Clinical Research Directory

Empagliflozin on Residual Kidney Function in Incident Peritoneal Dialysis Patients

Empagliflozin, a new class of diabetes medication, has demonstrated a reduction in renal function decline among patients with chronic kidney disease, regardless of their diabetes status. However, all previous studies excluded dialysis patients. Patients starting dialysis may still produce a certain amount of urine. Importantly, patients with better preserved residual kidney function tend to have better control of blood pressure and volume status, improved nutrition status, higher quality of life and reduced mortality rate. The purpose of this study is to learn about the safety of empagliflozin in patients on peritoneal dialysis, in preparation for a future large clinical trial. Participants who newly initiate peritoneal dialysis will be randomly allocated to either empagliflozin on top of standard of care, or standard of care alone. Over a follow-up period of six months, the investigators will collect information on urine volume, blood pressure and glucose control. Safety, tolerability and drug compliance of empagliflozin will also be evaluated. If empagliflozin is found to be safe and well tolerated in patients on peritoneal dialysis, further large-scale randomized controlled trial may be conducted to evaluate its impact on residual kidney function and other relevant clinical outcomes.

meChANisms and sAfety of SGLT2 Inhibition in peRitoneal dialYsis

The primary aim of this study is to determine the safety and mechanisms of SGLT2 inhibition in individuals on peritoneal dialysis (PD) with residual kidney function (RKF).

International (Pediatric) Peritoneal Biobank

Within few years the peritoneal membrane of adult peritoneal dialysis (PD) patients undergoes substantial morphological transformation, including progressive fibrosis, vasculopathy and neoangiogenesis. Ultrafiltration capacity steadily declines and ultimately results in PD failure. In children, peritoneal biopsies demonstrating PD associated alterations have not yet been obtained. They, however, should be particularly informative, since secondary tissue and vascular pathology related to ageing or diabetes is absent. An international, prospective peritoneal membrane biopsy study in children on PD will therefore be performed. Biopsies will be obtained at time of PD catheter insertion, on occasion of intercurrent abdominal surgery (e.g. hernia repair, catheter exchange) and at time of renal transplantation. Quantitative histomorphometry and tissue protein expression analyses will be correlated with time integrated PD treatment modalities and functional characteristics as well as inflammatory and cardiovascular comorbidity surrogate parameter. Blood will be obtained during clinical routine sampling. Biopsies will be obtained during clinically indicated operations, without substantially increasing operation time and associated surgical risks. The detailed histomorphometry of the PD membrane will give additional information, potentially impacting on the individual PD regime. 3/2018: The analyses of the pediatric PD biopsy demonstrated early and major transformation of the peritoneal membrane with neutral pH low GDP fluids, and significant vasculopathy already in children with CKD stage 5, further progressing with PD. The underlying mechanisms are partly understood, only. In view of these major findings and the numerous open questions, collection of biosamples will be continued in children and also in adult PD patients. The following questions will be addressed: Molecular counterparts of peritoneal semi-permeability, solute and water transport (beyond AQP1), pathomechanisms and molecular and functional impact of peritoneal transformation with low and high GDP fluids, and the respective pathomechanisms and molecular and functional impact of vascular disease in CKD and with different PD fluids. The impact of renal transplantation following PD will be assessed in a subgroup of patients with tenckhoff catheter removal several weeks after transplantation and a functioning graft.

Safety and Efficacy of Apixaban Versus Warfarin in Peritoneal Dialysis Patients With Non Valvular Atrial Fibrillation: a Prospective, Randomised, Open-label, Blinded End-point Trial (APIDP2)

Introduction: Several randomised controlled trials have demonstrated that novel oral anticoagulants (NOACs) are safer compared to vitamin K antagonists for the management of non valvular atrial fibrillation (NVAF) to prevent thromboembolic events, in the general population. There is a growing interest in the use of apixaban in patients with End-Stage Renal-Disease (ESRD) undergoing peritoneal dialysis but there is a lack of randomised data in this population. Design: APIDP2 is a prospective parallel randomised, open-label, blinded endpoint trial. Participants: Patients with ESRD undergoing chronic Peritoneal Dialysis who have NVAF. Setting: A total of 178 participants will be recruited from 20 French peritoneal dialysis centers. Intervention: Eligible patients will be randomly assigned to receive either apixaban at a reduced dose 2.5mg twice daily (dose determined with the previous pharmacokinetic study APIDP1 of apixaban in PD patients) or dose-adjusted to INR target \[2-3\] coumadin therapy. Anticoagulation to prevent thromboembolic events will be initiated or changed according to the randomisation for a duration of one year. The primary outcome is a major or clinically relevant non-major bleeding from randomisation up to Month 12, assessed according to ISTH score. Secondary outcomes encompass an efficacy composite criterion combining stroke or TIA, cardiovascular death, and thrombosis including myocardial infarction cumulated at 12 months. Bleeding events will be also classified according to GUSTO and TIMI criteria and pharmacodynamics outcomes will evaluate the time within the INR target range of \[2-3\] in the warfarin arm over one year, and AntiXa apixaban activity in case of bleeding events and at 1, 6, and 12 months of follow-up in the apixaban arm. Primary outcome analysis: To demonstrate that apixaban is safer than warfarin at one year, assuming two interim analyses after 60 and 118 patients, a bilateral alpha risk of 5% and a power of 80%, 178 patients are needed in this randomised trial (effect size found in the ARISTOTLE study among patients with CrCl \[25-30\]ml/min), i.e. 89 patients per group.

Dapagliflozin Delays the Loss of Renal Function in Peritoneal Dialysis Patients

This study aims to explore the role of dagliflozin in preserving the residual renal function(RRF) in peritoneal dialysis (PD) patients.

Incremental PD With Single Icodextrin Exchange

Objectives: To investigate the efficacy and safety of single daily icodextrin exchange for initiation of incremental peritoneal dialysis (PD). Subjects: Seventy-two incident PD patients. Methods: A single-center randomized controlled trial. Primary outcome: Change in residual kidney function in 48 weeks after recruitment.