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Am J Hum Genet. 2008 Oct;83(4):489-94. doi: 10.1016/j.ajhg.2008.09.002. Epub 2008 Sep 25.

Mutations in LPIN1 cause recurrent acute myoglobinuria in childhood.

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1
The Metabolic Disease Unit, Hadassah, Hebrew University Medical Center, Jerusalem 91120, Israel.

Erratum in

  • Am J Hum Genet. 2009 Jan;84(1):95.

Abstract

Recurrent episodes of life-threatening myoglobinuria in childhood are caused by inborn errors of glycogenolysis, mitochondrial fatty acid beta-oxidation, and oxidative phosphorylation. Nonetheless, approximately half of the patients do not suffer from a defect in any of these pathways. Using homozygosity mapping, we identified six deleterious mutations in the LPIN1 gene in patients who presented at 2-7 years of age with recurrent, massive rhabdomyolysis. The LPIN1 gene encodes the muscle-specific phosphatidic acid phosphatase, a key enzyme in triglyceride and membrane phospholipid biosynthesis. Of six individuals who developed statin-induced myopathy, one was a carrier for Glu769Gly, a pathogenic mutation in the LPIN1 gene. Analysis of phospholipid content disclosed accumulation of phosphatidic acid and lysophospholipids in muscle tissue of the more severe genotype. Mutations in the LPIN1 gene cause recurrent rhabdomyolysis in childhood, and a carrier state may predispose for statin-induced myopathy.

PMID:
18817903
PMCID:
PMC2561931
DOI:
10.1016/j.ajhg.2008.09.002
[Indexed for MEDLINE]
Free PMC Article
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