For example, the couple can not have «reasonable alternatives,» such as the option of selecting healthy embryos for in vitro fertilization (IVF) or using prenatal testing and aborting a fetus with the disease. (sciencemag.org)
For other couples, gene editing could increase the number of healthy embryos available by fixing some that would otherwise be thrown away, Amato says. (sciencenews.org)
«That gives us hope they can be used as vehicles for improving fertility and the chances of producing healthy embryos and offspring.» (sciencedaily.com)