IIRC that procedure has something like a 50/50 chance of not working and leaving the patient dead with no immune system. It's a hail Marry treatment for cancers

IIRC that procedure has something like a 50/50 chance of not working and leaving the patient dead with no immune system. It's a hail Marry treatment for cancers that are about to kill you anyway. Really cool that using the right donor can cure HIV, but not useful as a general treatment at any cost due to the high failure rate.