Hi,
We have a member whose daughter went through an unrelated BMT,and it was successful,but i have never heard about a mismatched BMT or CBT,and considering that transplant is a very risky process in itself,i don't think a mismatched transplant is a good idea unless you are fighting for your life,But i am not a doctor,i think you should discuss this topic with a transplant expert.
Zaini.