CHD4 and hydrops fetalis: The expression levels of Chd4 and Smarcc1 were significantly increased in LP-HF, and the expression levels of Abca1, Hdlbp, Osbol9, Pitpnc1, Kat2b, and Smarca2 in LP-HF tended to be higher than those in CN-HF (Figure 3a,b).