Acorda Presents Data on First Clinical Study of Remyelinating Antibody for Multiple Sclerosis at American Academy of Neurology Annual Meeting

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Acorda Therapeutics, Inc.
ACOR
today presented data from a Phase 1 clinical trial of rHIgM22, a remyelinating antibody being studied for the treatment of multiple sclerosis (MS). Safety data showed rHIgM22 was well-tolerated in each of the five tested doses, supporting additional clinical development. In addition, testing detected rHIgM22 in cerebrospinal fluid (CSF), indicating the drug's access to the central nervous system. These data were presented at the 67th American Academy of Neurology Annual Meeting in Washington, DC. "In this study, rHIgM22 was well-tolerated over the full range of dose levels tested. Furthermore, we were able to verify that rHIgM22 is present in the CSF, showing that the antibody is available to the brain," said Anthony Caggiano, M.D., Ph.D., Acorda's Senior Vice President of Research and Development. "We plan to advance our clinical program based on these data; the next study will include patients experiencing acute relapses. The combined results of these two studies will inform subsequent trials, which we anticipate will enroll both stable patients and those experiencing active relapses." This was a placebo-controlled, single-dose, escalating study in 72 patients with clinically stable MS to explore dose tolerability for six months after treatment. rHIgM22 was well-tolerated at all doses tested, with no safety signals identified. There were no dose-limiting toxicities and no serious adverse events in any of the five rHIgM22 dose levels in the study. The data presented included the concentration of rHIgM22 in the CSF at two days and four weeks after IV infusion. The antibody was measured at levels expected for antibodies of this class. There were no significant changes from baseline in clinical measures including MRI, magnetic resonance spectroscopy, Expanded Disability Status Scale, Timed 25-Foot Walk, and low contrast visual acuity. The most commonly observed adverse events (>5% in the combined rHIgM22 treatment groups) reported in the study were: headache, contact dermatitis, multiple sclerosis relapse, infusion site hematoma, fatigue, arthralgia, back pain, muscular weakness, neck pain, pain in an extremity, pruritus, contusion, and flushing. No participants withdrew due to adverse events. No safety signals were identified by standard clinical MRI evaluations, or standard clinical, laboratory or ECG assessments. The data were presented in a poster, "Safety and Tolerability of the Remyelinating Therapeutic Antibody rHIgM22 in Patients with Stable Multiple Sclerosis" (poster presentation number P4.339). Top-line safety and tolerability data were previously announced by the Company in February 2015.
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