3 Key Takeaways
Plain English Summary- 01Core Finding
This is due, in large part, to a lack of recognition that the most common allele of the APOE gene, ε3, increases risk of Alzheimer's disease relative to the ε2 allele.
- 02Study Evidence
Tested in a observational cohort study at the real-world cohort stage.
- 03Practical Meaning
Observational cohort findings reveal real-world links, though lifestyle or unmeasured factors cannot be fully ruled out without an RCT.
What This Means for You
Moreover, most sporadic early-onset Alzheimer's disease might not occur without the contributions of APOE ε3 and ε4, and the two alleles may be component causes of most forms of Alzheimer's disease arising from highly penetrant genetic mutations and trisomy 21. Taken together, these lines of epidemiological evidence suggest that APOE is a predominant cause of Alzheimer's disease, spanning the aetiologies of many forms of the disease. Consequently, almost all prospective cases of Alzheimer's disease might benefit from the development of therapies to modulate APOE's role in the disease's pathophysiology.
The Discovery
The full contribution of apolipoprotein E (APOE) to Alzheimer's disease burden in populations may have been overlooked. This is due, in large part, to a lack of recognition that the most common allele of the APOE gene, ε3, increases risk of Alzheimer's disease relative to the ε2 allele. When the impact of both ε3 and ε4 alleles of APOE are considered, the majority of late-onset Alzheimer's disease appears to be attributable to differences in APOE function or expression in populations of European ancestry and in other ethnic groups for which we have reliable data. Moreover, most sporadic early-onset Alzheimer's disease might not occur without the contributions of APOE ε3 and ε4, and the two alleles may be component causes of most forms of Alzheimer's disease arising from highly penetrant genetic mutations and trisomy 21.
How It Works, Simply
This neurology research focuses on genetics. Researchers evaluated it using an observational cohort study at the real-world cohort stage of medical research.
3 Key Takeaways
Clinical Takeaways- 01Core Finding
This is due, in large part, to a lack of recognition that the most common allele of the APOE gene, ε3, increases risk of Alzheimer's disease relative to the ε2 allele.
- 02Study Evidence
Tested in a observational cohort study at the real-world cohort stage.
- 03Practical Meaning
Observational cohort findings reveal real-world links, though lifestyle or unmeasured factors cannot be fully ruled out without an RCT.
Biological Mechanism & Study Design
Study Design & Cohort
Observational cohort study
Observational cohort study · Real-World Cohort
Biological Pathway & Modality
Genetics
Intervention: Understanding apolipoprotein E as a predominant cause of Alzheimer's disease
Experimental Findings & Endpoints
The full contribution of apolipoprotein E (APOE) to Alzheimer's disease burden in populations may have been overlooked.
This is due, in large part, to a lack of recognition that the most common allele of the APOE gene, ε3, increases risk of Alzheimer's disease relative to the ε2 allele. When the impact of both ε3 and ε4 alleles of APOE are considered, the majority of late-onset Alzheimer's disease appears to be attributable to differences in APOE function or expression in populations of European ancestry and in other ethnic groups for which we have reliable data.
Moreover, most sporadic early-onset Alzheimer's disease might not occur without the contributions of APOE ε3 and ε4, and the two alleles may be component causes of most forms of Alzheimer's disease arising from highly penetrant genetic mutations and trisomy 21.
Clinical Translation & Practice Context
Moreover, most sporadic early-onset Alzheimer's disease might not occur without the contributions of APOE ε3 and ε4, and the two alleles may be component causes of most forms of Alzheimer's disease arising from highly penetrant genetic mutations and trisomy 21.
Taken together, these lines of epidemiological evidence suggest that APOE is a predominant cause of Alzheimer's disease, spanning the aetiologies of many forms of the disease. Consequently, almost all prospective cases of Alzheimer's disease might benefit from the development of therapies to modulate APOE's role in the disease's pathophysiology.
The Bottom Line · Clinical Pearl
“Consequently, almost all prospective cases of Alzheimer's disease might benefit from the development of therapies to modulate APOE's role in the disease's pathophysiology.”
Published in Brain: A Journal of Neurology · Current Stage: Real-World Cohort
