| Title: | RPTOR Is an Alzheimer's Disease Susceptibility Gene Associated with the Risk Factors Body Mass Index and Infectious Encephalitis |
| Journal: | Journal of Alzheimer's Disease Reports |
| Published: | 18 Apr 2024 |
| Pubmed: | https://pubmed.ncbi.nlm.nih.gov/38746632/ |
| DOI: | https://doi.org/10.3233/adr-230185 |
| URL: | https://content.iospress.com:443/download/journal-of-alzheimers-disease-reports/adr230185?id=journal-of-alzheimers-disease-reports%2Fadr230185 |
Publication 9869
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Abstract
Background: In comparison to persons who did not have viral encephalitis, people with viral encephalitis had a later-life risk of Alzheimer's disease (AD) that was 31 times higher. In a previous study, we were able to confirm the association of viral encephalitis with AD and suggest that West Nile Virus infection is a significant AD risk factor. A genome wide association study (GWAS) with UK Biobank data revealed that the gene RAR Related Orphan Receptor B (RORB) is significantly associated with viral encephalitis.</p>
Objective: To use data from the 8 PheWeb datasets to try to identify genes other than RORB that might be involved in both infectious encephalitis and AD.</p>
Methods: PheWeb includes data from UKBB and 5 other databanks. We used UK Biobank data to examine gene expression and phenotypic expression.</p>
Results: PheWeb identified additional genes associated with both infectious encephalitis and AD. RPTOR, a gene associated with the mTOR pathway, emerges as significant. Analyses of UK Biobank data reveal the impact of RPTOR on AD risk, with carriers of the minor allele A exhibiting decreased prevalence in subjects under age 55. Further analysis demonstrates that RPTOR genotypes influence body mass index (BMI) in subjects of all ages, with carriers of the minor allele A having lower BMI. Logistic regression analyses confirm the association between reduced BMI and increased AD risk, along with the established factor of age.</p>
Conclusions: RPTOR may represent an AD gene, though mTOR's role in AD and BMI is complex. Nevertheless, RPTOR and mTOR could represent potential therapeutic targets for AD.</p>
2 Authors
- Steven Lehrer
- Peter H. Rheinstein
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