Cargando…

Unrecognized High Occurrence of Genetically Confirmed Hereditary Carnitine Palmitoyltransferase II Deficiency in an Austrian Family Points to the Ongoing Underdiagnosis of the Disease

Adult muscle carnitine palmitoyltransferase (CPT) II deficiency is a rare autosomal recessive disorder of long-chain fatty acid metabolism. It is typically associated with recurrent episodes of exercise-induced rhabdomyolysis and myoglobinuria, in most cases caused by a c.338C > T mutation in the...

Descripción completa

Detalles Bibliográficos
Autores principales: Zach, Christina, Unterkofler, Karl, Fraunberger, Peter, Drexel, Heinz, Muendlein, Axel
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6540962/
https://www.ncbi.nlm.nih.gov/pubmed/31191612
http://dx.doi.org/10.3389/fgene.2019.00497
_version_ 1783422711749410816
author Zach, Christina
Unterkofler, Karl
Fraunberger, Peter
Drexel, Heinz
Muendlein, Axel
author_facet Zach, Christina
Unterkofler, Karl
Fraunberger, Peter
Drexel, Heinz
Muendlein, Axel
author_sort Zach, Christina
collection PubMed
description Adult muscle carnitine palmitoyltransferase (CPT) II deficiency is a rare autosomal recessive disorder of long-chain fatty acid metabolism. It is typically associated with recurrent episodes of exercise-induced rhabdomyolysis and myoglobinuria, in most cases caused by a c.338C > T mutation in the CPT2 gene. Here we present the pedigree of one of the largest family studies of CPT II deficiency caused by the c.338C > T mutation, documented so far. The pedigree comprises 24 blood relatives of the index patient, a 32 year old female with genetically proven CPT II deficiency. In total, the mutation was detected in 20 family members, among them five homozygotes and 15 heterozygotes. Among all homozygotes, first symptoms of CPT II deficiency occurred during childhood. Additionally, two already deceased relatives of the index patient were carriers of at least one copy of the genetic variant, revealing a remarkably high prevalence of the c.338C > T mutation within the tested family. Beside the index patient, only one individual had been diagnosed with CPT II deficiency prior to this study and three cases of CPT II deficiency were newly detected by this family study, pointing to a general underdiagnosis of the disease. Therefore, this study emphasizes the need to raise awareness of CPT II deficiency for correct diagnosis and accurate management of the disease.
format Online
Article
Text
id pubmed-6540962
institution National Center for Biotechnology Information
language English
publishDate 2019
publisher Frontiers Media S.A.
record_format MEDLINE/PubMed
spelling pubmed-65409622019-06-12 Unrecognized High Occurrence of Genetically Confirmed Hereditary Carnitine Palmitoyltransferase II Deficiency in an Austrian Family Points to the Ongoing Underdiagnosis of the Disease Zach, Christina Unterkofler, Karl Fraunberger, Peter Drexel, Heinz Muendlein, Axel Front Genet Genetics Adult muscle carnitine palmitoyltransferase (CPT) II deficiency is a rare autosomal recessive disorder of long-chain fatty acid metabolism. It is typically associated with recurrent episodes of exercise-induced rhabdomyolysis and myoglobinuria, in most cases caused by a c.338C > T mutation in the CPT2 gene. Here we present the pedigree of one of the largest family studies of CPT II deficiency caused by the c.338C > T mutation, documented so far. The pedigree comprises 24 blood relatives of the index patient, a 32 year old female with genetically proven CPT II deficiency. In total, the mutation was detected in 20 family members, among them five homozygotes and 15 heterozygotes. Among all homozygotes, first symptoms of CPT II deficiency occurred during childhood. Additionally, two already deceased relatives of the index patient were carriers of at least one copy of the genetic variant, revealing a remarkably high prevalence of the c.338C > T mutation within the tested family. Beside the index patient, only one individual had been diagnosed with CPT II deficiency prior to this study and three cases of CPT II deficiency were newly detected by this family study, pointing to a general underdiagnosis of the disease. Therefore, this study emphasizes the need to raise awareness of CPT II deficiency for correct diagnosis and accurate management of the disease. Frontiers Media S.A. 2019-05-22 /pmc/articles/PMC6540962/ /pubmed/31191612 http://dx.doi.org/10.3389/fgene.2019.00497 Text en Copyright © 2019 Zach, Unterkofler, Fraunberger, Drexel and Muendlein. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Genetics
Zach, Christina
Unterkofler, Karl
Fraunberger, Peter
Drexel, Heinz
Muendlein, Axel
Unrecognized High Occurrence of Genetically Confirmed Hereditary Carnitine Palmitoyltransferase II Deficiency in an Austrian Family Points to the Ongoing Underdiagnosis of the Disease
title Unrecognized High Occurrence of Genetically Confirmed Hereditary Carnitine Palmitoyltransferase II Deficiency in an Austrian Family Points to the Ongoing Underdiagnosis of the Disease
title_full Unrecognized High Occurrence of Genetically Confirmed Hereditary Carnitine Palmitoyltransferase II Deficiency in an Austrian Family Points to the Ongoing Underdiagnosis of the Disease
title_fullStr Unrecognized High Occurrence of Genetically Confirmed Hereditary Carnitine Palmitoyltransferase II Deficiency in an Austrian Family Points to the Ongoing Underdiagnosis of the Disease
title_full_unstemmed Unrecognized High Occurrence of Genetically Confirmed Hereditary Carnitine Palmitoyltransferase II Deficiency in an Austrian Family Points to the Ongoing Underdiagnosis of the Disease
title_short Unrecognized High Occurrence of Genetically Confirmed Hereditary Carnitine Palmitoyltransferase II Deficiency in an Austrian Family Points to the Ongoing Underdiagnosis of the Disease
title_sort unrecognized high occurrence of genetically confirmed hereditary carnitine palmitoyltransferase ii deficiency in an austrian family points to the ongoing underdiagnosis of the disease
topic Genetics
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6540962/
https://www.ncbi.nlm.nih.gov/pubmed/31191612
http://dx.doi.org/10.3389/fgene.2019.00497
work_keys_str_mv AT zachchristina unrecognizedhighoccurrenceofgeneticallyconfirmedhereditarycarnitinepalmitoyltransferaseiideficiencyinanaustrianfamilypointstotheongoingunderdiagnosisofthedisease
AT unterkoflerkarl unrecognizedhighoccurrenceofgeneticallyconfirmedhereditarycarnitinepalmitoyltransferaseiideficiencyinanaustrianfamilypointstotheongoingunderdiagnosisofthedisease
AT fraunbergerpeter unrecognizedhighoccurrenceofgeneticallyconfirmedhereditarycarnitinepalmitoyltransferaseiideficiencyinanaustrianfamilypointstotheongoingunderdiagnosisofthedisease
AT drexelheinz unrecognizedhighoccurrenceofgeneticallyconfirmedhereditarycarnitinepalmitoyltransferaseiideficiencyinanaustrianfamilypointstotheongoingunderdiagnosisofthedisease
AT muendleinaxel unrecognizedhighoccurrenceofgeneticallyconfirmedhereditarycarnitinepalmitoyltransferaseiideficiencyinanaustrianfamilypointstotheongoingunderdiagnosisofthedisease