TY - JOUR T1 - Rare and Coding Region Genetic Variants Associated With Risk of Ischemic Stroke: The NHLBI Exome Sequence Project. JF - JAMA Neurol Y1 - 2015 A1 - Auer, Paul L A1 - Nalls, Mike A1 - Meschia, James F A1 - Worrall, Bradford B A1 - Longstreth, W T A1 - Seshadri, Sudha A1 - Kooperberg, Charles A1 - Burger, Kathleen M A1 - Carlson, Christopher S A1 - Carty, Cara L A1 - Chen, Wei-Min A1 - Cupples, L Adrienne A1 - DeStefano, Anita L A1 - Fornage, Myriam A1 - Hardy, John A1 - Hsu, Li A1 - Jackson, Rebecca D A1 - Jarvik, Gail P A1 - Kim, Daniel S A1 - Lakshminarayan, Kamakshi A1 - Lange, Leslie A A1 - Manichaikul, Ani A1 - Quinlan, Aaron R A1 - Singleton, Andrew B A1 - Thornton, Timothy A A1 - Nickerson, Deborah A A1 - Peters, Ulrike A1 - Rich, Stephen S KW - Aged KW - Brain Ischemia KW - Exome KW - Female KW - Genetic Predisposition to Disease KW - Genetic Variation KW - Genome-Wide Association Study KW - Humans KW - Male KW - Middle Aged KW - Muscle Proteins KW - National Heart, Lung, and Blood Institute (U.S.) KW - Nuclear Proteins KW - Open Reading Frames KW - Palmitoyl-CoA Hydrolase KW - Stroke KW - United States AB -

IMPORTANCE: Stroke is the second leading cause of death and the third leading cause of years of life lost. Genetic factors contribute to stroke prevalence, and candidate gene and genome-wide association studies (GWAS) have identified variants associated with ischemic stroke risk. These variants often have small effects without obvious biological significance. Exome sequencing may discover predicted protein-altering variants with a potentially large effect on ischemic stroke risk.

OBJECTIVE: To investigate the contribution of rare and common genetic variants to ischemic stroke risk by targeting the protein-coding regions of the human genome.

DESIGN, SETTING, AND PARTICIPANTS: The National Heart, Lung, and Blood Institute (NHLBI) Exome Sequencing Project (ESP) analyzed approximately 6000 participants from numerous cohorts of European and African ancestry. For discovery, 365 cases of ischemic stroke (small-vessel and large-vessel subtypes) and 809 European ancestry controls were sequenced; for replication, 47 affected sibpairs concordant for stroke subtype and an African American case-control series were sequenced, with 1672 cases and 4509 European ancestry controls genotyped. The ESP's exome sequencing and genotyping started on January 1, 2010, and continued through June 30, 2012. Analyses were conducted on the full data set between July 12, 2012, and July 13, 2013.

MAIN OUTCOMES AND MEASURES: Discovery of new variants or genes contributing to ischemic stroke risk and subtype (primary analysis) and determination of support for protein-coding variants contributing to risk in previously published candidate genes (secondary analysis).

RESULTS: We identified 2 novel genes associated with an increased risk of ischemic stroke: a protein-coding variant in PDE4DIP (rs1778155; odds ratio, 2.15; P = 2.63 × 10(-8)) with an intracellular signal transduction mechanism and in ACOT4 (rs35724886; odds ratio, 2.04; P = 1.24 × 10(-7)) with a fatty acid metabolism; confirmation of PDE4DIP was observed in affected sibpair families with large-vessel stroke subtype and in African Americans. Replication of protein-coding variants in candidate genes was observed for 2 previously reported GWAS associations: ZFHX3 (cardioembolic stroke) and ABCA1 (large-vessel stroke).

CONCLUSIONS AND RELEVANCE: Exome sequencing discovered 2 novel genes and mechanisms, PDE4DIP and ACOT4, associated with increased risk for ischemic stroke. In addition, ZFHX3 and ABCA1 were discovered to have protein-coding variants associated with ischemic stroke. These results suggest that genetic variation in novel pathways contributes to ischemic stroke risk and serves as a target for prediction, prevention, and therapy.

