AGPAT2 is mutated in congenital generalized lipodystrophy linked to chromosome 9q34

Anil K. Agarwal, Elif Arioglu, Salome De Almeida, Nurullah Akkoc, Simeon I. Taylor, Anne M. Bowcock, Robert I. Barnes, Abhimanyu Garg

Research output: Contribution to journalArticle

370 Scopus citations

Abstract

Congenital generalized lipodystrophy is an autosomal recessive disorder characterized by marked paucity of adipose tissue, extreme insulin resistance, hypertriglyceridemia, hepatic steatosis and early onset of diabetes. We report several different mutations of the gene (AGPAT2) encoding 1-acylglycerol-3-phosphate O-acyltransferase 2 in 20 affected individuals from 11 pedigrees of diverse ethnicities showing linkage to chromosome 9q34. The AGPAT2 enzyme catalyzes the acylation of lysophosphatidic acid to form phosphatidic acid, a key intermediate in the biosynthesis of triacylglycerol and glycerophospholipids. AGPAT2 mRNA is highly expressed in adipose tissue. We conclude that mutations in AGPAT2 may cause congenital generalized lipodystrophy by inhibiting triacylglycerol synthesis and storage in adipocytes.

Original languageEnglish (US)
Pages (from-to)21-23
Number of pages3
JournalNature genetics
Volume31
Issue number1
DOIs
StatePublished - May 2002

ASJC Scopus subject areas

  • Genetics

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    Agarwal, A. K., Arioglu, E., De Almeida, S., Akkoc, N., Taylor, S. I., Bowcock, A. M., Barnes, R. I., & Garg, A. (2002). AGPAT2 is mutated in congenital generalized lipodystrophy linked to chromosome 9q34. Nature genetics, 31(1), 21-23. https://doi.org/10.1038/ng880