PMID- 27048228 OWN - NLM STAT- MEDLINE DCOM- 20170918 LR - 20220408 IS - 1432-198X (Electronic) IS - 0931-041X (Print) IS - 0931-041X (Linking) VI - 31 IP - 8 DP - 2016 Aug TI - Bortezomib may stabilize pediatric renal transplant recipients with antibody-mediated rejection. PG - 1341-8 LID - 10.1007/s00467-016-3319-3 [doi] AB - BACKGROUND: Current therapeutic strategies to effectively treat antibody-mediated rejection (AMR) are insufficient. Thus, we aimed to determine the benefit of a therapeutic protocol using bortezomib for refractory C4d + AMR in pediatric kidney transplant patients. METHODS: We examined seven patients with treatment-refractory C4d + AMR. Immunosuppression included antithymocyte globulin or anti-CD25 monoclonal antibody for induction therapy with maintenance corticosteroids, calcineurin inhibitor, and anti-metabolite. Estimated glomerular filtration rate (eGFR) calculated by the Schwartz equation, biopsy findings assessed by 2013 Banff criteria, and human leukocyte antigen (HLA) donor-specific antibodies (DSA) performed using the Luminex single antigen bead assay were monitored pre- and post- bortezomib therapy. RESULTS: Seven patients (86 % male, 86 % with >/=6/8 HLA mismatch, and 14 % with pre-formed DSA) age 5 to 19 (median 15) years developed refractory C4d + AMR between 1 and 145 (median 65) months post-transplantation. All patients tolerated bortezomib. One patient had allograft loss. Of the six patients with surviving grafts (86 %), mean pre-bortezomib eGFR was 42 ml/min/1.73 m(2) and the mean 1 year post-bortezomib eGFR was 53 ml/min/1.73 m(2). Five of seven (71 %) had improvement of histological findings of AMR, C4d staining, and/or acute cellular rejection. Reduction in HLA DSAs was more effective for class I than class II. CONCLUSIONS: Bortezomib appears safe and may correlate with stabilization of eGFR in pediatric kidney transplant patients with refractory C4d + AMR. FAU - Pearl, Meghan H AU - Pearl MH AD - Department of Pediatrics, Division of Nephrology, David Geffen School of Medicine at UCLA, University of California Los Angeles, PO Box 951752, Los Angeles, CA, 90095, USA. mpearl@mednet.ucla.edu. FAU - Nayak, Anjali B AU - Nayak AB AD - Department of Pediatrics, Division of Nephrology, David Geffen School of Medicine at UCLA, University of California Los Angeles, PO Box 951752, Los Angeles, CA, 90095, USA. FAU - Ettenger, Robert B AU - Ettenger RB AD - Department of Pediatrics, Division of Nephrology, David Geffen School of Medicine at UCLA, University of California Los Angeles, PO Box 951752, Los Angeles, CA, 90095, USA. FAU - Puliyanda, Dechu AU - Puliyanda D AD - Pediatric Nephrology and Transplant Immunology, Cedars Sinai Medical Center, Los Angeles, CA, USA. FAU - Palma Diaz, Miguel Fernando AU - Palma Diaz MF AD - Department of Pathology and Laboratory Medicine, David Geffen School of Medicine, University of California Los Angeles, PO Box 951752, Los Angeles, CA, USA. FAU - Zhang, Qiuheng AU - Zhang Q AD - Department of Pathology and Laboratory Medicine, David Geffen School of Medicine, University of California Los Angeles, PO Box 951752, Los Angeles, CA, USA. FAU - Reed, Elaine F AU - Reed EF AD - Department of Pathology and Laboratory Medicine, David Geffen School of Medicine, University of California Los Angeles, PO Box 951752, Los Angeles, CA, USA. FAU - Tsai, Eileen W AU - Tsai EW AD - Department of Pediatrics, Division of Nephrology, David Geffen School of Medicine at UCLA, University of California Los Angeles, PO Box 951752, Los Angeles, CA, 90095, USA. LA - eng GR - R01 AI042819/AI/NIAID NIH HHS/United States GR - T32 DK104687/DK/NIDDK NIH HHS/United States PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20160405 PL - Germany TA - Pediatr Nephrol JT - Pediatric nephrology (Berlin, Germany) JID - 8708728 RN - 0 (HLA Antigens) RN - 0 (Peptide Fragments) RN - 0 (Proteasome Inhibitors) RN - 69G8BD63PP (Bortezomib) RN - 80295-50-7 (Complement C4b) RN - 80295-52-9 (complement C4d) SB - IM MH - Adolescent MH - Bortezomib/*therapeutic use MH - Child, Preschool MH - Complement C4b/immunology MH - Female MH - Graft Rejection/*drug therapy MH - Graft Survival/drug effects MH - HLA Antigens/immunology MH - Humans MH - *Kidney Transplantation MH - Male MH - Peptide Fragments/immunology MH - Proteasome Inhibitors/*therapeutic use MH - Retrospective Studies MH - Young Adult PMC - PMC5590841 MID - NIHMS902284 OTO - NOTNLM OT - Antibody-mediated rejection OT - Bortezomib OT - Kidney OT - Non-adherence OT - Pediatric OT - Proteasome inhibitor OT - Transplant COIS- Conflict of Interest: The authors declare that they have no conflict of interest. EDAT- 2016/04/07 06:00 MHDA- 2017/09/19 06:00 PMCR- 2017/09/08 CRDT- 2016/04/07 06:00 PHST- 2015/10/05 00:00 [received] PHST- 2015/12/30 00:00 [accepted] PHST- 2015/12/28 00:00 [revised] PHST- 2016/04/07 06:00 [entrez] PHST- 2016/04/07 06:00 [pubmed] PHST- 2017/09/19 06:00 [medline] PHST- 2017/09/08 00:00 [pmc-release] AID - 10.1007/s00467-016-3319-3 [pii] AID - 10.1007/s00467-016-3319-3 [doi] PST - ppublish SO - Pediatr Nephrol. 2016 Aug;31(8):1341-8. doi: 10.1007/s00467-016-3319-3. Epub 2016 Apr 5.