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Nefrología (Madrid)

versión impresa ISSN 0211-6995

Resumen

OPPENHEIMER SALINAS, Federico et al. ABO incompatible living donor kidney transplantation: a dream come true. Experience of Hospital Clínic of Barcelona. Nefrología (Madr.) [online]. 2010, vol.30, n.1, pp.54-63. ISSN 0211-6995.

Introduction: During the last years the number of patients on waiting list for kidney transplantation has been stable. Living donor kidney transplantation is nowadays a chance to increase the pool of donors. However, there are a group of patients with ABO incompatibility, making impossible the transplant until now. The aim of the present study is to describe the experience of Hospital Clinic Barcelona on ABO incompatible living transplantation. Material and methods: A retrospective-descriptive study was made based on 11 living donor kidney recipients with ABO incompatibility in Hospital Clinic of Barcelona from October'06 to January'09. Selective blood group, antibody removal with specific immunoadsortion, immunoglobulin and anti-CD20 antibody were made until the immunoglobulin (IgG) and isoaglutinine (IgM) antibody titters were 1/8 or lower. Immunosuppressive protocol was adjusted to particular recipient characteristics. Isoaglutinine titters were set before, during and post desensitization treatment and two weeks after transplant. Immunological, medical and surgical evaluation was the standard in living donor kidney transplant program. Results: Medium age of donors and recipients were 47.8 ±12.4 and 44.4 ± 14.1 years, respectively. 90% of donors were females and 73% of recipients males. Follow-up time was 10.2 ±10.2 months. Siblings and spouses were the most frequent relation (n = 4, 36.4%, respectively). Chronic glomerulonephritis, adult polycystic kidney disease and Alport syndrome, the most frequent cause of end-stage renal disease. All the patients acquire appropriate isoaglutinine titters pre transplant (<1/8), requiring 5.54 ± 2.6 immunoadsorption sessions pretransplant and 2.82 postransplant. One patient didn't need any immunoadsorption session (incompatibility blood group B) and another patient plasma exchange instead of immunoadsorption for being hipersensitized with positive flow cytometry crossmath. Postransplant isoaglutinine titters remained low. Two patients had cellular acute rejection episode (type IA and IB of Banff classification) with good response to corticosteroid treatment. Patient and graft survival were 91% at first year and remain stable during the follow-up. A graft lost by death of patient in relation to haemorrhagic shock developed within the first 72 hours after transplantation. Renal graft function at first year was excellent with serum creatinina of 1.3 ± 0.8 mg/dl, creatinine clearance of 62.6 ml/min/1.73 m2 and proteinuria of 244.9 mg/U 24 h. Conclusion: ABO incompatible living donor kidney transplantation represent an effective and safe alternative in certain patients on waiting list for renal transplant, obtaining excellent results in patient and graft survival, with good renal graft function.

Palabras clave : Living donor kidney transplantation; ABO incompatibility; Immunoadsorption; Rituximab.

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