Centronculear Myopathy Natural History Study and * the Congenital Muscle Disease International Registry (CMDIR)
Who may be able to join
- males with a confirmed MTM1 mutation OR
- males with a muscle biopsy consistent with myotubular myopathy AND family history consistent with X-linked inheritance AND
- English-speaking parent/guardian of a living male child or a decisionally impaired adult OR English-speaking affected male over 18 years of age who can access telephone
- signed study consent
- enrolled in the Congenital Muscle Disease International Registry (CMDIR)
Who cannot join
- males with only a clinical diagnosis of XLMTM but without family history of XLMTM
- an affected male who has a genetically confirmed form of centronuclear myopathy (CNM) that is not caused by a mutation in the MTM1 gene
- females with MTM1 due to the limited number of females affected and the variability of clinical presentation
Trial locations and contacts
1 site in 1 country.
About this study
Official title: Prospective Study of Adverse Event Rates in Males With X-Linked Myotubular Myopathy
X-Linked myotubular myopathy (XLMTM), a form of centronuclear myopathy (CNM) is the result of a mutation in the MTM1 (myotubularin) gene which leads to altered myotubularin. Myotubularin is essential for optimum muscle function. To date, over 100 mutations have been described resulting in a range of disease onset and symptom severity. The early onset form presents with neonatal hypotonia, muscle weakness, respiratory distress and an ongoing requirement for continuous ventilatory support with the inability to maintain a sitting position once placed. Males with both later onset and milder symptoms usually do not require ongoing ventilatory support, achieve a higher maximal motor function with ability to sit when placed and even walk, and have improved survival rates. Males with XLMTM may experience complications (events) at birth and throughout their lifetime. The goal of the study is to identify the number of events over twelve months in males with genetically confirmed XLMTM. Parents or affected individuals over the age of 18 years who are able to access telephone will provide answers to an established event survey to evaluate the frequency and types of events. Emergency department, hospital admissions and mortality will be confirmed by obtaining medical reports.
The investigators hypothesize that there will be no association between the frequency of events and markers of clinical severity including the need for ventilatory support at birth, current level of ventilatory support (no support, support less than 12 hours, support more than 12 hours) and current motor function (walking, sitting without support, inability to sit without support).
- Conditions
- X-linked Myotubular Myopathy
- Keywords
- CMDIR (Congenital Muscle Disease International Registry), X-linked myotubular myopathy, centronuclear myopathy, myotubularin, MTM1 gene, mutation, survival, adverse event, disease complication, hospital admission, emergency room visit, motor function, respiratory function, natural history study
- Medical subject headings
- Myopathies, Structural, Congenital, Respiratory Aspiration
What is being measured
The primary outcome is the main question the study is designed to answer.
Survey of a defined set of events
Changes in care needed, breathing support, motor ability, medications and medical care, nutrition/weight management, communication/vision/learning/behavior, and frequency of outpatient/hospital/ER visits are recorded by a monthly telephone survey.
Measured: 12 months
Frequency of a predefined set of events related to ventilatory status
To analyze the strength of the association between the frequency of events surveyed and 1) duration of ventilatory support directly after birth and 2) current need for ventilatory support.
Measured: 12 months
Frequency of a predefined set of events related to current motor function
To analyze the strength of the association between the frequency of events surveyed and current motor function
Measured: 12 months
Secondary outcomes (2)
Association between event frequency and genotype
To determine the strength of the association between the frequency of the events surveyed and the affected individual's genotype.
Measured: 12 months
Association between event rate and season
To analyze event rates with respect to two seasonal clusters, October through March and April through September.
Measured: 12 months
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted26 Apr 2013 (estimated)
- Study startApr 2013
- Primary completionOct 2015
- Study completionOct 2015
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (21)Papers the sponsor has linked to this study.
