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RecruitingNCT05744635LTAUpdated Aug 22, 2024

Assessment of the Pharmacokinetic Profile of Tacrolimus Medications and Their Relation to Effectiveness and Safety in Liver Transplant Patients

An observational study in Liver Failure, sponsored by Chiesi Hungary Ltd.. Recruiting at 2 sites in 2 countries. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2024-08-22.

Sponsored by Chiesi Hungary Ltd. (part of Chiesi Farmaceutici S.p.A.) · Observational

From the registry’s dates

  • Primary completion was expected by Mar 2026, 8 months ago, but the record still lists the study as recruiting.
  • Started May 2023; still recruiting 3 years 6 months later.
Study type
Observational
Model
Cohort
Time perspective
Prospective
Enrollment
110
Ages
18 Years and older
Sex
All
01

Study summary

The goal of this observational study is oo compare the pharmacokinetic parameters of different tacrolimus containing medications in liver transplant patients. The main question[s] it aims to answer are:

  • Differences in pharmacokinetic parameters of tacrolimus containing medicinal products (TL, TDD and their ratio - C/D)
  • Changes in liver function parameters compared to baseline.
  • Change in the estimated glomerular filtration rate (eGFR) compared to baseline.
  • To assess the possible relation of liver function parameters and eGFR to C/D (blood concentration and daily dosage)
  • Incidence of acute graft rejection during the study
  • Incidence of BK and cytomegalovirus (CMV) infection during the study
  • To assess the intraindividual variability of the TL, TDD and the ratios of these parameters (C/D)
  • To assess the patient-adherence of therapy based on the BAASIS questionnaire, and prescription filled by individual patients, based on electronic health-care record.

Participants will not have to undergo any additional clinical visits or tests except which are required in routine clinical care

Read the detailed description

The primary aim of the study is to assess tolerability of LCPT and graft function within the 24-month observational period. Other objectives include the assessment of the intraindividual variability of the TL and TDD, the incidence of BK and cytomegalovirus infections, the incidence of graft insufficiency and acute and chronic graft rejection. There are few real-life studies available on maintenance treatment regimens in liver transplant patients throughout Europe, and these only focus on the healthcare resources' consumption. There is a lack of data describing the effectiveness of different drugs and their combinations in early maintenance immunosuppression in the real-life setting. Even less data is available of ISU (immunosuppression) drugs combinations' metabolism and its relation to effectiveness and safety, measured in liver transplant patients.

Given the above considerations we planned this non-interventional study (NIS) to assess pharmacokinetic parameters of LCPT and other tacrolimus containing medications and their relation to efficacy and tolerability in hepatic allograft recipients in a real-life setting.

02

Conditions studied

  • Liver Failure

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Keywords

  • Liver transplantation
  • Immunosuppression
  • Tacrolimus
03

In context

Liver Failure

190 studies on the registry are indexed under Liver Failure; 33 are open to participants now.

This study's planned enrollment of 110 is below the median of 129 across 66 observational studies indexed under Liver Failure.

Browse Liver Failure studies →

Lead sponsor

Chiesi Hungary Ltd. is the lead sponsor of 4 studies on the registry; 3 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Sampling method
Non-probability sample

Study population

Adult, liver (or concomittant liver-renal) transplant patients, receiving tacrolimus containing medications.

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  1. Patients ≥ 18 years of age
  2. Patients after liver- or simultaneous liver and kidney transplantation
  3. Having received a tacrolimus containing therapeutic regimen at least for four weeks (induction therapy), and TL is within 5-20 ng/ml before inclusion
  4. Patients signed an form for use of their pseudonymised clinical data within the present non-interventional trial.

