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Phase II trial of MIS416 in secondary progressive MS suggests no benefit (06/07/17)

Top-line results of a one-year, phase II clinical trial of MIS416 in secondary progressive MS has revealed that none of the clinical or MRI measures suggested benefit of MIS416 over placebo.

MIS416 is a naturally occurring agent derived from bacteria that can alter immune responses. Innate Immunotherapeutics Limited, has been supporting research into MIS416 for the treatment of secondary progressive MS. In 2010, the US National MS Society, through its Fast Forward commercial research funding mechanism, helped to support its early testing. The company has been making MIS416 available through a compassionate use program in Australia.

The recently completed trial was a one-year, phase II trial involving 93 people with secondary progressive MS in Australia and New Zealand. About two-thirds of them were randomly assigned to receive weekly intravenous (into vein) injections of MIS416, and the rest received inactive placebo.

The team tested a variety of outcomes including walking speed, vision, cognition, progression of disability, MRI brain scans, and participants’ impressions of the benefits of the therapy. None of the measures showed significant differences between those on active therapy and those on placebo.

In terms of safety and tolerability, it has been noted that there was a higher incidence of adverse events in those taking MIS416 possibly associated with the fever, chills, muscle weakness that some experienced after the first dose.

“It is disappointing that these results don’t show benefit for people with secondary progressive MS, for whom there are few treatment options,” said Bruce Bebo, PhD, Executive Vice President, Research, at the US National MS Society.

The study’s sponsor, Innate Immunotherapeutics Limited, announced plans to continue analysing data to see if there were any subgroups of participants who responded to therapy, to further understand the drug’s tolerability, and to determine whether its compassionate use program will continue.

Source: National Multiple Sclerosis Society (06/07/17)

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