Abstract
To distinguish hypertrophic cardiomyopathy (HCM) from hypertensive left ventricular hypertrophy (H-LVH) based on a morphological examination is often challenging. Growth differentiation factor 15 (GDF-15) is a novel diagnostic and prognostic biomarker for several cardiovascular diseases. In patients with LVH, GDF-15 promises to be a useful biomarker to distinguish between HCM and H-LVH. We evaluated 93 patients with H-LVH, 28 with HCM, and 28 disease control individuals. Serum GDF-15 concentrations were measured with an enzyme-linked immunosorbent assay. Circulating GDF-15 levels were significantly higher in patients with H-LVH than with HCM (P=0.003). On the other hand, values for plasma B-type natriuretic peptide (BNP) levels were significantly lower in patients with H-LVH than with HCM (P = 0.004). Serum GDF-15 and plasma BNP levels positively correlated in patients with H-LVH but not with HCM. Multivariate logistic regression analysis revealed GDF-15 (odds ratio 12.06, confidence interval 1.85-78.77, P < 0.01) as an independent predictor of H-LVH among patients with LVH. In receiver-operating characteristic analysis, GDF-15 achieved an area under the curve of 0.70 for the identification of H-LVH. We found that GDF-15 might be a useful biomarker for discriminating HCM from H-LVH. Understanding serum GDF-15 values may have clinical utility for patients with LVH because the therapeutic strategies for treating HCM and H-LVH differ.
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