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1. Inference following multiple imputation for generalized additive models: an investigation of the median p-value rule with applications to the Pulmonary Hypertension Association Registry and Colorado COVID-19 hospitalization data

Author

Matthew A. Bolt, Samantha MaWhinney, Jack W. Pattee, Kristine M. Erlandson, David B. Badesch, and Ryan A. Peterson

Subjects
Missing data, Pooling results, Simulation study, Splines, Elevation, Pulmonary arterial hypertension, Medicine (General), R5-920
Abstract

Abstract Background Missing data prove troublesome in data analysis; at best they reduce a study’s statistical power and at worst they induce bias in parameter estimates. Multiple imputation via chained equations is a popular technique for dealing with missing data. However, techniques for combining and pooling results from fitted generalized additive models (GAMs) after multiple imputation have not been well explored. Methods We simulated missing data under MCAR, MAR, and MNAR frameworks and utilized random forest and predictive mean matching imputation to investigate a variety of rules for combining GAMs after multiple imputation with binary and normally distributed outcomes. We compared multiple pooling procedures including the “D2” method, the Cauchy combination test, and the median p-value (MPV) rule. The MPV rule involves simply computing and reporting the median p-value across all imputations. Other ad hoc methods such as a mean p-value rule and a single imputation method are investigated. The viability of these methods in pooling results from B-splines is also examined for normal outcomes. An application of these various pooling techniques is then performed on two case studies, one which examines the effect of elevation on a six-minute walk distance (a normal outcome) for patients with pulmonary arterial hypertension, and the other which examines risk factors for intubation in hospitalized COVID-19 patients (a dichotomous outcome). Results In comparison to the results from generalized additive models fit on full datasets, the median p-value rule performs as well as if not better than the other methods examined. In situations where the alternative hypothesis is true, the Cauchy combination test appears overpowered and alternative methods appear underpowered, while the median p-value rule yields results similar to those from analyses of complete data. Conclusions For pooling results after fitting GAMs to multiply imputed datasets, the median p-value is a simple yet useful approach which balances both power to detect important associations and control of Type I errors.

Published
2022
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2. Cross-Ancestry Investigation of Venous Thromboembolism Genomic Predictors

Author

Florian, Thibord, Derek, Klarin, Jennifer A, Brody, Ming-Huei, Chen, Michael G, Levin, Daniel I, Chasman, Ellen L, Goode, Kristian, Hveem, Maris, Teder-Laving, Angel, Martinez-Perez, Dylan, Aïssi, Delphine, Daian-Bacq, Kaoru, Ito, Pradeep, Natarajan, Pamela L, Lutsey, Girish N, Nadkarni, Paul S, de Vries, Gabriel, Cuellar-Partida, Brooke N, Wolford, Jack W, Pattee, Charles, Kooperberg, Sigrid K, Braekkan, Ruifang, Li-Gao, Noemie, Saut, Corriene, Sept, Marine, Germain, Renae L, Judy, Kerri L, Wiggins, Darae, Ko, Christopher J, O'Donnell, Kent D, Taylor, Franco, Giulianini, Mariza, De Andrade, Therese H, Nøst, Anne, Boland, Jean-Philippe, Empana, Satoshi, Koyama, Thomas, Gilliland, Ron, Do, Jennifer E, Huffman, Xin, Wang, Wei, Zhou, Jose, Manuel Soria, Juan, Carlos Souto, Nathan, Pankratz, Jeffery, Haessler, Kristian, Hindberg, Frits R, Rosendaal, Constance, Turman, Robert, Olaso, Rachel L, Kember, Traci M, Bartz, Julie A, Lynch, Susan R, Heckbert, Sebastian M, Armasu, Ben, Brumpton, David M, Smadja, Xavier, Jouven, Issei, Komuro, Katharine R, Clapham, Ruth J F, Loos, Cristen J, Willer, Maria, Sabater-Lleal, James S, Pankow, Alexander P, Reiner, Vania M, Morelli, Paul M, Ridker, Astrid van Hylckama, Vlieg, Jean-François, Deleuze, Peter, Kraft, Daniel J, Rader, Kyung, Min Lee, Bruce M, Psaty, Anne, Heidi Skogholt, Joseph, Emmerich, Pierre, Suchon, Stephen S, Rich, Ha My T, Vy, Weihong, Tang, Rebecca D, Jackson, John-Bjarne, Hansen, Pierre-Emmanuel, Morange, Christopher, Kabrhel, David-Alexandre, Trégouët, Scott M, Damrauer, Andrew D, Johnson, Nicholas L, Smith, Bordeaux population health (BPH), Université de Bordeaux (UB)-Institut de Santé Publique, d'Épidémiologie et de Développement (ISPED)-Institut National de la Santé et de la Recherche Médicale (INSERM), Centre recherche en CardioVasculaire et Nutrition = Center for CardioVascular and Nutrition research (C2VN), and Aix Marseille Université (AMU)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)

