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Will Embryonic Gene Editing Lead To Eugenics? Or A Medical Revolution?
The first technique involved editing the genes of a fertilized human egg. This resulted in an embryo that where some cells were repaired, but others still had the gene linked to heart disease. While this was somewhat effective, it did not solve the problem.
The second technique involved adding the gene editing components to the egg before fertilization. Using this approach, the majority of eggs treated in this way developed into embryos where all the cells were repaired.
This is a huge breakthrough because it means that if the embryos had been allowed to develop to full term, the baby born as a result would not only be free of the disease, he or she would not inherit it and pass on to any descendants as well.
Under United States federal law, genetic editing of any kind is prohibited on embryos that will be developed longer than 14 days. Other countries have similar restrictions in place, while some countries like China have more relaxed policies with guidelines rather than laws pertaining to gene editing in embryos. While other gene editing experiments in China have been done in the past, this experiment in Oregon is the only successful one to date.
READ ALSO: 10 Dangerous Food Procedures Illegal in Europe but Practiced in USA
Is this the first step to designer babies and eugenics?
Not so fast, claims Dr. Robin Lovell-Badge of the Francis Crick Institute in London. While scientists might be able to trace a disease like the heart condition mentioned above to single gene, traits like height, athleticism, and creativity don’t work anything like that. These complex physical and intellectual traits are not linked to one gene, but rather to combinations of many thousands of genes. For instance, how tall a person grows up to be is determine by over 90,000 genes! The truth is that genetics is extremely complicated and scientists really would not even know where to begin if someone asked them to design an embryo that would grow up to be a Nobel Prize winner or world-class athlete. It’s not a matter of just snipping and inserting genetic code here or there. The combinations of thousands of genes are what make each person unique.
In a recent report in The New York Times details how even some diseases and psychiatric disorders might be too complex in terms of their genetic causes for gene editing to fix. While the new experiment in Oregon certainly yielded some interesting and potentially beneficial findings, we’re a long way off from eliminating many inherited conditions.
The most prudent way forward is putting laws in place that allow for gene editing research for medical purposes, while strictly enforcing restrictions on any attempts at eugenic experimentation.
Keep an eye on this field, you’re probably going to be hearing more about medical gene editing in the years to come.