RT Book, Section A1 Hay, Jr, William W. A1 Levin, Myron J. A1 Deterding, Robin R. A1 Abzug, Mark J. SR Print(0) ID 1145457831 T1 Phenylketonuria T2 Quick Medical Diagnosis & Treatment Pediatrics YR 2017 FD 2017 PB McGraw-Hill Education PP New York, NY SN 9781264257614 LK accesspediatrics.mhmedical.com/content.aspx?aid=1145457831 RD 2024/04/19 AB Mental retardation, hyperactivity, seizures, light complexion, and eczema characterize untreated patientsNewborn screening for elevated plasma phenylalanine identifies most infantsDisorders of cofactor metabolism also produce elevated plasma phenylalanine levelEarly diagnosis and treatment with phenylalanine-restricted diet prevents mental retardationan autosomal recessive trait, with an incidence in whites of approximately 1:10,000 live births