VL - 72 IS - 7 U1 - http://www.ncbi.nlm.nih.gov/pubmed/25961151?dopt=Abstract ER - TY - JOUR T1 - Genetic loci associated with heart rate variability and their effects on cardiac disease risk. JF - Nat Commun Y1 - 2017 A1 - Nolte, Ilja M A1 - Munoz, M Loretto A1 - Tragante, Vinicius A1 - Amare, Azmeraw T A1 - Jansen, Rick A1 - Vaez, Ahmad A1 - von der Heyde, Benedikt A1 - Avery, Christy L A1 - Bis, Joshua C A1 - Dierckx, Bram A1 - van Dongen, Jenny A1 - Gogarten, Stephanie M A1 - Goyette, Philippe A1 - Hernesniemi, Jussi A1 - Huikari, Ville A1 - Hwang, Shih-Jen A1 - Jaju, Deepali A1 - Kerr, Kathleen F A1 - Kluttig, Alexander A1 - Krijthe, Bouwe P A1 - Kumar, Jitender A1 - van der Laan, Sander W A1 - Lyytikäinen, Leo-Pekka A1 - Maihofer, Adam X A1 - Minassian, Arpi A1 - van der Most, Peter J A1 - Müller-Nurasyid, Martina A1 - Nivard, Michel A1 - Salvi, Erika A1 - Stewart, James D A1 - Thayer, Julian F A1 - Verweij, Niek A1 - Wong, Andrew A1 - Zabaneh, Delilah A1 - Zafarmand, Mohammad H A1 - Abdellaoui, Abdel A1 - Albarwani, Sulayma A1 - Albert, Christine A1 - Alonso, Alvaro A1 - Ashar, Foram A1 - Auvinen, Juha A1 - Axelsson, Tomas A1 - Baker, Dewleen G A1 - de Bakker, Paul I W A1 - Barcella, Matteo A1 - Bayoumi, Riad A1 - Bieringa, Rob J A1 - Boomsma, Dorret A1 - Boucher, Gabrielle A1 - Britton, Annie R A1 - Christophersen, Ingrid A1 - Dietrich, Andrea A1 - Ehret, George B A1 - Ellinor, Patrick T A1 - Eskola, Markku A1 - Felix, Janine F A1 - Floras, John S A1 - Franco, Oscar H A1 - Friberg, Peter A1 - Gademan, Maaike G J A1 - Geyer, Mark A A1 - Giedraitis, Vilmantas A1 - Hartman, Catharina A A1 - Hemerich, Daiane A1 - Hofman, Albert A1 - Hottenga, Jouke-Jan A1 - Huikuri, Heikki A1 - Hutri-Kähönen, Nina A1 - Jouven, Xavier A1 - Junttila, Juhani A1 - Juonala, Markus A1 - Kiviniemi, Antti M A1 - Kors, Jan A A1 - Kumari, Meena A1 - Kuznetsova, Tatiana A1 - Laurie, Cathy C A1 - Lefrandt, Joop D A1 - Li, Yong A1 - Li, Yun A1 - Liao, Duanping A1 - Limacher, Marian C A1 - Lin, Henry J A1 - Lindgren, Cecilia M A1 - Lubitz, Steven A A1 - Mahajan, Anubha A1 - McKnight, Barbara A1 - Zu Schwabedissen, Henriette Meyer A1 - Milaneschi, Yuri A1 - Mononen, Nina A1 - Morris, Andrew P A1 - Nalls, Mike A A1 - Navis, Gerjan A1 - Neijts, Melanie A1 - Nikus, Kjell A1 - North, Kari E A1 - O'Connor, Daniel T A1 - Ormel, Johan A1 - Perz, Siegfried A1 - Peters, Annette A1 - Psaty, Bruce M A1 - Raitakari, Olli T A1 - Risbrough, Victoria B A1 - Sinner, Moritz F A1 - Siscovick, David A1 - Smit, Johannes H A1 - Smith, Nicholas L A1 - Soliman, Elsayed Z A1 - Sotoodehnia, Nona A1 - Staessen, Jan A A1 - Stein, Phyllis K A1 - Stilp, Adrienne M A1 - Stolarz-Skrzypek, Katarzyna A1 - Strauch, Konstantin A1 - Sundström, Johan A1 - Swenne, Cees A A1 - Syvänen, Ann-Christine A1 - Tardif, Jean-Claude A1 - Taylor, Kent D A1 - Teumer, Alexander A1 - Thornton, Timothy A A1 - Tinker, Lesley E A1 - Uitterlinden, André G A1 - van Setten, Jessica A1 - Voss, Andreas A1 - Waldenberger, Melanie A1 - Wilhelmsen, Kirk C A1 - Willemsen, Gonneke A1 - Wong, Quenna A1 - Zhang, Zhu-Ming A1 - Zonderman, Alan B A1 - Cusi, Daniele A1 - Evans, Michele K A1 - Greiser, Halina K A1 - van der Harst, Pim A1 - Hassan, Mohammad A1 - Ingelsson, Erik A1 - Jarvelin, Marjo-Riitta A1 - Kääb, Stefan A1 - Kähönen, Mika A1 - Kivimaki, Mika A1 - Kooperberg, Charles A1 - Kuh, Diana A1 - Lehtimäki, Terho A1 - Lind, Lars A1 - Nievergelt, Caroline M A1 - O'Donnell, Chris J A1 - Oldehinkel, Albertine J A1 - Penninx, Brenda A1 - Reiner, Alexander P A1 - Riese, Harriëtte A1 - van Roon, Arie M A1 - Rioux, John D A1 - Rotter, Jerome I A1 - Sofer, Tamar A1 - Stricker, Bruno H A1 - Tiemeier, Henning A1 - Vrijkotte, Tanja G M A1 - Asselbergs, Folkert W A1 - Brundel, Bianca J J M A1 - Heckbert, Susan R A1 - Whitsel, Eric A A1 - den Hoed, Marcel A1 - Snieder, Harold A1 - de Geus, Eco J C AB -

Reduced cardiac vagal control reflected in low heart rate variability (HRV) is associated with greater risks for cardiac morbidity and mortality. In two-stage meta-analyses of genome-wide association studies for three HRV traits in up to 53,174 individuals of European ancestry, we detect 17 genome-wide significant SNPs in eight loci. HRV SNPs tag non-synonymous SNPs (in NDUFA11 and KIAA1755), expression quantitative trait loci (eQTLs) (influencing GNG11, RGS6 and NEO1), or are located in genes preferentially expressed in the sinoatrial node (GNG11, RGS6 and HCN4). Genetic risk scores account for 0.9 to 2.6% of the HRV variance. Significant genetic correlation is found for HRV with heart rate (-0.74 VL - 8 ER - TY - JOUR T1 - A genome-wide interaction analysis of tricyclic/tetracyclic antidepressants and RR and QT intervals: a pharmacogenomics study from the Cohorts for Heart and Aging Research in Genomic Epidemiology (CHARGE) consortium. JF - J Med Genet Y1 - 2017 A1 - Noordam, Raymond A1 - Sitlani, Colleen M A1 - Avery, Christy L A1 - Stewart, James D A1 - Gogarten, Stephanie M A1 - Wiggins, Kerri L A1 - Trompet, Stella A1 - Warren, Helen R A1 - Sun, Fangui A1 - Evans, Daniel S A1 - Li, Xiaohui A1 - Li, Jin A1 - Smith, Albert V A1 - Bis, Joshua C A1 - Brody, Jennifer A A1 - Busch, Evan L A1 - Caulfield, Mark J A1 - Chen, Yii-der I A1 - Cummings, Steven R A1 - Cupples, L Adrienne A1 - Duan, Qing A1 - Franco, Oscar H A1 - Méndez-Giráldez, Rául A1 - Harris, Tamara B A1 - Heckbert, Susan R A1 - van Heemst, Diana A1 - Hofman, Albert A1 - Floyd, James S A1 - Kors, Jan A A1 - Launer, Lenore J A1 - Li, Yun A1 - Li-Gao, Ruifang A1 - Lange, Leslie A A1 - Lin, Henry J A1 - de Mutsert, Renée A1 - Napier, Melanie D A1 - Newton-Cheh, Christopher A1 - Poulter, Neil A1 - Reiner, Alexander P A1 - Rice, Kenneth M A1 - Roach, Jeffrey A1 - Rodriguez, Carlos J A1 - Rosendaal, Frits R A1 - Sattar, Naveed A1 - Sever, Peter A1 - Seyerle, Amanda A A1 - Slagboom, P Eline A1 - Soliman, Elsayed Z A1 - Sotoodehnia, Nona A1 - Stott, David J A1 - Stürmer, Til A1 - Taylor, Kent D A1 - Thornton, Timothy A A1 - Uitterlinden, André G A1 - Wilhelmsen, Kirk C A1 - Wilson, James G A1 - Gudnason, Vilmundur A1 - Jukema, J Wouter A1 - Laurie, Cathy C A1 - Liu, Yongmei A1 - Mook-Kanamori, Dennis O A1 - Munroe, Patricia B A1 - Rotter, Jerome I A1 - Vasan, Ramachandran S A1 - Psaty, Bruce M A1 - Stricker, Bruno H A1 - Whitsel, Eric A AB -

BACKGROUND: Increased heart rate and a prolonged QT interval are important risk factors for cardiovascular morbidity and mortality, and can be influenced by the use of various medications, including tricyclic/tetracyclic antidepressants (TCAs). We aim to identify genetic loci that modify the association between TCA use and RR and QT intervals.

