Nuchal Bleb, Familial, also known as fetal cystic hygroma, is related to cystic lymphangioma and ventricular septal defect. An important gene associated with Nuchal Bleb, Familial is CFTR (CF Transmembrane Conductance Regulator), and among its related pathways/superpathways are Neuropathic Pain-Signaling in Dorsal Horn Neurons and IL-1 Family Signaling Pathways. Affiliated tissues include uterus, and related phenotypes are hydrops fetalis and cystic hygroma