Psoriasis and Cardiometabolic Traits: Modest Association but Distinct Genetic Architectures.

Manja Koch, Hansjörg Baurecht, Janina S Ried, Elke Rodriguez, Sabrina Schlesinger, Natalie Volks, Christian Gieger, Ina-Maria Rückert, Luise Heinrich, Christina Willenborg, Catherine Smith, Annette Peters, Barbara Thorand, Wolfgang Koenig, Claudia Lamina, Henning Jansen, Florian Kronenberg, Jochen Seissler, Joachim Thiery, Wolfgang Rathmann, Heribert Schunkert, Jeanette Erdmann, Jonathan Barker, Rajan P Nair, Lam C Tsoi, James T Elder, Ulrich Mrowietz, Michael Weichenthal, Sören Mucha, Stefan Schreiber, Andre Franke, Jochen Schmitt, Wolfgang Lieb, Stephan Weidinger
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Journal of investigative dermatology
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Psoriasis has been linked to cardiometabolic diseases, but epidemiological findings are inconsistent. We investigated the association between psoriasis and cardiometabolic outcomes in a German cross-sectional study (n=4.185) and a prospective cohort of German Health Insurance beneficiaries (n=1.811.098). A potential genetic overlap was explored using genome-wide data from >22.000 coronary artery disease (CAD) and >4.000 psoriasis cases, and with a dense genotyping study of cardiometabolic risk loci on 927 psoriasis cases and 3.717 controls. Controlling for major confounders, in the cross-sectional analysis psoriasis was significantly associated with type 2 diabetes (T2D, adjusted odd''s ratio OR=2.36; 95% confidence interval CI=1.26-4.41) and myocardial infarction (MI, OR=2.26, 95% CI=1.03-4.96). In the longitudinal study, psoriasis slightly increased the risk for incident T2D (adjusted relative risk RR=1.11; 95%CI=1.08-1.14) and MI (RR=1.14; 95%CI=1.06-1.22), with highest risk increments in systemically treated psoriasis, which accounted for 11 and 17 excess cases of T2D and MI per 10,000 person-years. Except for weak signals from within the MHC, there was no evidence for genetic risk loci shared between psoriasis and cardiometabolic traits. Our findings suggest that psoriasis, in particular severe psoriasis, increases risk for T2D and MI, and that the genetic architecture of psoriasis and cardiometabolic traits is largely distinct.Journal of Investigative Dermatology accepted article preview online, 19 January 2015. doi:10.1038/jid.2015.8.