Biomarker for Metachromatic Leukodystrophy (BioMeta) Disease (BioMeta)
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|ClinicalTrials.gov Identifier: NCT01536327|
Recruitment Status : Active, not recruiting
First Posted : February 22, 2012
Last Update Posted : April 3, 2020
|Condition or disease|
|Peripheral Neuropathy Muscle Weakness|
Metachromatic Leukodystrophy Disease (MLD) is one of a group of genetic disorders called the leukodystrophies. These diseases impair the growth or development of the myelin sheath, the fatty covering that acts as an insulator around nerve fibers. Myelin, which lends its colour to the white matter of the brain, is a complex substance made up of varying lipids (75%) and proteins (25%). The leukodystrophies are caused by genetic defects in myelin production or metabolization of the compounds of the myelin sheath. Each of the leukodystrophies is the result of a defect in the gene that controls one (and only one) of the enzymes responsible for creating or degrading a part of the myelin. MLD is caused by a deficiency of the enzyme arylsulfatase A. MLD is one of several lipid storage diseases, which results in the toxic build-up of fatty materials (lipids) in cells in the nervous system, liver, and kidneys. There are three forms of MLD: late infantile, juvenile, and adult. Onset of the late infantile form (the most common MLD) is typically between 12 and 20 months following birth. Affected children have difficulty walking after the first year of life. Symptoms include muscle wasting and weakness, muscle rigidity, developmental delays, progressive loss of vision leading to blindness, convulsions, impaired swallowing, paralysis, and dementia. Children may become comatose. Most children with this form of MLD die by age 5. The juvenile form of MLD (between 3-10 years of age) usually begins with impaired school performance, mental deterioration, and dementia and then develop symptoms similar to the infantile form but with slower progression. The adult form commonly begins after age 16 as a psychiatric dis-order or progressive dementia. Symptoms include impaired concentration, ataxia, seizures, dementia, and tremor. Due to consanguinity autosomalrecessive disorders such as MLD have higher prevalence in Arabian countries.
New methods, like mass-spectrometry give a good chance to characterize specific metabolic alterations in the blood (plasma) of affected patients that allow to diagnose in the future the disease earlier, with a higher sensitivity and specificity. In a pilotstudy glycosylsphingosin-sulfatid has been determined as a sensitive and specific biomarker. This is a metabolic product likely to be involved in the pathophysiology of the disease. Therefore it is the goal of the study to validate this new biochemical marker from the blood (plasma) of the affected patients helping to benefit other patients by an early diagnose and thereby with an earlier treatment. Examining blood samples will allow to determine whether measurement of the identified marker lyso-Gb1-Sulfatid is feasible in blood samples and will further promote early detection of MLD.
Though MLD is a pan-ethnic disorder, the prevalence of this autosomal-recessive disorder is elevated in countries with a higher frequency of consanguinity. Therefore, we estimate that every 400th newborn in Arabian countries may be eligible for inclusion due to high-grade suspicion of MLD, while approximately every 2000th newborn in a non-Arabian country may be eligible.
|Study Type :||Observational|
|Estimated Enrollment :||1000 participants|
|Official Title:||Biomarker for Metachromatic Leukodystrophy Disease AN INTERNATIONAL, MULTICENTER, EPIDEMIOLOGICAL PROTOCOL|
|Actual Study Start Date :||August 20, 2018|
|Estimated Primary Completion Date :||August 2021|
|Estimated Study Completion Date :||August 2021|
Patients with Metachromatic Leukodystrophy disease or profound suspicion for Metachromatic Leukodystrophy disease
- Development of a new MS-based biomarker for the early and sensitive diagnosis of metachromatic leukodystrophy disease from the blood [ Time Frame: 24 month ]New methods, like mass-spectrometry give a good chance to characterize specific metabolic alterations in the blood of affected patients that allow diagnosing in the future the disease earlier, with a higher sensitivity and specificity.
- Testing for clinical robustness, specificity and long-term stability of the biomarker [ Time Frame: 36 months ]the goal of the study to identify and validate a new biochemical marker from the blood of the affected patients helping to benefit other patients by an early diagnose and thereby with an earlier treatment.
Biospecimen Retention: Samples With DNA
For the development of the new biomarkers using the technique of mass-spectometry, 10 ml EDTA blood sample and/or a dry blood spot filter card-blood sample will be taken from the patient. To prove the correct Metachromatic Leukodystrophy diagnosis in those patients where up to the enrolment in the study no genetic testing has been done, sequencing of Metachromatic Leukodystrophy will be done as routine diagnostic.
The analyses will be done at the:
Centogene AG Am Strande 7 18055 Rostock Germany
To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT01536327
|Children's Hospital, Faculty of Medicine, Ain Shams University|
|Cairo, Egypt, 55131|
|Rostock, Germany, 18055|
|Amrita Institute of Medical Sciences & Research Centre|
|Cochin, Kerala, India, 682041|
|Navi Mumbai Institute of Research In Mental And Neurological Handicap (NIRMAN)|
|Mumbai, India, 400705|
|Lady Ridgeway Hospital for Children|
|Colombo 8, Sri Lanka, 00800c|
|Principal Investigator:||Arndt Rolfs, Prof.||Centogene AG Rostock|