Researchers at Montreal's Neurological Institute discovered blood proteins that can predict whether a person is at risk of developing multiple sclerosis.

This discovery is significant because it could allow doctors to identify high-risk individuals long before clinical symptoms appear. Early detection provides a critical window for medical intervention that may alter the progression of the disease.

The team in Montreal, Canada, identified a specific group of proteins whose levels are altered in those predisposed to the condition [1]. According to reports published May 26, 2026, these altered blood proteins can be detected more than 10 years before a formal MS diagnosis is made [2].

Multiple sclerosis is a chronic disease that affects the central nervous system, often characterized by the immune system attacking the protective sheath that covers nerve fibers. By identifying these biomarkers, the researchers said they aim to create a screening process that flags potential patients before irreversible neurological damage occurs [3].

The study emphasizes the role of protein biomarkers in the blood as a non-invasive way to monitor neurological health. Current diagnostic paths often rely on the appearance of physical symptoms or MRI scans, which typically happen after the disease has already progressed [2].

While the research marks a breakthrough in predictive medicine, the researchers said they are focusing on how these findings can be translated into clinical tools. The goal is to enable a healthcare system where preventative strategies are deployed based on protein signatures, rather than waiting for the onset of disability [3].

“Blood proteins can be detected more than a decade before an MS diagnosis.”

The ability to predict multiple sclerosis a decade in advance shifts the clinical approach from reactive treatment to proactive prevention. If these biomarkers are validated for widespread use, it could lead to the development of preventative therapies that stop the disease before it begins, potentially reducing the long-term disability associated with MS.