There were no significant differences in distribution of sex, body mass index, hypertension, dyslipidemia, family history of CAD, unstable angina, prior MI, prior PCI, prior coronary artery bypass graft, high-density lipoprotein cholesterol, NT-proBNP, hemoglobin, preprocedural cTnI and medications at study entry among quartiles of HbA1c. Here, NPPB is linked to metabolic syndrome.