Hi,
I think most cancer is because the Immune system is failing!! I have a hard time believing it is Genetic. The Medical Community has been looking at Genes for years and cannot come up with an answer. If it was genetic and a gene was turned off I believe the body would die more quickly. I suppose there are those out there that belive it is both. The way Cancer will be treated successfully one day it by Biological agents tricking the Immune system into killing cancerous cells and tumors.
Tom