title: Switch from Sodium Phenylbutyrate to Glycerol Phenylbutyrate Improved Metabolic Stability in an Adolescent with Ornithine Transcarbamylase Deficiency.
abstract: A male patient, born in 1999, was diagnosed with ornithine transcarbamylase deficiency as neonate and was managed with a strict low-protein diet supplemented with essential amino acids, L-citrulline, and L-arginine as well as sodium benzoate. He had an extensive history of hospitalizations for hyperammonemic crises throughout childhood and early adolescence, which continued after the addition of sodium phenylbutyrate in 2009. In December 2013 he was switched to glycerol phenylbutyrate, and his metabolic stability was greatly improved over the following 7 months prior to liver transplant.
authors.affiliation: Division of Metabolism and Children's Research Center (CRC), University Children's Hospital, Steinwiesstrasse 75, 8032, Zurich, Switzerland.
authors.forename: Alexander
authors.initials: A
authors.lastname: Laemmle
authors.affiliation: Division of Metabolism and Children's Research Center (CRC), University Children's Hospital, Steinwiesstrasse 75, 8032, Zurich, Switzerland.
authors.forename: Tamar
authors.initials: T
authors.lastname: Stricker
authors.affiliation: Division of Metabolism and Children's Research Center (CRC), University Children's Hospital, Steinwiesstrasse 75, 8032, Zurich, Switzerland. Johannes.Haeberle@kispi.uzh.ch.
authors.forename: Johannes
authors.initials: J
authors.lastname: Häberle
keywords: Glycerol phenylbutyrate; Hyperammonemia; Ornithine transcarbamylase deficiency; Sodium phenylbutyrate; Urea cycle disorder