Sunday, November 13, 2011
How does a person inherit Huntington's?
Huntington's disease is an autosomal dominant disorder. It is caused by a mutation of the Huntington's disease gene located on chromosome number 4. If one parent has the disease, there is a 50% chance that the child will have the disease. A small percentage of Huntington's cases are sporadic. This means that even without any family cases, a person can get the HD defect gene. This is believed to be cause by an mutation that occurs during sperm development.
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