RT Book, Section A1 Thomas, Janet A. A1 Van Hove, Johan L. K. A1 Larson, Austin A. A1 Baker II, Peter R. A2 Bunik, Maya A2 Levin, Myron J. A2 Abzug, Mark J. A2 Schreiner, Teri L. SR Print(0) ID 1211985824 T1 Inborn Errors of Metabolism T2 Current Diagnosis & Treatment: Pediatrics, 27th Edition YR 2025 FD 2025 PB McGraw Hill PP New York, NY SN 9781265739898 LK accessmedicine.mhmedical.com/content.aspx?aid=1211985824 RD 2025/04/27 AB Disorders in which single-gene defects cause clinically significant blocks in metabolic pathways are called inborn errors of metabolism (IEM). Once considered rare, the number of recognized IEM has increased dramatically, now recognized to affect 1:1500 children. Many of these disorders can be treated effectively. Even when treatment is not available, correct diagnosis permits parents to make informed decisions about future offspring.