Abstract
Background:
Protein truncating variants (PTVs) in SORL1 are observed almost exclusively in Alzheimer’s Disease (AD) cases, but the effect of rare SORL1 missense variants is unclear.
Methods:
To identify high-priority missense variants (HPVs), we applied ‘domain mapping of disease mutations’ for the 637 unique coding SORL1 variants detected in 18,959 AD-cases and 21,893 non-demented controls.
Results:
In this sample, PTVs and HPVs associated with respectively a 35- and 10-fold increased risk of early onset AD and 17- and 6-fold increased risk of overall AD. The median age at onset (AAO) of PTV- and HPV-carriers was 62 and 64 years, and APOE-genotype contributed to AAO-variability. The median AAO of PTV- and HPV-carriers is ~8–10 years earlier than wild-type SORL1 carriers, matched for APOE-genotype. Specific HPVs are highly penetrant and lead to earlier AAOs than PTVs, suggesting possible dominant negative effects.
Conclusion:
Our results justify a debate on whether HPV carriers should be considered for clinical counseling.
| Original language | English |
|---|---|
| Article number | 122 |
| Journal | Molecular Neurodegeneration |
| Volume | 20 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 1 Dec 2025 |
Bibliographical note
Publisher Copyright:© The Author(s) 2025.
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