There is an ethical component here. The process you describe involves bringing new human lives into existence, then culling the embryos that carry the gene. F

There is an ethical component here. The process you describe involves bringing new human lives into existence, then culling the embryos that carry the gene. For those of us who believe that directly ending human lives at any stage is wrong, this is problematic. Keep in mind that this isn't a so-called "incompatible with life" genetic issue. People with the defective gene can live asymptomatically into middle age. I've lost multiple family members to HD, and have multiple living with HD today. I would give just about anything to spare them from the effects of the disease. But should we decide, moments into a human being's life, that because they carry this gene, it invalidates their entire existence?