METHODS AND RESULTS: We conducted race/ethnic-specific genome-wide interaction analyses (with HapMap phase II imputed reference panel imputation) of TCAs and resting RR and QT intervals in cohorts of European (n=45 706; n=1417 TCA users), African (n=10 235; n=296 TCA users) and Hispanic/Latino (n=13 808; n=147 TCA users) ancestry, adjusted for clinical covariates. Among the populations of European ancestry, two genome-wide significant loci were identified for RR interval: rs6737205 in BRE (β=56.3, pinteraction=3.9e(-9)) and rs9830388 in UBE2E2 (β=25.2, pinteraction=1.7e(-8)). In Hispanic/Latino cohorts, rs2291477 in TGFBR3 significantly modified the association between TCAs and QT intervals (β=9.3, pinteraction=2.55e(-8)). In the meta-analyses of the other ethnicities, these loci either were excluded from the meta-analyses (as part of quality control), or their effects did not reach the level of nominal statistical significance (pinteraction>0.05). No new variants were identified in these ethnicities. No additional loci were identified after inverse-variance-weighted meta-analysis of the three ancestries.

CONCLUSIONS: Among Europeans, TCA interactions with variants in BRE and UBE2E2 were identified in relation to RR intervals. Among Hispanic/Latinos, variants in TGFBR3 modified the relation between TCAs and QT intervals. Future studies are required to confirm our results.

VL - 54 IS - 5 ER - TY - JOUR T1 - Genetic Variation in Genes Underlying Diverse Dementias May Explain a Small Proportion of Cases in the Alzheimer's Disease Sequencing Project. JF - Dement Geriatr Cogn Disord Y1 - 2018 A1 - Blue, Elizabeth E A1 - Bis, Joshua C A1 - Dorschner, Michael O A1 - Tsuang, Debby W A1 - Barral, Sandra M A1 - Beecham, Gary A1 - Below, Jennifer E A1 - Bush, William S A1 - Butkiewicz, Mariusz A1 - Cruchaga, Carlos A1 - DeStefano, Anita A1 - Farrer, Lindsay A A1 - Goate, Alison A1 - Haines, Jonathan A1 - Jaworski, Jim A1 - Jun, Gyungah A1 - Kunkle, Brian A1 - Kuzma, Amanda A1 - Lee, Jenny J A1 - Lunetta, Kathryn L A1 - Ma, Yiyi A1 - Martin, Eden A1 - Naj, Adam A1 - Nato, Alejandro Q A1 - Navas, Patrick A1 - Nguyen, Hiep A1 - Reitz, Christiane A1 - Reyes, Dolly A1 - Salerno, William A1 - Schellenberg, Gerard D A1 - Seshadri, Sudha A1 - Sohi, Harkirat A1 - Thornton, Timothy A A1 - Valadares, Otto A1 - van Duijn, Cornelia A1 - Vardarajan, Badri N A1 - Wang, Li-San A1 - Boerwinkle, Eric A1 - Dupuis, Josée A1 - Pericak-Vance, Margaret A A1 - Mayeux, Richard A1 - Wijsman, Ellen M AB -

BACKGROUND/AIMS: The Alzheimer's Disease Sequencing Project (ADSP) aims to identify novel genes influencing Alzheimer's disease (AD). Variants within genes known to cause dementias other than AD have previously been associated with AD risk. We describe evidence of co-segregation and associations between variants in dementia genes and clinically diagnosed AD within the ADSP.

METHODS: We summarize the properties of known pathogenic variants within dementia genes, describe the co-segregation of variants annotated as "pathogenic" in ClinVar and new candidates observed in ADSP families, and test for associations between rare variants in dementia genes in the ADSP case-control study. The participants were clinically evaluated for AD, and they represent European, Caribbean Hispanic, and isolate Dutch populations.

RESULTS/CONCLUSIONS: Pathogenic variants in dementia genes were predominantly rare and conserved coding changes. Pathogenic variants within ARSA, CSF1R, and GRN were observed, and candidate variants in GRN and CHMP2B were nominated in ADSP families. An independent case-control study provided evidence of an association between variants in TREM2, APOE, ARSA, CSF1R, PSEN1, and MAPT and risk of AD. Variants in genes which cause dementing disorders may influence the clinical diagnosis of AD in a small proportion of cases within the ADSP.

VL - 45 IS - 1-2 ER - TY - JOUR T1 - Multiethnic Meta-Analysis Identifies RAI1 as a Possible Obstructive Sleep Apnea-related Quantitative Trait Locus in Men. JF - Am J Respir Cell Mol Biol Y1 - 2018 A1 - Chen, Han A1 - Cade, Brian E A1 - Gleason, Kevin J A1 - Bjonnes, Andrew C A1 - Stilp, Adrienne M A1 - Sofer, Tamar A1 - Conomos, Matthew P A1 - Ancoli-Israel, Sonia A1 - Arens, Raanan A1 - Azarbarzin, Ali A1 - Bell, Graeme I A1 - Below, Jennifer E A1 - Chun, Sung A1 - Evans, Daniel S A1 - Ewert, Ralf A1 - Frazier-Wood, Alexis C A1 - Gharib, Sina A A1 - Haba-Rubio, José A1 - Hagen, Erika W A1 - Heinzer, Raphael A1 - Hillman, David R A1 - Johnson, W Craig A1 - Kutalik, Zoltán A1 - Lane, Jacqueline M A1 - Larkin, Emma K A1 - Lee, Seung Ku A1 - Liang, Jingjing A1 - Loredo, Jose S A1 - Mukherjee, Sutapa A1 - Palmer, Lyle J A1 - Papanicolaou, George J A1 - Penzel, Thomas A1 - Peppard, Paul E A1 - Post, Wendy S A1 - Ramos, Alberto R A1 - Rice, Ken A1 - Rotter, Jerome I A1 - Sands, Scott A A1 - Shah, Neomi A A1 - Shin, Chol A1 - Stone, Katie L A1 - Stubbe, Beate A1 - Sul, Jae Hoon A1 - Tafti, Mehdi A1 - Taylor, Kent D A1 - Teumer, Alexander A1 - Thornton, Timothy A A1 - Tranah, Gregory J A1 - Wang, Chaolong A1 - Wang, Heming A1 - Warby, Simon C A1 - Wellman, D Andrew A1 - Zee, Phyllis C A1 - Hanis, Craig L A1 - Laurie, Cathy C A1 - Gottlieb, Daniel J A1 - Patel, Sanjay R A1 - Zhu, Xiaofeng A1 - Sunyaev, Shamil R A1 - Saxena, Richa A1 - Lin, Xihong A1 - Redline, Susan AB -

