PMID- 21962599 OWN - NLM STAT- MEDLINE DCOM- 20120327 LR - 20120214 IS - 1097-6833 (Electronic) IS - 0022-3476 (Linking) VI - 160 IP - 3 DP - 2012 Mar TI - Carrier frequency of a common mutation of carnitine palmitoyltransferase 1A deficiency and long-term follow-up in Finland. PG - 473-479.e1 LID - 10.1016/j.jpeds.2011.08.032 [doi] AB - OBJECTIVE: To assess the long-term clinical course of carnitine palmitoyltransferase 1A (CPT1A) deficiency, caused by the c.1364A>C (p.K455T) mutation, and the carrier frequency of this mutation in Finland. STUDY DESIGN: This was a long-term follow-up of patients in whom the common mutation was detected. RESULTS: Between 1999 and 2010, 6 cases of CPT1A deficiency were diagnosed and treated with a high-carbohydrate, low-fat diet. The patients experienced their first symptoms during the first years of life, provoked by viral illness and/or fasting. The clinical features included hypoketotic hypoglycemia, hepatopathy, and loss of consciousness, ranging from transient unconsciousness to prolonged hyperlipidemic coma. Five cases carried a homozygous c.1364A>C (p.K455T) mutation, whereas 1 case had a compound c.1364A>C/c.1493A>C (p.Y498S) mutation. During dietary therapy, the patients had few transient decompensations. No carriers of mutation c.1364A>C were detected by minisequencing of 150 control samples. CONCLUSION: Even though CPT1A deficiency may be life-threatening and lead to prolonged coma, the long-term prognosis is good. A genotype-phenotype correlation implies that the mutations detected are disease-causing. Despite Finland's location close to the Arctic polar region, the carrier frequency of the c.1364A>C mutation in Finland is far lower than that of the variants found in Alaskan, Canadian, and Greenland native populations. CI - Copyright A(c) 2012 Mosby, Inc. All rights reserved. FAU - Roomets, Eva AU - Roomets E AD - Molecular Neurology Research Programs Unit, Department of Pediatric Neurology, Biomedicum Helsinki, University of Helsinki, Helsinki, Finland. FAU - Polinati, Padmini P AU - Polinati PP FAU - Euro, Liliya AU - Euro L FAU - Eskelin, Petra M AU - Eskelin PM FAU - Paganus, Aila AU - Paganus A FAU - Tyni, Tiina AU - Tyni T LA - eng PT - Case Reports PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20110929 PL - United States TA - J Pediatr JT - The Journal of pediatrics JID - 0375410 RN - EC 2.3.1.21 (Carnitine O-Palmitoyltransferase) SB - IM MH - Adolescent MH - Adult MH - Blotting, Western MH - Carnitine O-Palmitoyltransferase/deficiency/*genetics/metabolism MH - Child MH - Child Development MH - Child, Preschool MH - Diet Therapy MH - Female MH - Finland/epidemiology MH - Follow-Up Studies MH - Genetic Association Studies MH - *Heterozygote MH - Humans MH - Male MH - *Mutation, Missense MH - Young Adult EDAT- 2011/10/04 06:00 MHDA- 2012/03/28 06:00 CRDT- 2011/10/04 06:00 PHST- 2011/02/18 00:00 [received] PHST- 2011/06/29 00:00 [revised] PHST- 2011/08/10 00:00 [accepted] PHST- 2011/10/04 06:00 [entrez] PHST- 2011/10/04 06:00 [pubmed] PHST- 2012/03/28 06:00 [medline] AID - S0022-3476(11)00827-4 [pii] AID - 10.1016/j.jpeds.2011.08.032 [doi] PST - ppublish SO - J Pediatr. 2012 Mar;160(3):473-479.e1. doi: 10.1016/j.jpeds.2011.08.032. Epub 2011 Sep 29.