1. New data and an old puzzle: the negative association between schizophrenia and rheumatoid arthritis
- Author
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Lee, S Hong, Byrne, Enda M, Hultman, Christina M, Kähler, Anna, Vinkhuyzen, Anna AE, Ripke, Stephan, Andreassen, Ole A, Frisell, Thomas, Gusev, Alexander, Hu, Xinli, Karlsson, Robert, Mantzioris, Vasilis X, McGrath, John J, Mehta, Divya, Stahl, Eli A, Zhao, Qiongyi, Kendler, Kenneth S, Sullivan, Patrick F, Price, Alkes L, O’Donovan, Michael, Okada, Yukinori, Mowry, Bryan J, Raychaudhuri, Soumya, Wray, Naomi R, Byerley, William, Cahn, Wiepke, Cantor, Rita M, Cichon, Sven, Cormican, Paul, Curtis, David, Djurovic, Srdjan, Escott-Price, Valentina, Gejman, Pablo V, Georgieva, Lyudmila, Giegling, Ina, Hansen, Thomas F, Ingason, Andrés, Kim, Yunjung, Konte, Bettina, Lee, Phil H, McIntosh, Andrew, McQuillin, Andrew, Morris, Derek W, Nöthen, Markus M, O’Dushlaine, Colm, Olincy, Ann, Olsen, Line, Pato, Carlos N, Pato, Michele T, Pickard, Benjamin S, Posthuma, Danielle, Rasmussen, Henrik B, Rietschel, Marcella, Rujescu, Dan, Schulze, Thomas G, Silverman, Jeremy M, Thirumalai, Srinivasa, Werge, Thomas, Agartz, Ingrid, Amin, Farooq, Azevedo, Maria H, Bass, Nicholas, Black, Donald W, Blackwood, Douglas HR, Bruggeman, Richard, Buccola, Nancy G, Choudhury, Khalid, Cloninger, Robert C, Corvin, Aiden, Craddock, Nicholas, Daly, Mark J, Datta, Susmita, Donohoe, Gary J, Duan, Jubao, Dudbridge, Frank, Fanous, Ayman, Freedman, Robert, Freimer, Nelson B, Friedl, Marion, Gill, Michael, Gurling, Hugh, De Haan, Lieuwe, Hamshere, Marian L, Hartmann, Annette M, Holmans, Peter A, Kahn, René S, Keller, Matthew C, Kenny, Elaine, Kirov, George K, Krabbendam, Lydia, Krasucki, Robert, Lawrence, Jacob, Lencz, Todd, Levinson, Douglas F, Lieberman, Jeffrey A, Lin, Dan-Yu, Linszen, Don H, Magnusson, Patrik KE, Maier, Wolfgang, and Malhotra, Anil K
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Epidemiology ,Health Sciences ,Human Genome ,Mental Health ,Brain Disorders ,Autoimmune Disease ,Schizophrenia ,Clinical Research ,Arthritis ,Serious Mental Illness ,Genetics ,Aetiology ,2.1 Biological and endogenous factors ,Inflammatory and immune system ,Mental health ,Adolescent ,Adult ,Arthritis ,Rheumatoid ,Cohort Studies ,Cross-Sectional Studies ,Female ,Gene-Environment Interaction ,Genetic Predisposition to Disease ,Genetic Variation ,Genome-Wide Association Study ,Humans ,Male ,Middle Aged ,Polymorphism ,Single Nucleotide ,Young Adult ,Schizophrenia Working Group of the Psychiatric Genomics Consortium and Rheumatoid Arthritis Consortium International ,Schizophrenia Working Group of the Psychiatric Genomics Consortium Authors ,Schizophrenia Working Group of the Psychiatric Genomics Consortium Collaborators ,Rheumatoid Arthritis Consortium International Authors ,Rheumatoid Arthritis Consortium International Collaborators ,Statistics ,Public Health and Health Services ,Public health - Abstract
BackgroundA long-standing epidemiological puzzle is the reduced rate of rheumatoid arthritis (RA) in those with schizophrenia (SZ) and vice versa. Traditional epidemiological approaches to determine if this negative association is underpinned by genetic factors would test for reduced rates of one disorder in relatives of the other, but sufficiently powered data sets are difficult to achieve. The genomics era presents an alternative paradigm for investigating the genetic relationship between two uncommon disorders.MethodsWe use genome-wide common single nucleotide polymorphism (SNP) data from independently collected SZ and RA case-control cohorts to estimate the SNP correlation between the disorders. We test a genotype X environment (GxE) hypothesis for SZ with environment defined as winter- vs summer-born.ResultsWe estimate a small but significant negative SNP-genetic correlation between SZ and RA (-0.046, s.e. 0.026, P = 0.036). The negative correlation was stronger for the SNP set attributed to coding or regulatory regions (-0.174, s.e. 0.071, P = 0.0075). Our analyses led us to hypothesize a gene-environment interaction for SZ in the form of immune challenge. We used month of birth as a proxy for environmental immune challenge and estimated the genetic correlation between winter-born and non-winter born SZ to be significantly less than 1 for coding/regulatory region SNPs (0.56, s.e. 0.14, P = 0.00090).ConclusionsOur results are consistent with epidemiological observations of a negative relationship between SZ and RA reflecting, at least in part, genetic factors. Results of the month of birth analysis are consistent with pleiotropic effects of genetic variants dependent on environmental context.
- Published
- 2015