A quantitative polymerase chain reaction method for determining copy number within the Prader–Willi/Angelman syndrome critical region.

Focuses on a quantitative polymerase chain reaction (PWACR) method for determining copy number within the Prader-Willi/Angelman syndrome critical region. Methods that are available for the diagnosis of Prader-Willi syndrome; Ability of the method to distinguish patients with deletions, disomy and additional copies of PWACR.