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UPDATE: Positive Results Announced from Clinical Trial of BAF-312 (Siponimod) in Secondary Progressive MS

September 17, 2016

(Originally released August 25, 2016)
 
Summary
  • Results presented at the 32nd Congress of the European Committee for Treatment and Research in Multiple Sclerosis (ECTRIMS) provided additional details from a 60-month, phase III clinical trial of the experimental oral therapy siponimod (BAF312, Novartis Pharmaceuticals AG) involving 1,651 people with secondary progressive MS.
  • The trial met its primary endpoint of reducing the risk of disability progression compared with inactive placebo. Those on active treatment had a 21% reduced risk of disability progression compared to those on placebo. Secondary endpoints suggested that those on active therapy had 23.4% lower average change in brain volume and reduced lesion volume.
  • The therapy was generally well tolerated and similar to adverse events reported for similar compounds. 
Details

Background:
Siponimod (BAF312) is an experimental immune system-modulating therapy that was designed to be a more selective sphingosine 1-phosphate receptor modulator than Gilenya® (fingolimod, Novartis International AG). Gilenya, was approved in 2010 for adults with relapsing forms of MS to reduce the frequency of clinical relapses and to delay the accumulation of physical disability. Siponimod previously demonstrated safety and efficacy on MRI scans in a phase II study in people with relapsing-remitting MS (The Lancet Neurology, 2013 Aug;12(8):756-67).  Siponimod is thought to act by retaining certain white blood cells in the body’s lymph nodes, keeping them out of circulation and from entering the central nervous system. Siponimod also distributes effectively to the central nervous system (brain and spinal cord) where it may have direct anti-inflammatory or other effects.
 
The Study: Participants were randomly assigned to take siponimod or placebo capsules daily for up to 60 months. The primary endpoint of the study was reducing the risk of disability progression, as measured by the EDSS scale at three months. Secondary endpoints included reducing the risk of disability progression as measured by the EDSS at six months versus placebo, the risk of worsening mobility as measured by the timed 25-foot walk test, disease activity as observed on MRI scans, relapse rate, and safety/ tolerability.
 
Results:  Results were presented at the 32nd Congress of the European Committee for Treatment and Research in Multiple Sclerosis (ECTRIMS) on September 17, 2016. The trial met its primary endpoint of reducing the risk of disability progression compared with inactive placebo. Those on active treatment had a 21% reduced risk of disability progression (confirmed at 3 months) compared to those on placebo. Secondary endpoints suggested that those on active therapy had at 26% reduced risk of disability progression (confirmed at 6 months), a 23.4% lower average change in brain volume, and reduced MRI-detected brain lesion volume. There was no significant difference seen between groups in the timed 25-foot walk. Relapse rates were significantly lower in those taking siponimod.
 
Safety: The therapy was generally well tolerated and similar to adverse events reported for similar compounds. Serious adverse events occurred in 16.7% of participants. The serious adverse events reported to be more likely for those taking siponimod included nervous system disorders and infections.
 
Comment:
“These results suggest a modest benefit for people with secondary progressive MS, which is a positive step forward in the global effort to speed solutions for people living with this chronic form of the disease,” said Timothy Coetzee, PhD, Chief Advocacy, Services and Research Officer at the National MS Society. “We look forward to learning additional details about its potential benefit and safety.”

About Multiple Sclerosis

Multiple sclerosis is an unpredictable disease of the central nervous system. Currently there is no cure. Symptoms vary from person to person and may include disabling fatigue, mobility challenges, cognitive changes, and vision issues. An estimated 1 million people live with MS in the United States. Early diagnosis and treatment are critical to minimize disability. Significant progress is being made to achieve a world free of MS.

About the National Multiple Sclerosis Society

The National MS Society, founded in 1946, is the global leader of a growing movement dedicated to creating a world free of MS. The Society funds cutting-edge research for a cure, drives change through advocacy and provides programs and services to help people affected by MS live their best lives. Connect to learn more and get involved: nationalMSsociety.org, Facebook, X, formerly known as Twitter, Instagram, YouTube or 1-800-344-4867.

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