Unfortunately, I'm not familiar with a work the possesses all the characteristics you've described. The closest to your description that I've read is the Athert

Unfortunately, I'm not familiar with a work the possesses all the characteristics you've described. The closest to your description that I've read is the Atherton trilogy by Patrick Carman although there aren't any mutations in that one. If you want to try your luck, you're best bet would be to ask this question on https://old.reddit.com/r/books https://old.reddit.com/r/books. What year do you remember reading the book in? That may help narrow it down.