FKBP5 and hydrops fetalis: The HF-hypoplastic left heart syndrome can be easily identified using FKBP5 (FKBP prolyl isomerase 5, 602623), a gene that we have discussed above to be associated with such CHD subtype, while, at the same time, the neo-hypoplastic left heart syndrome can be predicted by EMP1, for which the associations between which two were further supported by a recent publication [89].