We assessed the relationship between NT-proBNP levels and all-cause mortality in patients with stable coronary heart disease. NT-proBNP was measured in 1,034 patients referred for elective coronary angiography. In a multivariable Cox regression analysis, the hazard ratio for death from any cause for patients with NT-proBNP levels in the fourth quartile as compared with those in the first quartile was 2.4 (95% CI 1.5-4.0). NT-proBNP provides prognostic information on all-cause mortality independent of conventional cardiovascular risk factors and left ventricular dysfunction.