Subjects
genome-wide association study, venous thromboembolism, Quantitative Trait Loci, Thrombosis, Genomics, Venous Thromboembolism, Polymorphism, Single Nucleotide, meta-analysis, Meta-analysis, Physiology (medical), Venous thrombosis, Genetics, Humans, genetics, [SDV.SPEE]Life Sciences [q-bio]/Santé publique et épidémiologie, Genetic Predisposition to Disease, venous thrombosis, Cardiology and Cardiovascular Medicine, Genome-Wide Association Study
Abstract

Background: Venous thromboembolism (VTE) is a life-threatening vascular event with environmental and genetic determinants. Recent VTE genome-wide association studies (GWAS) meta-analyses involved nearly 30 000 VTE cases and identified up to 40 genetic loci associated with VTE risk, including loci not previously suspected to play a role in hemostasis. The aim of our research was to expand discovery of new genetic loci associated with VTE by using cross-ancestry genomic resources. Methods: We present new cross-ancestry meta-analyzed GWAS results involving up to 81 669 VTE cases from 30 studies, with replication of novel loci in independent populations and loci characterization through in silico genomic interrogations. Results: In our genetic discovery effort that included 55 330 participants with VTE (47 822 European, 6320 African, and 1188 Hispanic ancestry), we identified 48 novel associations, of which 34 were replicated after correction for multiple testing. In our combined discovery-replication analysis (81 669 VTE participants) and ancestry-stratified meta-analyses (European, African, and Hispanic), we identified another 44 novel associations, which are new candidate VTE-associated loci requiring replication. In total, across all GWAS meta-analyses, we identified 135 independent genomic loci significantly associated with VTE risk. A genetic risk score of the significantly associated loci in Europeans identified a 6-fold increase in risk for those in the top 1% of scores compared with those with average scores. We also identified 31 novel transcript associations in transcriptome-wide association studies and 8 novel candidate genes with protein quantitative-trait locus Mendelian randomization analyses. In silico interrogations of hemostasis and hematology traits and a large phenome-wide association analysis of the 135 GWAS loci provided insights to biological pathways contributing to VTE, with some loci contributing to VTE through well-characterized coagulation pathways and others providing new data on the role of hematology traits, particularly platelet function. Many of the replicated loci are outside of known or currently hypothesized pathways to thrombosis. Conclusions: Our cross-ancestry GWAS meta-analyses identified new loci associated with VTE. These findings highlight new pathways to thrombosis and provide novel molecules that may be useful in the development of improved antithrombosis treatments.

