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Chinese Journal of Transplantation(Electronic Edition) ›› 2020, Vol. 14 ›› Issue (05): 273-278. doi: 10.3877/cma.j.issn.1674-3903.2020.05.001

Special Issue:

• Original Article • Previous Articles     Next Articles

Risk evaluation model for kidney transplant rejection using peripheral blood gene expression profiling

Kiat Shenq Lim1, Huimin An1, Kun Shao1, Quan Zhou1, Xianghui Wang1, Peijun Zhou1,()   

  1. 1. Transplant Center, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200025, China
  • Received:2020-06-13 Online:2020-10-20 Published:2020-10-20
  • Contact: Peijun Zhou

Abstract:

Objective

To develop and validate a risk evaluation model for kidney transplant rejection using bioinformatics methods.

Methods

This study conducted a data-mining and integrated analysis of blood-based gene expression profiling of kidney transplant recipients with rejection from the GEO database. Gene selection was performed progressively by LIMMA analysis and LASSO regression, followed by development of a risk evaluation model for kidney transplant rejection using the selected genes through Logistic regression. The utility of the proposed model was assessed by the ROC, calibration, and decision curve analyses. A P<0.05 was considered statistically significant.

Results

A 15-gene panel was selected according to its ability to evaluate the risk of rejection. The 15-gene panel was then used to establish a risk evaluation model and generate a risk of rejection score(RRS) by the gene expression values. RRS ranged from 0 to 100, when the cut-off of RSS was set to 35.55, the AUC, overall accuracy, sensitivity, specificity, and positive and negative predictive value of this model reached 0.836 (0.812-0.859), 76.3%, 73.0%, 78.0%, 62.9% and 84.9% respectively. The decision curve analysis demonstrated significant advantage of clinical benefit using this model.

Conclusions

RRS generated by this model is capable of quantitatively evaluating the risk of rejection in a non-invasive manner. However, this model requires additional clinical trial study for further validation.

Key words: Kidney transplantation, Bioinformatics, Graft rejection, Risk evaluation model, Peripheral blood, Gene expression profiling

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