PMID- 19417655 OWN - NLM STAT- MEDLINE DCOM- 20090924 LR - 20090715 IS - 1531-7013 (Electronic) IS - 1087-2418 (Linking) VI - 14 IP - 4 DP - 2009 Aug TI - The role of the histocompatibility laboratory in desensitization for transplantation. PG - 398-402 LID - 10.1097/MOT.0b013e32832c5983 [doi] AB - PURPOSE OF REVIEW: The ability of histocompatibility laboratories to define and monitor human leukocyte antigen (HLA)-specific antibodies via highly sensitive immunoassays has been a major contributing factor in the development of desensitization protocols for HLA-incompatible transplants. This review will focus on the laboratory's role in desensitization and the types of tests needed for determining the specificity and strength of antibodies to donor HLA pretransplant, during treatment, and after transplant. RECENT FINDINGS: Increasingly, solid-phase immunoassays that use purified HLA molecules are providing sensitive characterization of HLA-specific antibodies. Assay parameters, such as median fluorescence intensity, can be correlated with cross-match results and clinical outcomes, and subsequently used to monitor antibody status in patients undergoing desensitization. The strength of donor HLA-specific antibody, measured by cross-match and/or solid phase assays, is used to determine the likelihood of successful desensitization, as well as the risk of posttransplant antibody-mediated rejection. SUMMARY: Histocompatibility laboratories are essential components of desensitization programs. Thorough antibody characterization and serial monitoring of changes in antibody status are needed pretreatment, during treatment and after transplant. Because clinical decisions rely heavily on changes in antibody specificity and strength, desensitization should not be undertaken without access to appropriate histocompatibility testing. FAU - Leffell, Mary S AU - Leffell MS AD - Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA. msl@jhmi.edu FAU - Zachary, Andrea A AU - Zachary AA LA - eng PT - Journal Article PT - Review PL - United States TA - Curr Opin Organ Transplant JT - Current opinion in organ transplantation JID - 9717388 RN - 0 (Antibodies) RN - 0 (HLA Antigens) RN - 0 (Immunoglobulins, Intravenous) RN - 0 (Immunosuppressive Agents) SB - IM MH - Antibodies/blood MH - Antibody Specificity MH - *Desensitization, Immunologic/methods MH - Graft Rejection/immunology/prevention & control MH - HLA Antigens/immunology MH - *Histocompatibility MH - *Histocompatibility Testing/methods MH - Humans MH - Immunoassay MH - Immunoglobulins, Intravenous/therapeutic use MH - Immunosuppressive Agents/therapeutic use MH - *Laboratories MH - *Organ Transplantation/adverse effects MH - Plasmapheresis MH - *Tissue Donors MH - Treatment Outcome RF - 30 EDAT- 2009/05/07 09:00 MHDA- 2009/09/25 06:00 CRDT- 2009/05/07 09:00 PHST- 2009/05/07 09:00 [entrez] PHST- 2009/05/07 09:00 [pubmed] PHST- 2009/09/25 06:00 [medline] AID - 10.1097/MOT.0b013e32832c5983 [doi] PST - ppublish SO - Curr Opin Organ Transplant. 2009 Aug;14(4):398-402. doi: 10.1097/MOT.0b013e32832c5983.