Abstract
Despite a high incidence of renal failure, disproportionately fewer Indo-Asians in the United Kingdom receive a renal transplant, in part because of the high prevalence of blood group B. It is now clear that it is possible to safely transplant kidneys from donors with blood group A of the subtype A2 into recipients with blood group B if the latter have low titers of anti-A antibodies. We measured the anti-A titers in 25 Indo-Asian patients on dialysis being considered for transplantation and found stably low titers in all. Titers were comparable to those found in a control white population with blood group B. In addition, in a complement-dependent cytotoxicity crossmatch against group A lymphocytes, the only positive results were obtained in those with high preexisting panel reactivity (i.e., because of the presence of preformed anti-human leukocyte antigen antibodies). We conclude that there are grounds for investigating this approach further to solve the ethnic disparity in rates of transplantation.
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