The influence of HLA‐A,B and ‐DR matching and pregraft blood transfusions on graft and patient survival after renal transplantation in a single centre

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Abstract
The influence of HLA-A,B and DR matching and pregraft blood transfusions on the graft and patient survival rate of 305 recipients of first cadaver grafts was studied. All 3 factors significantly influenced the graft survival rate. The effect of HLA-A,B matching became apparent only after a follow-up period of 3 yr, whereas the effect of HLA-DR matching was seen within 3 mo. after transplantation. The survival rate of HLA-DR compatible grafts was not improved by additional HLA-A,B matching, but that of HLA-DR mismatched grafts was improved by HLA-A,B matching. The HLA-DR matching effect was seen in both transfused and in non-transfused patients. The highest graft survival rate seen was in the pregraft transfused patients who received a DR compatible kidney (87% at 1 yr and 80% at 5 yr). Both HLA-A,B and DR matching significantly increased the patient survival rate, whereas blood transfusion did not. The lower survival rate of patients receiving HLA poorly-matched grafts was not related to the amount of methylprednisolone received during the first 3 mo. after transplantation, the age of the patient, or whether the patient was considered medically high risk at the time of transplantation.