Thank you for your question. This is an answer provided in Code of Practice for Muslims in the West by Ayatullah Sistani:
Question: Some experts of genetic engineering claim that they can improve the human race by altering the genes in the following ways: Removing the ugliness of the face; Replacing it with beautiful characteristics; By both of the above. Is it permissible for the scientists to engage in these kinds of activities? Is it permissible for a Muslim to allow the doctors to alter his genes?
Answer: If there are no side effects, then, in principle, there is no problem in it.
May you always be successful