...bench researchers have stated that they can cure cancer in rats, but it does not convey to humans for some reason.
I believe that emotions/mentality/attitude play a big role in health and disease and in the immune system.
A rodent isn’t a model for the human in this regard, and any therapy for emotionally devastating disease needs to take psychology into account. I honestly believe that we could come up with the ‘universal cancer drug’, and many people would still fail to respond to it.