SSMEM1 and hydrops fetalis: In the HF group, we found an over-representation of theproteins equatorin (EQTN), tubulin polymerization-promoting proteinfamily member 2 (TPPP2), sperm-associated antigen 16 (SPAG16), cytochromec oxidase subunit 7C, mitochondrial (COX7C), chromosome 3 C1orf185homologue (C3H1orf185), serine-rich single-pass membrane protein 1(SSMEM1), late-cornified envelopelike proline-rich protein 1 (LELP1),beta defensin (DEFB), and histone H2A (H2AL1Q).