I lost only an uncle about 35 years ago to cancer, but my wife's family a few, one younger than 30 and her brother in law had it and now cured.
I believe we have some cures and there is doubts in me that they are holding back for population control, just like HIV. Has HIV been envogue in the last 10 years? No it hasn't. There are several celebrities that have it yet, they are fine, it makes me wonder. I will leave it at that.
Now, about Cancer, I know that a lot of it can be stopped, but some don't get screened soon enough because almost a lot of them can be and if they don't we can't cure them.
I know of three we can't cure for sure and proven as such, even prevent medicine can't stop it like others.
Pancreas
Brain
Lungs
The first two unavoidable, the last is mostly on the person.