Medians and interquartile ranges of NT-proBNP (in pg/ml) were 35.4 [11–67.2] in men and 60.1 [39.2–97.0] in women of the sub-cohort and 84.8 [41.6–206.3] in male and 104.2 [54.7–203.5] in female HF cases. This evidence concerns the gene NPPB and hydrops fetalis.