In a recent Mendelian randomization study, Björnson et al. reported that the odds ratio of coronary heart disease (OR CHD) is 1.28 (95% confidence interval (CI): 1.24–1.33) per 50 nmol/L Lp(a)apoB and 1.04 (95% CI: 1.03–1.05) per 50 nmol/L LDLapoB. Here, APOB is linked to coronary artery disorder.