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  • Title: BHT-3009, a myelin basic protein-encoding plasmid for the treatment of multiple sclerosis.
    Author: Correale J, Fiol M.
    Journal: Curr Opin Mol Ther; 2009 Aug; 11(4):463-70. PubMed ID: 19649992.
    Abstract:
    Even though the etiology of multiple sclerosis (MS) remains largely unknown, research data support the hypothesis that autoimmunity plays a major role in disease development. Several disease-modifying agents have been approved for the treatment of MS; however, there is still a need for antigen-specific treatments that combine efficacy and safety. DNA vaccination represents a new therapeutic alternative in this respect. Preclinical studies in different models of autoimmunity have demonstrated that injection of plasmid DNA encoding a self-antigen in mice restores self-tolerance, leaving immunity against infectious and tumor antigens intact. Based on this evidence, the first DNA vaccine for MS has been created. Bayhill Therapeutic Inc's BHT-3009 encodes full-length, human myelin basic protein (MBP), and has recently been evaluated in a phase I/II and a phase II clinical trial. BHT-3009 was safe and well tolerated in both trials, inducing immune tolerance that extended beyond MBP to other myelin antigens. In addition, a reduction in the number of active lesions was observed, which was accompanied by a decrease in clinical relapse rates, particularly in patients with high immunological activity at baseline. BHT-3009 appears to be a promising new approach for the treatment of MS, although further clinical trials are warranted to confirm the early findings.
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