Whole-genome sequencing study of 488,888 individuals identifies rare variants and genes associated with glaucoma
Gao, X. R.; Kizhatil, K.
Show abstract
Glaucoma is a leading cause of irreversible blindness worldwide, with primary open-angle glaucoma (POAG) being the most common form. While previous genome-wide association studies have identified common genetic variants associated with POAG, primarily through array-based genotyping and imputation, the role of rare variants remains poorly understood. Our study aims to address this gap in knowledge by conducting the largest whole-genome sequencing (WGS) analysis of glaucoma to date. We analyzed WGS data from 488,888 UK Biobank participants, comprising 19,440 POAG cases and 469,448 controls. To validate our findings, we used the FinnGen cohort and the Million Veteran Program. We confirmed associations of known glaucoma genes, including MYOC, OPTN, and identified more than 68 previously unreported genes for glaucoma, such as FMO4, PRRC2C, MTOR, ANGLPL7, AREL1, and LINC02210-CRHR1. Seven of these genes, i.e., MTOR, COL1A2, DDR2, LYN, NR1H3, TGFB3, and MAPT, are current drug targets. Our findings underscore the value of WGS for uncovering rare variants and novel genes implicated in glaucoma. By expanding the genetic architecture of this complex disease, our work paves the way for future research into disease mechanisms, and ultimately, the development of more targeted preventive and therapeutic strategies.
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