Gene mismatch influences success of bone marrow transplants

A commonly inherited gene deletion can increase the likelihood of immune complications following bone marrow transplantation, researchers report. When the gene, called UGT2B17, is missing from the donor's genome but present in the recipient's, transplants have a significantly greater risk of a serious side-effect known as graft-versus-host disease, in which immune cells from the donor attack tissues in the recipient.

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