On another call <a href="https://www.isoflex.com.br/differin-benzac-ac-g86g">how does differin gel work for wrinkles</a>  A chromosome therapy for humans would be fraught with practical and ethical difficulties. To prevent Down's syndrome, the genome editing would have to be performed on an embryo or foetus in the womb, and correct most, if not all, of the future child's cells. That is far beyond what is possible, or allowed, today.