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Drug Development.

Nicolo Foppa Pedretti1, Yashmin Karten1, Yi Zhang1

  • 1Critical Path Institute, Tucson, AZ, USA.

Alzheimer'S & Dementia : the Journal of the Alzheimer'S Association
|December 25, 2025
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Summary
This summary is machine-generated.

Autosomal dominant Alzheimer's disease (ADAD) trials reveal distinct tau accumulation patterns in mutation carriers. These findings offer insights into early disease progression and neurodegenerative mechanisms for both ADAD and sporadic Alzheimer's disease.

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Area of Science:

  • Neuroscience
  • Genetics
  • Pharmacology

Background:

  • Autosomal dominant Alzheimer's disease (ADAD) presents unique drug development challenges.
  • Cognitively healthy individuals with ADAD offer a model for studying early sporadic Alzheimer's disease (AD).
  • The CPAD consortium aims to accelerate AD drug development by integrating clinical and observational data.

Purpose of the Study:

  • To model drug-disease-trial dynamics for ADAD.
  • To investigate tau and amyloid pathologies in early AD.
  • To understand biomarker-cognition relationships and disease progression.

Main Methods:

  • Utilized data from the Alzheimer's Prevention Initiative ADAD Colombia Trial.
  • Employed a placebo-controlled clinical trial of crenezumab in PSEN1 E280A kindred members.
  • Applied linear mixed-effect models to analyze longitudinal outcomes and regional tau/amyloid PET data.

Main Results:

  • Identified distinct regional tau accumulation patterns in ADAD mutation carriers versus non-carriers.
  • Observed variations in baseline amyloid dynamics and demographic effects on tau accumulation.
  • Differentiated cognitive progression characteristics between ADAD and sporadic AD, revealing neurodegenerative mechanisms.

Conclusions:

  • Characterized unique tau accumulation patterns and amyloid-tau interactions in ADAD mutation carriers.
  • Provided insights into early disease progression and neurodegenerative mechanisms for ADAD and sporadic AD.
  • Validated a robust framework for advancing therapeutic research in Alzheimer's disease.