Moreover, several mRNAs, such as VCAN, KRT, HOXC13, and PRR9 as well as miRNAs such as the miR-200 family, let-7 family, miR-148a, and miR-143, detected in this study, which may have important roles in HF growth and development and were therefore implicated in these processes in AFWS. This evidence concerns the gene PRR9 and hydrops fetalis.