SAT-358 THE INCIDENCE OF MALIGNANCY AND ITS RELATED FACTORS IN PATIENTS UNDERGOING KIDNEY TRANSPLANTATION

Abstract

Renal transplantation is considered as the treatment of choice for patients with ESRD. The underlying causes of death among renal transplant recipients have changed from early immunologic and nonimmunological failure to cardiovascular disease and malignancy. In this study we evaluated the incidence of malignancy and its related factors in renal transplant patients in Razi Hospital of Rasht over a period of 10 years. In this retrospective study, 549 patients who underwent renal transplantation surgery in Razi Hospital between 2008 and 2019 were studied. Demographic and clinical characteristics of patients and other required information were recorded in a checklist. Required patient information was obtained from the case of pre and post-transplant and outpatient follow-up. In this study, it was found that only the patient's age at the time of renal transplantation in recipients of intervention has a confounding and additive role in incidence of malignancy after transplantation (P=0.0001). It was also found that there was no statistically significant relationship between sex of patients, current smoking status, smoking history, family history of malignancy, number of transplants, post-transplant survival, sun exposure, transplant rejection history, patient follow-up, occupational status, the use of daclizumab (Zenapax ATG) induction and incidence of malignancy after kidney transplantation. Estimates of standardized incidence ratio showed that the incidence of malignancy in kidney transplant recipients was 26.9 higher than the incidence rate in Guilan province and 21.7 higher than the incidence of malignancy in the country. The incidence rate of cancer in kidney transplant patients is 26.9 times higher than Guilan province rate (95% CI: 19.7-35.9) and 21.7 times higher than national rate (95% CI: 15.9-28.9). In this study, the incidence rate of cancer is 792 per 100000-person year. In this study, it was found that only the patient's age at the time of kidney transplantation has a confounding and increasing role in the incidence of post-transplant malignancy. It has also been shown that the most common malignancy in these patients is non-melanoma skin malignancy and Kaposi's sarcoma comes in second.