05/09/2026
Have you been offered Leqembi or Kisulna to treat Alzheimer's Disease?
These medications do remove amyloid from the brain but DO NOT improve cognition or slow progression.
A large systematic review of 17 randomized trials (over 20,000 participants) evaluated several amyloid-beta–targeting monoclonal antibodies for early Alzheimer’s disease.
Key findings:
-These drugs remove amyloid from the brain, but do not meaningfully improve cognition or slow dementia progression.
-Effects on daily functioning are minimal at best.
-They increase the risk of brain imaging abnormalities (ARIA), including swelling and bleeding.
-They do not significantly increase overall serious adverse events or mortality.
Bottom line:
-Despite successfully targeting amyloid, these treatments provide little to no clinically meaningful benefit in patients with mild cognitive impairment or mild Alzheimer’s dementia. The findings suggest that amyloid may not be the most effective therapeutic target, and future research should explore other mechanisms.