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]. This evidence concerns the gene EMP1 and hydrops fetalis.