[Thebroser]

The thing about these developmental conditions is that in theory there a lot of different treatment modalities that can be pursued at the embryonic level that could address these conditions (viral or non viral gene therapy, CRISPR based base deletions/insertions of the correct allele, etc.). However, once embryonic development has occurred and these conditions have manifested, it would be very difficult to alleviate them. Note that this is very different from something like sickle cell anemia. As a metaphor, think of the human body as a brick house. Using state of the art biotech to treat sickle cell anemia would be like trying to replace a leaky pipe hidden under concrete in the house. Yes it may be difficult but it is doable as it’s a fairy isolated issue. Trying to fix developmental diseases like KS would be like trying to replace every inch of the mortar in the brick house. It would be painstakingly difficult to do it right without the whole house collapsing. In summary, the tech you are referencing is basically limited to pre-developmental organisms, it needs decades or centuries to go before we may feasibly perform large scale genetic engineering that can undo post-developmental physiology.

Next, we have to understand that there are serious ethical considerations on treatments that target embryos. Biology is still very much a black box field. It is near impossible trying to factor in all the parameters in this problem space, especially when you are altering genes at a highly regulated stage of human development. Millions of model organisms like mice and non human primates are used to test therapies, but would we be willing to do the same to human embryos at such a large scale? I would hardly imagine an IRB approving research like this in my lifetime in the U.S.