Obstructive sleep apnea (OSA) is a common heritable disorder displaying marked sexual dimorphism in disease prevalence and progression. Previous genetic association studies have identified a few genetic loci associated with OSA and related quantitative traits, but they have only focused on single ethnic groups, and a large proportion of the heritability remains unexplained. The apnea-hypopnea index (AHI) is a commonly used quantitative measure characterizing OSA severity. Because OSA differs by sex, and the pathophysiology of obstructive events differ in rapid eye movement (REM) and non-REM (NREM) sleep, we hypothesized that additional genetic association signals would be identified by analyzing the NREM/REM-specific AHI and by conducting sex-specific analyses in multiethnic samples. We performed genome-wide association tests for up to 19,733 participants of African, Asian, European, and Hispanic/Latino American ancestry in 7 studies. We identified rs12936587 on chromosome 17 as a possible quantitative trait locus for NREM AHI in men (N = 6,737; P = 1.7 × 10) but not in women (P = 0.77). The association with NREM AHI was replicated in a physiological research study (N = 67; P = 0.047). This locus overlapping the RAI1 gene and encompassing genes PEMT1, SREBF1, and RASD1 was previously reported to be associated with coronary artery disease, lipid metabolism, and implicated in Potocki-Lupski syndrome and Smith-Magenis syndrome, which are characterized by abnormal sleep phenotypes. We also identified gene-by-sex interactions in suggestive association regions, suggesting that genetic variants for AHI appear to vary by sex, consistent with the clinical observations of strong sexual dimorphism.

VL - 58 IS - 3 ER - TY - JOUR T1 - Whole exome sequencing study identifies novel rare and common Alzheimer's-Associated variants involved in immune response and transcriptional regulation. JF - Mol Psychiatry Y1 - 2018 A1 - Bis, Joshua C A1 - Jian, Xueqiu A1 - Kunkle, Brian W A1 - Chen, Yuning A1 - Hamilton-Nelson, Kara L A1 - Bush, William S A1 - Salerno, William J A1 - Lancour, Daniel A1 - Ma, Yiyi A1 - Renton, Alan E A1 - Marcora, Edoardo A1 - Farrell, John J A1 - Zhao, Yi A1 - Qu, Liming A1 - Ahmad, Shahzad A1 - Amin, Najaf A1 - Amouyel, Philippe A1 - Beecham, Gary W A1 - Below, Jennifer E A1 - Campion, Dominique A1 - Charbonnier, Camille A1 - Chung, Jaeyoon A1 - Crane, Paul K A1 - Cruchaga, Carlos A1 - Cupples, L Adrienne A1 - Dartigues, Jean-François A1 - Debette, Stephanie A1 - Deleuze, Jean-Francois A1 - Fulton, Lucinda A1 - Gabriel, Stacey B A1 - Genin, Emmanuelle A1 - Gibbs, Richard A A1 - Goate, Alison A1 - Grenier-Boley, Benjamin A1 - Gupta, Namrata A1 - Haines, Jonathan L A1 - Havulinna, Aki S A1 - Helisalmi, Seppo A1 - Hiltunen, Mikko A1 - Howrigan, Daniel P A1 - Ikram, M Arfan A1 - Kaprio, Jaakko A1 - Konrad, Jan A1 - Kuzma, Amanda A1 - Lander, Eric S A1 - Lathrop, Mark A1 - Lehtimäki, Terho A1 - Lin, Honghuang A1 - Mattila, Kari A1 - Mayeux, Richard A1 - Muzny, Donna M A1 - Nasser, Waleed A1 - Neale, Benjamin A1 - Nho, Kwangsik A1 - Nicolas, Gaël A1 - Patel, Devanshi A1 - Pericak-Vance, Margaret A A1 - Perola, Markus A1 - Psaty, Bruce M A1 - Quenez, Olivier A1 - Rajabli, Farid A1 - Redon, Richard A1 - Reitz, Christiane A1 - Remes, Anne M A1 - Salomaa, Veikko A1 - Sarnowski, Chloe A1 - Schmidt, Helena A1 - Schmidt, Michael A1 - Schmidt, Reinhold A1 - Soininen, Hilkka A1 - Thornton, Timothy A A1 - Tosto, Giuseppe A1 - Tzourio, Christophe A1 - van der Lee, Sven J A1 - van Duijn, Cornelia M A1 - Vardarajan, Badri A1 - Wang, Weixin A1 - Wijsman, Ellen A1 - Wilson, Richard K A1 - Witten, Daniela A1 - Worley, Kim C A1 - Zhang, Xiaoling A1 - Bellenguez, Céline A1 - Lambert, Jean-Charles A1 - Kurki, Mitja I A1 - Palotie, Aarno A1 - Daly, Mark A1 - Boerwinkle, Eric A1 - Lunetta, Kathryn L A1 - DeStefano, Anita L A1 - Dupuis, Josée A1 - Martin, Eden R A1 - Schellenberg, Gerard D A1 - Seshadri, Sudha A1 - Naj, Adam C A1 - Fornage, Myriam A1 - Farrer, Lindsay A AB -

The Alzheimer's Disease Sequencing Project (ADSP) undertook whole exome sequencing in 5,740 late-onset Alzheimer disease (AD) cases and 5,096 cognitively normal controls primarily of European ancestry (EA), among whom 218 cases and 177 controls were Caribbean Hispanic (CH). An age-, sex- and APOE based risk score and family history were used to select cases most likely to harbor novel AD risk variants and controls least likely to develop AD by age 85 years. We tested ~1.5 million single nucleotide variants (SNVs) and 50,000 insertion-deletion polymorphisms (indels) for association to AD, using multiple models considering individual variants as well as gene-based tests aggregating rare, predicted functional, and loss of function variants. Sixteen single variants and 19 genes that met criteria for significant or suggestive associations after multiple-testing correction were evaluated for replication in four independent samples; three with whole exome sequencing (2,778 cases, 7,262 controls) and one with genome-wide genotyping imputed to the Haplotype Reference Consortium panel (9,343 cases, 11,527 controls). The top findings in the discovery sample were also followed-up in the ADSP whole-genome sequenced family-based dataset (197 members of 42 EA families and 501 members of 157 CH families). We identified novel and predicted functional genetic variants in genes previously associated with AD. We also detected associations in three novel genes: IGHG3 (p = 9.8 × 10), an immunoglobulin gene whose antibodies interact with β-amyloid, a long non-coding RNA AC099552.4 (p = 1.2 × 10), and a zinc-finger protein ZNF655 (gene-based p = 5.0 × 10). The latter two suggest an important role for transcriptional regulation in AD pathogenesis.