- Other trials for X-linked Myotubular MyopathyStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
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
- Case only
- Time perspective
- Prospective
- Enrolment
- 33 participants (actual)
Sponsor and investigators
- Lead sponsor
- Cure CMD
- Sponsor type
- University, hospital or other
- Collaborators
- Congenital Muscle Disease International Registr, University of Michigan
- Responsible party
- Sponsor
- Investigators
- Joseph Hornyak, MD, PhD, Principal investigator, University of MichiganAnne Rutkowski, MD, Principal investigator, Cure CMDJames Dowling, MD, PhD, Principal investigator, University of Michigan
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT01840657
- Sponsor's protocol ID
- CMDIR-002
- Acronym
- MTMES
- Status last verified
- Jan 2017
- First submitted
- 18 Apr 2013
- Last updated
- 7 Mar 2018
- Results posted
- No
- Data monitoring committee
- No
Publications
Al-Qusairi L, Laporte J. T-tubule biogenesis and triad formation in skeletal muscle and implication in human diseases. Skelet Muscle. 2011 Jul 13;1(1):26. doi: 10.1186/2044-5040-1-26.
PubMed 21797990Al-Qusairi L, Weiss N, Toussaint A, Berbey C, Messaddeq N, Kretz C, Sanoudou D, Beggs AH, Allard B, Mandel JL, Laporte J, Jacquemond V, Buj-Bello A. T-tubule disorganization and defective excitation-contraction coupling in muscle fibers lacking myotubularin lipid phosphatase. Proc Natl Acad Sci U S A. 2009 Nov 3;106(44):18763-8. doi: 10.1073/pnas.0900705106. Epub 2009 Oct 21.
PubMed 19846786Beggs AH, Bohm J, Snead E, Kozlowski M, Maurer M, Minor K, Childers MK, Taylor SM, Hitte C, Mickelson JR, Guo LT, Mizisin AP, Buj-Bello A, Tiret L, Laporte J, Shelton GD. MTM1 mutation associated with X-linked myotubular myopathy in Labrador Retrievers. Proc Natl Acad Sci U S A. 2010 Aug 17;107(33):14697-702. doi: 10.1073/pnas.1003677107. Epub 2010 Aug 3.
PubMed 20682747Biancalana V, Caron O, Gallati S, Baas F, Kress W, Novelli G, D'Apice MR, Lagier-Tourenne C, Buj-Bello A, Romero NB, Mandel JL. Characterisation of mutations in 77 patients with X-linked myotubular myopathy, including a family with a very mild phenotype. Hum Genet. 2003 Feb;112(2):135-42. doi: 10.1007/s00439-002-0869-1. Epub 2002 Nov 28.
PubMed 12522554Buj-Bello A, Biancalana V, Moutou C, Laporte J, Mandel JL. Identification of novel mutations in the MTM1 gene causing severe and mild forms of X-linked myotubular myopathy. Hum Mutat. 1999;14(4):320-5. doi: 10.1002/(SICI)1098-1004(199910)14:43.0.CO;2-O.
PubMed 10502779Buj-Bello A, Fougerousse F, Schwab Y, Messaddeq N, Spehner D, Pierson CR, Durand M, Kretz C, Danos O, Douar AM, Beggs AH, Schultz P, Montus M, Denefle P, Mandel JL. AAV-mediated intramuscular delivery of myotubularin corrects the myotubular myopathy phenotype in targeted murine muscle and suggests a function in plasma membrane homeostasis. Hum Mol Genet. 2008 Jul 15;17(14):2132-43. doi: 10.1093/hmg/ddn112. Epub 2008 Apr 22.
PubMed 18434328Cao C, Backer JM, Laporte J, Bedrick EJ, Wandinger-Ness A. Sequential actions of myotubularin lipid phosphatases regulate endosomal PI(3)P and growth factor receptor trafficking. Mol Biol Cell. 2008 Aug;19(8):3334-46. doi: 10.1091/mbc.e08-04-0367. Epub 2008 Jun 4.
