Mechanisms of resilience to autosomal dominant Alzheimer's disease via oligogenic modulation of rare variants in the entorhinal cortex

The researchers conducted deep phenotyping and genotyping of the entorhinal cortex in PSEN1 E280A carriers with and without protection, comparing them to sporadic Alzheimer's disease and non-demented controls using single-nuclei and spatial transcriptomics. They found increased neuronal density in the protected carrier with the RELN-COLBOS variant, suggesting that oligogenic modulation—multiple rare variants acting together—may contribute to resilience. This work moves beyond single protective variants to a more complex genetic architecture, which could reveal new targets for therapies aimed at enhancing brain resilience in Alzheimer's disease. The findings are preliminary and published as a preprint, so replication and functional validation will be important next steps.