ER - TY - JOUR T1 - Admixture mapping identifies novel loci for obstructive sleep apnea in Hispanic/Latino Americans. JF - Hum Mol Genet Y1 - 2019 A1 - Wang, Heming A1 - Cade, Brian E A1 - Sofer, Tamar A1 - Sands, Scott A A1 - Chen, Han A1 - Browning, Sharon R A1 - Stilp, Adrienne M A1 - Louie, Tin L A1 - Thornton, Timothy A A1 - Johnson, W Craig A1 - Below, Jennifer E A1 - Conomos, Matthew P A1 - Evans, Daniel S A1 - Gharib, Sina A A1 - Guo, Xiuqing A1 - Wood, Alexis C A1 - Mei, Hao A1 - Yaffe, Kristine A1 - Loredo, Jose S A1 - Ramos, Alberto R A1 - Barrett-Connor, Elizabeth A1 - Ancoli-Israel, Sonia A1 - Zee, Phyllis C A1 - Arens, Raanan A1 - Shah, Neomi A A1 - Taylor, Kent D A1 - Tranah, Gregory J A1 - Stone, Katie L A1 - Hanis, Craig L A1 - Wilson, James G A1 - Gottlieb, Daniel J A1 - Patel, Sanjay R A1 - Rice, Ken A1 - Post, Wendy S A1 - Rotter, Jerome I A1 - Sunyaev, Shamil R A1 - Cai, Jianwen A1 - Lin, Xihong A1 - Purcell, Shaun M A1 - Laurie, Cathy C A1 - Saxena, Richa A1 - Redline, Susan A1 - Zhu, Xiaofeng AB -

Obstructive sleep apnea (OSA) is a common disorder associated with increased risk of cardiovascular disease and mortality. Its prevalence and severity vary across ancestral background. Although OSA traits are heritable, few genetic associations have been identified. To identify genetic regions associated with OSA and improve statistical power, we applied admixture mapping on three primary OSA traits [the apnea hypopnea index (AHI), overnight average oxyhemoglobin saturation (SaO2) and percentage time SaO2 < 90%] and a secondary trait (respiratory event duration) in a Hispanic/Latino American population study of 11 575 individuals with significant variation in ancestral background. Linear mixed models were performed using previously inferred African, European and Amerindian local genetic ancestry markers. Global African ancestry was associated with a lower AHI, higher SaO2 and shorter event duration. Admixture mapping analysis of the primary OSA traits identified local African ancestry at the chromosomal region 2q37 as genome-wide significantly associated with AHI (P < 5.7 × 10-5), and European and Amerindian ancestries at 18q21 suggestively associated with both AHI and percentage time SaO2 < 90% (P < 10-3). Follow-up joint ancestry-SNP association analyses identified novel variants in ferrochelatase (FECH), significantly associated with AHI and percentage time SaO2 < 90% after adjusting for multiple tests (P < 8 × 10-6). These signals contributed to the admixture mapping associations and were replicated in independent cohorts. In this first admixture mapping study of OSA, novel associations with variants in the iron/heme metabolism pathway suggest a role for iron in influencing respiratory traits underlying OSA.

VL - 28 IS - 4 ER - TY - JOUR T1 - Associations of variants In the hexokinase 1 and interleukin 18 receptor regions with oxyhemoglobin saturation during sleep. JF - PLoS Genet Y1 - 2019 A1 - Cade, Brian E A1 - Chen, Han A1 - Stilp, Adrienne M A1 - Louie, Tin A1 - Ancoli-Israel, Sonia A1 - Arens, Raanan A1 - Barfield, Richard A1 - Below, Jennifer E A1 - Cai, Jianwen A1 - Conomos, Matthew P A1 - Evans, Daniel S A1 - Frazier-Wood, Alexis C A1 - Gharib, Sina A A1 - Gleason, Kevin J A1 - Gottlieb, Daniel J A1 - Hillman, David R A1 - Johnson, W Craig A1 - Lederer, David J A1 - Lee, Jiwon A1 - Loredo, Jose S A1 - Mei, Hao A1 - Mukherjee, Sutapa A1 - Patel, Sanjay R A1 - Post, Wendy S A1 - Purcell, Shaun M A1 - Ramos, Alberto R A1 - Reid, Kathryn J A1 - Rice, Ken A1 - Shah, Neomi A A1 - Sofer, Tamar A1 - Taylor, Kent D A1 - Thornton, Timothy A A1 - Wang, Heming A1 - Yaffe, Kristine A1 - Zee, Phyllis C A1 - Hanis, Craig L A1 - Palmer, Lyle J A1 - Rotter, Jerome I A1 - Stone, Katie L A1 - Tranah, Gregory J A1 - Wilson, James G A1 - Sunyaev, Shamil R A1 - Laurie, Cathy C A1 - Zhu, Xiaofeng A1 - Saxena, Richa A1 - Lin, Xihong A1 - Redline, Susan KW - Adolescent KW - Adult KW - Aged KW - Aged, 80 and over KW - Cell Adhesion Molecules, Neuronal KW - Computational Biology KW - Extracellular Matrix Proteins KW - Female KW - Gene Regulatory Networks KW - Genetic Variation KW - Genome-Wide Association Study KW - Hexokinase KW - Humans KW - Hypoxia KW - Interleukin-18 Receptor alpha Subunit KW - Male KW - Middle Aged KW - Nerve Tissue Proteins KW - NLR Family, Pyrin Domain-Containing 3 Protein KW - Oxygen KW - Oxyhemoglobins KW - Polymorphism, Single Nucleotide KW - Quantitative Trait Loci KW - Serine Endopeptidases KW - Sleep KW - Sleep Apnea Syndromes KW - Young Adult AB -

Sleep disordered breathing (SDB)-related overnight hypoxemia is associated with cardiometabolic disease and other comorbidities. Understanding the genetic bases for variations in nocturnal hypoxemia may help understand mechanisms influencing oxygenation and SDB-related mortality. We conducted genome-wide association tests across 10 cohorts and 4 populations to identify genetic variants associated with three correlated measures of overnight oxyhemoglobin saturation: average and minimum oxyhemoglobin saturation during sleep and the percent of sleep with oxyhemoglobin saturation under 90%. The discovery sample consisted of 8,326 individuals. Variants with p < 1 × 10(-6) were analyzed in a replication group of 14,410 individuals. We identified 3 significantly associated regions, including 2 regions in multi-ethnic analyses (2q12, 10q22). SNPs in the 2q12 region associated with minimum SpO2 (rs78136548 p = 2.70 × 10(-10)). SNPs at 10q22 were associated with all three traits including average SpO2 (rs72805692 p = 4.58 × 10(-8)). SNPs in both regions were associated in over 20,000 individuals and are supported by prior associations or functional evidence. Four additional significant regions were detected in secondary sex-stratified and combined discovery and replication analyses, including a region overlapping Reelin, a known marker of respiratory complex neurons.These are the first genome-wide significant findings reported for oxyhemoglobin saturation during sleep, a phenotype of high clinical interest. Our replicated associations with HK1 and IL18R1 suggest that variants in inflammatory pathways, such as the biologically-plausible NLRP3 inflammasome, may contribute to nocturnal hypoxemia.

