There are many aspects of what we call reality which we don't yet understand including magnetic and gravitational forces, light waves/photons, and such, but I think it's also important to keep ourselves from making categorical errors. If we're talking about oceans or lakes, we're in a different category than individual water molecules or the atoms which make them up or even the quarks and leptons which make up those atoms.
What do you mean by "Quantumly speaking"? When you say "There is only 1 DNA in several billion positions" that seems like an over simplification.
No, most "cancer cure" stuff I've seen seems to relate more to pseudoscientific woo than evidence (with a little placebo effect thrown in for flavor). I get that on a certain category everything is energy, but science likes reproducible results. Often people throw around scientific sounding words and "quantum theory" type stuff without providing anything reproducible. It's fun for those who like unprovable conspiracy theories and gnostic beliefs, but from what I've seen, much of it leads no where.
That said, I want to keep an open mind. I have seen some interesting things about using light to mess with individual cells and such. I'm interested in learning more. When you say "Everything is Energy" do you mean the book by Mike MacDonald? Would you recommend that as a starting point for the concepts you're describing?