Comment by SiempreViernes
3 years ago
Using humans, N = 18. Quick search didn't give any estimate of the chance probability of all going into remission by unrelated reasons, but I imagine it's pretty high compared to the number of small cancer trials run around the world.
Cancer rarely, if ever goes into remission on its own (rectal cancer, specifically). You would never see this happen randomly to everybody in a trial unless there was some external factor.
I don't have a link handy but I have read in the past some cases of trial participants being ejected from a trial because they started prolonged fasting and killed their cancer cells. I suppose that is in line with the external factor you mention.