VL - 15 IS - 4 ER - TY - JOUR T1 - Sequencing of 53,831 diverse genomes from the NHLBI TOPMed Program. JF - Nature Y1 - 2021 A1 - Taliun, Daniel A1 - Harris, Daniel N A1 - Kessler, Michael D A1 - Carlson, Jedidiah A1 - Szpiech, Zachary A A1 - Torres, Raul A1 - Taliun, Sarah A Gagliano A1 - Corvelo, André A1 - Gogarten, Stephanie M A1 - Kang, Hyun Min A1 - Pitsillides, Achilleas N A1 - LeFaive, Jonathon A1 - Lee, Seung-Been A1 - Tian, Xiaowen A1 - Browning, Brian L A1 - Das, Sayantan A1 - Emde, Anne-Katrin A1 - Clarke, Wayne E A1 - Loesch, Douglas P A1 - Shetty, Amol C A1 - Blackwell, Thomas W A1 - Smith, Albert V A1 - Wong, Quenna A1 - Liu, Xiaoming A1 - Conomos, Matthew P A1 - Bobo, Dean M A1 - Aguet, Francois A1 - Albert, Christine A1 - Alonso, Alvaro A1 - Ardlie, Kristin G A1 - Arking, Dan E A1 - Aslibekyan, Stella A1 - Auer, Paul L A1 - Barnard, John A1 - Barr, R Graham A1 - Barwick, Lucas A1 - Becker, Lewis C A1 - Beer, Rebecca L A1 - Benjamin, Emelia J A1 - Bielak, Lawrence F A1 - Blangero, John A1 - Boehnke, Michael A1 - Bowden, Donald W A1 - Brody, Jennifer A A1 - Burchard, Esteban G A1 - Cade, Brian E A1 - Casella, James F A1 - Chalazan, Brandon A1 - Chasman, Daniel I A1 - Chen, Yii-Der Ida A1 - Cho, Michael H A1 - Choi, Seung Hoan A1 - Chung, Mina K A1 - Clish, Clary B A1 - Correa, Adolfo A1 - Curran, Joanne E A1 - Custer, Brian A1 - Darbar, Dawood A1 - Daya, Michelle A1 - de Andrade, Mariza A1 - DeMeo, Dawn L A1 - Dutcher, Susan K A1 - Ellinor, Patrick T A1 - Emery, Leslie S A1 - Eng, Celeste A1 - Fatkin, Diane A1 - Fingerlin, Tasha A1 - Forer, Lukas A1 - Fornage, Myriam A1 - Franceschini, Nora A1 - Fuchsberger, Christian A1 - Fullerton, Stephanie M A1 - Germer, Soren A1 - Gladwin, Mark T A1 - Gottlieb, Daniel J A1 - Guo, Xiuqing A1 - Hall, Michael E A1 - He, Jiang A1 - Heard-Costa, Nancy L A1 - Heckbert, Susan R A1 - Irvin, Marguerite R A1 - Johnsen, Jill M A1 - Johnson, Andrew D A1 - Kaplan, Robert A1 - Kardia, Sharon L R A1 - Kelly, Tanika A1 - Kelly, Shannon A1 - Kenny, Eimear E A1 - Kiel, Douglas P A1 - Klemmer, Robert A1 - Konkle, Barbara A A1 - Kooperberg, Charles A1 - Köttgen, Anna A1 - Lange, Leslie A A1 - Lasky-Su, Jessica A1 - Levy, Daniel A1 - Lin, Xihong A1 - Lin, Keng-Han A1 - Liu, Chunyu A1 - Loos, Ruth J F A1 - Garman, Lori A1 - Gerszten, Robert A1 - Lubitz, Steven A A1 - Lunetta, Kathryn L A1 - Mak, Angel C Y A1 - Manichaikul, Ani A1 - Manning, Alisa K A1 - Mathias, Rasika A A1 - McManus, David D A1 - McGarvey, Stephen T A1 - Meigs, James B A1 - Meyers, Deborah A A1 - Mikulla, Julie L A1 - Minear, Mollie A A1 - Mitchell, Braxton D A1 - Mohanty, Sanghamitra A1 - Montasser, May E A1 - Montgomery, Courtney A1 - Morrison, Alanna C A1 - Murabito, Joanne M A1 - Natale, Andrea A1 - Natarajan, Pradeep A1 - Nelson, Sarah C A1 - North, Kari E A1 - O'Connell, Jeffrey R A1 - Palmer, Nicholette D A1 - Pankratz, Nathan A1 - Peloso, Gina M A1 - Peyser, Patricia A A1 - Pleiness, Jacob A1 - Post, Wendy S A1 - Psaty, Bruce M A1 - Rao, D C A1 - Redline, Susan A1 - Reiner, Alexander P A1 - Roden, Dan A1 - Rotter, Jerome I A1 - Ruczinski, Ingo A1 - Sarnowski, Chloe A1 - Schoenherr, Sebastian A1 - Schwartz, David A A1 - Seo, Jeong-Sun A1 - Seshadri, Sudha A1 - Sheehan, Vivien A A1 - Sheu, Wayne H A1 - Shoemaker, M Benjamin A1 - Smith, Nicholas L A1 - Smith, Jennifer A A1 - Sotoodehnia, Nona A1 - Stilp, Adrienne M A1 - Tang, Weihong A1 - Taylor, Kent D A1 - Telen, Marilyn A1 - Thornton, Timothy A A1 - Tracy, Russell P A1 - Van Den Berg, David J A1 - Vasan, Ramachandran S A1 - Viaud-Martinez, Karine A A1 - Vrieze, Scott A1 - Weeks, Daniel E A1 - Weir, Bruce S A1 - Weiss, Scott T A1 - Weng, Lu-Chen A1 - Willer, Cristen J A1 - Zhang, Yingze A1 - Zhao, Xutong A1 - Arnett, Donna K A1 - Ashley-Koch, Allison E A1 - Barnes, Kathleen C A1 - Boerwinkle, Eric A1 - Gabriel, Stacey A1 - Gibbs, Richard A1 - Rice, Kenneth M A1 - Rich, Stephen S A1 - Silverman, Edwin K A1 - Qasba, Pankaj A1 - Gan, Weiniu A1 - Papanicolaou, George J A1 - Nickerson, Deborah A A1 - Browning, Sharon R A1 - Zody, Michael C A1 - Zöllner, Sebastian A1 - Wilson, James G A1 - Cupples, L Adrienne A1 - Laurie, Cathy C A1 - Jaquish, Cashell E A1 - Hernandez, Ryan D A1 - O'Connor, Timothy D A1 - Abecasis, Goncalo R AB -

The Trans-Omics for Precision Medicine (TOPMed) programme seeks to elucidate the genetic architecture and biology of heart, lung, blood and sleep disorders, with the ultimate goal of improving diagnosis, treatment and prevention of these diseases. The initial phases of the programme focused on whole-genome sequencing of individuals with rich phenotypic data and diverse backgrounds. Here we describe the TOPMed goals and design as well as the available resources and early insights obtained from the sequence data. The resources include a variant browser, a genotype imputation server, and genomic and phenotypic data that are available through dbGaP (Database of Genotypes and Phenotypes). In the first 53,831 TOPMed samples, we detected more than 400 million single-nucleotide and insertion or deletion variants after alignment with the reference genome. Additional previously undescribed variants were detected through assembly of unmapped reads and customized analysis in highly variable loci. Among the more than 400 million detected variants, 97% have frequencies of less than 1% and 46% are singletons that are present in only one individual (53% among unrelated individuals). These rare variants provide insights into mutational processes and recent human evolutionary history. The extensive catalogue of genetic variation in TOPMed studies provides unique opportunities for exploring the contributions of rare and noncoding sequence variants to phenotypic variation. Furthermore, combining TOPMed haplotypes with modern imputation methods improves the power and reach of genome-wide association studies to include variants down to a frequency of approximately 0.01%.

