Earlier quoted context omitted.
Amazing. And shameful (for them.)
It’s not shameful, it’s how evidence based medicine works. One case is interesting but not a basis for changing a protocol by itself. Tons of things could have influenced the outcome and you need a proper study to know that.
The oncologist could have written a paper (there are many single case papers), or started a trial by himself (requires a lot of organizing) if he was very intrigued. But of course one can’t do that for every above average case.
I have to say, in this particular case there is a very plausible mechanism and the trial would not be that hard. So it is a real shame that nothing was done with this.