PCSK9 and coronary artery disorder: Interestingly, in a single-center study of stable CAD patients naïve to lipid-lowering therapy (6), both univariate and multivariate regression analyses showed that plasma PCSK9 levels were positively associated with WBCC subgroup, lymphocyte count and neutrophils count, while the molecular mechanism by which WBCC was associated with plasma PCSK9 levels was still unclear.