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  • Title: Failed, interrupted and inconclusive trials on relapsing multiple sclerosis treatment: update 2010-2015.
    Author: Pfeuffer S, Ruck T, Kleinschnitz C, Wiendl H, Meuth SG.
    Journal: Expert Rev Neurother; 2016 Jun; 16(6):689-700. PubMed ID: 27058174.
    Abstract:
    The treatment of multiple sclerosis (MS) remains challenging despite the great efforts made in the development of novel therapies. Driven by the growing knowledge of the immunopathogenesis of the disease, a plethora of new pharmacological agents have been developed and tested in clinical trials. However, the therapeutic advantages and positive clinical trials of some of these agents are outweighed by studies of promising agents that either failed due to negative or inconclusive results or had to be withdrawn because of serious unexpected adverse events. Most failed clinical trials did not lack a well-considered pathophysiological rationale, but concepts from experimental models were proven wrong in humans. Lessons learned from these discrepancies help to optimize future study design and, potentially more importantly, provide further insight into the immunopathogenesis of MS. Here, we summarize trials on MS treatments since 2010 that failed or were interrupted, identifying potential underlying reasons for failure or inconclusiveness.
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