Abstract
To assess the association between circulating levels of chromogranin A (CgA) and outcome in a large population of patients with chronic heart failure (HF). Plasma CgA levels were measured at randomization and after 3 months in 1233 patients (median age 68 years, 80% male) with chronic, stable HF from the GISSI-HF trial. Circulating CgA levels were associated with several established risk markers in HF, including increased age, diabetes, reduced renal function, and heart rate variability. During a median follow-up of 3.9 years, 333 patients (27%) died. By univariable analysis, plasma CgA levels at baseline were strongly associated with all-cause mortality during follow-up; 2nd vs. 1st tertile: HR 1.58 (1.17-2.11), P = 0.002; and 3rd vs. 1st tertile: HR 2.35 (1.78-3.10), P < 0.0001. After adjustment for established risk factors of mortality, this association was attenuated and no longer significant. Randomized treatments with n-3 polyunsaturated fatty acid or rosuvastatin did not significantly change plasma CgA concentration over 3 months. Measurement of circulating CgA levels in patients with chronic, stable HF does not provide incremental prognostic information to that obtained from physical examination, routine biochemical analysis, and contemporary HF biomarkers.
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