Do not believe them for a second.
Cancer treatment ans blockchain? Run as far as you can get form this one, 100% scam.
No legitimate cancer treatment which has shown good trails needs tokens to get them going, big pharma would rush in with stacks of money before we could blink.
RED FLAGS ALL OVER HERE
There is a big chance, that big medical companies will try to steal there work first. They are trying to find resources in order to not to be under someone big and fat.