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Mendelian randomisation analyses find pulmonary factors mediate the effect of height on coronary artery disease.

Communications biology | 2019

There is evidence that lower height is associated with a higher risk of coronary artery disease (CAD) and increased risk of type 2 diabetes (T2D). It is not clear though whether these associations are causal, direct or mediated by other factors. Here we show that one standard deviation higher genetically determined height (~6.5 cm) is causally associated with a 16% decrease in CAD risk (OR = 0.84, 95% CI 0.80-0.87). This causal association remains after performing sensitivity analyses relaxing pleiotropy assumptions. The causal effect of height on CAD risk is reduced by 1-3% after adjustment for potential mediators (lipids, blood pressure, glycaemic traits, body mass index, socio-economic status). In contrast, our data suggest that lung function (measured by forced expiratory volume [FEV1] and forced vital capacity [FVC]) is a mediator of the effect of height on CAD. We observe no direct causal effect of height on the risk of T2D.

Pubmed ID: 30937401 RIS Download

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Associated grants

  • Agency: Medical Research Council, United Kingdom
    Id: G9521010
  • Agency: Medical Research Council, United Kingdom
    Id: MC_QA137853
  • Agency: Department of Health, United Kingdom
  • Agency: British Heart Foundation, United Kingdom
    Id: RG/14/5/30893
  • Agency: Medical Research Council, United Kingdom
    Id: MC_EX_MR/M009203/1
  • Agency: Medical Research Council, United Kingdom
    Id: MC_PC_17228
  • Agency: British Heart Foundation, United Kingdom
    Id: FS/12/82/29736
  • Agency: NIDDK NIH HHS, United States
    Id: R01 DK107786
  • Agency: Medical Research Council, United Kingdom
    Id: MC_PC_14089
  • Agency: Medical Research Council, United Kingdom
    Id: MR/M009203/1
  • Agency: NIDDK NIH HHS, United States
    Id: R01 DK075787
  • Agency: NIDDK NIH HHS, United States
    Id: K12 DK094721

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