APOB and coronary artery disorder: Arnold et al. reported that in subjects with Lp(a) above the 90th percentile of their cohort (44 mg/dL; 110 nmol/L), compared with the total population, the association of apoB with incident CHD was diminished when apoB was above 109 mg/dL (60th percentile) and was lost completely when apoB levels were below 109 mg/dL [5].