Among the clinical and laboratory metrics that have been shown to predict morbidity and mortality in chronic heart failure patients (HF), two have demonstrated the most promise: previous HF hospitalizations (HFH) and natriuretic peptides (NP), particularly B‐type natriuretic peptide (BNP).1, 2, 3, 4, 5, 6, 7. This evidence concerns the gene NPPB and hydrops fetalis.