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Study identifier: NCT06268769 Synced from ClinicalTrials.gov · July 28, 2026
● Recruiting

Tacrolimus C:D Ratio Measured in Renal Transplant Recipients Treated With Once-daily Prolonged-release Drugs

Condition: Immunosuppression  ·  Sponsor: Edward Geissler

PhasePhase 4
Planned participants300
Who can joinAll sexes, 18 Years to no upper limit
Healthy volunteersNo

About this study

The goal of this clinical trial is to compare the bioavailability and practicability of two different formulations of tacrolimus in kidney transplant recipients. The main objective is to demonstrate that Envarsus® (test drug) has superior (higher) oral bioavailability compared with Advagraf™ (comparator drug) at 12 weeks after kidney transplantation. The trial also aims to compare the practicability (handling) of the two drugs using a series of pharmacokinetic parameters and to explore the relationship between drug bioavailability and long-term clinical outcomes, with a special focus on dose-dependent adverse reactions, measured until 3 years post-transplantation. The trial incorporates a pharmacokinetic sub-study designed to profile the peak tacrolimus blood concentration up to 6 hours after drug intake on the day of the 12-week study visit.

This description comes directly from the study's public registry record.

Talk to the study team

Edward K. Geissler, PhD  ·  +49 941 944  ·  edward.geissler@ukr.de

Always discuss trial participation with your own doctor first.

Locations (9)

University Hospital Aachen, Department of General, Visceral and Transplant SurgeryAachen, GermanyNot Yet Recruiting
Charité Universitätsmedizin, Department of Nephrology and Medical Intensive CareBerlin, GermanyNot Yet Recruiting
University Hospital Dresden, Division of NephrologyDresden, GermanyRecruiting
University Medical Center Hamburg-Eppendorf, Internal Medicine III (Nephrology, Rheumatology, Endocrinology)Hamburg, GermanyRecruiting
Hannover Medical School, Department of General, Visceral and Transplant SurgeryHanover, GermanyRecruiting
University Hospital Jena, Internal Medicine III, NephrologyJena, GermanyRecruiting
University Medical Center of the Johannes Gutenberg University Mainz, Medical Clinic I. (Nephrology)Mainz, GermanyNot Yet Recruiting
University Hospital Münster, Medical Clinic DMünster, GermanyNot Yet Recruiting
University Hospital Regensburg, Department of NephrologyRegensburg, GermanyRecruiting

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Source record: clinicaltrials.gov/study/NCT06268769