Literally right now, but it only works for future generations and you have to do IVF to get the benefits.

The basic gist is this: maybe you or your spouse has Schizophrenia, or you have a family member that does (so your child probably has a higher-than-average risk). You can go through IVF and lower your child's risk of getting the disease by selecting an embryo that has a lower polygenic risk score for the disease.

If you and your spouse have 5 embryos to pick from, you can probably lower your child's risk of Schizophrenia by about 30%. If you have more embryos, the reduction will be greater. Perhaps up to 50%.

I only know of one company currently offering this service commercially: Genomic Prediction. Their website is pretty sparse, but I know from prior research that Schizophrenia is one of the conditions they test for.