MYBPC3 and atrial fibrillation: Among the comorbidities present in patients with AHF, we note than only AMI (r = 0.535, p <0.001) and atrial fibrillation (r = 0.456; p = 0.001) influenced MyBP-C values, while diseases like pulmonary embolism (PE), CKD, COPD, anemia, sepsis and infection were not associated with MyBP-C levels (p > 0.05) (Table 10).