APOB and diabetes mellitus: Similarly, small proportions of GRS50 were mediated: 8.1% (95% CI: 5.5–11.8%) by apoB, 1.2% (95% CI: 0.5–3.0%) by apoA‐I, 4.2% (95% CI: 1.3–7.5%) by blood pressure, and −0.9% (95% CI: −3.7% to 1.6%) by diabetes mellitus.