%0 Journal Article %J PLoS Genet %D 2017 %T Single-trait and multi-trait genome-wide association analyses identify novel loci for blood pressure in African-ancestry populations. %A Liang, Jingjing %A Le, Thu H %A Edwards, Digna R Velez %A Tayo, Bamidele O %A Gaulton, Kyle J %A Smith, Jennifer A %A Lu, Yingchang %A Jensen, Richard A %A Chen, Guanjie %A Yanek, Lisa R %A Schwander, Karen %A Tajuddin, Salman M %A Sofer, Tamar %A Kim, Wonji %A Kayima, James %A McKenzie, Colin A %A Fox, Ervin %A Nalls, Michael A %A Young, J Hunter %A Sun, Yan V %A Lane, Jacqueline M %A Cechova, Sylvia %A Zhou, Jie %A Tang, Hua %A Fornage, Myriam %A Musani, Solomon K %A Wang, Heming %A Lee, Juyoung %A Adeyemo, Adebowale %A Dreisbach, Albert W %A Forrester, Terrence %A Chu, Pei-Lun %A Cappola, Anne %A Evans, Michele K %A Morrison, Alanna C %A Martin, Lisa W %A Wiggins, Kerri L %A Hui, Qin %A Zhao, Wei %A Jackson, Rebecca D %A Ware, Erin B %A Faul, Jessica D %A Reiner, Alex P %A Bray, Michael %A Denny, Joshua C %A Mosley, Thomas H %A Palmas, Walter %A Guo, Xiuqing %A Papanicolaou, George J %A Penman, Alan D %A Polak, Joseph F %A Rice, Kenneth %A Taylor, Ken D %A Boerwinkle, Eric %A Bottinger, Erwin P %A Liu, Kiang %A Risch, Neil %A Hunt, Steven C %A Kooperberg, Charles %A Zonderman, Alan B %A Laurie, Cathy C %A Becker, Diane M %A Cai, Jianwen %A Loos, Ruth J F %A Psaty, Bruce M %A Weir, David R %A Kardia, Sharon L R %A Arnett, Donna K %A Won, Sungho %A Edwards, Todd L %A Redline, Susan %A Cooper, Richard S %A Rao, D C %A Rotter, Jerome I %A Rotimi, Charles %A Levy, Daniel %A Chakravarti, Aravinda %A Zhu, Xiaofeng %A Franceschini, Nora %K African Americans %K Animals %K Basic Helix-Loop-Helix Transcription Factors %K Blood Pressure %K Cadherins %K Case-Control Studies %K Female %K Genetic Loci %K Genome-Wide Association Study %K Humans %K Hypertension %K Male %K Membrane Proteins %K Mice %K Multifactorial Inheritance %K Polymorphism, Single Nucleotide %X

Hypertension is a leading cause of global disease, mortality, and disability. While individuals of African descent suffer a disproportionate burden of hypertension and its complications, they have been underrepresented in genetic studies. To identify novel susceptibility loci for blood pressure and hypertension in people of African ancestry, we performed both single and multiple-trait genome-wide association analyses. We analyzed 21 genome-wide association studies comprised of 31,968 individuals of African ancestry, and validated our results with additional 54,395 individuals from multi-ethnic studies. These analyses identified nine loci with eleven independent variants which reached genome-wide significance (P < 1.25×10-8) for either systolic and diastolic blood pressure, hypertension, or for combined traits. Single-trait analyses identified two loci (TARID/TCF21 and LLPH/TMBIM4) and multiple-trait analyses identified one novel locus (FRMD3) for blood pressure. At these three loci, as well as at GRP20/CDH17, associated variants had alleles common only in African-ancestry populations. Functional annotation showed enrichment for genes expressed in immune and kidney cells, as well as in heart and vascular cells/tissues. Experiments driven by these findings and using angiotensin-II induced hypertension in mice showed altered kidney mRNA expression of six genes, suggesting their potential role in hypertension. Our study provides new evidence for genes related to hypertension susceptibility, and the need to study African-ancestry populations in order to identify biologic factors contributing to hypertension.