PubMed 18524850Dowling JJ, Lawlor MW, Das S. X-Linked Myotubular Myopathy. 2002 Feb 25 [updated 2018 Aug 23]. In: Adam MP, Bick S, Mirzaa GM, Wallace SE, Amemiya A, editors. GeneReviews(R) [Internet]. Seattle (WA): University of Washington, Seattle; 1993-2026. Available from http://www.ncbi.nlm.nih.gov/books/NBK1432/
PubMed 20301605de Gouyon BM, Zhao W, Laporte J, Mandel JL, Metzenberg A, Herman GE. Characterization of mutations in the myotubularin gene in twenty six patients with X-linked myotubular myopathy. Hum Mol Genet. 1997 Sep;6(9):1499-504. doi: 10.1093/hmg/6.9.1499.
PubMed 9285787Dowling JJ, Gibbs EM, Feldman EL. Membrane traffic and muscle: lessons from human disease. Traffic. 2008 Jul;9(7):1035-43. doi: 10.1111/j.1600-0854.2008.00716.x. Epub 2008 Feb 4.
PubMed 18266915Dowling JJ, Vreede AP, Low SE, Gibbs EM, Kuwada JY, Bonnemann CG, Feldman EL. Loss of myotubularin function results in T-tubule disorganization in zebrafish and human myotubular myopathy. PLoS Genet. 2009 Feb;5(2):e1000372. doi: 10.1371/journal.pgen.1000372. Epub 2009 Feb 6.
PubMed 19197364Herman GE, Finegold M, Zhao W, de Gouyon B, Metzenberg A. Medical complications in long-term survivors with X-linked myotubular myopathy. J Pediatr. 1999 Feb;134(2):206-14. doi: 10.1016/s0022-3476(99)70417-8.
PubMed 9931531Herman GE, Kopacz K, Zhao W, Mills PL, Metzenberg A, Das S. Characterization of mutations in fifty North American patients with X-linked myotubular myopathy. Hum Mutat. 2002 Feb;19(2):114-21. doi: 10.1002/humu.10033.
PubMed 11793470Hoffjan S, Thiels C, Vorgerd M, Neuen-Jacob E, Epplen JT, Kress W. Extreme phenotypic variability in a German family with X-linked myotubular myopathy associated with E404K mutation in MTM1. Neuromuscul Disord. 2006 Nov;16(11):749-53. doi: 10.1016/j.nmd.2006.07.020. Epub 2006 Sep 26.
PubMed 17005396Joseph M, Pai GS, Holden KR, Herman G. X-linked myotubular myopathy: clinical observations in ten additional cases. Am J Med Genet. 1995 Nov 6;59(2):168-73. doi: 10.1002/ajmg.1320590211.
PubMed 8588581
Study at a glance
From the registry record, last updated by the sponsor on 7 Mar 2018. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Prospective Study of Adverse Event Rates in Males With X-Linked Myotubular Myopathy
- ClinicalTrials.gov ID
- NCT01840657
- Acronym / sponsor ID
- MTMES / CMDIR-002
- Conditions
- X-linked Myotubular Myopathy
- Keywords
- CMDIR (Congenital Muscle Disease International Registry), X-linked myotubular myopathy, centronuclear myopathy, myotubularin, MTM1 gene, mutation, survival, adverse event
- Study type
- Observational
- Recruitment status
- Completed
- Enrolment
- 33 participants (actual)
- Lead sponsor
- Cure CMDUniversity, hospital or other
- Collaborators
- Congenital Muscle Disease International Registr, University of Michigan
- Study start
- Apr 2013 (actual)
- Primary completion
- Oct 2015 (actual)
- Study completion
- Oct 2015 (actual)
- First posted
- 26 Apr 2013 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
X-Linked myotubular myopathy (XLMTM), a form of centronuclear myopathy (CNM) is the result of a mutation in the MTM1 (myotubularin) gene which leads to altered myotubularin. Myotubularin is essential for optimum muscle function. To date, over 100 mutations have been described resulting in a range of disease onset and symptom severity. The early onset form presents with neonatal hypotonia, muscle weakness, respiratory distress and an ongoing requirement for continuous ventilatory support with the inability to maintain a sitting position once placed. Males with both later onset and milder symptoms usually do not require ongoing ventilatory support, achieve a higher maximal motor function with ability to sit when placed and even walk, and have improved survival rates. Males with XLMTM may experience complications (events) at birth and throughout their lifetime. The goal of the study is to identify the number of events over twelve months in males with genetically confirmed XLMTM. Parents or affected individuals over the age of 18 years who are able to access telephone will provide answers to an established event survey to evaluate the frequency and types of events. Emergency department, hospital admissions and mortality will be confirmed by obtaining medical reports.
