RT Journal Article SR Electronic T1 Executive Functioning of 4 Children With Hyperphenylalaninemia From Childhood to Adolescence JF Pediatrics JO Pediatrics FD American Academy of Pediatrics SP e1072 OP e1074 DO 10.1542/peds.2013-4200 VO 135 IS 4 A1 Sharman, Rachael A1 Sullivan, Karen A. A1 Jones, Toni A1 Young, Ross McD. A1 McGill, Jim YR 2015 UL http://pediatrics.aappublications.org/content/135/4/e1072.abstract AB Hyperphenylalaninemia is a variant of phenylketonuria, and debate remains as to what, if any, active management of this condition is required to preserve cognitive function and psychological well-being. This study is the first to examine longitudinally the executive function (EF) in adolescents with hyperphenylalaninemia. Two sibling pairs with mild hyperphenylalaninemia underwent neuropsychological examination in early childhood and again in adolescence using EF tests that were highly sensitive to phenylalanine exposure. By early adolescence, none of the 4 children demonstrated EF impairment. The children demonstrated a typical developmental trajectory of EF from childhood to adolescence, given phenylalanine exposure consistent with their condition.