Alzheimer's disease. Clinical molecular genetics

Area of Science:

• Neurogenetics
• Molecular Biology
• Gerontology

Background:

• Alzheimer's disease (AD) genetics involves multiple loci influencing disease onset and progression.
• Genetic variability, particularly the ApoE E4 allele, is a significant risk factor for late-onset AD.
• Early-onset AD is linked to mutations in the APP gene and an unidentified chromosome 14 locus.

Purpose of the Study:

• To elucidate the genetic underpinnings of Alzheimer's disease.
• To highlight the central role of fibrillar beta-amyloid deposition in AD pathogenesis.
• To underscore the growing importance of genetic data in AD diagnosis and the need for public education.

Main Methods:

• Analysis of genetic loci associated with early- and late-onset Alzheimer's disease.
• Review of genetic findings implicating fibrillar beta-amyloid in disease pathogenesis.
• Assessment of the current and future role of genetic testing in AD diagnosis.

Main Results:

• Identified three key genetic loci involved in AD: APP gene mutations, ApoE E4 allele, and a chromosome 14 locus.
• Established fibrillar beta-amyloid deposition as a unifying pathological process in AD.
• Confirmed the increasing use of genetic data for AD diagnosis.

Conclusions:

• Genetic research provides critical insights into Alzheimer's disease mechanisms.
• Fibrillar beta-amyloid is a key therapeutic target and diagnostic marker.
• Enhanced genetic education for healthcare professionals and the public is essential for informed decision-making regarding AD genetic testing.