Autosomal Dominant Polycystic Kidney Disease Is a Risk Factor for Posttransplantation Diabetes Mellitus: An Updated Systematic Review and Meta-analysis

Autosomal dominant polycystic kidney disease (ADPKD) is linked with risk for posttransplantation diabetes mellitus (PTDM), but this association has methodologic limitations like diagnostic criteria. The aim of this study was to use contemporary diagnostic criteria for PTDM and explore any risk association for kidney transplant recipients with ADPKD. METHODS. We undertook a retrospective analysis of 1560 nondiabetic kidney transplant recipients between 2007 and 2018 at a single center, of whom 248 (15.9%) had ADPKD. Local/national data were linked for every patient, with manual data capture of PTDM diagnosis by International Consensus Recommendations. We then pooled our data with eligible studies after an updated systematic review and performed a meta-analysis to estimate the pooled effect. RESULTS. Comparing ADPKD versus non-ADPKD kidney transplant recipients, PTDM risk was not significantly different at our center (19.4% versus 14.9%, respectively; P = 0.085). ADPKD patients who developed PTDM were older, borderline heavier, and less likely to be recipients of living kidney donor compared with ADPKD patients who remained free of PTDM. Systematic review of the literature identified 14 eligible studies, of which 8 had a PTDM diagnosis consistent with Consensus recommendations. In the meta-analysis, we observed an increased odds ratio (OR) of kidney transplant recipients with ADPKD developing PTDM regardless of all study inclusion (OR, 1.98; 95% confidence interval, 1.43-2.75) or restricted study inclusion based on robust PTDM diagnostic criteria (OR, 1.81; 95% confidence interval, 1.16-2.83). CONCLUSIONS. ADPKD kidney transplant candidates should be counseled of their increased risk for PTDM, with further work warranted to investigate any underlying metabolic pathophysiology.