Published
2022
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3. Multi-phenotype analyses of hemostatic traits with cardiovascular events reveal novel genetic associations

Author

Gerard Temprano‐Sagrera, Colleen M. Sitlani, William P. Bone, Miguel Martin‐Bornez, Benjamin F. Voight, Alanna C. Morrison, Scott M. Damrauer, Paul S. de Vries, Nicholas L. Smith, Maria Sabater‐Lleal, Abbas Dehghan, Adam S Heath, Alanna C Morrison, Alex P Reiner, Andrew Johnson, Anne Richmond, Annette Peters, Astrid van Hylckama Vlieg, Barbara McKnight, Bruce M Psaty, Caroline Hayward, Cavin Ward‐Caviness, Christopher O’Donnell, Daniel Chasman, David P Strachan, David A Tregouet, Dennis Mook‐Kanamori, Dipender Gill, Florian Thibord, Folkert W Asselbergs, Frank W.G. Leebeek, Frits R Rosendaal, Gail Davies, Georg Homuth, Gerard Temprano, Harry Campbell, Herman A Taylor, Jan Bressler, Jennifer E Huffman, Jerome I Rotter, Jie Yao, James F Wilson, Joshua C Bis, Julie M Hahn, Karl C Desch, Kerri L Wiggins, Laura M Raffield, Lawrence F Bielak, Lisa R Yanek, Marcus E Kleber, Martina Mueller, Maryam Kavousi, Massimo Mangino, Melissa Liu, Michael R Brown, Matthew P Conomos, Min‐A Jhun, Ming‐Huei Chen, Moniek P.M. de Maat, Nathan Pankratz, Nicholas L Smith, Patricia A Peyser, Paul Elliot, Paul S de Vries, Peng Wei, Philipp S Wild, Pierre E Morange, Pim van der Harst, Qiong Yang, Ngoc‐Quynh Le, Riccardo Marioni, Ruifang Li, Scott M Damrauer, Simon R Cox, Stella Trompet, Stephan B Felix, Uwe Völker, Weihong Tang, Wolfgang Koenig, J. Wouter Jukema, Xiuqing Guo, Sara Lindstrom, Lu Wang, Erin N Smith, William Gordon, Mariza de Andrade, Jennifer A Brody, Jack W Pattee, Jeffrey Haessler, Ben M Brumpton, Daniel I Chasman, Pierre Suchon, Constance Turman, Marine Germain, James MacDonald, Sigrid K Braekkan, Sebastian M Armasu, Rabecca D Jackson, Jonas B Nielsen, Franco Giulianini, Marja K Puurunen, Manal Ibrahim, Susan R Heckbert, Theo K Bammler, Kelly A Frazer, Bryan M McCauley, Kent Taylor, James S Pankow, Alexander P Reiner, Maiken E Gabrielsen, Jean‐François Deleuze, Chris J O’Donnell, Jihye Kim, Peter Kraft, John‐Bjarne Hansen, John A Heit, Charles Kooperberg, Kristian Hveem, Paul M Ridker, Pierre‐Emmanuel Morange, Andrew D Johnson, Christopher Kabrhel, David‐Alexandre Trégouët, Rainer Malik, Ganesh Chauhan, Matthew Traylor, Muralidharan Sargurupremraj, Yukinori Okada, Aniket Mishra, Loes Rutten‐Jacobs, Anne‐Katrin Giese, Sander W van der Laan, Solveig Gretarsdottir, Christopher D Anderson, Michael Chong, Hieab HH Adams, Tetsuro Ago, Peter Almgren, Philippe Amouyel, Hakan Ay, Traci M Bartz, Oscar R Benavente, Steve Bevan, Giorgio B Boncoraglio, Robert D Brown, Adam S Butterworth, Caty Carrera, Cara L Carty, Wei‐Min Chen, John W Cole, Adolfo Correa, Ioana Cotlarciuc, Carlos Cruchaga, John Danesh, Paul IW de Bakker, Anita L DeStefano, Marcel den Hoed, Qing Duan, Stefan T Engelter, Guido J Falcone, Rebecca F Gottesman, Raji P Grewal, Vilmundur Gudnason, Stefan Gustafsson, Tamara B Harris, Ahamad Hassan, Aki S Havulinna, Elizabeth G Holliday, George Howard, Fang‐Chi Hsu, Hyacinth I Hyacinth, M Arfan Ikram, Erik Ingelsson, Marguerite R Irvin, Xueqiu Jian, Jordi Jiménez‐Conde, Julie A Johnson, J