I suggest you take a basic course in bio-chemistry before you continue to make silly assertions.
In laymen terms, I'll do you a favor an educate you. Let's begin
1. DNA is command center, that dictates how protein production works.
2. CCR5 is a protein, found on the out edge of macrophages (a basic form of white blood cells). CCR5 is important because it acts as basically an essential hook or receptor in which the HIV virus tries to "latch on to" to gain entry.
3. Drugs try to stop this receptor from functioning, and a small DNA mutation could make people less susceptible. (DNA's control proteins)
4. There is nothing such as the "DNA mutation CCR5"
So no, you don't know what you are talking about.