APOB and coronary artery disorder: Third, apo A-1, apo B and lipoprotein(a) (Lp[a]) were not measured in the current study; however, Ingelsson et al. have shown that overall performance of apo B/apo A-1 for prediction of CHD is comparable with that of traditional lipid ratios and results in no incremental utility over TC/HDL-C [55].