CYFIP1 and EIF4G3 were highly expressed in m7G subtype A, whereas NUDT16, NUDT4, EIF4E3, GEMIN5, and LARP1 were highly expressed in m7G subtype B. In addition, the m7G modification expression pattern in each HF subtype was also compared with that of NFDs. The gene discussed is EIF4G3; the disease is hydrops fetalis.