PMID- 21452411 OWN - NLM STAT- MEDLINE DCOM- 20110502 LR - 20190713 IS - 1534-6080 (Electronic) IS - 0041-1337 (Linking) VI - 91 IP - 1 DP - 2011 Jan 15 TI - Association of mismatches for HLA-DR with incidence of posttransplant hip fracture in kidney transplant recipients. PG - 65-9 AB - BACKGROUND: Bone fractures are a frequent complication after kidney transplantation, for which various predisposing factors have been identified. It has been suggested that human leukocyte antigen (HLA) mismatch increases the risk. METHODS: Data on hip fractures occurring in the first 5 years posttransplant were analyzed among kidney transplants from deceased donors performed between 1995 and 2008 and reported to the Collaborative Transplant Study. RESULTS: In the 20,509 patients analyzed, the cumulative rate of hip fracture by year 5 posttransplant was 0.85%. Cox regression analysis identified the following risk factors: female recipients aged 40 to 59 years (hazard ratio [HR] 2.26, P=0.029), female recipients 60 years or older (HR 5.14, P<0.001), male recipients 60 years or older (HR 2.39, P=0.028), and donor age more than or equal to 60 years (HR 1.75, P=0.009). Using the rate of fractures in recipients with zero HLA-DR mismatch as the reference, the risk of hip fracture increased for grafts with one HLA-DR mismatch to HR 1.85 (95% confidence interval [CI] 1.18-2.89, P=0.007) and with two HLA-DR mismatches to HR 2.24 (CI 1.25-4.02, P=0.007). There was a significant association between the number of HLA-DR mismatches and the diagnosis of osteoporosis 5 years after transplantation: one HLA-DR mismatch risk ratio 1.26 (CI 1.12-1.43, P<0.001) and two HLA-DR mismatches risk ratio 1.45 (CI 1.20-1.74, P<0.001). CONCLUSION: The risk of hip fracture after kidney transplantation seems to be markedly exacerbated by HLA-DR mismatching. These findings add to the growing base of evidence that HLA-DR matching influences morbidity after kidney transplantation. FAU - Opelz, Gerhard AU - Opelz G AD - Department of Transplantation Immunology, University of Heidelberg, Heidelberg, Germany. FAU - Dohler, Bernd AU - Dohler B LA - eng PT - Journal Article PL - United States TA - Transplantation JT - Transplantation JID - 0132144 RN - 0 (Adrenal Cortex Hormones) RN - 0 (HLA-DR Antigens) RN - 0 (Immunosuppressive Agents) RN - 83HN0GTJ6D (Cyclosporine) RN - HU9DX48N0T (Mycophenolic Acid) RN - MRK240IY2L (Azathioprine) RN - WM0HAQ4WNM (Tacrolimus) SB - IM MH - Adrenal Cortex Hormones/adverse effects/therapeutic use MH - Adult MH - Azathioprine/adverse effects/therapeutic use MH - Cyclosporine/adverse effects/therapeutic use MH - Diabetic Nephropathies/immunology MH - Female MH - Graft Rejection/immunology MH - HLA-DR Antigens/*immunology MH - Hip Fractures/*immunology MH - Histocompatibility Testing MH - Humans MH - Immunosuppressive Agents/adverse effects/therapeutic use MH - Kidney Transplantation/*adverse effects/immunology MH - Male MH - Middle Aged MH - Mycophenolic Acid/adverse effects/therapeutic use MH - Postoperative Complications/drug therapy/immunology MH - Retrospective Studies MH - Tacrolimus/adverse effects/therapeutic use MH - Treatment Outcome EDAT- 2011/04/01 06:00 MHDA- 2011/05/03 06:00 CRDT- 2011/04/01 06:00 PHST- 2011/04/01 06:00 [entrez] PHST- 2011/04/01 06:00 [pubmed] PHST- 2011/05/03 06:00 [medline] AID - 10.1097/tp.0b013e3181fa94d6 [doi] PST - ppublish SO - Transplantation. 2011 Jan 15;91(1):65-9. doi: 10.1097/tp.0b013e3181fa94d6.