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The Annals of Thoracic Surgery, Vol 49, 220-223, Copyright © 1990 by The Society of Thoracic Surgeons
VJ DiSesa, PC Kuo, KA Horvath, GH Mudge, JJ Collins Jr and LH Cohn
Prospective human lymphocyte antigen (HLA) typing is not performed for
heart transplantation, and the relation between HLA matching and cardiac
graft rejection is unclear. Recipient and donor HLA matching were analyzed
retrospectively in 51 patients undergoing orthotopic cardiac
transplantation. Immunosuppression was based on cyclosporine and
prednisone. During the mean follow-up of 34 months (range, 16 to 63
months), the 46 operative survivors had an average of 3.95 rejection
episodes (range, zero to 11 episodes). Twenty-one patients had steroid-
resistant rejection requiring treatment with polyclonal or monoclonal
antithymocyte globulin. Human lymphocyte antigen typing was available for
44 patients, and antigens were grouped in broad specificities. Patients
with two or more HLA-A or HLA-B matches had a reduced number of rejection
episodes (3/10 versus 19/34) and a lower incidence of steroid-resistant
rejection (1/10 versus 18/34; p = 0.01). Inclusion of HLA-DR matches did
not alter the findings. There was a strong correlation between the
increased frequency of rejection and the incidence of steroid-resistant
rejection (p less than 0.0001). Four of six late deaths occurred in
patients with steroid-resistant rejection; four were due to acute rejection
and two to graft atherosclerosis. Although not currently done, prospective
HLA matching is feasible with present typing methods. Our results suggest a
rationale for prospective histocompatibility testing in cardiac
transplantation with allocation of donor hearts to patients with two or
more HLA matches.
ARTICLES
HLA histocompatibility affects cardiac transplant rejection and may provide one basis for organ allocation
Department of Surgery, Brigham and Women's Hospital, Boston, MA 02115.
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