Key result
Out-of-frame deletions with undetectable dystrophin predict severe phenotypes, while deletions involving exons 45-48 are consistently associated with the mildest Becker phenotype.
Why the study?
What are the genetic and clinical correlations in patients with Xp21 muscular dystrophy?
Observational (n=100)
What are the genetic and clinical correlations in patients with Xp21 muscular dystrophy?
Specific dystrophin gene deletions correlate with the severity of Xp21 muscular dystrophy, though additional factors influence the exact clinical course.
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Spectrum of Xp21 dystrophy severity confirmed with intermediate heterogeneity; leaves open refined genotype-phenotype correlations.
K. Bushby (1992) conducted an observational in Xp21 muscular dystrophy (n=100). Dystrophin gene mutations and dystrophin abundance was evaluated on Clinical phenotype severity. Out-of-frame deletions with undetectable dystrophin predict severe phenotypes, while deletions involving exons 45-48 are consistently associated with the mildest Becker phenotype.
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