PMID: 7547575Jan 1, 1994Paper

Refinement of permissible HLA mismatches

Clinical Transplants
S Takemoto, P I Terasaki

Abstract

Cadaver-donor transplants performed before 1987 that had survived for more than 7 years despite having all 6-A,B,DR antigens mismatched were used to develop a list of permissible mismatches. When these permissible mismatches were applied to an entirely different set of cadaver-donor grafts performed after 1987, patients with permissible mismatches had a higher graft survival than those with an equivalent number of immunogenic mismatches. In addition, a new list of permissible mismatches was produced from living-donor transplants which survived for more than one year despite having mismatches. When this list made from living-donor transplants was checked against cadaver-donor transplants, patients with one-permissible-A,B,DR mismatch had a projected 10-year graft survival equivalent to that of zero-A,B,DR mismatched transplants. Patients with one immunogenic mismatch had a significantly lower graft survival. Patients with only permissible mismatches had a higher graft survival than those with immunogenic mismatches and equivalent to patients with one immunogenic mismatch. It was projected that the percentage of patients who can benefit from a zero-A,B,DR mismatched transplant by national sharing can be doubled if one permissible...Continue Reading

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