Pathological Basis of MRI Signal Changes in Multiple Sclerosis

Objective. The goal of this protocol is to understand how the pathology of multiple sclerosis (MS) relates to its evolution over time as observed through neuroradiological, clinical, and biological data collection in vivo. Study population. This study will enroll up to 200 individuals with MS, targeting 100 study completers, across various ages and stages of the disease, as well as up to 50 appropriate disease and non-neurological control participants, for a total of 250 participants. Design. This is a longitudinal cohort study in which participants will be seen approximately annually at the NIH Clinical Center. Most visits will extend over several days. Participants will receive ongoing care by their outside clinician. They may also concurrently participate in additional research protocols at the NIH or elsewhere, and data may be shared between those protocols and the current one. At the time of death, the central nervous system (CNS) (brain, spinal cord, retinas, and cerebrospinal fluid), as well as lymph nodes and possibly other lymphoid tissue, will be harvested. This is a multi-site study with Johns Hopkins University. Some analysis of identifiable data will be conducted at Johns Hopkins University JHU under a reliance agreement. Patients will not be consented to the study or participate in study interventions/procedures at JHU. Outcome measures. Outcome measures include data derived from magnetic resonance imaging (MRI) of the brain and spinal cord, optical coherence tomography (OCT) of the retinas, clinical examination, and disability scales; radiological and pathological examination of CNS tissue; and the correlation between in vivo and postmortem measures. Particular attention will be paid to the extent to which longitudinal in vivo changes predict postmortem findings.