Case Reports in Genetics (Jan 2014)

Concomitant Alpha- and Gamma-Sarcoglycan Deficiencies in a Turkish Boy with a Novel Deletion in the Alpha-Sarcoglycan Gene

  • Gulden Diniz,
  • Hulya Tosun Yildirim,
  • Sarenur Gokben,
  • Gul Serdaroglu,
  • Filiz Hazan,
  • Kanay Yararbas,
  • Ajlan Tukun

DOI
https://doi.org/10.1155/2014/248561
Journal volume & issue
Vol. 2014

Abstract

Read online

Limb-girdle muscular dystrophy type 2D (LGMD-2D) is caused by autosomal recessive defects in the alpha-sarcoglycan gene located on chromosome 17q21. In this study, we present a child with alpha-sarcoglycanopathy and describe a novel deletion in the alpha-sarcoglycan gene. A 5-year-old boy had a very high serum creatinine phosphokinase level, which was determined incidentally, and a negative molecular test for the dystrophin gene. Muscle biopsy showed dystrophic features. Immunohistochemistry showed that there was diminished expression of alpha- and gamma-sarcoglycans. DNA analysis revealed a novel 7 bp homozygous deletion in exon 3 of the alpha-sarcoglycan gene. His parents were consanguineous heterozygous carriers of the same deletion. We believe this is the first confirmed case of primary alpha-sarcoglycanopathy with a novel deletion in Turkey. In addition, this study demonstrated that both muscle biopsy and DNA analysis remain important methods for the differential diagnosis of muscular dystrophies because dystrophinopathies and sarcoglycanopathies are so similar.