Gene editing technology, which already is used to develop genetically modified organisms (GMOs), could in the future also be used clinically in humans. One such application could be genetic modification of human embryos, editing genes that would otherwise cause disease.
Of course, the scenario of clinical uses of genetic modification in humans arouses deep concern and heated debate. In addition to questions about efficacy and safety for the people who would be directly affected by the treatments, huge issues are raised about the fate of humanity. When gene editing is performed on germ cells, the changes are passed on to future generations.
What is often overlooked in the debate are ethical questions about the research that would have to precede such clinical applications. In order to develop genetic techniques that are effective and safe for humans, much research is required. One must, for example, test the techniques on human embryos. However, since genetic editing is best done at the time of fertilization (if done on the embryo, not all cells are always modified), a large number of donated gametes are probably required, where the eggs are fertilized in the laboratory to create genetically modified embryos.
Emilia Niemiec and Heidi Carmen Howard, both at CRB, draw attention to these more immediate ethical concerns. They point out that already the research, which precedes clinical applications, must be carefully considered and debated. It raises its own ethical issues.
In a letter to Nature, they highlight the large number of donated eggs that such research is likely to need. Egg donation involves stress and risks for women. Furthermore, the financial compensation they are offered can function as undue incentive for economically disadvantaged women.
Emilia Niemiec and Heidi Carmen Howard write that women who decide on egg donation should be given the opportunity to understand the ethical issues, so that they can make an informed decision and participate in the debate about gene editing. I think they have a good point when they emphasize that many ethical issues are raised already by the research work that would precede clinical applications.
A question I ask myself is how we can communicate with each other about deeply worrying future scenarios. How do we distinguish between image and reality when the anxiety starts a whole chain reaction of frightening images, which seem verified by the anxiety they trigger? How do we cool down this psychological reactivity without quenching the critical mind?
In short, how do we think and talk wisely about urgent future issues?
Niemiec, E. and Carmen Howard, H. 2019. Include egg donors in CRISPR gene-editing debate. Nature 575: 51