Marginally better humans. And IVF paired with embryo selection is very competitive in that niche.
replyNow, we're getting better at predicting polygenic traits, and we're getting beefy multi-edit pipelines that might provide a meaningful advantage over embryo selection working in multiple animals. But as of yet, the advantage of genetic editing in humans over just doing aggressive IVF and dredging the embryos for desirable traits is minor.
Bit of a chicken and egg problem there. Can't advance the tech fast without actively using it, can't actively use the tech until it's advanced enough for the benefits to override ethical concerns. So it's getting there, but at a glacial pace.
> If we go in and just check the DNA for Downs or Parkinson's
replyYou should consider reading the wikipedia page about Parkinson’s disease.
You should consider reading more deeply than Wikipedia to be properly informed on a subject. There are a handful of very rare mutations that confer a high risk of getting it that we can detect. They are very rare. This isn't the same thing as being able to give a risk score if the DNA doesn't have all the rare mutations. But the science is there for those unlucky rare cases to say there is a high chance that a specific coding of DNA will result in Parkinson's.
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