Figure 2. Correlations between the arterial expression of CDKN2A/p16INK4a and circulating levels of carboxylated (GLA) active osteocalcin (A) and coronary artery calcification by CT heart (B). CDKN2A = cyclin-dependent kinase 2A. RQ = relative quantity. HU = Hounsfield units. The exclusion of one patient on warfarin did not affect the correlation between CDKN2A/p16INK4a and GLA-OC (Rho=-0.51; p=0.001).