Comment by gpjt
How much of that low survival rate is due to the condition they received the transplant, though? Conceivably a patient with "just" HIV might do better than one with eg. leukemia and HIV.
That said, IIUC the whole stem cell transplant procedure is unpleasant enough that it still might not be worth it.
About half?
"The major cause of death is relapse, which accounts for approximately 40% of all deaths, followed by infections at 25% and graft-versus-host disease (GVHD) at 20%."
https://www.sciencedirect.com/science/article/pii/S266663672...
A good friend of mine died from a C. Diff infection in the hospital after a bone marrow transplant. It is very risky, especially with an imperfect match.
That said, you can help make it less risky! This used to be called "Be The Match", not sure why they renamed it but you could save someone's life by registering to be a donor:
https://www.nmdp.org/