Autosomal dominant polycystic kidney disease is not a risk factor for post-transplant diabetes mellitus. Matched-pair design multicenter study

BACKGROUND: Post-transplant diabetes mellitus (PTDM) is a relatively common complication of kidney transplantation. The aim of our work was to compare the incidence of PTDM in kidney transplant recipients with and without autosomal dominant polycystic kidney disease (ADPKD) in a matched-pair design study. METHODS: In total, 98 pairs of graft recipients, all of Caucasian origin and who received a kidney from the same cadaveric donor, were included in the study. The following clinical data were collected for statistical analysis: age, body mass index (BMI) before transplant, length and type of dialysis treatment, residual diuresis, and cold and warm graft ischemia time. Diabetes was diagnosed based on American Diabetes Association (ADA) criteria. RESULTS: Incidence of PTDM was 19.4% in the ADPKD group and 18.4% in the non-ADPKD group, with no significant differences between groups. Multivariate logistic regression analysis of the PTDM risk in the ADPKD group including age, gender, BMI, and dialysis time as independent variables indicated that only higher residual diuresis is a significant independent risk factor (OR = 5.64 per every L/24 h, 95% CI = 1.31-24.33, p = 0.017). Similarly, logistic regression analysis adjusted for age and gender in the non-ADPKD group has shown that significant independent risk factors are BMI (OR = 1.30 per every kg/m(2), 95% CI = 1.06-1.59, p = 0.0094), longer dialysis time prior to transplant (OR = 1.036 per each month, 95% CI = 1.004-1.070, p = 0.025), and a history of arterial hypertension (OR = 9.09, 95% CI = 1.20-68.66, p = 0.030). CONCLUSIONS: In this paired analysis, our results suggest that diagnosis of ADPKD does not increase risk of PTDM.