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Desensitization therapy in kidney transplantation cases with positive baseline complement-dependent cytotoxicity crossmatch and high donor-specific antibodies: A retrospective study

Objective: The objective of the study is to assess the graft and patient outcome after desensitization in human leukocyte antigen incompatible kidney transplantation (KT) with positive baseline complement-dependent cytotoxic (CDC) crossmatch and high mean fluorescein intensity (MFI) of donor-specific antibodies (DSA). Methods: This was a retrospective study conducted at Jaypee Hospital, Noida. This study included highly sensitized patients who were transplanted with positive CDC and DSA >10,000 MFI for single antigen or >5000 MFI for multiple donor antigens. The patient's renal outcomes were documented. The desensitization protocol consisted of rituximab, therapeutic plasma exchanges (TPE), and thymoglobulin. Results: A total of five patients who had positive CDC crossmatch with very high level of preformed DSA underwent KT. Three patients had end-stage renal disease due to diabetic kidney disease while other two due to autosomal dominant polycystic kidney disease and chronic glomerulonephritis. All the patients were on dialysis. The MFI by Luminex single antigen bead assay for Class I varied from 1657 to 23440 and for Class II varied from undetectable to 11120. The mean number of pretransplant TPE sessions given per patient was 7.8 ± 2.68 and posttransplant TPE sessions per patient was 0.8 ± 0.45. The mean follow-up period was 308.2 days. Mean creatinine on the day of discharge was 0.58 ± 0.17 mg/dL. None of the patients had any postoperative infections or rejections. Conclusion: The current report showed favorable short-term patient and graft outcomes post-KT without any postoperative infections or rejections with desensitization therapy comprising of rituximab, TPE, and thymoglobulin induction.