Future Generations and the Justifiability of Germline Engineering

Area of Science:

• Human genetics
• Bioethics
• Reproductive medicine

Background:

• Germline modifications in living individuals raise concerns about long-term impacts on human gene pool diversity.
• Potential negative repercussions include reduced heterozygosity and uniformization of genes involved in reproductive recombination.

Purpose of the Study:

• To evaluate the ethical justification of germline interventions targeting future generations.
• To argue that such interventions are ethically unjustifiable without mechanisms for control or reversal.

Main Methods:

• Ethical argumentation and philosophical analysis.
• Examination of potential negative consequences of reduced genetic diversity.
• Consideration of counterarguments related to safety, population focus, and harm reduction.

Main Results:

• Germline modifications can reduce heterozygosity and alter reproductive recombination, potentially leading to health risks.
• The lack of control or reversibility in germline interventions poses significant ethical challenges.

Conclusions:

• Germline interventions on living individuals are ethically problematic due to irreversible impacts on future generations' genetic diversity.
• Ethical permissibility hinges on the possibility of controlling or reversing interventions when necessary.