A very close friend was supposed to go through this treatment almost two years ago. Unfortunately for him, you need to be is pretty good shape before this is begun and his cancer was spreading to various places in his body and he was never quite to the point where the doctors felt he could tolerate a new form of treatment. All I could think of was that the oncologists were stuck in a deadly game of whackamole; hit that place where the cancer was discovered and it popped up somewhere else. When the cancer spread to his brain, it was all over. By then his estimated of survival was, maybe, six weeks and he lasted less than a week after the discovery of it having gotten into the brain. Maybe if the original "We got it in time, there's nothing in the lymph nodes"[*] had been followed up with this treatment he'd still be around. When it was discovered to have returned it was probably already too late.
[*] -- The cancer that was discovered a couple of years ago was found to be the same one that he'd had surgery/chemo for years earlier. My feeling is that `clean' lymph nodes are probably a false hope. What evidence is there that cancer always leaves a trace in the lymph nodes anyway?