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This is a prospective, multicentric, observational study with a 2 years recruitment period. The purpose of the study is to observe the multiple sclerosis (MS) progression of subjects since their first episode of neurological event and secondly, to determine status of anti-AQP4 immunoglobulin (IgG) antibody in MS subjects.
Multiple sclerosis is chronic, inflammatory disease of the central nervous system (CNS) characterised by areas of demyelination, or plaques, in the CNS. In 85% of subjects who later develop MS, clinical onset is with an acute or subacute episode of neurological disturbance due to a single white-matter lesion (e.g. optic neuritis, or an isolated brainstem or partial spinal-cord syndrome). This presentation is known as a Clinically Isolated Syndrome (CIS). Because a CIS is typically the earliest clinical expression of MS, research on subjects with a CIS may provide new insights into early pathological changes and pathogenetic mechanisms that might affect the course of the disorder.
In the group of subjects with optic-spinal MS (OSMS), the main lesions are typically confined to the optic nerve and spinal cord. In Asians, OSMS has similar features to the relapsing remitting form of neuromyelitis optica (NMO) seen in Westerners. It is still a matter of debate whether NMO represents a disease entity in itself or whether it is a subform of MS. Early differentiation of NMO from MS is highly desirable, as treatment options and prognoses differ widely. Recently, a new serum autoantibody (NMO-IgG) has been detected in NMO subjects. The binding sites of this autoantibody were reported to colocalize with aquaporin 4 (AQP4) water channels. Optic-spinal MS is sometime suggested to be NMO based on the frequent detection of the anti-AQP4 IgG antibody. In Taiwan, study has shown that 56% of MS subjects were of the optic-spinal type.
The study is designed firstly, to observe the MS progression of subjects since their first episode of neurological event and secondly, to determine status of anti-AQP4 IgG antibody in MS subjects.
- To describe the progression of subjects who have experienced a CIS to MS over a 2-year period
- To assess the relationship between CIS and MS including optic-spinal MS (OSMS)
- To determine the status of anti-AQP4 IgG antibody in subjects who convert to MS
Each subject shall be followed up for 2 years after enrolment. At baseline, routine examinations shall be performed to confirm subject's neurological episode. After the baseline visit, the subject shall be instructed to return for further examination if he/she experiences a relapse. During the follow-up examinations, the treating physician shall determine whether the subject fulfil the diagnostic criteria for MS.
If subject is being diagnosed with MS, he/she shall be considered as reaching the end of his/her study participation. Further management of the MS condition will be at the discretion of the treating physician. During 2-year follow-up period, telephone calls to the subject shall be made quarterly to assess subject's neurological and/or visual status and to remind subject that he/she need to return for evaluation in the event of a relapse. All data will be collected using a standardised case report form (CRF).
Observational Model: Cohort, Time Perspective: Prospective
Kaohsiung Medical University, Chung-Ho Memorial Hospital
Published on BioPortfolio: 2014-08-27T03:14:06-0400
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An autoimmune disorder mainly affecting young adults and characterized by destruction of myelin in the central nervous system. Pathologic findings include multiple sharply demarcated areas of demyelination throughout the white matter of the central nervous system. Clinical manifestations include visual loss, extra-ocular movement disorders, paresthesias, loss of sensation, weakness, dysarthria, spasticity, ataxia, and bladder dysfunction. The usual pattern is one of recurrent attacks followed by partial recovery (see MULTIPLE SCLEROSIS, RELAPSING-REMITTING), but acute fulminating and chronic progressive forms (see MULTIPLE SCLEROSIS, CHRONIC PROGRESSIVE) also occur. (Adams et al., Principles of Neurology, 6th ed, p903)
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