Effects of antibody induction on transplant outcomes in human leukocyte antigen zero-mismatch deceased donor kidney recipients.
BACKGROUND
We aimed to investigate the impact of antibody induction on outcomes in human leukocyte antigen (HLA) 0-mismatched deceased donor kidney recipients.


METHODS
Using the Organ Procurement and Transplant Network/United Network of Organ Sharing database as of November 2009, we identified 44,008 adult deceased donor kidney recipients who received primary kidney transplants alone between 2003 and 2008 (HLA 0 mismatch, n = 6274; ≥ 1 mismatch, n=37,734; median follow-up: 834 days). The impact of induction (thymoglobulin, interleukin-2 receptor antagonists [IL-2RA], or alemtuzumab; vs. no induction) on rejection (initial hospitalization, 6 months, first year), death-censored graft failure, and mortality were analyzed using multivariate logistic and Cox regression in the two groups. The impact of individual agents on outcomes was further analyzed in 0-mismatch recipients.


RESULTS
There was a decreased risk of rejection over the first 6 months for HLA 0-mismatch recipients of antibody induction (adjusted odds ratio=0.71, P=0.003), but this effect was not observed at 1 year; in comparison, induction was associated with a reduced risk of rejection over the first year for HLA-mismatched recipients (0.87, P<0.001). The use of thymoglobulin (0.72, P=0.02) and IL-2RA (0.67, P=0.004) was associated with a decreased risk of rejection compared with no-induction at 6 months but was not different at 1 year (thymoglobulin: 0.77, P=0.05; IL-2RA:0.81, P=0.11) in HLA 0-mismatched recipients. Induction was not associated with improved graft or patient survival in HLA 0-mismatch recipients.


CONCLUSIONS
In HLA 0-mismatch deceased donor recipients, antibody induction was associated with a decreased risk of rejection at 6 months posttransplant. Its use did not improve graft and patient survival over the follow-up period.
Division of Nephrology, Department of Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA.
Hung-Tien
HT
Kuo
Edmund
E
Huang
Sina
S
Emami
Phuong-Thu
PT
Pham
Alan H
AH
Wilkinson
Gabriel M
GM
Danovitch
Suphamai
S
Bunnapradist
D000293:Adolescent; D000328:Adult; D000074323:Alemtuzumab; D061067:Antibodies, Monoclonal, Humanized / Q000627:therapeutic use*; D000961:Antilymphocyte Serum / Q000627:therapeutic use*; D005260:Female; D006084:Graft Rejection / Q000276:immunology / Q000401:mortality / Q000517:prevention & control*; D006085:Graft Survival / Q000187:drug effects*; D006680:HLA Antigens / Q000276:immunology*; D006648:Histocompatibility; D006650:Histocompatibility Testing; D006801:Humans; D007166:Immunosuppressive Agents / Q000627:therapeutic use; D053208:Kaplan-Meier Estimate; D016030:Kidney Transplantation / Q000276:immunology* / Q000401:mortality; D016015:Logistic Models; D008297:Male; D008875:Middle Aged; D015999:Multivariate Analysis; D016017:Odds Ratio; D016016:Proportional Hazards Models; D015375:Receptors, Interleukin-2 / Q000276:immunology; D012042:Registries; D012189:Retrospective Studies; D018570:Risk Assessment; D012307:Risk Factors; D013997:Time Factors; D009927:Tissue and Organ Procurement; D016896:Treatment Outcome; D014481:United States; D055815:Young Adult
D061067:Antibodies, Monoclonal, Humanized; D000961:Antilymphocyte Serum; D006680:HLA Antigens; D007166:Immunosuppressive Agents; D015375:Receptors, Interleukin-2; D000074323:Alemtuzumab; C512542:thymoglobulin