Microcephaly, Facial Dysmorphism, Renal Agenesis, and Ambiguous Genitalia Syndrome, is also known as mfrg. An important gene associated with Microcephaly, Facial Dysmorphism, Renal Agenesis, and Ambiguous Genitalia Syndrome is CTU2 (Cytosolic Thiouridylase Subunit 2). Affiliated tissues include brain and kidney, and related phenotypes are microcephaly and micrognathia