%B PLoS Genet %V 13 %P e1006728 %8 2017 May %G eng %N 5 %R 10.1371/journal.pgen.1006728 %0 Journal Article %J Hum Mol Genet %D 2019 %T Admixture mapping identifies novel loci for obstructive sleep apnea in Hispanic/Latino Americans. %A Wang, Heming %A Cade, Brian E %A Sofer, Tamar %A Sands, Scott A %A Chen, Han %A Browning, Sharon R %A Stilp, Adrienne M %A Louie, Tin L %A Thornton, Timothy A %A Johnson, W Craig %A Below, Jennifer E %A Conomos, Matthew P %A Evans, Daniel S %A Gharib, Sina A %A Guo, Xiuqing %A Wood, Alexis C %A Mei, Hao %A Yaffe, Kristine %A Loredo, Jose S %A Ramos, Alberto R %A Barrett-Connor, Elizabeth %A Ancoli-Israel, Sonia %A Zee, Phyllis C %A Arens, Raanan %A Shah, Neomi A %A Taylor, Kent D %A Tranah, Gregory J %A Stone, Katie L %A Hanis, Craig L %A Wilson, James G %A Gottlieb, Daniel J %A Patel, Sanjay R %A Rice, Ken %A Post, Wendy S %A Rotter, Jerome I %A Sunyaev, Shamil R %A Cai, Jianwen %A Lin, Xihong %A Purcell, Shaun M %A Laurie, Cathy C %A Saxena, Richa %A Redline, Susan %A Zhu, Xiaofeng %X

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.

%B Hum Mol Genet %V 28 %P 675-687 %8 2019 02 15 %G eng %N 4 %R 10.1093/hmg/ddy387 %0 Journal Article %J PLoS Genet %D 2019 %T Associations of variants In the hexokinase 1 and interleukin 18 receptor regions with oxyhemoglobin saturation during sleep. %A Cade, Brian E %A Chen, Han %A Stilp, Adrienne M %A Louie, Tin %A Ancoli-Israel, Sonia %A Arens, Raanan %A Barfield, Richard %A Below, Jennifer E %A Cai, Jianwen %A Conomos, Matthew P %A Evans, Daniel S %A Frazier-Wood, Alexis C %A Gharib, Sina A %A Gleason, Kevin J %A Gottlieb, Daniel J %A Hillman, David R %A Johnson, W Craig %A Lederer, David J %A Lee, Jiwon %A Loredo, Jose S %A Mei, Hao %A Mukherjee, Sutapa %A Patel, Sanjay R %A Post, Wendy S %A Purcell, Shaun M %A Ramos, Alberto R %A Reid, Kathryn J %A Rice, Ken %A Shah, Neomi A %A Sofer, Tamar %A Taylor, Kent D %A Thornton, Timothy A %A Wang, Heming %A Yaffe, Kristine %A Zee, Phyllis C %A Hanis, Craig L %A Palmer, Lyle J %A Rotter, Jerome I %A Stone, Katie L %A Tranah, Gregory J %A Wilson, James G %A Sunyaev, Shamil R %A Laurie, Cathy C %A Zhu, Xiaofeng %A Saxena, Richa %A Lin, Xihong %A Redline, Susan %K Adolescent %K Adult %K Aged %K Aged, 80 and over %K Cell Adhesion Molecules, Neuronal %K Computational Biology %K Extracellular Matrix Proteins %K Female %K Gene Regulatory Networks %K Genetic Variation %K Genome-Wide Association Study %K Hexokinase %K Humans %K Hypoxia %K Interleukin-18 Receptor alpha Subunit %K Male %K Middle Aged %K Nerve Tissue Proteins %K NLR Family, Pyrin Domain-Containing 3 Protein %K Oxygen %K Oxyhemoglobins %K Polymorphism, Single Nucleotide %K Quantitative Trait Loci %K Serine Endopeptidases %K Sleep %K Sleep Apnea Syndromes %K Young Adult %X

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.

