title: Long-term Outcomes of ABO-Incompatible Living Donor Kidney Transplantation: A Comparative Analysis.
abstract: BACKGROUND
  Although ABO-incompatible kidney transplantation has become more common due to organ shortage, few studies on long-term outcomes have been performed in the Korean population.
  
  
  METHODS
  A retrospective review of medical records was conducted for individuals who underwent living donor kidney transplantation at Asan Medical Center from February 2009 to January 2012.
  
  
  RESULTS
  A total of 469 patients were included; the mean age was 42.8 ± 11.8 years, and the median follow-up period was 45 (range, 1-65) months. ABO-incompatible recipients (73) were compared with ABO-compatible patients (396). Patient survival was similar between the ABO-incompatible group (97.3% and 95.9% at 1 and 3 years) and the ABO-compatible group (99.0% and 98.5% at 1 and 3 years; P = .136). Death-censored graft survival was also comparable between groups (98.6% vs 99.7% at 1 year; 98.6% vs 98.7% at 3 years; P = .386). Graft function, acute rejection, and postoperative complications were not significantly different between groups. Additionally, high body mass index and multiple human leukocyte antigen mismatches were significant risk factors for acute rejection (OR: 1.08, 95% CI: 1.01-1.16, P = .033; and OR: 1.20, 95% CI: 1.02-1.40, P = .025, respectively).
  
  
  CONCLUSIONS
  ABO-incompatible kidney transplantation could be a safe option when ABO-compatible donors are not available.
authors: Division of Nephrology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea.
authors: E
authors: E
authors: Shin
authors: Department of Laboratory Medicine, University of Ulsan College of Medicine, Asan Medical Center, Seoul, South Korea.
authors: S W
authors: SW
authors: Kwon
authors: Division of Nephrology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea.
authors: W S
authors: WS
authors: Yang
authors: Division of Nephrology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea.
authors: C
authors: C
authors: Baeck
authors: Division of Nephrology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea.
authors: H
authors: H
authors: Yu
authors: Division of Nephrology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea.
authors: H
authors: H
authors: Cho
authors: Division of Nephrology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea. Electronic address: skpark@amc.seoul.kr.
authors: S K
authors: SK
authors: Park
mesh_terms: D000017:ABO Blood-Group System / Q000276:immunology; D000293:Adolescent; D000328:Adult; D000368:Aged; D001787:Blood Group Incompatibility / Q000276:immunology*; D002648:Child; D005260:Female; D005500:Follow-Up Studies; D006084:Graft Rejection / Q000453:epidemiology / Q000276:immunology*; D006085:Graft Survival / Q000276:immunology*; D006680:HLA Antigens / Q000276:immunology; D006801:Humans; D015994:Incidence; D016030:Kidney Transplantation / Q000009:adverse effects; D019520:Living Donors / Q000600:supply & distribution*; D008297:Male; D008875:Middle Aged; D056910:Republic of Korea / Q000453:epidemiology; D012189:Retrospective Studies; D012307:Risk Factors; D013997:Time Factors
chemical_list: D000017:ABO Blood-Group System; D006680:HLA Antigens