Relation between donor-recipient HLA mismatching and combined malignant tumor after renal transplantation / 器官移植

ABSTRACT

Objective To study the relation between donor-recipient human leukocyte antigen (HLA)mismatching and combined malignant tumors after renal transplantation. Methods Clinical data of 1 021 patients who received renal transplantation from 1993 to 2009 in Department of Urology of Beijing Friendship Hospital of Affiliated Capital University of Medical Sciences over 5 years and had complete HLA typing were analyzed. In the 1 021 patients after renal transplantation,928 cases were non-tumor patients and 93 cases were malignant tumor patients. The mismatching data of 3 locus (HLA-A,B and DR)with a total of 6 antigens of the donors and recipients were collected. The relation between donor-recipient HLA mismatching number and postoperative combined malignant tumors was analyzed. And that between genders was also analyzed. Results Malignant tumors occurred in 9.11% (93/1 021)of the patients. The malignant tumor incidences of patients with HLA mismatch of 0-1,2,3,4,5 and 6 antigens were 14%,13%,14%,6%, 3% and 4%respectively. Patients with HLA over half-matched (0-3 antigens mismatch)had higher incidence of malignant tumors compared with that in patients with HLA less than half matched (4-6 antigens mismatch) (14% vs. 5%;χ2 =24.11,P<0.005). In the malignant tumor patients of0-3 antigens mismatch,12 cases were males and 54 cases were females. In the patients of 4-6 antigens mismatch,12 cases were males and 15 cases were females. The proportion of female patients of 0-3 antigens mismatch was higher than that of male patients (χ2 =5.60,P<0.025). Conclusions For the renal transplant patients,especially female patients, the lower the HLA mismatching number is,the higher the malignant tumor incidence is.