And even the Cancer drugs that "work" and are registered only improve stuff like PFS and OS (overall survival) a couple of months in most cases. Cancer treatments tend to work for some time until the illness finds a new pathway rendering the treatment ineffective. It's frankly pretty depressing to look at the survival curves with and without a new drug. You don't save many people anyway.
You really can't make such statements about "cancer". Stage II lung cancer? You will probably die in a few months, surviving five years isn't very likely. Stage 4b Hodgkin's lymphoma at the age of 18? You have a decent chance of getting to know your grand children.
