TY - JOUR A1 - van Bree, Elisabeth J. A1 - Guimarães, Rita L.F.P. A1 - Lundberg, Mischa A1 - Blujdea, Elena R. A1 - Rosenkrantz, Jimi L. A1 - White, Fred T.G. A1 - Poppinga, Josse A1 - Ferrer-Raventós, Paula A1 - Schneider, Anne-Fleur E. A1 - Clayton, Isabella A1 - Haussler, David A1 - Reinders, Marcel J.T. A1 - Holstege, Henne A1 - Ewing, Adam D. A1 - Moses, Colette A1 - Jacobs, Frank M.J. T1 - A hidden layer of structural variation in transposable elements reveals potential genetic modifiers in human disease-risk loci Y1 - 2022/04/01 JF - Genome Research JO - Genome Research SP - 656 EP - 670 DO - 10.1101/gr.275515.121 VL - 32 IS - 4 UR - http://genome.cshlp.org/content/32/4/656.abstract N2 - Genome-wide association studies (GWAS) have been highly informative in discovering disease-associated loci but are not designed to capture all structural variations in the human genome. Using long-read sequencing data, we discovered widespread structural variation within SINE-VNTR-Alu (SVA) elements, a class of great ape-specific transposable elements with gene-regulatory roles, which represents a major source of structural variability in the human population. We highlight the presence of structurally variable SVAs (SV-SVAs) in neurological disease–associated loci, and we further associate SV-SVAs to disease-associated SNPs and differential gene expression using luciferase assays and expression quantitative trait loci data. Finally, we genetically deleted SV-SVAs in the BIN1 and CD2AP Alzheimer's disease–associated risk loci and in the BCKDK Parkinson's disease–associated risk locus and assessed multiple aspects of their gene-regulatory influence in a human neuronal context. Together, this study reveals a novel layer of genetic variation in transposable elements that may contribute to identification of the structural variants that are the actual drivers of disease associations of GWAS loci. ER -