03253nas a2200637 4500008004100000022001400041245013600055210006900191260001600260300001400276490000800290520140100298100002001699700001901719700001701738700001701755700001501772700001701787700002401804700001601828700001401844700002401858700002101882700001701903700002001920700001701940700002201957700002201979700002202001700002802023700002002051700002002071700001902091700002102110700001802131700002002149700001802169700002302187700002102210700001602231700001702247700002002264700002702284700002002311700002102331700002402352700001702376700002102393700002202414700002102436700001902457700001802476710005402494710003102548856003602579 2019 eng d a1537-660500aSequencing Analysis at 8p23 Identifies Multiple Rare Variants in DLC1 Associated with Sleep-Related Oxyhemoglobin Saturation Level.0 aSequencing Analysis at 8p23 Identifies Multiple Rare Variants in c2019 Nov 07 a1057-10680 v1053 a
Average arterial oxyhemoglobin saturation during sleep (AvSpOS) is a clinically relevant measure of physiological stress associated with sleep-disordered breathing, and this measure predicts incident cardiovascular disease and mortality. Using high-depth whole-genome sequencing data from the National Heart, Lung, and Blood Institute (NHLBI) Trans-Omics for Precision Medicine (TOPMed) project and focusing on genes with linkage evidence on chromosome 8p23, we observed that six coding and 51 noncoding variants in a gene that encodes the GTPase-activating protein (DLC1) are significantly associated with AvSpOS and replicated in independent subjects. The combined DLC1 association evidence of discovery and replication cohorts reaches genome-wide significance in European Americans (p = 7.9 × 10). A risk score for these variants, built on an independent dataset, explains 0.97% of the AvSpOS variation and contributes to the linkage evidence. The 51 noncoding variants are enriched in regulatory features in a human lung fibroblast cell line and contribute to DLC1 expression variation. Mendelian randomization analysis using these variants indicates a significant causal effect of DLC1 expression in fibroblasts on AvSpOS. Multiple sources of information, including genetic variants, gene expression, and methylation, consistently suggest that DLC1 is a gene associated with AvSpOS.
1 aLiang, Jingjing1 aCade, Brian, E1 aHe, Karen, Y1 aWang, Heming1 aLee, Jiwon1 aSofer, Tamar1 aWilliams, Stephanie1 aLi, Ruitong1 aChen, Han1 aGottlieb, Daniel, J1 aEvans, Daniel, S1 aGuo, Xiuqing1 aGharib, Sina, A1 aHale, Lauren1 aHillman, David, R1 aLutsey, Pamela, L1 aMukherjee, Sutapa1 aOchs-Balcom, Heather, M1 aPalmer, Lyle, J1 aRhodes, Jessica1 aPurcell, Shaun1 aPatel, Sanjay, R1 aSaxena, Richa1 aStone, Katie, L1 aTang, Weihong1 aTranah, Gregory, J1 aBoerwinkle, Eric1 aLin, Xihong1 aLiu, Yongmei1 aPsaty, Bruce, M1 aVasan, Ramachandran, S1 aCho, Michael, H1 aManichaikul, Ani1 aSilverman, Edwin, K1 aBarr, Graham1 aRich, Stephen, S1 aRotter, Jerome, I1 aWilson, James, G1 aRedline, Susan1 aZhu, Xiaofeng1 aNHLBI Trans-Omics for Precision Medicine (TOPMed)1 aTOPMed Sleep Working Group uhttps://chs-nhlbi.org/node/8199