Wouter Jukema, Masahiro Kanai, Keith L Keene, Brett M Kissela, Dawn O Kleindorfer, Michiaki Kubo, Leslie A Lange, Carl D Langefeld, Claudia Langenberg, Lenore J Launer, Jin‐Moo Lee, Robin Lemmens, Didier Leys, Cathryn M Lewis, Wei‐Yu Lin, Arne G Lindgren, Erik Lorentzen, Patrik K Magnusson, Jane Maguire, Ani Manichaikul, Patrick F McArdle, James F Meschia, Braxton D Mitchell, Thomas H Mosley, Michael A Nalls, Toshiharu Ninomiya, Martin J O’Donnell, Sara L Pulit, Kristiina Rannikmäe, Kathryn M Rexrode, Kenneth Rice, Stephen S Rich, Natalia S Rost, Peter M Rothwell, Tatjana Rundek, Ralph L Sacco, Saori Sakaue, Michele M Sale, Veikko Salomaa, Bishwa R Sapkota, Reinhold Schmidt, Carsten O Schmidt, Ulf Schminke, Pankaj Sharma, Agnieszka Slowik, Cathie LM Sudlow, Christian Tanislav, Turgut Tatlisumak, Kent D Taylor, Vincent NS Thijs, Gudmar Thorleifsson, Unnur Thorsteinsdottir, Steffen Tiedt, Christophe Tzourio, Cornelia M van Duijn, Matthew Walters, Nicholas J Wareham, Sylvia Wassertheil‐Smoller, James G Wilson, Salim Yusuf, Najaf Amin, Hugo S Aparicio, Donna K Arnett, John Attia, Alexa S Beiser, Claudine Berr, Julie E Buring, Mariana Bustamante, Valeria Caso, Yu‐Ching Cheng, Seung Hoan Choi, Ayesha Chowhan, Natalia Cullell, Jean‐François Dartigues, Hossein Delavaran, Pilar Delgado, Marcus Dörr, Gunnar Engström, Ian Ford, Wander S Gurpreet, Anders Hamsten, Laura Heitsch, Atsushi Hozawa, Laura Ibanez, Andreea Ilinca, Martin Ingelsson, Motoki Iwasaki, Rebecca D Jackson, Katarina Jood, Pekka Jousilahti, Sara Kaffashian, Lalit Kalra, Masahiro Kamouchi, Takanari Kitazono, Olafur Kjartansson, Manja Kloss, Peter J Koudstaal, Jerzy Krupinski, Daniel L Labovitz, Cathy C Laurie, Christopher R Levi, Linxin Li, Lars Lind, Cecilia M Lindgren, Vasileios Lioutas, Yong Mei Liu, Oscar L Lopez, Hirata Makoto, Nicolas Martinez‐Majander, Koichi Matsuda, Naoko Minegishi, Joan Montaner, Andrew P Morris, Elena Muiño, Martina Müller‐Nurasyid, Bo Norrving, Soichi Ogishima, Eugenio A Parati, Leema Reddy Peddareddygari, Nancy L Pedersen, Joanna Pera, Markus Perola, Alessandro Pezzini, Silvana Pileggi, Raquel Rabionet, Iolanda Riba‐Llena, Marta Ribasés, Jose R Romero, Jaume Roquer, Anthony G Rudd, Antti‐Pekka Sarin, Ralhan Sarju, Chloe Sarnowski, Makoto Sasaki, Claudia L Satizabal, Mamoru Satoh, Naveed Sattar, Norie Sawada, Gerli Sibolt, Ásgeir Sigurdsson, Albert Smith, Kenji Sobue, Carolina Soriano‐Tárraga, Tara Stanne, O Colin Stine, David J Stott, Konstantin Strauch, Takako Takai, Hideo Tanaka, Kozo Tanno, Alexander Teumer, Liisa Tomppo, Nuria P Torres‐Aguila, Emmanuel Touze, Shoichiro Tsugane, Andre G Uitterlinden, Einar M Valdimarsson, Sven J van der Lee, Henry Völzke, Kenji Wakai, David Weir, Stephen R Williams, Charles DA Wolfe, Quenna Wong, Huichun Xu, Taiki Yamaji, Dharambir K Sanghera, Olle Melander, Christina Jern, Daniel Strbian, Israel Fernandez‐Cadenas, W T Longstreth, Arndt Rolfs, Jun Hata, Daniel Woo, Jonathan Rosand, Guillaume Pare, Jemma C Hopewell, Danish Saleheen, Kari Stefansson, Bradford B Worrall, Steven J Kittner, Sudha Seshadri, Myriam Fornage, Hugh S Markus, Joanna MM Howson, Yoichiro Kamatani, Stephanie Debette, Martin Dichgans, and VU University medical center

