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Mutation analysis in a population-based cohort of boys with Duchenne or Becker muscular dystrophy
Journal article   Peer reviewed

Mutation analysis in a population-based cohort of boys with Duchenne or Becker muscular dystrophy

Christopher Cunniff, Jennifer Andrews, F John Meaney, Katherine D Mathews, Dennis Matthews, Emma Ciafaloni, Timothy M Miller, John B Bodensteiner, Lisa A Miller, Katherine A James, …
Journal of child neurology, Vol.24(4), pp.425-430
04/2009
DOI: 10.1177/0883073808324770
PMCID: PMC5882193
PMID: 19074751
url
http://doi.org/10.1177/0883073808324770View
Open Access

Abstract

The type and frequency of diagnostic testing was analyzed in a population-based cohort of boys with Duchenne muscular dystrophy or Becker muscular dystrophy. Use of muscle biopsy declined from 66.0% of boys born between January 1982 and September 1987 to 32.6% born between April 1999 and September 2004. DMD mutation was documented for 345 (73.4%) boys. Deletions were more common and point mutations were less common than that has been reported in specialty clinic or laboratory-based cohorts. Deletion of one or more exons was detected in 270 individuals (57.4% of all patients and 78.3% with a DMD mutation). Duplication was identified in 39 individuals (8.3% of all patients and 11.3% with a DMD mutation). Point mutation, small insertion, or small deletion was found in 36 individuals (7.7% of all patients and 10.4% with a DMD mutation). Point mutation analysis was performed in only 37 of 130 (28.5%) individuals with negative deletion and/or duplication testing.
Gene Duplication Gene Frequency - genetics Genetic Predisposition to Disease - genetics Genetic Testing Humans Genotype Male Muscular Dystrophy, Duchenne - epidemiology Mutation - genetics Young Adult Point Mutation - genetics Dystrophin - genetics DNA Mutational Analysis Gene Deletion Genetic Markers - genetics Adolescent Biopsy - utilization Muscular Dystrophy, Duchenne - genetics Genetic Predisposition to Disease - epidemiology Child Cohort Studies Muscular Dystrophy, Duchenne - diagnosis

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