PMID- 30507703 OWN - NLM STAT- MEDLINE DCOM- 20200115 LR - 20200115 IS - 1531-7013 (Electronic) IS - 1087-2418 (Linking) VI - 24 IP - 1 DP - 2019 Feb TI - Measuring alloantibodies: a matter of quantity and quality. PG - 20-30 LID - 10.1097/MOT.0000000000000593 [doi] AB - PURPOSE OF REVIEW: This review describes the utility and limitations of measure for assessing the presence, relative strength, and clinical impact of human leukocyte antigen (HLA) alloantibodies, as well as the other qualitative features of antibodies that are important considerations in assessing patient risk. RECENT FINDINGS: Using MFI as a measure of antibody amount is limited for a variety of reasons. Standardized serum manipulations such as ethylene-diamine-tetra-acetic acid treatment or serum dilution results in better definition of relationships between MFI and antibody titer or complement activation, toward greater alignment in defining positivity. Increased understanding of HLA epitopes has improved the ability to precisely define donor specific HLA antibody (DSA) specificities and the analysis of structural HLA Class II epitope mismatches in donor-recipient pairs may assist in the prevention of de novo DSA development. Studies of antibody isotypes and immunopathological mechanisms underlying graft injury mediated by non-HLA antibodies are expanding the assessemnt of immunological risk. SUMMARY: Careful analysis of both semiquantitative and qualitative properties of donor-specific antibodies continues to improve our ability to study the effects of DSA on clinical outcomes in solid organ transplantation. FAU - Kiernan, Jeffrey J AU - Kiernan JJ AD - Regional HLA Laboratory, Laboratory Medicine Program, University Health Network. FAU - Ellison, Cynthia A AU - Ellison CA AD - Regional HLA Laboratory, Laboratory Medicine Program, University Health Network. AD - Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Canada. FAU - Tinckam, Kathryn J AU - Tinckam KJ AD - Regional HLA Laboratory, Laboratory Medicine Program, University Health Network. AD - Division of Nephrology, University Health Network. AD - Department of Medicine, University of Toronto. AD - Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Canada. 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 (Isoantibodies) SB - IM MH - Female MH - Humans MH - Isoantibodies/*immunology MH - Male MH - Organ Transplantation/*methods MH - Tissue Donors EDAT- 2018/12/07 06:00 MHDA- 2020/01/16 06:00 CRDT- 2018/12/04 06:00 PHST- 2018/12/07 06:00 [pubmed] PHST- 2020/01/16 06:00 [medline] PHST- 2018/12/04 06:00 [entrez] AID - 10.1097/MOT.0000000000000593 [doi] PST - ppublish SO - Curr Opin Organ Transplant. 2019 Feb;24(1):20-30. doi: 10.1097/MOT.0000000000000593.