Medical advancements have helped clarify "matches" between patients and potential donors for hematopoietic stem-cell transplants (HSCT). Typically, a(an) ___ donor has a lower risk of GVHD (graft-versushost disease) complications, while transplants with donors decrease the risk of cancer relapse. allogeneic with mismatched HLA ; syngeneic syngeneic with mismatched HLA; autologous random donor; anyone's guess on HLA match allogenic with matched HLA; autologus autologus; high allogeneic HLA matched.