Prevalence and Clinical Spectrum of the 22q11 Deletion

The purpose of this project is to conduct population based surveillance for prenatally diagnosed congenital defects amount residents of the five counties to: improve the comprehensiveness of the Metropolitan Atlanta Congenital Defects Program (MACDP) to (1) better fulfill its objectives (2) allow assessment of the impact of prenatal diagnosis and elective termination on the birth prevalence of congenital defects in Atlanta (3) develop a registry of prenatally diagnosed defects to be used in epidemiologic and genetic studies, in evaluation prevention programs and in monitoring prenatal diagnostic technology.