Give it to a pile o' patients. If they are cured the testing is complete. Next step would be over the counter. I wish. And it isn't the FDA's fault, either. One of those patients dies and the relatives sue the company - drug companies are all big and rich, dontcha know - sue for the Big Bucks. Ain't gonna happen.
Besides, it's a long way from dropping the stuff into a suspension of cancer cells and managing to get it into the appropriate site in the body in the proper concentration, once we even figure out what that is. Shoot enough straight penicillin into a patient and you kill him. This is nowhere near ready to field yet.
You are exactly correct. We both know why the preliminary clinical work will be done in ZA.
Not that human life is not respected there, the old British values are still intact there. Rather, it is the unreasonableness of the US legal system that stifles progress in clinical research.
Lots of US pharmaceutical research scientists work in international teams in Africa to get prelim human response data. They can proceed in unfettered manner for the most part. Their only constraint is that any treatment be affordable to the African population. This often forces them to look at natural alternatives which can be a good thing.