View clinical trials related to Leukoencephalopathies.
Filter by:The purpose of this study is to understand the course of rare genetic disorders that affect the brain. This data is being analyzed to gain a better understanding of the progression of the rare neurodegenerative disorders and the effects of interventions.
The Myelin Disorders Biorepository Project (MDBP) seeks to collect and analyze clinical data and biological samples from leukodystrophy patients worldwide to support ongoing and future research projects. The MDBP is one of the world's largest leukodystrophy biorepositories, having enrolled nearly 2,000 affected individuals since it was launched over a decade ago. Researchers working in the biorepository hope to use these materials to uncover new genetic etiologies for various leukodystrophies, develop biomarkers for use in future clinical trials, and better understand the natural history of these disorders. The knowledge gained from these efforts may help improve the diagnostic tools and treatment options available to patients in the future.
Retrospective medical chart review of HIV-infected patients diagnosed with progressive multifocal leukoencephalopathy
Leukodystrophies, and other heritable disorders of the white matter of the brain, were previously resistant to genetic characterization, largely due to the extreme genetic heterogeneity of molecular causes. While recent work has demonstrated that whole genome sequencing (WGS), has the potential to dramatically increase diagnostic efficiency, significant questions remain around the impact on downstream clinical management approaches versus standard diagnostic approaches.
Background: Progressive Multifocal Leukoencephalopathy (PML) is a brain infection in people with a weakened immune system. Researchers think polyoma virus specific T cells (PyVST) therapy can treat PML. The PyVST cells are made from blood cells of a healthy relative. They are grown in a lab to expand the virus-killing cells, then given to the person with PML. Objective: To test whether PyVST safely treats PML. Eligibility: - Adults ages 18 and older with PML - Healthy adults ages 18 and older who have: - Been screened under protocol 97-H-0041 - A sibling, parent, or child with PML and matching cells Design: - Participants will be screened with: - Medical history - Physical exam - Blood and urine tests - PML participants will also be screened with: - Cerebrospinal fluid removed by needle in the back. - MRI: A dye is injected in a vein. They lie on a table that slides into a cylinder. - Questionnaires Healthy participants will have apheresis: Blood flows through a needle in one arm into machine that separates blood cells needed for donation. The rest of the blood is returned by needle to the other arm. Some participants may have a central line placed in a vein instead. They can have apheresis up to 3 times, at least 28 days apart. Participants with PML will receive the PyVST cells by needle in the arm. They will stay in the hospital 1 week. They can do this up to 3 times, at least 28 days apart. After each infusion, they will have weekly visits for 1 month. Then they will have 4 visits over 1 year. Visits include repeats of screening tests.
The survival time and the number of long time survivors after radiotherapy in brain cancer patients have increased for the last decades. Therefore the topic of late-delayed neurotoxic effects of this therapy gains more and more importance. Among these side effects, the main and most frequent one is the leukoencephalopathy, a diffused and progressive damage of the white matter characterized by myelin loss, loss of axons and vascular lesions. The incidence rate assessment, as well as the occurrence time, is based on retrospective studies with low numbers of patients, but seems to reach 30 to 50 % of the patients according to the follow-up. The risk seems to be increased during the first two years after the radiotherapy, but persists for decades. To gain further insight in the radiation-induced leukoencephalopathy, the objective of this project is to study the onset and evolution of leukoencephalopathy in a 3-year prospective cohort of patients having undergone cerebral radiotherapy for glioma (stage 3-4), using specific cognitive tests, Magnetic Resonance Imagery (MRI) scans of the brain and predictive bio-markers of cognitive impairments.
Neurocognitive sequelae observed in preterm represent a major health problem for which there is no preventive treatment approved to date. These effects are the result of a multifactorial brain damage occurring in developing prenatal and perinatal period. Melatonin, the principal hormone secreted by the pineal gland has neuroprotective properties in various experimental animal models of perinatal brain damage level. This hormone readily crosses the placental barrier, its antenatal administration would have a neuroprotective effect in the case of preventive preterm birth before 28 weeks of amenorrhea. The objective of this study determine the dose of melatonin administered parenterally in prenatal maternal in preterm labor to reduce brain damage in the white matter detected by diffusion tensor imaging (DTI) with statistical spatial analysis (TBSS) to the theoretical term of 40 weeks in children born prematurely.
The prevalence of both Alzheimer's Disease (AD) and stroke doubles each decade over 65 years old. Both are major causes of dementia, currently estimated to affect 46 million people worldwide. The current costs globally are $818 billion. Additionally, in population studies elders over 65 years, "covert" cerebral small vessel disease appears on MRI scans as silent lacunar infarcts in 25% as Microbleeds in 10%, and as focal or diffuse 'incidental' white matter disease (WMD) in 95%. WMD is extensive in 20%, with a clinical threshold effect around 10cc2. Small vessel disease is even more common in dementia, often coexisting with AD and independently contributing to cognitive decline and progression to dementia. Longitudinal imaging using cerebral amyloid labeling opens a new opportunity to understand the additive/interactive effects of small vessel disease and AD. The design of this study includes recruitment of two cohorts, including Mild Cognitive Impairment (MCI) and/or early Alzheimer Disease subjects from memory clinics and subjects with strokes/TIA from stroke prevention clinics. Inclusion criteria include the presence of moderate/extensive white matter disease, eg. Fazekas score of 2 (with confluent peri-ventricular hyperintensities) or Fazekas score of 3, as determined by previous MR or CT, > 60 years of age, Mini-Mental Status Exam (MMSE) scores ≥ 20. Subjects will undergo 3T structural MRI (including T1, PD/T2, FLAIR, GRE, DTI, ASL, and resting state fMRI), glucose PET, amyloid PET (using AV-45 florbetapir) and neuropsychological testing, as well as blood sampling. Repeat MR and PET/CT imaging and neuropsychological testing will be conducted at 24 months. The follow up assessments can also be completed at either year 1 or year 3 or Year 4 depending on the availability of study participants. The imaging portion is designed to closely parallel the Alzheimer's Disease Neuroimaging Initiative (ADNI) in order to benefit from the availability of both cognitively normal controls (NC), MCI and Alzheimer's disease subjects with minimal WMD.
This single-institution, phase II study is designed to test the ability to achieve donor hematopoietic engraftment while maintaining low rates of transplant-related mortality (TRM) using busulfan- and fludarabine-based conditioning regimens with busulfan therapeutic drug monitoring (TDM) for patients with various inherited metabolic disorders (IMD) and severe osteopetrosis (OP).
The primary aims of this randomized controlled trial are to evaluate efficacy potential of SPEEDI at enhancing reaching and play based problem solving compared to infants receiving usual care.