To further investigate the effect of circulating levels of the liver enzymes on the risk of cardiovascular outcomes, a two-sample MR approach was employed54. We considered the outcomes of CHD, ischemic stroke, and intracerebral hemorrhage (ICH). Genetic association estimates on outcomes were obtained from the CARDIoGRAMplusC4D Consortium for CHD (60,801 cases and 123,504 controls, multiethnic)55, the MEGASTROKE Consortium for ischemic stroke (60,341 cases and 454,450 controls, multiethnic)56, and the International Stroke Genetic Consortium for ICH (1545 cases and 1481 controls, European ancestry)57. For the main analysis, the random-effects IVW meta-analysis MR approach was used, with the simple and weighted median, and MR-Egger approaches also employed as sensitivity analyses as these are more robust to the inclusion of potentially pleiotropic variants58.
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