Familial distal myopathy due to PNPLA2 mutation

Daniela Tavian, Sara Missaglia, Corrado Angelini, Elisabetta Tasca

Risultato della ricerca: Contributo in libroContributo a convegno

Abstract

Mutations in the PNPLA2 gene cause the onset of Neutral Lipid Storage Disease with Myopathy (NLSD-M), a rare autosomal recessive disorder characterized by an abnormal accumulation of triacylglycerol into cytoplasmic lipid droplets (LDs). PNPLA2 codes for adipose triglyceride lipase (ATGL), an enzyme that hydrolyses fatty acids from triacylglycerol. NLSD-M patients are mainly affected by progressive myopathy, cardiomyopathy and hepatomegaly. However, their clinical severity appears to be highly variable. Here we report the clinical and genetic findings of a NLSD-M Italian family with different affected members. In our patients we identified two novel PNPLA2 missense mutations (pL56R and pI193F). All three patients had Jordan's anomaly and lipid storage in cultured fibroblasts and in muscle biopsy. Molecular and functional analysis of PNPLA2 mutations is useful to explain the variation of clinical expression of this syndrome and it might improve prognosis. This is a very interesting family since it shows heterogeneity of clinical presentation from relatively asymptomatic phenotype to full expression of a severe myopathy.
Lingua originaleEnglish
Titolo della pubblicazione ospiteScientific Abstract Listing and Annual Meeting Information AAN 2014
Pagine1-162
Numero di pagine162
Stato di pubblicazionePubblicato - 2014
EventoAmerican Academic of Neurology annual meeting 2014 - Philadelphia
Durata: 26 apr 20143 mag 2014

Convegno

ConvegnoAmerican Academic of Neurology annual meeting 2014
CittàPhiladelphia
Periodo26/4/143/5/14

Keywords

  • NLSD-M
  • PNPLA2 mutations
  • functional study
  • lipid metabolism

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