%B PLoS Genet %V 15 %P e1007739 %8 2019 04 %G eng %N 4 %R 10.1371/journal.pgen.1007739 %0 Journal Article %J EBioMedicine %D 2021 %T Whole genome sequence analyses of eGFR in 23,732 people representing multiple ancestries in the NHLBI trans-omics for precision medicine (TOPMed) consortium. %A Lin, Bridget M %A Grinde, Kelsey E %A Brody, Jennifer A %A Breeze, Charles E %A Raffield, Laura M %A Mychaleckyj, Josyf C %A Thornton, Timothy A %A Perry, James A %A Baier, Leslie J %A de Las Fuentes, Lisa %A Guo, Xiuqing %A Heavner, Benjamin D %A Hanson, Robert L %A Hung, Yi-Jen %A Qian, Huijun %A Hsiung, Chao A %A Hwang, Shih-Jen %A Irvin, Margaret R %A Jain, Deepti %A Kelly, Tanika N %A Kobes, Sayuko %A Lange, Leslie %A Lash, James P %A Li, Yun %A Liu, Xiaoming %A Mi, Xuenan %A Musani, Solomon K %A Papanicolaou, George J %A Parsa, Afshin %A Reiner, Alex P %A Salimi, Shabnam %A Sheu, Wayne H-H %A Shuldiner, Alan R %A Taylor, Kent D %A Smith, Albert V %A Smith, Jennifer A %A Tin, Adrienne %A Vaidya, Dhananjay %A Wallace, Robert B %A Yamamoto, Kenichi %A Sakaue, Saori %A Matsuda, Koichi %A Kamatani, Yoichiro %A Momozawa, Yukihide %A Yanek, Lisa R %A Young, Betsi A %A Zhao, Wei %A Okada, Yukinori %A Abecasis, Gonzalo %A Psaty, Bruce M %A Arnett, Donna K %A Boerwinkle, Eric %A Cai, Jianwen %A Yii-Der Chen, Ida %A Correa, Adolfo %A Cupples, L Adrienne %A He, Jiang %A Kardia, Sharon Lr %A Kooperberg, Charles %A Mathias, Rasika A %A Mitchell, Braxton D %A Nickerson, Deborah A %A Turner, Steve T %A Vasan, Ramachandran S %A Rotter, Jerome I %A Levy, Daniel %A Kramer, Holly J %A Köttgen, Anna %A Rich, Stephen S %A Lin, Dan-Yu %A Browning, Sharon R %A Franceschini, Nora %X

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.

