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Different options for prenatal testing for Huntington's disease using DNA probes.
1Department of Medical Genetics, University of British Columbia, Vancouver, Canada.
Journal of Medical Genetics
|June 1, 1989
Summary
Predictive and prenatal testing for Huntington's disease (HD) is now possible. This study outlines four distinct prenatal testing approaches for HD, addressing complex counseling and ethical considerations.
Area of Science:
- Genetics
- Neurology
- Medical Ethics
Background:
- Advances in DNA marker identification for Huntington's disease (HD) have enabled predictive and prenatal testing.
- A pilot program in British Columbia, Canada, has facilitated the development of various prenatal testing strategies for HD.
Observation:
- Four distinct prenatal testing approaches for HD were identified within the pilot program.
- These approaches include exclusion testing (where at-risk parents remain unaware of their HD status), definitive testing for fetuses of at-risk or affected parents, and a combined 'exclusion-definitive' testing method.
Findings:
- The development of DNA markers has led to the creation of predictive and prenatal testing programs for Huntington's disease.
- Four distinct prenatal testing strategies have emerged, including exclusion testing, definitive testing, and a combined approach.
Implications:
- The diverse prenatal testing methods for HD introduce significant counseling and ethical challenges.
- Further research and program outcomes are crucial to determine the optimal role of each prenatal testing approach in managing Huntington's disease.