The analysis revealed that in the diagnosis of CHF, the area under the curve (AUC) of miR-182-5p was 0.780 and the cutoff value was 1.125, with 60.89% sensitivity and 84.62% specificity (Fig. 4A), and the AUC of BDNF was 0.829 and the cutoff value was 23.70, with 93.90% sensitivity and 64.10% specificity (Fig. 4B). The gene discussed is BDNF; the disease is congestive heart failure.