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Researchers and bioethicists worry about the possibility of obtaining truly informed consent from prospective parents as long as the risks of germline therapy are unknown.
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There is concern that genome editing will only be accessible to the wealthy and will increase existing disparities in access to health care and other interventions.
Some worry that taken to its extreme, germline editing could create classes of individuals defined by the quality of their engineered genome.
Many bioethical and research groups believe that research using gene editing in embryos is important for myriad reasons, including to address scientific questions about human biology, as long as it is not used for reproductive purposes at this time.
Some countries have already allowed genome-editing research on nonviable embryos (those that could not result in a live birth), and others have approved genome-editing research studies with viable embryos.
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