PLoS ONE (Jan 2015)

Association between Angiotensin I-Converting Enzyme Insertion/Deletion Polymorphism and Prognosis of Kidney Transplantation: A Meta-Analysis.

  • Zhengkai Huang,
  • Bian Wu,
  • Jun Tao,
  • Zhijian Han,
  • Xiao Yang,
  • Lei Zhang,
  • Xuzhong Liu,
  • Zijie Wang,
  • Ruoyun Tan,
  • Min Gu,
  • Changjun Yin

DOI
https://doi.org/10.1371/journal.pone.0127320
Journal volume & issue
Vol. 10, no. 5
p. e0127320

Abstract

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PurposeAngiotensin I-converting enzyme (ACE) is crucial in the renin-angiotensin-aldosterone system. ACE insertion/deletion (I/D) polymorphism is a common genetic variation of this gene and is associated with several disease phenotypes. However, the results of published studies on the influence of this polymorphism on renal transplantation are inconsistent. Therefore, a meta-analysis was performed to evaluate the association between ACE I/D polymorphism and prognosis of kidney transplantation.MethodsA meta-analysis was performed based on 21 case-control studies from 12 publications (1497 cases and 2029 controls) and 10 studies with quantitative values from 5 publications (814 patients). Pooled odds ratios (ORs) and weighted mean differences (WMDs) with their corresponding 95% confidence intervals (CIs) were used to estimate associations.ResultsACE I/D polymorphism was found to be associated with acute rejection (AR) in genotypes DD+ID versus II (OR = 1.62, 95% CI = 1.14-2.29) and with serum creatinine concentration after renal transplantation in genotypes DD versus ID (WMD = 13.12, 95% CI = 8.09-18.16). Stratified analysis revealed that recipients transplanted within a year had higher serum creatinine concentrations in the DD versus ID model. No significant association was found between hypertension and ACE I/D polymorphism.ConclusionACE I/D polymorphism is associated with AR and allograft function after kidney transplantation.