Suchergebnisse

The file associated with this record is under embargo until 12 months after publication, in accordance with the publisher's self-archiving policy. The full text may be available through the publisher links provided above. ; BACKGROUND: Aortic valve stenosis (AVS) and coronary artery disease (CAD) have a significant genetic contribution and commonly co-exist. To compare and contrast genetic determinants of the two diseases, we investigated associations of the LPA and 9p21 loci, i.e. the two strongest CAD risk loci, with risk of AVS. METHODS: We genotyped the CAD-associated variants at the LPA (rs10455872) and 9p21 loci (rs1333049) in the GeneCAST (Genetics of Calcific Aortic STenosis) Consortium and conducted a meta-analysis for their association with AVS. Cases and controls were stratified by CAD status. External validation of findings was undertaken in five cohorts including 7880 cases and 851,152 controls. RESULTS: In the meta-analysis including 4651 cases and 8231 controls the CAD-associated allele at the LPA locus was associated with increased risk of AVS (OR 1.37; 95%CI 1.24-1.52, p = 6.9 × 10-10) with a larger effect size in those without CAD (OR 1.53; 95%CI 1.31-1.79) compared to those with CAD (OR 1.27; 95%CI 1.12-1.45). The CAD-associated allele at 9p21 was associated with a trend towards lower risk of AVS (OR 0.93; 95%CI 0.88-0.99, p = 0.014). External validation confirmed the association of the LPA risk allele with risk of AVS (OR 1.37; 95%CI 1.27-1.47), again with a higher effect size in those without CAD. The small protective effect of the 9p21 CAD risk allele could not be replicated (OR 0.98; 95%CI 0.95-1.02). CONCLUSIONS: Our study confirms the association of the LPA locus with risk of AVS, with a higher effect in those without concomitant CAD. Overall, 9p21 was not associated with AVS. ; Collection and genotyping of the GeneCAST Leicester cohorts were supported by the Leicester NIHR Biomedical Centre. NJS and CPN are funded by the British Heart Foundation and NJS is a NIHR Senior Investigator. IRM is supported by a NHS Education for Scotland/Chief Scientist Office Postdoctoral Clinical Lectureship [grant number: PCL17/07]. CCL acknowledges support from the British Heart Foundation [grant numbers: PG/16/32/32132 and PG/14/4/30539]. JGS was supported by the European Research Council, Swedish Heart-Lung Foundation, the Wallenberg Center for Molecular Medicine at Lund University, the Swedish Research Council, the Crafoord Foundation, governmental funding of clinical research within the Swedish National Health Service, Skåne University Hospital in Lund, and the Scania county. TK is funded by the Corona Foundation as part of the Junior Research Group Translational Cardiovascular Genomics [S199/10070/2017]. ; Peer-reviewed ; Post-print

BACKGROUND: Epidemiological studies show that high circulating cystatin C is associated with risk of cardiovascular disease (CVD), independent of creatinine-based renal function measurements. It is unclear whether this relationship is causal, arises from residual confounding, and/or is a consequence of reverse causation. OBJECTIVES: The aim of this study was to use Mendelian randomization to investigate whether cystatin C is causally related to CVD in the general population. METHODS: We incorporated participant data from 16 prospective cohorts (n = 76,481) with 37,126 measures of cystatin C and added genetic data from 43 studies (n = 252,216) with 63,292 CVD events. We used the common variant rs911119 in CST3 as an instrumental variable to investigate the causal role of cystatin C in CVD, including coronary heart disease, ischemic stroke, and heart failure. RESULTS: Cystatin C concentrations were associated with CVD risk after adjusting for age, sex, and traditional risk factors (relative risk: 1.82 per doubling of cystatin C; 95% confidence interval [CI]: 1.56 to 2.13; p = 2.12 × 10(-14)). The minor allele of rs911119 was associated with decreased serum cystatin C (6.13% per allele; 95% CI: 5.75 to 6.50; p = 5.95 × 10(-211)), explaining 2.8% of the observed variation in cystatin C. Mendelian randomization analysis did not provide evidence for a causal role of cystatin C, with a causal relative risk for CVD of 1.00 per doubling cystatin C (95% CI: 0.82 to 1.22; p = 0.994), which was statistically different