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Duchenne muscular dystrophy diagnosed by dystrophin gene deletion test: A case report

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Int J Med Res Health Sci. |

Author: Rathod Kishor G, Dawre Rahul M, Kamble Milind B,Tambe Saleem H
Int J Med Res Health Sci.2014;3(2):506-508  DOI:10.5958/j.2319-5886.3.2.109

ABSTRACT

Duchenne muscular dystrophy (DMD) is an X-linked recessive disease affecting 1 in 3600—6000 live male births. A muscle biopsy is not necessary if a genetic diagnosis is secured first, particularly as some families might view the procedure as traumatic. DMD occurs as a result of mutations (mainly deletions) in the dystrophin gene (DMD; locus Xp21.2). Mutations lead to an absence of or defect in the protein dystrophin, which results in progressive muscle degeneration leading to loss of independent ambulation. Ninety percent of out frame mutations result in DMD, while 90% of in-frame mutations result in BMD. Electron microscopy is not required to confirm DMD. Genetic testing is mandatory irrespective of biopsy results. But the muscle biopsy is not required if the diagnosis is secured first by genetic testing.

Keywords:  Duchenne Muscular Dystrophy, dystrophin gene deletion test.

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