Vacterl Association, X-Linked, with or Without Hydrocephalus, also known as vacterlx, is related to vacterl association with hydrocephaly, x-linked and fanconi anemia, complementation group b. An important gene associated with Vacterl Association, X-Linked, with or Without Hydrocephalus is ZIC3 (Zic Family Member 3). The drugs Niacin and Nicotinamide have been mentioned in the context of this disorder. Affiliated tissues include kidney and spinal cord, and related phenotypes are anal atresia and polyhydramnios