Investigations in multiple sclerosis patients with coexistent autoimmune thyroid disease

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Multiple sclerosis (MS) is a common chronic neurological disease affecting over one million people around the world. MS is generally thought to be an autoimmune disease, in which a person's own immune cells start to attack components of the brain and spinal cord. However, it is thought that the same components are not attacked in all patients, and that the pathway that leads to MS varies from one person to another. Therefore, in order to develop successful treatment strategies for MS, it will be necessary to look for patterns in the clinical symptoms and signs and other features of a person's MS that may give clues as to which particular pathway is leading to disease in that person. Some people who develop MS also develop other autoimmune diseases, or have these other diseases before they develop MS, or have other family members who have other autoimmune diseases. We have recently found that people who have the same combination of coexistent MS and autoimmune thyroid disease (AITD) show similar clinical signs of MS, and tend to have damage (lesions) to the same areas of their nervous system. This suggests that these people may have the same underlying pathways leading to the development of MS, and that they may be a very informative group in which to look for immune or genetic abnormalities that might explain why they develop MS. This project will investigate people who have both MS and AITD and other members of their families to see if we can work out what the links are between having the same combination of autoimmune diseases and developing lesions in particular parts of the nervous system. It will provide information on the pathways that lead to the development of MS, and information obtained from this study may eventually be of use in developing more specific therapeutic agents, by tailoring therapies to specific people with MS, depending on the clinical and immunological profile of that person.