The inheritance of the exstrophy-epispadias complex.

The inheritance pattern of the exstrophy-epispadias complex was investigated by a combined literature review and a survey of the personal experience of pediatric urologists in North and South America, and Europe. Bladder exstrophy recurred in only 9 of approximately 2,500 families (1 in 275) with bladder exstrophy or complete epispadias. The recurrence of the exstrophy-epispadias complex in offspring of parents with bladder exstrophy or complete epispadias has never been described previously. We identified 215 offspring produced by parents with bladder exstrophy or epispadias, and bladder exstrophy was inherited in 3 of the offspring (1 in 70 live births). The recurrence of bladder exstrophy in offspring of parents with the exstrophy-epispadias complex is greater than previously assumed.