A single gene mutation protects against Alzheimer's disease in people destined to get the disease very young — and now we know why.
The gene mutation affects a protein called reelin that directs brain cells to shred the probable culprits in the disease — toxic amyloid plaques and tau tangles. The mutation makes reelin work much more efficiently, new research reveals.
The finding could point the way towards transformative therapies for the condition, experts said.
The new research, published in December 2025 in the Journal of the American Chemical Society, has identified exactly how the COLBOS mutation protected the patient's brain for decades.




