Lay representations of genetic disease, and predictive testing

Area of Science:

• Human Genetics
• Medical Sociology
• Bioethics

Background:

• Advances in human genetics identify genes for familial cancer and heart disease, leading to predictive genetic testing offers for at-risk individuals.
• Understanding lay beliefs about genetics is crucial for supporting informed decision-making regarding predictive genetic testing.

Purpose of the Study:

• To examine lay people's illness representations of genetic disease and their understanding of predictive genetic testing.
• To identify information needs for individuals facing genetic testing decisions.

Main Methods:

• Content analysis of open-ended interviews with 20 educated lay people.
• Exploration of illness representations and knowledge of genetic disorders and predictive testing.

Main Results:

• Participants demonstrated limited knowledge of late-onset genetic disorders and predictive testing, with greater familiarity with childhood genetic diseases and prenatal testing.
• Lack of mention of treatment options suggests a deterministic view of genetic diseases.
• Consistent concerns were raised regarding the ethics of genetic testing and research.

Conclusions:

• Educated lay people possess incomplete understanding of predictive genetic testing and its implications.
• Findings highlight the need for improved provision of information to facilitate informed choices about genetic testing.
• Addressing ethical concerns is paramount in genetic testing communication.