“Mowat-Wilson” syndrome with and without Hirschsprung disease is a distinct, recognizable multiple congenital anomalies mental retardation syndrome caused by mutations in the zinc finger homeo box 1 B gene. - Zweier,C.; Albrecht,B.; Mitulla,B.; Behrens,R.; Beese,M.; Gillessen-Kaesbach,G. (Am J Med Genet, 2002)