PMID- 19300192 OWN - NLM STAT- MEDLINE DCOM- 20090514 LR - 20220321 IS - 1534-6080 (Electronic) IS - 0041-1337 (Linking) VI - 87 IP - 6 DP - 2009 Mar 27 TI - Rises and falls in donor-specific and third-party HLA antibody levels after antibody incompatible transplantation. PG - 882-8 LID - 10.1097/TP.0b013e31819a6788 [doi] AB - BACKGROUND: After human leukocyte antigen (HLA) antibody-incompatible transplantation, donor specific and third party HLA antibodies may be found, and their levels fall in a donor-specific manner during the first month. However, these changes have not been previously described in detail. METHODS: Donor-specific HLA antibody (DSA) and third-party HLA antibody (TPA) levels were measured using the microbead method in 44 presensitized patients who had renal transplantation. RESULTS: DSA+TPA fell in the first 4 days after transplantation, and greater falls in DSA indicated absorption by the graft. This occurred for class I (57.8% fall compared with 20.2% for TPA, P<0.0005), HLA DR (63.0% vs. 24.3%, P<0.0004), and for HLA DP/DQ/DRB3-4 (34% vs. 17.5%, P=0.014). Peak DSA levels occurred at a mean of 13 days posttransplant, and they were higher than pretreatment in 25 (57%) patients and lower in 19 (43%) patients (P=ns). The risk of rejection was associated with peak DSA levels; 15 of 25 (60%) patients with DSA at median fluorescence intensity (MFI) more than 7000U experienced rejection, compared with 4 of 7 (57%) patients with peak DSA MFI 2000 to 7000U, and 2 of 12 (17%) patients with peak DSA MFI less than 2000U (P<0.02). DSA levels subsequently fell in a donor specific manner compared to TPA. CONCLUSION: DSA levels may change markedly in the first month after antibody incompatible transplantation, and the risk of rejection was associated with higher pretreatment and peak levels. FAU - Higgins, Rob AU - Higgins R AD - Transplant Unit, University Hospitals Coventry and Warwickshire, Coventry, West Midlands, United Kingdom. Robert.Higgins@uhcw.nhs.uk FAU - Lowe, David AU - Lowe D FAU - Hathaway, Mark AU - Hathaway M FAU - Lam, For AU - Lam F FAU - Kashi, Habib AU - Kashi H FAU - Tan, Lam Chin AU - Tan LC FAU - Imray, Chris AU - Imray C FAU - Fletcher, Simon AU - Fletcher S FAU - Chen, Klaus AU - Chen K FAU - Krishnan, Nithya AU - Krishnan N FAU - Hamer, Rizwan AU - Hamer R FAU - Zehnder, Daniel AU - Zehnder D FAU - Briggs, David AU - Briggs D LA - eng PT - Journal Article PT - Multicenter Study PL - United States TA - Transplantation JT - Transplantation JID - 0132144 RN - 0 (HLA Antigens) RN - 0 (HLA-DR Antigens) RN - 0 (Immunosuppressive Agents) RN - 0 (Isoantibodies) RN - 9PHQ9Y1OLM (Prednisolone) RN - HU9DX48N0T (Mycophenolic Acid) RN - WM0HAQ4WNM (Tacrolimus) SB - IM MH - Blood Group Incompatibility/*immunology MH - Female MH - Graft Rejection/immunology MH - HLA Antigens/*immunology MH - HLA-DR Antigens/immunology MH - Histocompatibility Testing/methods MH - Humans MH - Immunosuppressive Agents/therapeutic use MH - Isoantibodies/*immunology MH - Kidney Transplantation/*immunology MH - Living Donors/statistics & numerical data MH - Male MH - Mycophenolic Acid/analogs & derivatives/therapeutic use MH - Prednisolone/therapeutic use MH - Tacrolimus/therapeutic use EDAT- 2009/03/21 09:00 MHDA- 2009/05/15 09:00 CRDT- 2009/03/21 09:00 PHST- 2009/03/21 09:00 [entrez] PHST- 2009/03/21 09:00 [pubmed] PHST- 2009/05/15 09:00 [medline] AID - 00007890-200903270-00015 [pii] AID - 10.1097/TP.0b013e31819a6788 [doi] PST - ppublish SO - Transplantation. 2009 Mar 27;87(6):882-8. doi: 10.1097/TP.0b013e31819a6788.