VL - 590 IS - 7845 ER - TY - JOUR T1 - Whole genome sequence analyses of eGFR in 23,732 people representing multiple ancestries in the NHLBI trans-omics for precision medicine (TOPMed) consortium. JF - EBioMedicine Y1 - 2021 A1 - Lin, Bridget M A1 - Grinde, Kelsey E A1 - Brody, Jennifer A A1 - Breeze, Charles E A1 - Raffield, Laura M A1 - Mychaleckyj, Josyf C A1 - Thornton, Timothy A A1 - Perry, James A A1 - Baier, Leslie J A1 - de Las Fuentes, Lisa A1 - Guo, Xiuqing A1 - Heavner, Benjamin D A1 - Hanson, Robert L A1 - Hung, Yi-Jen A1 - Qian, Huijun A1 - Hsiung, Chao A A1 - Hwang, Shih-Jen A1 - Irvin, Margaret R A1 - Jain, Deepti A1 - Kelly, Tanika N A1 - Kobes, Sayuko A1 - Lange, Leslie A1 - Lash, James P A1 - Li, Yun A1 - Liu, Xiaoming A1 - Mi, Xuenan A1 - Musani, Solomon K A1 - Papanicolaou, George J A1 - Parsa, Afshin A1 - Reiner, Alex P A1 - Salimi, Shabnam A1 - Sheu, Wayne H-H A1 - Shuldiner, Alan R A1 - Taylor, Kent D A1 - Smith, Albert V A1 - Smith, Jennifer A A1 - Tin, Adrienne A1 - Vaidya, Dhananjay A1 - Wallace, Robert B A1 - Yamamoto, Kenichi A1 - Sakaue, Saori A1 - Matsuda, Koichi A1 - Kamatani, Yoichiro A1 - Momozawa, Yukihide A1 - Yanek, Lisa R A1 - Young, Betsi A A1 - Zhao, Wei A1 - Okada, Yukinori A1 - Abecasis, Gonzalo A1 - Psaty, Bruce M A1 - Arnett, Donna K A1 - Boerwinkle, Eric A1 - Cai, Jianwen A1 - Yii-Der Chen, Ida A1 - Correa, Adolfo A1 - Cupples, L Adrienne A1 - He, Jiang A1 - Kardia, Sharon Lr A1 - Kooperberg, Charles A1 - Mathias, Rasika A A1 - Mitchell, Braxton D A1 - Nickerson, Deborah A A1 - Turner, Steve T A1 - Vasan, Ramachandran S A1 - Rotter, Jerome I A1 - Levy, Daniel A1 - Kramer, Holly J A1 - Köttgen, Anna A1 - Rich, Stephen S A1 - Lin, Dan-Yu A1 - Browning, Sharon R A1 - Franceschini, Nora AB -

BACKGROUND: Genetic factors that influence kidney traits have been understudied for low frequency and ancestry-specific variants.

METHODS: We combined whole genome sequencing (WGS) data from 23,732 participants from 10 NHLBI Trans-Omics for Precision Medicine (TOPMed) Program multi-ethnic studies to identify novel loci for estimated glomerular filtration rate (eGFR). Participants included European, African, East Asian, and Hispanic ancestries. We applied linear mixed models using a genetic relationship matrix estimated from the WGS data and adjusted for age, sex, study, and ethnicity.

FINDINGS: When testing single variants, we identified three novel loci driven by low frequency variants more commonly observed in non-European ancestry (PRKAA2, rs180996919, minor allele frequency [MAF] 0.04%, P = 6.1 × 10; METTL8, rs116951054, MAF 0.09%, P = 4.5 × 10; and MATK, rs539182790, MAF 0.05%, P = 3.4 × 10). We also replicated two known loci for common variants (rs2461702, MAF=0.49, P = 1.2 × 10, nearest gene GATM, and rs71147340, MAF=0.34, P = 3.3 × 10, CDK12). Testing aggregated variants within a gene identified the MAF gene. A statistical approach based on local ancestry helped to identify replication samples for ancestry-specific variants.

INTERPRETATION: This study highlights challenges in studying variants influencing kidney traits that are low frequency in populations and more common in non-European ancestry.

VL - 63 ER - TY - JOUR T1 - Whole-genome sequencing in diverse subjects identifies genetic correlates of leukocyte traits: The NHLBI TOPMed program. JF - Am J Hum Genet Y1 - 2021 A1 - Mikhaylova, Anna V A1 - McHugh, Caitlin P A1 - Polfus, Linda M A1 - Raffield, Laura M A1 - Boorgula, Meher Preethi A1 - Blackwell, Thomas W A1 - Brody, Jennifer A A1 - Broome, Jai A1 - Chami, Nathalie A1 - Chen, Ming-Huei A1 - Conomos, Matthew P A1 - Cox, Corey A1 - Curran, Joanne E A1 - Daya, Michelle A1 - Ekunwe, Lynette A1 - Glahn, David C A1 - Heard-Costa, Nancy A1 - Highland, Heather M A1 - Hobbs, Brian D A1 - Ilboudo, Yann A1 - Jain, Deepti A1 - Lange, Leslie A A1 - Miller-Fleming, Tyne W A1 - Min, Nancy A1 - Moon, Jee-Young A1 - Preuss, Michael H A1 - Rosen, Jonathon A1 - Ryan, Kathleen A1 - Smith, Albert V A1 - Sun, Quan A1 - Surendran, Praveen A1 - de Vries, Paul S A1 - Walter, Klaudia A1 - Wang, Zhe A1 - Wheeler, Marsha A1 - Yanek, Lisa R A1 - Zhong, Xue A1 - Abecasis, Goncalo R A1 - Almasy, Laura A1 - Barnes, Kathleen C A1 - Beaty, Terri H A1 - Becker, Lewis C A1 - Blangero, John A1 - Boerwinkle, Eric A1 - Butterworth, Adam S A1 - Chavan, Sameer A1 - Cho, Michael H A1 - Choquet, Helene A1 - Correa, Adolfo A1 - Cox, Nancy A1 - DeMeo, Dawn L A1 - Faraday, Nauder A1 - Fornage, Myriam A1 - Gerszten, Robert E A1 - Hou, Lifang A1 - Johnson, Andrew D A1 - Jorgenson, Eric A1 - Kaplan, Robert A1 - Kooperberg, Charles A1 - Kundu, Kousik A1 - Laurie, Cecelia A A1 - Lettre, Guillaume A1 - Lewis, Joshua P A1 - Li, Bingshan A1 - Li, Yun A1 - Lloyd-Jones, Donald M A1 - Loos, Ruth J F A1 - Manichaikul, Ani A1 - Meyers, Deborah A A1 - Mitchell, Braxton D A1 - Morrison, Alanna C A1 - Ngo, Debby A1 - Nickerson, Deborah A A1 - Nongmaithem, Suraj A1 - North, Kari E A1 - O'Connell, Jeffrey R A1 - Ortega, Victor E A1 - Pankratz, Nathan A1 - Perry, James A A1 - Psaty, Bruce M A1 - Rich, Stephen S A1 - Soranzo, Nicole A1 - Rotter, Jerome I A1 - Silverman, Edwin K A1 - Smith, Nicholas L A1 - Tang, Hua A1 - Tracy, Russell P A1 - Thornton, Timothy A A1 - Vasan, Ramachandran S A1 - Zein, Joe A1 - Mathias, Rasika A A1 - Reiner, Alexander P A1 - Auer, Paul L KW - Asthma KW - Biomarkers KW - Dermatitis, Atopic KW - Genetic Predisposition to Disease KW - Genome, Human KW - Genome-Wide Association Study KW - Humans KW - Leukocytes KW - National Heart, Lung, and Blood Institute (U.S.) KW - Phenotype KW - Polymorphism, Single Nucleotide KW - Prognosis KW - Proteome KW - Pulmonary Disease, Chronic Obstructive KW - Quantitative Trait Loci KW - United Kingdom KW - United States KW - Whole Genome Sequencing AB -

