TY - JOUR KW - Computational models KW - Data integration KW - Gene expression KW - Quantitative Trait Loci AU - Sanan Venkatesh AU - Roman Kosoy AU - Zhenyi Wu AU - Marios Anyfantakis AU - Christian Dillard AU - Prashant N. M. AU - David Burstein AU - Deepika Mathur AU - Chris Chatzinakos AU - Bukola Ajanaku AU - Fotis Tsetsos AU - Biao Zeng AU - Sonali Gupta AU - Rachel Bercovitch AU - Aram Hong AU - Clara Casey AU - Marcela Alvia AU - Zhiping Shao AU - Stathis Argyriou AU - Karen Therrien AU - Tim Bigde li AU - Pavan Auluck AU - David A. Bennett AU - Stefano Marenco AU - Vahram Haroutunian AU - Kiran Girdhar AU - Jaroslav Bendl AU - Donghoon Lee AU - John F. Fullard AU - Gabriel E. Hoffman AU - Georgios Voloudakis AU - Panos Roussos AB - Common brain disorders impose a substantial health burden, but localizing their genetic risk in the brain remains challenging1. Although genome-wide association studies have identified numerous loci associated with neuropsychiatric and neurodegenerative disorders, many of these loci lie in non-coding regions that influence gene expression in specific cell types2–5. Traditional bulk brain transcriptomic analyses, which often focus on European ancestry cohorts, average over cellular diversity, obscuring genetic risk-related changes in gene expression. Here we use single-nucleus gene expression profiles from the dorsolateral prefrontal cortex in the multi-ancestry PsychAD cohort to develop transcriptomic imputation models of genetically regulated expression across major brain cell types. Applying these models to neuropsychiatric and neurodegenerative disorders reveals thousands of gene–trait associations that are undetectable in bulk tissue analyses and resolves many signals to discrete neuronal, glial and immune cell populations. Cross-ancestry analyses in the Million Veteran Program confirm these associations, reveal pleiotropic effects of cell-type-specific predicted expression and demonstrate that trait-related dysregulation is conserved across ancestries, enabling mapping of causal genes and pathways. Together, these findings provide a cell-type-resolved and ancestry-aware atlas of genetically regulated expression in the human prefrontal cortex and illustrate how single-nucleus transcriptomics can sharpen gene discovery and therapeutic target prioritization for complex brain disorders. BT - Nature DA - 2026-09 DO - 10.1038/s41586-026-10836-6 IS - 8133 LA - en N2 - Common brain disorders impose a substantial health burden, but localizing their genetic risk in the brain remains challenging1. Although genome-wide association studies have identified numerous loci associated with neuropsychiatric and neurodegenerative disorders, many of these loci lie in non-coding regions that influence gene expression in specific cell types2–5. Traditional bulk brain transcriptomic analyses, which often focus on European ancestry cohorts, average over cellular diversity, obscuring genetic risk-related changes in gene expression. Here we use single-nucleus gene expression profiles from the dorsolateral prefrontal cortex in the multi-ancestry PsychAD cohort to develop transcriptomic imputation models of genetically regulated expression across major brain cell types. Applying these models to neuropsychiatric and neurodegenerative disorders reveals thousands of gene–trait associations that are undetectable in bulk tissue analyses and resolves many signals to discrete neuronal, glial and immune cell populations. Cross-ancestry analyses in the Million Veteran Program confirm these associations, reveal pleiotropic effects of cell-type-specific predicted expression and demonstrate that trait-related dysregulation is conserved across ancestries, enabling mapping of causal genes and pathways. Together, these findings provide a cell-type-resolved and ancestry-aware atlas of genetically regulated expression in the human prefrontal cortex and illustrate how single-nucleus transcriptomics can sharpen gene discovery and therapeutic target prioritization for complex brain disorders. PY - 2026 SP - 1016 EP - 1026 T2 - Nature TI - Single-nucleus transcriptome-wide association study of human brain disorders UR - https://www.nature.com/articles/s41586-026-10836-6 VL - 657 Y2 - 2026-09-25 SN - 1476-4687 ER -