While your son or his wife is at MD Anderson, have them ask about oleander extract. A very noted MD Anderson researcher named Robert Newman has led and participated in several studies about oleander. There is a patented medicine you can obtain from Honduras via FDA exception rule and there is also a dietary supplement form available from South Africa.
My own uncle had his brother in law make the same inquiries about oleander and came away very impressed - after which he began taking the medicine and is now cancer free.
If you would like more information, send me a private message. I have nothing I wish to sell you except hope.