The investigators hypothesize that there will be no association between the frequency of events and markers of clinical severity including the need for ventilatory support at birth, current level of ventilatory support (no support, support less than 12 hours, support more than 12 hours) and current motor function (walking, sitting without support, inability to sit without support).
Study design
- Observational model
- Case only
- Time perspective
- Prospective
Who may qualify
- Sex
- Male only
- Healthy volunteers
- Not accepted
- Age groups
- Child, Adult, Older adult
- Study population
- Participants for the MTM Event study will be recruited from 2 sources: * the Centronculear Myopathy Natural History Study and * the Congenital Muscle Disease International Registry (CMDIR)
Key inclusion criteria (5 listed)
- males with a confirmed MTM1 mutation OR
- males with a muscle biopsy consistent with myotubular myopathy AND family history consistent with X-linked inheritance AND
- English-speaking parent/guardian of a living male child or a decisionally impaired adult OR English-speaking affected male over 18 years of age who can access telephone
- signed study consent
- enrolled in the Congenital Muscle Disease International Registry (CMDIR)
Key exclusion criteria (3 listed)
- males with only a clinical diagnosis of XLMTM but without family history of XLMTM
- an affected male who has a genetically confirmed form of centronuclear myopathy (CNM) that is not caused by a mutation in the MTM1 gene
- females with MTM1 due to the limited number of females affected and the variability of clinical presentation
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Primary outcome
Survey of a defined set of events
Time frame: 12 months
Changes in care needed, breathing support, motor ability, medications and medical care, nutrition/weight management, communication/vision/learning/behavior, and frequency of outpatient/hospital/ER visits are recorded by a monthly telephone survey.
Frequency of a predefined set of events related to ventilatory status
Time frame: 12 months
To analyze the strength of the association between the frequency of events surveyed and 1) duration of ventilatory support directly after birth and 2) current need for ventilatory support.
Frequency of a predefined set of events related to current motor function
Time frame: 12 months
To analyze the strength of the association between the frequency of events surveyed and current motor function
2 secondary outcomes
Association between event frequency and genotype
Time frame: 12 months
Association between event rate and season
Time frame: 12 months
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 7 Mar 2018.
- Background: PubMed 21797990Al-Qusairi L, Laporte J. T-tubule biogenesis and triad formation in skeletal muscle and implication in human diseases. Skelet Muscle. 2011 Jul 13;1(1):26. doi: 10.1186/2044-5040-1-26.
- Background: PubMed 19846786Al-Qusairi L, Weiss N, Toussaint A, Berbey C, Messaddeq N, Kretz C, Sanoudou D, Beggs AH, Allard B, Mandel JL, Laporte J, Jacquemond V, Buj-Bello A. T-tubule disorganization and defective excitation-contraction coupling in muscle fibers lacking myotubularin lipid phosphatase. Proc Natl Acad Sci U S A. 2009 Nov 3;106(44):18763-8. doi: 10.1073/pnas.0900705106. Epub 2009 Oct 21.
- Background: PubMed 20682747Beggs AH, Bohm J, Snead E, Kozlowski M, Maurer M, Minor K, Childers MK, Taylor SM, Hitte C, Mickelson JR, Guo LT, Mizisin AP, Buj-Bello A, Tiret L, Laporte J, Shelton GD. MTM1 mutation associated with X-linked myotubular myopathy in Labrador Retrievers. Proc Natl Acad Sci U S A. 2010 Aug 17;107(33):14697-702. doi: 10.1073/pnas.1003677107. Epub 2010 Aug 3.
