NPPB and amyloidosis: Levels of BNP were significantly higher in AS-ATTR patients (251.6 pg/mL (IQR: 153–386) vs. 589.9 pg/mL (IQR: 294–1007), p = 0.035) and a trend toward higher levels of NT-proBNP (2449 pg/mL (IQR: 1256–5274) vs. 4081.5 pg/mL (IQR: 1868.8–18771.5), p = 0.181) and troponin I (18 pg/mL (IQR: 10.8–41.3) vs. 47 pg/mL (IQR: 10.8–62.5)) was shown in patients with ATTR-CA compared to those without amyloidosis (Table 3).