Many common and rare variants associated with hematologic traits have been discovered through imputation on large-scale reference panels. However, the majority of genome-wide association studies (GWASs) have been conducted in Europeans, and determining causal variants has proved challenging. We performed a GWAS of total leukocyte, neutrophil, lymphocyte, monocyte, eosinophil, and basophil counts generated from 109,563,748 variants in the autosomes and the X chromosome in the Trans-Omics for Precision Medicine (TOPMed) program, which included data from 61,802 individuals of diverse ancestry. We discovered and replicated 7 leukocyte trait associations, including (1) the association between a chromosome X, pseudo-autosomal region (PAR), noncoding variant located between cytokine receptor genes (CSF2RA and CLRF2) and lower eosinophil count; and (2) associations between single variants found predominantly among African Americans at the S1PR3 (9q22.1) and HBB (11p15.4) loci and monocyte and lymphocyte counts, respectively. We further provide evidence indicating that the newly discovered eosinophil-lowering chromosome X PAR variant might be associated with reduced susceptibility to common allergic diseases such as atopic dermatitis and asthma. Additionally, we found a burden of very rare FLT3 (13q12.2) variants associated with monocyte counts. Together, these results emphasize the utility of whole-genome sequencing in diverse samples in identifying associations missed by European-ancestry-driven GWASs.

VL - 108 IS - 10 ER - TY - JOUR T1 - Polygenic transcriptome risk scores for COPD and lung function improve cross-ethnic portability of prediction in the NHLBI TOPMed program. JF - Am J Hum Genet Y1 - 2022 A1 - Hu, Xiaowei A1 - Qiao, Dandi A1 - Kim, Wonji A1 - Moll, Matthew A1 - Balte, Pallavi P A1 - Lange, Leslie A A1 - Bartz, Traci M A1 - Kumar, Rajesh A1 - Li, Xingnan A1 - Yu, Bing A1 - Cade, Brian E A1 - Laurie, Cecelia A A1 - Sofer, Tamar A1 - Ruczinski, Ingo A1 - Nickerson, Deborah A A1 - Muzny, Donna M A1 - Metcalf, Ginger A A1 - Doddapaneni, Harshavardhan A1 - Gabriel, Stacy A1 - Gupta, Namrata A1 - Dugan-Perez, Shannon A1 - Cupples, L Adrienne A1 - Loehr, Laura R A1 - Jain, Deepti A1 - Rotter, Jerome I A1 - Wilson, James G A1 - Psaty, Bruce M A1 - Fornage, Myriam A1 - Morrison, Alanna C A1 - Vasan, Ramachandran S A1 - Washko, George A1 - Rich, Stephen S A1 - O'Connor, George T A1 - Bleecker, Eugene A1 - Kaplan, Robert C A1 - Kalhan, Ravi A1 - Redline, Susan A1 - Gharib, Sina A A1 - Meyers, Deborah A1 - Ortega, Victor A1 - Dupuis, Josée A1 - London, Stephanie J A1 - Lappalainen, Tuuli A1 - Oelsner, Elizabeth C A1 - Silverman, Edwin K A1 - Barr, R Graham A1 - Thornton, Timothy A A1 - Wheeler, Heather E A1 - Cho, Michael H A1 - Im, Hae Kyung A1 - Manichaikul, Ani AB -

While polygenic risk scores (PRSs) enable early identification of genetic risk for chronic obstructive pulmonary disease (COPD), predictive performance is limited when the discovery and target populations are not well matched. Hypothesizing that the biological mechanisms of disease are shared across ancestry groups, we introduce a PrediXcan-derived polygenic transcriptome risk score (PTRS) to improve cross-ethnic portability of risk prediction. We constructed the PTRS using summary statistics from application of PrediXcan on large-scale GWASs of lung function (forced expiratory volume in 1 s [FEV] and its ratio to forced vital capacity [FEV/FVC]) in the UK Biobank. We examined prediction performance and cross-ethnic portability of PTRS through smoking-stratified analyses both on 29,381 multi-ethnic participants from TOPMed population/family-based cohorts and on 11,771 multi-ethnic participants from TOPMed COPD-enriched studies. Analyses were carried out for two dichotomous COPD traits (moderate-to-severe and severe COPD) and two quantitative lung function traits (FEV and FEV/FVC). While the proposed PTRS showed weaker associations with disease than PRS for European ancestry, the PTRS showed stronger association with COPD than PRS for African Americans (e.g., odds ratio [OR] = 1.24 [95% confidence interval [CI]: 1.08-1.43] for PTRS versus 1.10 [0.96-1.26] for PRS among heavy smokers with ≥ 40 pack-years of smoking) for moderate-to-severe COPD. Cross-ethnic portability of the PTRS was significantly higher than the PRS (paired t test p < 2.2 × 10 with portability gains ranging from 5% to 28%) for both dichotomous COPD traits and across all smoking strata. Our study demonstrates the value of PTRS for improved cross-ethnic portability compared to PRS in predicting COPD risk.

ER -