What are you looking for in prenatal testing for huntington's disease?

Prevention. If a parent is known to carry the huntington's mutation, there is a 50% chance they will pass this to their offspring. If undergoing ivf, the embryos can be testing for the gene, so that only unaffected embryos will be implanted. If already pregnant, chorionic villus sampling or amniocentesis can test for the gene, and affected pregnancies have the option of termination.
Informed consent. With respect to risk of a fatal genetic disease with no known therapy which may be inherited from an at-risk parent, and can be diagnosed prenatally, it is essential that the risks and benefits of the testing be provided to the parent. The issues are complex, and that usually requires a consultation by a clinical geneticist or genetics counselor. See hdsa.org.

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