Independent diagnostic indicators of HF in patients with HCM included B-type natriuretic peptide (BNP) (OR = 1.003, P < 0.001), diuretics (OR = 3.69, P = 0.014), and myocardial ischemia (OR = 4.99, P = 0.002). This evidence concerns the gene NPPB and myocardial ischemia.