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Multiple SclerosisAugust 2018Summary reviewed August 2026

A Daily Pill Slowed Brain Shrinkage in People With Progressive MS

People with progressive multiple sclerosis who took ibudilast for two years lost about half as much brain tissue as those on placebo. Brain shrinkage is a key measure of MS progression. The treatment caused more stomach upset, headaches, and depression than placebo.

What the trial was testing

The NN102/SPRINT-MS enrolled 255 patients with multiple sclerosis. The study was sponsored by MediciNova and tracked outcomes across the full group of patients who matched the trial's eligibility profile.

It was initial testing (phase 2). Trials at this stage are designed to produce evidence regulators and physicians can act on — not just observations to follow up later.

What the results showed

Ibudilast cut the rate of brain tissue loss roughly in half over two years.

The New England journal of medicine · 2018 · NCT01982942

These findings — that patients lost about half as much brain tissue over two years vs. placebo — were published in the The New England journal of medicine and represent the headline result of the study.

Researchers tracked outcomes across 255 patients enrolled in the trial. The result was consistent enough across the group that the team felt confident reporting it.

What this means for patients

For patients with multiple sclerosis, this result changes the calculus on what to ask their care team about. Whether it changes day-to-day care depends on factors like disease subtype, prior treatments, and where the patient is in their care journey.

What you can do now

This treatment slowed a key sign of MS getting worse — brain tissue loss. That said, this was a mid-stage study and ibudilast is not yet FDA-approved for MS. Side effects included nausea, headaches, and depression. Talk to your neurologist about whether this or similar treatments might be right for you.

Eligibility for the treatments mentioned above depends on specific test results and clinical history. Bring this summary, the trial name, and your most recent labs or pathology report to your next visit.