Subjects
Hemostasis, genome-wide association study, genetic pleiotropy, Hematology, Polymorphism, Single Nucleotide, Hemostatics, blood coagulation, cardiovascular diseases, Phenotype, Cardiovascular Diseases, Tissue Plasminogen Activator, hemostasis, Humans, Genetic Predisposition to Disease, Factor XI, Genome-Wide Association Study
Abstract

Background: Multi-phenotype analysis of genetically correlated phenotypes can increase the statistical power to detect loci associated with multiple traits, leading to the discovery of novel loci. This is the first study to date to comprehensively analyze the shared genetic effects within different hemostatic traits, and between these and their associated disease outcomes. Objectives: To discover novel genetic associations by combining summary data of correlated hemostatic traits and disease events. Methods: Summary statistics from genome wide-association studies (GWAS) from seven hemostatic traits (factor VII [FVII], factor VIII [FVIII], von Willebrand factor [VWF] factor XI [FXI], fibrinogen, tissue plasminogen activator [tPA], plasminogen activator inhibitor 1 [PAI-1]) and three major cardiovascular (CV) events (venous thromboembolism [VTE], coronary artery disease [CAD], ischemic stroke [IS]), were combined in 27 multi-trait combinations using metaUSAT. Genetic correlations between phenotypes were calculated using Linkage Disequilibrium Score Regression (LDSC). Newly associated loci were investigated for colocalization. We considered a significance threshold of 1.85 × 10−9 obtained after applying Bonferroni correction for the number of multi-trait combinations performed (n = 27). Results: Across the 27 multi-trait analyses, we found 4 novel pleiotropic loci (XXYLT1, KNG1, SUGP1/MAU2, TBL2/MLXIPL) that were not significant in the original individual datasets, were not described in previous GWAS for the individual traits, and that presented a common associated variant between the studied phenotypes. Conclusions: The discovery of four novel loci contributes to the understanding of the relationship between hemostasis and CV events and elucidate common genetic factors between these traits.

Published
2022
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4. Interleukin-6 Signaling Effects on Ischemic Stroke and Other Cardiovascular Outcomes

Author

Marios K. Georgakis, Rainer Malik, Dipender Gill, Nora Franceschini, Cathie L. M. Sudlow, Martin Dichgans, Sara Lindstrom, Lu Wang, Erin N. Smith, William Gordon, Astrid van Hylckama Vlieg, Mariza de Andrade, Jennifer A. Brody, Jack W. Pattee, Jeffrey Haessler, Ben M. Brumpton, Daniel I. Chasman, Pierre Suchon, Ming-Huei Chen, Constance Turman, Marine Germain, Kerri L. Wiggins, and James MacDonald

Published
2020
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