Background: Deoxyspergualin (DSG) prophylaxis has improved long-term graft survival in living-related renal-transplant recipients transfused with donor-specific blood (DST). We examined the influence of acute rejection (AR) on graft survival in these patients.
Methods: The study groups consisted of either historic control recipients without DSG (group A, n=64, 1985-1989) and recipients with DSG as the initial immunosuppressive agent (group B, n=76, 1989-1995). Both groups received DST from a one-haplotype identical donor and were treated with cyclosporine-based immunosuppression. Rejection was classified into accelerated rejection (Acc, within 5 days), AR (from 6 days-3 months), and late AR (LAR, from 4 months-1 year).
Results: Overall 5-year graft survival rates were significantly higher in group B than group A (89.5 vs. 73.4%, P=0.0070). Each group was then subdivided on the basis of whether or not they had an episode of Acc, AR, or LAR. In group A, 5-year graft survival rate was not affected the presence or absence of Acc (75.0 vs. 73.1%), and it was influenced significantly by the presence or absence of AR (50.0 vs. 85.7%, P=0.0012) or LAR (46.7 vs. 81.6%, P<0.0001). In group B, 5-year graft survival did not change significantly by the presence or absence of Acc (100 vs. 88.7%), AR (81.8 vs. 92.6%), or LAR (81.0 vs. 92.7%).
Conclusions: Prophylactic use of DSG in living-related renal-transplant recipients treated with DST improves long-term graft survival, even in patients with AR episodes.
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