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Biogen Idec Announces Enrollment of First Patient in Oral Therapy Combination Trial in Multiple Sclerosis

(Posted By: Josi Creek)

Biogen Idec today announced enrollment of the first patient in a multicenter Phase II clinical trial designed to evaluate its investigational oral therapy BG-12 (dimethyl fumarate, tecfidera) in combination with commonly used first-line treatments in patients with relapsing-remitting multiple sclerosis (RRMS). The trial, called EXPLORE, will evaluate the safety and tolerability of BG-12 when administered with beta interferons (IFNB) or glatiramer acetate (GA) to patients who continue to have evidence of disease activity despite receiving consistent monotherapy for at least a year ,

"An ongoing treatment challenge in MS is that many patients continue to experience disease activity despite being on therapy," said Alfred Sandrock, M.D., Ph.D., Senior Vice President of Neurology Research and Development at Biogen Idec. "The goal of the EXPLORE trial is to evaluate whether BG-12 may be a safe and effective agent to use in combination with other MS therapies, an important consideration for patients for whom new treatment strategies are needed."
BG-12 is the first compound in trials for the treatment of MS that has been shown to activate the Nrf2 transcriptional pathway. Experimentally, the Nrf2 pathway has demonstrated neuroprotective and anti-inflammatory properties. Activation of this pathway in MS patients may potentially prevent further cell damage and tissue loss caused by the disease. Preclinical studies have shown that activation of the Nrf2 pathway defends against oxidative-stress induced neuronal death, protects the blood-brain barrier and supports maintenance of myelin integrity in the central nervous system. Central nervous system inflammation and damage may trigger the symptoms common in RRMS such as fatigue, cognitive deterioration and physical disability.
Data from the Phase IIb study in RRMS, combined with experimental data showing BG-12's ability to activate the Nrf2 pathway, continue to support its evaluation as a monotherapy in two extensive ongoing Phase III MS studies, DEFINE and CONFIRM, which are fully enrolled. These data also support its further investigation as a combination therapy in EXPLORE.
"The MS community is eager for new treatment options for this debilitating disease," said Robert Fox, M.D., Staff Neurologist and Medical Director at the Cleveland Clinic Mellen Center for Multiple Sclerosis Treatment and Research. "BG-12 may offer patients an additional treatment strategy. Its potential to both reduce inflammation and promote neuroprotection, its safety data to date, as well as its oral administration, support this study of BG-12 as a possible combination therapy for MS."
"The EXPLORE trial is another demonstration of Biogen Idec's commitment to MS," said Dr. Sandrock. "We have one of the most extensive MS pipelines in the industry, with multiple programs that target pathways thought to be critical in treating MS. This pipeline includes late-stage programs such as BG-12, PEGylated interferon beta 1a, and daclizumab, earlier-stage programs such as anti-LINGO, and several preclinical programs."

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