no. there are several reasons
1. there is natural process of human make up,which if disrupts causes many disabilities. like mutation, as science has achieve many but can not engineer a perfect solution.
2. DNA have a certain pattern which if changed could made a human a liability. like getting genes from a sheep and engineered it in a lion which posses other traits. such causes an imbalance in the ecosystem and disrupting the biome. Loin behaving like sheep and sheep behaving like loin.
