Rare Genetic Mutation Linked to Alzheimer's Protection Discovered

Researchers at Columbia University have identified a rare mutation in the fibronectin (FN1) gene that appears to protect individuals from Alzheimer's disease, even with a high genetic predisposition. This mutation limits the buildup of excessive fibronectin around brain blood vessels, a condition often associated with the APOE ε4 Alzheimer's risk variant that compromises the blood-brain barrier. The discovery offers a new potential pathway for developing Alzheimer's treatments.