Scientists studied how brain changes relate to disability in people with primary progressive multiple sclerosis. This research analyzed data from 943 patients with a mean age of 58 years. The study followed participants for two years to see if MRI scans could predict physical and cognitive changes.
The main finding was that brain scans did not strongly predict disability changes. Researchers found only weak and inconsistent associations between MRI outcomes and disability measures. Specifically, changes in MRI measures during the first year did not predict changes in physical or cognitive disability in the second year.
There were no reported safety concerns regarding the medication in this specific analysis. However, the study has important limitations regarding the strength of the data. The findings question whether brain volume loss and lesion burden are suitable endpoints for trials in this condition.
Readers should understand this study looks at MRI links, not treatment benefits. The evidence is weak and inconsistent, so it does not prove one thing causes another. Patients should discuss their specific situation with a doctor rather than relying on these scan results alone.