Pharmacogenetics or predictive genetics? APOE testing blurs the lines
Stefania Zampatti1, Cristina Peconi1, Juliette Farro1
1Genomic Medicine Laboratory UILDM, IRCCS Santa Lucia Foundation, Rome, Italy.
Frontiers in Pharmacology
|August 5, 2025
Summary
APOE genotyping in Alzheimer's disease patients helps optimize anti-amyloid therapy and predict disease risk. Comprehensive genetic counseling is crucial due to familial implications and ethical considerations.
Area of Science:
- Pharmacogenetics
- Neurogenetics
- Personalized Medicine
Background:
- Pharmacogenetics optimizes drug therapy, minimizing adverse drug reactions.
- APOE alleles are associated with Amyloid-Related Imaging Abnormalities (ARIA) in Alzheimer's disease patients treated with anti-amyloid monoclonal antibodies.
- APOE genotyping is increasingly integrated into pharmacogenetic testing.
Purpose of the Study:
- To evaluate the dual role of APOE genotyping in pharmacogenetics and germline testing.
- To highlight the importance of genetic counseling for APOE testing in Alzheimer's disease.
- To address the ethical considerations of disclosing genetic risk information.
Main Methods:
- Review of the association between APOE alleles and ARIA.
- Analysis of APOE genotyping's role in pharmacogenetics and familial risk assessment.
- Discussion of genetic counseling requirements for APOE testing.
Main Results:
- APOE genotyping informs both drug safety (ARIA risk) and familial Alzheimer's disease risk.
- Carriers of risk APOE alleles, particularly homozygotes, have a higher risk and require monitoring.
- APOE testing has significant implications for patients and their families, necessitating enhanced genetic counseling.
Conclusions:
- APOE genotyping is a critical tool at the intersection of pharmacogenetics and germline testing for Alzheimer's disease.
- Enhanced genetic counseling is essential to address the psychological and familial impacts of APOE testing.
- Informed consent and ethical decision-making are paramount for patients undergoing APOE genotyping.
Keywords:
APOEARIAalzheimer diseasegenetic counsellingmonoclonal antibodiespharmacogeneticspredictive testMore Related Videos
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