PT - JOURNAL ARTICLE AU - Thorsten Zenz AU - Richard F. Schlenk AU - Gerhard Glatting AU - Bernd Neumaier AU - Norbert Blumstein AU - Inga Buchmann AU - Stephanie von Harsdorf AU - Mark Ringhoffer AU - Markus Wiesneth AU - Frieder Keller AU - Jörg Kotzerke AU - Erwin Röttinger AU - Stephan Stilgenbauer AU - Hartmut Döhner AU - Sven N. Reske AU - Donald Bunjes TI - Bone Marrow Transplantation Nephropathy after an Intensified Conditioning Regimen with Radioimmunotherapy and Allogeneic Stem Cell Transplantation DP - 2006 Feb 01 TA - Journal of Nuclear Medicine PG - 278--286 VI - 47 IP - 2 4099 - http://jnm.snmjournals.org/content/47/2/278.short 4100 - http://jnm.snmjournals.org/content/47/2/278.full SO - J Nucl Med2006 Feb 01; 47 AB - Intensification of the conditioning regimen with a radioactively labeled anti-CD66 antibody is feasible before allogeneic stem cell transplantation. The use of radioimmunotherapy may deliver a significant dose of radiation to the kidneys. We therefore studied the incidence and clinical picture of bone marrow transplantation (BMT) nephropathy in our patients receiving radioimmunotherapy before allogeneic stem cell transplantation. Methods: This study was a clinical trial of 114 consecutive patients who received conditioning with a radiolabeled anti-CD66 antibody—188Re (n = 93) or 90Y (n = 21)—between 1998 and 2003. Results: Although BMT nephropathy has developed in none of the patients in the [90Y]anti-CD66 group, 6 of 93 patients receiving [188Re]anti-CD66 presented with signs of BMT nephropathy at a median of 11.5 mo after stem cell transplantation. The absorbed renal dose was significantly lower in the 90Y group (4 vs. 7 Gy, P < 0.0001). Of the patients receiving [188Re]anti-CD66 who are alive, BMT nephropathy developed in 19% (6/32). Five of 6 patients with BMT nephropathy received total-body irradiation. The patients presented with elevated serum creatinine, proteinuria, anemia, hypertension, and signs of microangiopathy. All 6 patients in whom BMT nephropathy has developed are alive at a median follow-up of 58 mo after stem cell transplantation, and 1 patient has entered a dialysis program. Conclusion: BMT nephropathy appears to be a significant problem after allogeneic stem cell transplantation with intensified conditioning using the 188Re-labeled anti-CD66 applied in this study, particularly when combined with total-body irradiation.