Empagliflozin in Post-Transplantation Diabetes Mellitus (EMPTRA-DM)

May 3, 2019 updated by: Assoc. Prof. Dr. Manfred Hecking, MD PhD, Medical University of Vienna

RELEVANCE:

Up to 50% of patients without previously known disorders of glucose metabolism develop posttransplantation diabetes mellitus (PTDM) after renal transplantation, which is associated with cardiovascular events. Although PTDM is triggered by immunosuppressive agents (calcineurin inhibitors, glucocorticoids), there is consensus against switching patients from potent tacrolimus to the less diabetogenic cyclosporin. Full-blown PTDM must therefore be treated aggressively. Empagliflozin inhibits sodium-glucose cotransporter 2 in the proximal tubule of the kidney and dramatically reduced cardiovascular risk in type 2 diabetics in a recent randomized trial. Especially in diabetics with impaired renal function, empagliflozin was safe, well tolerated, and effective against hyperglycemia and against high blood pressure. Data on SGLT2 inhibition after transplantation are completely lacking. Therefore, the potential antidiabetic of choice is currently withheld from the vulnerable PTDM population.

METHODS, STUDY DESIGN:

Prospective, single-center, non-inferiority study. Inclusion criteria: PTDM (antidiabetic therapy ≥6 months, based on prior 2-h BG ≥200 mg/dL, fasting BG ≥125 mg/dL (2 times) or HbA1c ≥6.5%); stable renal allograft function >6 months; eGFR ≥30 mL/min/1.73m2. Most important exclusion criteria: type 1 and 2 diabetes; insulin demand >40 IU/day; HbA1c >8.5%. After study inclusion, patients will record 4 weeks of 4-times daily BG measurements before undergoing an OGTT, lab work and urine analysis (including ketones, urinary culture). Empagliflozin (10 mg) will be started and insulin discontinued within 3 days. Patients will be asked to perform urinary dipstick tests at home (i.e. ketones), and to continue recording BG. Study visits at 2 and 4 weeks (second OGTT + lab work (as above)). If control over hyperglycemia is insufficient, insulin therapy will be added back, otherwise study patients remain on empagliflozin monotherapy for 1 year. Statistics will include the paired t-test.

Study Overview

Status

Completed

Intervention / Treatment

Detailed Description

The clinical trial plans to include 16 patients with stable renal allograft function, stable immunosuppressive therapy and PTDM, under standard antidiabetic therapy (exogenous insulin <40 IU). The sample size is based on a calculation assuming non-inferiority of empagliflozin monotherapy in comparison to previous insulin therapy, with respect to the primary endpoint: 2-hour blood glucose (2-h BG) during an oral glucose tolerance test (OGTT) immediately prior and 1 month after the start of empagliflozin monotherapy. The null hypothesis will be accepted if the average change in 2-h BG from the first to the second OGTT exceeds 30 mg/dL (empagliflozin will be inferior). Secondary endpoints comprise the average change in insulin secretory capacity and insulin sensitivity, derived from the first to the second OGTT, the average change in HbA1c at 3 months and at 1 year, compared to baseline, changes in body weight, fluid overload (determined by bioimpedance spectroscopy) and blood pressure. Safety endpoints include clinically concerning hyperglycemia after discontinuation of exogenous insulin, ketoacidosis, urinary tract infections and genital infections, worsening of renal function, hypoglycemia, hospitalizations, cardiovascular events and death. The effect of empagliflozin on the renin-angiotensin system is part of an OeNB-funded project in non-transplanted patients and will be included in the analyses of the present study.

Study Type

Interventional

Enrollment (Anticipated)

16

Phase

  • Phase 2

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

      • Vienna, Austria, 1090
        • Department of Internal Medicine III, Division of Nephrology and Dialysis, Medical University of Vienna, Austria

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

16 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Diagnosed PTDM defined as: A transplant patient requiring antidiabetic therapy, based on a previous 2-hour plasma glucose level ≥ 200 mg/dL in the OGTT (75mg glucose), based on previous blood glucose levels ≥ 200 mg/dL during random controls or based on fasting glucose levels ≥ 125 mg/dL twice or HbA1c ≥ 6.5%
  • Stable graft function for more than 6 months post transplantation (eGFR ≥ 30 ml/min/1.73m2)
  • At least 6 months of standard of care antidiabetic therapy (usually basal insulin) for PTDM

Exclusion Criteria:

  • Age< 18 years
  • Patients with prior history of type 1 or type 2 diabetes
  • Pregnancy
  • Severe renal impairment (GFR < 30 mL/min./1.73 m2)
  • Severe blood glucose elevation with the need for therapy with insulin > 40 IU/day or HbA1c >8.5%

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Other: Empagliflozin Arm
Posttransplant Diabetes Mellitus (PTDM) patients after kidney transplantation receiving Empagliflozin 10 MG [Jardiance]
PTDM patients on previous antidiabetic treatment (<40 IU insulin (in some cases plus oral antidiabetics)) receive Empagliflozin, ideally as monotherapy
Other Names:
  • Jardiance

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
OGTT-derived 2-hour blood glucose level
Time Frame: 4 weeks after start of Empagliflozin treatment
Mean change from baseline blood glucose levels of the 2h value after OGTT (75g glucose) after 1 month of empagliflozin monotherapy. Maximum tolerable change from baseline blood glucose levels should not exceed 30 mg/dL on average (100 mg/dL in each individual).
4 weeks after start of Empagliflozin treatment

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

January 15, 2017

Primary Completion (Actual)

June 13, 2017

Study Completion (Actual)

May 31, 2018

Study Registration Dates

First Submitted

April 8, 2017

First Submitted That Met QC Criteria

April 8, 2017

First Posted (Actual)

April 13, 2017

Study Record Updates

Last Update Posted (Actual)

May 7, 2019

Last Update Submitted That Met QC Criteria

May 3, 2019

Last Verified

May 1, 2019

More Information

Terms related to this study

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

No

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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