Spatiotemporal Patterns of Amyloid Deposition Serve as Prognostic Markers of Alzheimer's Disease

Strategic Insights -

Research conducted by the University of Tokyo has identified distinct spatiotemporal patterns of amyloid deposition in the brains of individuals with Alzheimer's disease. The study, part of the Alzheimer's Disease Neuroimaging Initiative, analyzed amyloid PET data from 1,049 participants, including those with cognitive impairment and Alzheimer's disease. The researchers found that the rate of amyloid deposition differed between subtypes, even after adjusting for age, diagnosis, and other factors. The study concluded that amyloid PET subtyping may serve as a valuable independent prognostic biomarker for Alzheimer's disease.

Key Takeaways:

  • The study included 1,049 participants, with follow-up data available for 643, who were analyzed for amyloid PET data and cognitive outcomes.
  • Three distinct spatiotemporal patterns of amyloid deposition were identified in the early stages of the disease, primarily affecting the parietal, frontotemporal, and occipital lobes.
  • The amyloid deposition rates differed between subtypes, even after controlling for age, diagnosis, APOE, baseline amyloid burden, and tracer types.
  • The study found regions of amyloid deposition covariation, which served as regions of interest, and multinomial logistic regression models evaluated the impacts of demographics and risk factors on subtype assignment.
  • Longitudinal data were used to validate the prognostic value of the subtypes for cognitive decline.
  • The study concluded that amyloid PET subtyping may serve as a valuable independent prognostic biomarker for Alzheimer's disease.

Statistics:

  • 1,049 participants were included in the study, with 466 cognitively normal, 447 with mild cognitive impairment, and 136 with Alzheimer's disease.
  • The study followed participants for a median of 915 +/- 431 days from baseline.
  • 643 participants had follow-up data available.
  • 72% of participants were women.
  • 543 women were included in the study.

Sources:

  • NewsRx. Studies from University of Tokyo Provide New Data on Alzheimer Disease (Spatiotemporal patterns of amyloid deposition as prognostic markers of Alzheimer's disease). Health & Medicine Week. October 17, 2025; p 7589.
  • Spatiotemporal patterns of amyloid deposition as prognostic markers of Alzheimer's disease. Neuroradiology, 2025.