Genetic overlap between multiple sclerosis and several cardiovascular disease risk factors

Author:

Wang Yunpeng1,Bos Steffan D2,Harbo Hanne F2,Thompson Wesley K3,Schork Andrew J4,Bettella Francesco5,Witoelar Aree5,Lie Benedicte A6,Li Wen5,McEvoy Linda K7,Djurovic Srdjan8,Desikan Rahul S9,Dale Anders M10,Andreassen Ole A11

Affiliation:

1. NORMENT, K.G. Jebsen Psychosis Research Centre, Institute of Clinical Medicine, Oslo University Hospital and University of Oslo, Oslo, Norway/Division of Mental Health and Addiction, Oslo University Hospital, Oslo, Norway/Multimodal Imaging Laboratory, University of California, San Diego, La Jolla, CA, USA/Department of Neurosciences, University of California, San Diego, La Jolla, CA, USA

2. Department of Neurology, Oslo University Hospital, Ullevål, Oslo, Norway/Institute of Clinical Medicine, University of Oslo, Oslo, Norway

3. Department of Psychiatry, University of California, San Diego, La Jolla, CA, USA

4. Multimodal Imaging Laboratory, University of California, San Diego, La Jolla, CA, USA/Cognitive Sciences Graduate Program, University of California, San Diego, La Jolla, CA, USA/Center for Human Development, University of California, San Diego, La Jolla, CA, USA

5. NORMENT, K.G. Jebsen Psychosis Research Centre, Institute of Clinical Medicine, Oslo University Hospital and University of Oslo, Oslo, Norway/Division of Mental Health and Addiction, Oslo University Hospital, Oslo, Norway

6. Department of Medical Genetics, Oslo University Hospital and University of Oslo, Oslo, Norway

7. Multimodal Imaging Laboratory, University of California, San Diego, La Jolla, CA, USA/Department of Radiology, University of California–San Diego, La Jolla, CA, USA

8. NORMENT, K.G. Jebsen Psychosis Research Centre, Institute of Clinical Medicine, Oslo University Hospital and University of Oslo, Oslo, Norway/Division of Mental Health and Addiction, Oslo University Hospital, Oslo, Norway/Department of Medical Genetics, Oslo University Hospital and University of Oslo, Oslo, Norway

9. Department of Radiology and Biomedical Imaging, University of California – San Francisco, San Francisco, CA, USA

10. NORMENT, K.G. Jebsen Psychosis Research Centre, Institute of Clinical Medicine, Oslo University Hospital and University of Oslo, Oslo, Norway/Department of Psychiatry, University of California, San Diego, La Jolla, CA, USA/Multimodal Imaging Laboratory, University of California, San Diego, La Jolla, CA, USA/Department of Radiology, University of California, San Diego, La Jolla, CA, USA/Department of Neurosciences, University of California, San Diego, La Jolla, CA, USA

11. NORMENT, K.G. Jebsen Psychosis Research Centre, Institute of Clinical Medicine, Oslo University Hospital and University of Oslo, Oslo, Norway/Division of Mental Health and Addiction, Oslo University Hospital, Oslo, Norway/Department of Psychiatry, University of California, San Diego, La Jolla, CA, USA

Abstract

Background: Epidemiological findings suggest a relationship between multiple sclerosis (MS) and cardiovascular disease (CVD) risk factors, although the nature of this relationship is not well understood. Objective: We used genome-wide association study (GWAS) data to identify shared genetic factors (pleiotropy) between MS and CVD risk factors. Methods: Using summary statistics from a large, recent GWAS (total n > 250,000 individuals), we investigated overlap in single nucleotide polymorphisms (SNPs) associated with MS and a number of CVD risk factors including triglycerides (TG), low-density lipoprotein (LDL) cholesterol, high-density lipoprotein (HDL) cholesterol, body mass index, waist-to-hip ratio, type 2 diabetes, systolic blood pressure, and C-reactive protein level. Results and conclusion: Using conditional enrichment plots, we found 30-fold enrichment of MS SNPs for different levels of association with LDL and TG SNPs, with a corresponding reduction in conditional false discovery rate (FDR). We identified 133 pleiotropic loci outside the extended major histocompatibility complex with conditional FDR < 0.01, of which 65 are novel. These pleiotropic loci were located on 21 different chromosomes. Our findings point to overlapping pathobiology between clinically diagnosed MS and cardiovascular risk factors and identify novel common variants associated with increased MS risk.

Publisher

SAGE Publications

Subject

Neurology (clinical),Neurology

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