• Reinhard Hohlfeld, Klaus Dornmair, Edgar Meinl, and Hartmut Wekerle.
• Institute of Clinical Neuroimmunology, Biomedical Center and University Hospital, Campus Martinsried-Grosshadern, Ludwig-Maximilians University, Munich, Germany; Munich Cluster of Systems Neurology (SyNergy), Munich, Germany. Electronic address: reinhard.hohlfeld@med.uni-muenchen.de.
• Lancet Neurol. 2016 Feb 1; 15 (2): 198-209.

AbstractIdentification of the target antigens of pathogenic antibodies and T cells is of fundamental importance for understanding the pathogenesis of multiple sclerosis, and for the development of personalised treatments for the disease. Myelin-specific CD4+ T cells emerged long ago as a key player in animal models of multiple sclerosis. Taking a forward-translational approach, autoreactive CD4+ T cells have been studied extensively in patients with multiple sclerosis, and there is evidence, but as yet no direct proof, that autoreactive CD4+ T cells are a key player in the pathogenesis of the disorder. Several therapies that selectively target myelin-specific CD4+ T cells have been investigated in clinical trials up to phase 3. So far, however, none of these (mostly underpowered) therapeutic trials have provided definitive evidence of clinical efficacy. One major obstacle to personalised, highly selective immunotherapy is the absence of standardised and reliable assays to assess antigen-specific human T-cell responses. Such assays would be essential for stratification of patients with multiple sclerosis according to their individual target antigens.Copyright © 2016 Elsevier Ltd. All rights reserved.

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