Comprehensive adjudication identifies 111 high-confidence loci for Alzheimer's disease and related dementias
Leung, Y. Y.; Marcora, E. M.; Naj, A.; Patel, T.; Sedgwick, K.; Katanic, Z.; Corces, R. M.; Wang, L.-S.; Mayeux, R. C.; Goate, A. M.; Farrer, L.; Schellenberg, G. D.; Kunkle, B.; Vardarajan, B. N.
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Background: The Alzheimer's Disease Sequencing Project Gene Verification Committee developed a systematic framework to adjudicate genetic evidence for AD and related dementias, addressing wide variation in association quality. Methods: Phase 1 established tiered criteria by evaluating 23 nominated loci across study designs. Phase 2 applied this framework to 29 large-scale genome-wide studies published since 2015, tiering 163 unique loci. Results: Phase 1 yielded 17 high-confidence loci (12 linked to specific genes), and Phase 2 identified 111 high-confidence loci/genes with replicated associations across ancestries and convergent single-variant/variant-set evidence. Prioritized loci highlight APP processing, microglial immunity, and lipid metabolism pathways, including genes not captured by existing resources like Agora or Open Targets. Summarized results can be viewed at https://topgenes.niagads.org/. Conclusion: This rigorously adjudicated catalog represents the most comprehensive AD/ADRD genetics resource to date, providing a foundation for functional validation and therapeutic discovery with broad applicability to complex diseases.
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