- Background: PubMed 12522554Biancalana V, Caron O, Gallati S, Baas F, Kress W, Novelli G, D'Apice MR, Lagier-Tourenne C, Buj-Bello A, Romero NB, Mandel JL. Characterisation of mutations in 77 patients with X-linked myotubular myopathy, including a family with a very mild phenotype. Hum Genet. 2003 Feb;112(2):135-42. doi: 10.1007/s00439-002-0869-1. Epub 2002 Nov 28.
- Background: PubMed 10502779Buj-Bello A, Biancalana V, Moutou C, Laporte J, Mandel JL. Identification of novel mutations in the MTM1 gene causing severe and mild forms of X-linked myotubular myopathy. Hum Mutat. 1999;14(4):320-5. doi: 10.1002/(SICI)1098-1004(199910)14:43.0.CO;2-O.
- Background: PubMed 18434328Buj-Bello A, Fougerousse F, Schwab Y, Messaddeq N, Spehner D, Pierson CR, Durand M, Kretz C, Danos O, Douar AM, Beggs AH, Schultz P, Montus M, Denefle P, Mandel JL. AAV-mediated intramuscular delivery of myotubularin corrects the myotubular myopathy phenotype in targeted murine muscle and suggests a function in plasma membrane homeostasis. Hum Mol Genet. 2008 Jul 15;17(14):2132-43. doi: 10.1093/hmg/ddn112. Epub 2008 Apr 22.
- Background: PubMed 18524850Cao C, Backer JM, Laporte J, Bedrick EJ, Wandinger-Ness A. Sequential actions of myotubularin lipid phosphatases regulate endosomal PI(3)P and growth factor receptor trafficking. Mol Biol Cell. 2008 Aug;19(8):3334-46. doi: 10.1091/mbc.e08-04-0367. Epub 2008 Jun 4.
- Background: PubMed 20301605Dowling JJ, Lawlor MW, Das S. X-Linked Myotubular Myopathy. 2002 Feb 25 [updated 2018 Aug 23]. In: Adam MP, Bick S, Mirzaa GM, Wallace SE, Amemiya A, editors. GeneReviews(R) [Internet]. Seattle (WA): University of Washington, Seattle; 1993-2026. Available from http://www.ncbi.nlm.nih.gov/books/NBK1432/
- Background: PubMed 9285787de Gouyon BM, Zhao W, Laporte J, Mandel JL, Metzenberg A, Herman GE. Characterization of mutations in the myotubularin gene in twenty six patients with X-linked myotubular myopathy. Hum Mol Genet. 1997 Sep;6(9):1499-504. doi: 10.1093/hmg/6.9.1499.
- Background: PubMed 18266915Dowling JJ, Gibbs EM, Feldman EL. Membrane traffic and muscle: lessons from human disease. Traffic. 2008 Jul;9(7):1035-43. doi: 10.1111/j.1600-0854.2008.00716.x. Epub 2008 Feb 4.
- Background: PubMed 19197364Dowling JJ, Vreede AP, Low SE, Gibbs EM, Kuwada JY, Bonnemann CG, Feldman EL. Loss of myotubularin function results in T-tubule disorganization in zebrafish and human myotubular myopathy. PLoS Genet. 2009 Feb;5(2):e1000372. doi: 10.1371/journal.pgen.1000372. Epub 2009 Feb 6.
- Background: PubMed 9931531Herman GE, Finegold M, Zhao W, de Gouyon B, Metzenberg A. Medical complications in long-term survivors with X-linked myotubular myopathy. J Pediatr. 1999 Feb;134(2):206-14. doi: 10.1016/s0022-3476(99)70417-8.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Joseph Hornyak, MD, PhD principal investigator
University of Michigan
Anne Rutkowski, MD principal investigator
Cure CMD
James Dowling, MD, PhD principal investigator
University of Michigan
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of X-linked Myotubular Myopathy, run by Cure CMD 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 3 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: finished, as of the sponsor's last update on 7 Mar 2018. 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?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Survey of a defined set of events (time frame: 12 months). The study lists 3 primary outcomes in all. 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 NCT01840657, which also lists 21 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 7 Mar 2018.