Study of Eplets Matching in Kidney Transplantation

Summary

Participation Requirements

Description

This study is a retrospective cohort study. The investigators design to analyze the HLA high-resolution typing data of kidney transplant recipients from 2014 to the end of 2017 with HLA Matchmaker for eplets mismatching number, and analyze the incidence of dnDSA and AMR after kidney transplant recip...

This study is a retrospective cohort study. The investigators design to analyze the HLA high-resolution typing data of kidney transplant recipients from 2014 to the end of 2017 with HLA Matchmaker for eplets mismatching number, and analyze the incidence of dnDSA and AMR after kidney transplant recipients with different eplets mismatching number post transplant, and elucidate the important role of tissue configuration patterns based on HLA eplets matching in long-term graft survival. The study contents including the followings: Collecting the HLA high resolution typing data The high-resolution HLA typing data of the recipients were analyzed with the HLA Matchmaker software for Eplets mismatching numbers, and the experiment groups were conducted according to the results of Eplets mismatching numbers. Based on the normal distribution characteristics of the Eplets mismatching numbers and the references, the study is divided into the following four groups: group 1, with the Eplets mismatching numbers <5; 2. Group 2, with Eplets mismatching numbers 5-19; Group 3, with Eplets mismatching numbers 20-35; Group 4: with Eplets mismatching numbers greater than or equal to 36. Collecting Clinical follow-up data of patients after kidney transplantation. It mainly includes renal function, DSA level, and pathological diagnosis data of diseases and venereal diseases. 1) sCr? 1 month, 6 months, 1 year, 2 years after surgery... 2) Preoperative PRA-: 1 month, 6 months, 1 year, 2 years after surgery... 3) Preoperative PRA+:2 weeks after surgery, January, march, June, September, 1 year, 2 years... 4) DSA was classified according to the type of antibody: DSA of HLA A site, DSA of HLA B site, DSA of HLA C site, DSA of HLA DR site, DSA of HLA DQ site; 5) According to DSA MFI value classification?MFI<3000, 3000?MFI<6000, 6000?MFI<10000,MFI?10000; 6) AMR?Pathological biopsy data collection (according to Banff 2013 standard diagnosis) 3. Statistical analysis SPSS17.0 Chinese version was used for descriptive analysis of the data. The continuous variable is represented by the mean plus or minus the standard deviation. The chi-square test analyzed the relationship between the Eplets mismatching numbers and the generation of dnDSA, as well as the differences in the Eplets mismatching numbers between the DSA positive group and the DSA negative group, and the differences in Eplets mismatching numbers between the AMR group and the non-AMR group. Kaplan-meier survival curve was used to analyze the differences in long-term graft survival among groups with different Eplets mismatching numbers. P<0.05 was considered statistically significant.

Tracking Information