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[Future developments in genetic research. II. Psychological and social aspects]
1Afd. Klinische Genetica. Academisch Ziekenhuis Rotterdam-Dijkzigt.
Nederlands Tijdschrift Voor Geneeskunde
|April 29, 1998
Summary
Deciding whether to learn genetic risk factors for serious diseases involves weighing disease severity and available preventive measures. Predictive DNA testing, especially for Huntington
Area of Science:
- Medical Genetics
- Psychosocial Impact of Genetic Testing
- Bioethics
Background:
- Determining genetic risk for serious diseases presents a dilemma for relatives: 'to know or not to know'.
- Decision-making is influenced by disease severity, risk magnitude, and availability of interventions.
- Expectations of predictive DNA testing often diverge from the realities encountered.
Purpose of the Study:
- To explore the complexities surrounding presymptomatic DNA testing for genetic risk factors.
- To examine the psychosocial consequences and ethical considerations of genetic risk disclosure.
- To discuss the implications for multifactorial diseases and carrier status.
Main Methods:
- Review of experiences with presymptomatic DNA testing for Huntington's disease.
- Analysis of requests for genetic testing in familial breast and colorectal cancer.
- Discussion of psychosocial outcomes and legislative aspects of genetic testing.
Main Results:
- Presymptomatic testing for Huntington's reveals discrepancies between expectations and outcomes.
- Over half of healthy relatives of breast cancer patients seek DNA testing.
- A majority of BRCA1/BRCA2 mutation carriers opt for prophylactic surgeries.
Conclusions:
- Predictive genetic testing raises significant psychosocial questions regarding medicalization, relationships, and behavior.
- Current Dutch legislation offers protection against third-party misuse of genetic information.
- Balancing research enthusiasm with potential societal impacts is crucial for future genetic advancements.