%B EBioMedicine %V 63 %P 103157 %8 2021 Jan %G eng %R 10.1016/j.ebiom.2020.103157 %0 Journal Article %J Nat Commun %D 2024 %T X-chromosome and kidney function: evidence from a multi-trait genetic analysis of 908,697 individuals reveals sex-specific and sex-differential findings in genes regulated by androgen response elements. %A Scholz, Markus %A Horn, Katrin %A Pott, Janne %A Wuttke, Matthias %A Kühnapfel, Andreas %A Nasr, M Kamal %A Kirsten, Holger %A Li, Yong %A Hoppmann, Anselm %A Gorski, Mathias %A Ghasemi, Sahar %A Li, Man %A Tin, Adrienne %A Chai, Jin-Fang %A Cocca, Massimiliano %A Wang, Judy %A Nutile, Teresa %A Akiyama, Masato %A Åsvold, Bjørn Olav %A Bansal, Nisha %A Biggs, Mary L %A Boutin, Thibaud %A Brenner, Hermann %A Brumpton, Ben %A Burkhardt, Ralph %A Cai, Jianwen %A Campbell, Archie %A Campbell, Harry %A Chalmers, John %A Chasman, Daniel I %A Chee, Miao Ling %A Chee, Miao Li %A Chen, Xu %A Cheng, Ching-Yu %A Cifkova, Renata %A Daviglus, Martha %A Delgado, Graciela %A Dittrich, Katalin %A Edwards, Todd L %A Endlich, Karlhans %A Michael Gaziano, J %A Giri, Ayush %A Giulianini, Franco %A Gordon, Scott D %A Gudbjartsson, Daniel F %A Hallan, Stein %A Hamet, Pavel %A Hartman, Catharina A %A Hayward, Caroline %A Heid, Iris M %A Hellwege, Jacklyn N %A Holleczek, Bernd %A Holm, Hilma %A Hutri-Kähönen, Nina %A Hveem, Kristian %A Isermann, Berend %A Jonas, Jost B %A Joshi, Peter K %A Kamatani, Yoichiro %A Kanai, Masahiro %A Kastarinen, Mika %A Khor, Chiea Chuen %A Kiess, Wieland %A Kleber, Marcus E %A Körner, Antje %A Kovacs, Peter %A Krajcoviechova, Alena %A Kramer, Holly %A Krämer, Bernhard K %A Kuokkanen, Mikko %A Kähönen, Mika %A Lange, Leslie A %A Lash, James P %A Lehtimäki, Terho %A Li, Hengtong %A Lin, Bridget M %A Liu, Jianjun %A Loeffler, Markus %A Lyytikäinen, Leo-Pekka %A Magnusson, Patrik K E %A Martin, Nicholas G %A Matsuda, Koichi %A Milaneschi, Yuri %A Mishra, Pashupati P %A Mononen, Nina %A Montgomery, Grant W %A Mook-Kanamori, Dennis O %A Mychaleckyj, Josyf C %A März, Winfried %A Nauck, Matthias %A Nikus, Kjell %A Nolte, Ilja M %A Noordam, Raymond %A Okada, Yukinori %A Olafsson, Isleifur %A Oldehinkel, Albertine J %A Penninx, Brenda W J H %A Perola, Markus %A Pirastu, Nicola %A Polasek, Ozren %A Porteous, David J %A Poulain, Tanja %A Psaty, Bruce M %A Rabelink, Ton J %A Raffield, Laura M %A Raitakari, Olli T %A Rasheed, Humaira %A Reilly, Dermot F %A Rice, Kenneth M %A Richmond, Anne %A Ridker, Paul M %A Rotter, Jerome I %A Rudan, Igor %A Sabanayagam, Charumathi %A Salomaa, Veikko %A Schneiderman, Neil %A Schöttker, Ben %A Sims, Mario %A Snieder, Harold %A Stark, Klaus J %A Stefansson, Kari %A Stocker, Hannah %A Stumvoll, Michael %A Sulem, Patrick %A Sveinbjornsson, Gardar %A Svensson, Per O %A Tai, E-Shyong %A Taylor, Kent D %A Tayo, Bamidele O %A Teren, Andrej %A Tham, Yih-Chung %A Thiery, Joachim %A Thio, Chris H L %A Thomas, Laurent F %A Tremblay, Johanne %A Tönjes, Anke %A van der Most, Peter J %A Vitart, Veronique %A Völker, Uwe %A Wang, Ya Xing %A Wang, Chaolong %A Wei, Wen Bin %A Whitfield, John B %A Wild, Sarah H %A Wilson, James F %A Winkler, Thomas W %A Wong, Tien-Yin %A Woodward, Mark %A Sim, Xueling %A Chu, Audrey Y %A Feitosa, Mary F %A Thorsteinsdottir, Unnur %A Hung, Adriana M %A Teumer, Alexander %A Franceschini, Nora %A Parsa, Afshin %A Köttgen, Anna %A Schlosser, Pascal %A Pattaro, Cristian %K Androgens %K Chromosomes, Human, X %K Female %K Genetic Predisposition to Disease %K Genome-Wide Association Study %K Humans %K Kidney %K Male %K Polymorphism, Single Nucleotide %K Response Elements %K Tetraspanins %X

X-chromosomal genetic variants are understudied but can yield valuable insights into sexually dimorphic human traits and diseases. We performed a sex-stratified cross-ancestry X-chromosome-wide association meta-analysis of seven kidney-related traits (n = 908,697), identifying 23 loci genome-wide significantly associated with two of the traits: 7 for uric acid and 16 for estimated glomerular filtration rate (eGFR), including four novel eGFR loci containing the functionally plausible prioritized genes ACSL4, CLDN2, TSPAN6 and the female-specific DRP2. Further, we identified five novel sex-interactions, comprising male-specific effects at FAM9B and AR/EDA2R, and three sex-differential findings with larger genetic effect sizes in males at DCAF12L1 and MST4 and larger effect sizes in females at HPRT1. All prioritized genes in loci showing significant sex-interactions were located next to androgen response elements (ARE). Five ARE genes showed sex-differential expressions. This study contributes new insights into sex-dimorphisms of kidney traits along with new prioritized gene targets for further molecular research.

%B Nat Commun %V 15 %P 586 %8 2024 Jan 18 %G eng %N 1 %R 10.1038/s41467-024-44709-1