PMID- 20006667 OWN - NLM STAT- MEDLINE DCOM- 20100907 LR - 20211203 IS - 1879-1166 (Electronic) IS - 0198-8859 (Linking) VI - 71 IP - 3 DP - 2010 Mar TI - Liver transplant recipients weaned off immunosuppression lack circulating donor-specific antibodies. PG - 274-6 LID - 10.1016/j.humimm.2009.12.002 [doi] AB - Human leukocyte antigen (HLA)-specific antibodies (Abs) were examined in 73 clinically stable liver transplant recipients divided into group A (n = 19; clinically tolerant), group B (n = 34; undergoing weaning, on minimal immunosuppression), and group C (n = 20; had failed drug withdrawal or weaning never attempted). Of 19 patients in group A, six (32%) had anti-HLA Abs; none were donor-specific. In contrast, 23 of 34 patients (67%) in group B and nine of 20 patients (45%) in group C exhibited anti-HLA Abs (p = 0.02). Furthermore, 15 of 19 patients in groups B and C (9/12, p = 0.01 and 6/7, p = 0.01, respectively) exhibited donor-specific anti-HLA Abs. The prevalence of donor-specific HLA Abs was significantly higher in nontolerant patients. Five years after initial evaluation, >90% (18/19) group A patients remained off immunosuppression. One of seven of these patients available for retesting exhibited donor-specific Abs. In group B, two-fourths of 34 patients (12%) weaned successfully were HLA-Ab negative; four patients who experienced rejection while undergoing weaning exhibited anti-HLA Ab initially and at 5 years. Thus, most of the liver recipients off immunosuppression lacked donor-specific alloAbs. The occurrence of these alloAbs should now be examined prospectively in a drug weaning trial. CI - (c) 2010 American Society for Histocompatibility and Immunogenetics. Published by Elsevier Inc. All rights reserved. FAU - Girnita, Alin AU - Girnita A AD - Thomas E. Starzl Transplantation Institute and Department of Pathology, University of Pittsburgh School of Medicine and Children's Hospital of Pittsburgh, Pennsylvania, USA. FAU - Mazariegos, George V AU - Mazariegos GV FAU - Castellaneta, Antonino AU - Castellaneta A FAU - Reyes, Jorge AU - Reyes J FAU - Bentlejewski, Carol AU - Bentlejewski C FAU - Thomson, Angus W AU - Thomson AW FAU - Zeevi, Adriana AU - Zeevi A LA - eng GR - P01 AI81678/AI/NIAID NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20091223 PL - United States TA - Hum Immunol JT - Human immunology JID - 8010936 RN - 0 (Antibodies) RN - 0 (HLA Antigens) SB - IM MH - Adolescent MH - Adult MH - Antibodies/blood MH - Child MH - Child, Preschool MH - Follow-Up Studies MH - Graft Rejection/*diagnosis/epidemiology/*immunology/physiopathology MH - HLA Antigens/*immunology MH - Humans MH - Immunosuppression Therapy MH - *Liver Transplantation MH - Middle Aged MH - Prevalence MH - Prognosis MH - Tissue Donors MH - Transplantation Tolerance MH - Withholding Treatment EDAT- 2009/12/17 06:00 MHDA- 2010/09/08 06:00 CRDT- 2009/12/17 06:00 PHST- 2009/11/24 00:00 [received] PHST- 2009/11/24 00:00 [revised] PHST- 2009/12/02 00:00 [accepted] PHST- 2009/12/17 06:00 [entrez] PHST- 2009/12/17 06:00 [pubmed] PHST- 2010/09/08 06:00 [medline] AID - S0198-8859(09)00656-9 [pii] AID - 10.1016/j.humimm.2009.12.002 [doi] PST - ppublish SO - Hum Immunol. 2010 Mar;71(3):274-6. doi: 10.1016/j.humimm.2009.12.002. Epub 2009 Dec 23.