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Becker Muscular Dystrophy
Inheritance patterns and prenatal diagnosis
Inheritance patterns
BMD is an X-linked condition.
Prenatal diagnosis
This is usually possible where it is known that BMD affects the family and where the particular mutation in the dystrophin gene is known. While most families have deletions or duplications of whole exons (sequence of a gene's DNA that transcribes into the structures of protein) that are relatively simple to detect, some families have point mutations (replacement of one of the basic units of DNA with another leading to a change in proteins) for which it is not so easy to offer testing. In some of these families, prenatal testing may need to rely upon linkage analysis (gene tracking) instead of mutation-detecting tests.
How is it treated?
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