PMID- 25054778 OWN - NLM STAT- MEDLINE DCOM- 20160425 LR - 20211021 IS - 1523-1755 (Electronic) IS - 0085-2538 (Print) IS - 0085-2538 (Linking) VI - 87 IP - 2 DP - 2015 Feb TI - A closer look at rituximab induction on HLA antibody rebound following HLA-incompatible kidney transplantation. PG - 409-16 LID - 10.1038/ki.2014.261 [doi] AB - Rituximab has been used to increase the efficacy of desensitization protocols for human leukocyte antigen (HLA)-incompatible kidney transplantation; however, controlled comparisons have not been reported. Here we examined 256 post-transplant HLA antibody levels in 25 recipients desensitized with and 25 without rituximab induction, to determine the impact of B-cell depletion. We found significantly less HLA antibody rebound in the rituximab-treated patients (7% of donor-specific antibodies (DSAs) and 33% of non-DSAs) compared with a control cohort desensitized and transplanted without rituximab (32% DSAs and 55% non-DSAs). The magnitude of the increase was significantly larger among patients who did not receive rituximab. Interestingly, in rituximab-treated patients, of the 39 HLA antibodies that increased post transplant, 34 were specific for HLA mismatches present in previous allografts or pregnancies, implying limited efficacy in memory B-cell depletion. Compared with controls, rituximab-treated patients had a significantly greater mean reduction in DSA (-2505 vs. -292 mean fluorescence intensity), but a similar rate of DSA persistence (52% in rituximab treated-and 40% in non-treated recipients). Thus, rituximab induction in HLA-incompatible recipients reduced the incidence and magnitude of HLA antibody rebound, but did not affect DSA elimination, antibody-mediated rejection, or 5-year allograft survival when compared with recipients desensitized and transplanted without rituximab. FAU - Jackson, Annette M AU - Jackson AM AD - Department of Medicine, Johns Hopkins University, Baltimore, Maryland, USA. FAU - Kraus, Edward S AU - Kraus ES AD - Department of Medicine, Johns Hopkins University, Baltimore, Maryland, USA. FAU - Orandi, Babak J AU - Orandi BJ AD - Department of Surgery, Johns Hopkins University, Baltimore, Maryland, USA. FAU - Segev, Dorry L AU - Segev DL AD - Department of Surgery, Johns Hopkins University, Baltimore, Maryland, USA. FAU - Montgomery, Robert A AU - Montgomery RA AD - Department of Surgery, Johns Hopkins University, Baltimore, Maryland, USA. FAU - Zachary, Andrea A AU - Zachary AA AD - Department of Medicine, Johns Hopkins University, Baltimore, Maryland, USA. LA - eng GR - R01 DK098431/DK/NIDDK NIH HHS/United States GR - RC1 DK086731/DK/NIDDK NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20140723 PL - United States TA - Kidney Int JT - Kidney international JID - 0323470 RN - 0 (HLA Antigens) RN - 0 (Isoantibodies) RN - 4F4X42SYQ6 (Rituximab) SB - IM CIN - Kidney Int. 2015 Feb;87(2):277-9. PMID: 25635721 MH - Adult MH - B-Lymphocytes/immunology MH - Desensitization, Immunologic MH - Female MH - *HLA Antigens MH - Histocompatibility Testing MH - Humans MH - Immunologic Memory MH - Isoantibodies/*biosynthesis MH - *Kidney Transplantation MH - Lymphocyte Activation MH - Lymphocyte Depletion MH - Male MH - Middle Aged MH - Rituximab/*therapeutic use MH - Time Factors PMC - PMC4305036 MID - NIHMS608433 EDAT- 2014/07/24 06:00 MHDA- 2016/04/26 06:00 PMCR- 2015/08/01 CRDT- 2014/07/24 06:00 PHST- 2014/03/24 00:00 [received] PHST- 2014/05/22 00:00 [revised] PHST- 2014/06/05 00:00 [accepted] PHST- 2014/07/24 06:00 [entrez] PHST- 2014/07/24 06:00 [pubmed] PHST- 2016/04/26 06:00 [medline] PHST- 2015/08/01 00:00 [pmc-release] AID - S0085-2538(15)30050-8 [pii] AID - 10.1038/ki.2014.261 [doi] PST - ppublish SO - Kidney Int. 2015 Feb;87(2):409-16. doi: 10.1038/ki.2014.261. Epub 2014 Jul 23.