ArticleThe journal of prevention of Alzheimer's disease2026
Reductions in neuropsychiatric symptoms after lecanemab treatment and their associations with imaging markers of β-amyloid clearance.
Article in The journal of prevention of Alzheimer's disease, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundAnti-amyloid-β (Aβ) therapies can slow cognitive decline and reduce cerebral amyloid burden in Alzheimer's disease (AD). Neuropsychiatric symptoms (NPS) are highly prevalent across the disease course and substantially contribute to disability and caregiver burden. However, whether Aβ clearance translates into improvements in NPS remains unclear.
methodWe enrolled 144 individuals with AD-related mild cognitive impairment or AD dementia who received intravenous lecanemab infusions. Standardized clinical rating scales, including the Neuropsychiatric Inventory, and amyloid PET were assessed at baseline (V0), 6 months (V1), and 12 months (V2). Longitudinal changes in clinical function and amyloid burden were analyzed.
resultsLecanemab treatment was associated with robust reductions in amyloid PET biomarkers and significant short-term reductions in NPS scores in patients who completed follow-up. Longitudinal analyses showed that reductions in total NPI scores were significantly associated with amyloid-β clearance in the insular cortex. Reductions in the hyperactivity subsyndrome were associated with amyloid reduction across a broader network, including the frontal and temporal lobes, striatum, and insular cortex.
conclusionsIn this real-world cohort, lecanemab was associated with short-term reductions in NPS. Changes in NPS severity were linked to regional amyloid-β clearance.
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