from the observational estimate (p = 1.6 × 10(-5)). A causal effect of cystatin C was not detected for any individual component of CVD. CONCLUSIONS: Mendelian randomization analyses did not support a causal role of cystatin C in the etiology of CVD. As such, therapeutics targeted at lowering circulating cystatin C are unlikely to be effective in preventing CVD. ; The individual study sponsor(s) had no role in the study design; in the collection, analysis, and interpretation of data; in the writing of the report; and in the decision to submit the paper for publication. Dr. Isgum is supported by research grants from Pie Medical Imaging, 3Mensio Medical Imaging B.V., the NWO and Foundation for Technological Sciences under Project 12726, The Netherlands Organization for Health Research and Development, and the Dutch Cancer Society. Dr. Arpegård has received funding through the Stockholm County Council (combined clinical residency and PhD training program). Dr. Amouyel has received personal fees from Servier, Hoffman Laroche, Total, Genoscreen, Alzprotect, Fondation Plan Alzheimer, and Takeda outside of the submitted work; and has shares in Genoscreen. Dr. Morris is a Wellcome Trust Senior Fellow in Basic Biomedical Science under grant number WT098017. Dr. Worrall has received compensation for his role as deputy editor of the Journal of Neurology; and has received National Institutes of Health funding through the National Institute of Neurological Disorders and Stroke (U-01 NS069208) and National Human Genome Research Institute (U-01 HG005160). Dr. Samani is supported by the British Heart Foundation (BHF); and is a National Institute for Health Research Senior Investigator. Dr. Nelson is supported by the BHF. Dr. Franco works in ErasmusAGE, a center for aging research across the life course funded by Nestlé Nutrition (Nestec Ltd.), Metagenics Inc., and AXA; Nestlé Nutrition (Nestec Ltd.), Metagenics Inc., and AXA had no role in design and conduct of the study; collection, management, analysis, and interpretation of the data; and preparation, review, or approval of the manuscript. Dr. Patel is supported by a BHF Intermediate Fellowship. Dr. Koenig has received funds through NGFNplus, project number 01GS0834; has received research grants from Abbott, Roche Diagnostics, Beckmann, and Singulex; has received honorarium for lectures from AstraZeneca, Novartis, Merck Sharp & Dohme, Amgen, and Actavis; and has served as a consultant for Novartis, Pfizer, The Medicines Company, Amgen, AstraZeneca, Merck Sharp & Dohme, and GlaxoSmithKline. Dr. Jukema is an Established Clinical Investigator of the Netherlands Heart Foundation (grant 2001 D 032). Dr. Svensson has received a grant from the Swedish Society of Medicine (SLS-412071). Dr. Kivimaki has received funding through the Medical Research Council (K013351), Economic and Social Research Council, and National Institutes of Health (HL36310). Dr. Dehghan is supported by a Netherlands Organization for Scientific Research (NWO) grant (VENI, 916.12.154) and the EUR Fellowship; and has received consultancy and research support from Metagenics Inc. (outside the scope of this work). Dr. Ingelsson is supported by grants from Göran Gustafsson Foundation, Swedish Heart-Lung Foundation (20140422), Knut and Alice Wallenberg Foundation (Knut och Alice Wallenbergs Stiftelse), European Research Council (ERC-StG-335395), Swedish Diabetes Foundation (Diabetesfonden; grant no. 2013-024), and the Swedish Research Council (VR; grant no. 2012-1397). Dr. de Bakker is an employee of Vertex Pharmaceuticals. Dr. Ärnlöv was funded by the Swedish Research Council (2012-1727, 2012-2215), Swedish Heart-Lung Foundation, Thuréus Foundation, the Marianne and Marcus Wallenberg Foundation, Dalarna University, and Uppsala University. Dr. Asselbergs is supported by a Dekker scholarship-Junior Staff Member 2014T001–Netherlands Heart Foundation and UCL Hospitals National Institute for Health Research Biomedical Research Centre. The research leading to these results has received funding from the European Union Seventh Framework Programme FP7/2007-2013 under grant agreement n° HEALTH-F2-2013-601456 (CVgenes-at-target). All other authors have reported that they have no relationships relevant to the contents of this paper to disclose. ; Peer-reviewed ; Publisher Version