Researchers have uncovered evidence that age-related genetic mutations commonly associated with cancer and blood disorders may also contribute to the chronic brain inflammation characteristic of Alzheimer’s disease.

In a study published in Cell, investigators from the Icahn School of Medicine at Mount Sinai and Boston Children’s Hospital identified somatic mutations in brain immune cells from patients with Alzheimer’s disease. The findings suggest that genetic alterations acquired during aging may reshape the behavior of these cells, driving inflammatory processes linked to neurodegeneration.

The work introduces a potential new biological mechanism connecting aging, immune dysfunction, and Alzheimer’s disease, a condition that affects millions of people worldwide and remains one of the leading causes of dementia.

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