However, recent research has underscored the importance of biomarkers such as N-terminal pro b-type Natriuretic Peptide (NT-proBNP), as well as measures of arterial stiffness, including pulse wave velocity (PWV) and augmentation index (AIx), in predicting hospitalizations and mortality risk among HF patients [17,18]. The gene discussed is NPPB; the disease is hydrops fetalis.