Exclusion criteria

Exclusion Criteria:

  1. Participation in any clinical trial, 30 days prior to inclusion
  2. The patients received liver allograft more than 6 months before inclusion
  3. Hospitalisation due to infection, acute rejection, or graft disfunction 2 weeks prior to enrolment
  4. Chronic graft insufficiency in the patient's history
  5. Use of medications 2 weeks prior to enrolment, or the need for continuous use of medications that are known to significantly affect the pharmacokinetics of tacrolimus containing medications (as inducers: rifampin, carbamazepine, phenobarbital, and phenytoin, or CYP3A4 inhibitors: erythromycin, ketoconazole, clarithromycin, and verapamil containing medication)
  6. Presence of the following comorbidities:

    1. Diseases affecting adherence to therapy (Chronic neurologic conditions, Psychiatric diseases)
    2. Diseases affecting drug absorption and metabolism (Inflammatory bowel disease, Chronic inflammatory diseases of bile ducts, Presence of ascites due to any disease)
  7. Patients on waiting list for re-transplantation
Terms in these criteria, in plain language(3)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Immunosuppression

A weakened immune system. It can come from an illness, such as HIV or some blood cancers, or from medicines that turn the immune system down, for example after an organ transplant or for an autoimmune disease; steroids at higher doses count.

Read whether the line is about a condition or about medicines, and which medicines and doses it means.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

CYP3A (CYP3A4) inhibitors and inducers

CYP3A is a group of enzymes, mainly CYP3A4, in the liver and gut that break down many medicines. Some medicines, supplements and foods (grapefruit, St John’s wort) slow them down or speed them up, which changes how much of a study drug stays in the body.

Studies list them so they can be avoided or switched; bring a list of everything you take, including supplements.

05

Study design

Observational model
Cohort
Time perspective
Prospective
Enrollment
110 participants (estimated)
Patient registry
No

Groups and cohorts

  • Liver transplant patients, receiving tacrolimus containing immunosuppression

    1. Patients ≥ 18 years of age 2. Patients after liver- or simultaneous liver and kidney transplantation 3. Having received a tacrolimus containing immunosuppressant therapeutic regimen at least for four weeks (induction therapy), and TL is within 5-20 ng/ml before inclusion. Possible medications are the following (dosages and administration according to local (European) SmPC * Envarsus prolonged release tablet * Adport hard capsule * Advagraf prolonged-release hard capsule * Modigraf granule for oral suspension * Prograf hard capsule * Tacforius hard capsule

    Drug: Tacrolimus

Interventions

  • Tacrolimus received as part of routine clinical care

06

What researchers measure

Primary outcomes

  1. Pharmacokinetic profile TL

    To compare the trough level (TL) of different tacrolimus containing medications to Envarsus at each visit

    Time frame: 12 months

  2. Pharmacokinetic profile TDD

    To compare the total daily dose (TDD) of different tacrolimus containing medications to Envarsus at each visit

    Time frame: 12 months

  3. Pharmacokinetic profile C/D

    To compare the ration of TL and TDD (C/D) of different tacrolimus containing medications to Envarsus at each visit

    Time frame: 12 months

Secondary outcomes

  1. Liver function GGT

    Changes in Gamma glutamine transferase (GGT) levels compared to baseline.

    Time frame: 12 months

  2. Liver function AP

    Changes in Alcalic phosphatase (AP) levels compared to baseline.

    Time frame: 12 months

  3. Liver function GOT

    Changes in Glutamyl oxaloacetic transaminase (GOT) levels compared to baseline.

    Time frame: 12 months

  4. Liver function GPT

    Changes in Glutamyl pyruvic transaminase (GPT) levels compared to baseline.

    Time frame: 12 months

  5. Renal function

    Change in the estimated glomerular filtration rate (eGFR) compared to baseline.

    Time frame: 12 months

  6. Kinetics and function

    To assess the possible relation of liver function parameters and eGFR to C/D (blood concentration and daily dosage)

    Time frame: 12 months

  7. Rejection

    Incidence of acute graft rejection during the study

    Time frame: 12 months

  8. Virus infection

    Incidence of BK and cytomegalovirus (CMV) infection during the study

    Time frame: 12 months

  9. Variability

    To assess the intraindividual variability of the TL, TDD and the ratios of these parameters (C/D)

    Time frame: 12 months

  10. Adherence BAASIS

    To assess the patient-adherence of therapy based on the BAASIS questionnaire

    Time frame: 12 months

  11. Adherence prescriptions

    To assess the patient-adherence of therapy based on the prescription filled by individual patients, based on electronic health-care record.

    Time frame: 12 months

07

Study locations

2 of 2 sites recruiting
  • Semmelweis University, Department of Surgery, Transplantation and Gastroenterology
    Budapest, 1085, Hungary
    Recruiting
    • László Piros, MD, PhD · Contactdrpiroslaszlo@gmail.com · +36300905499
    • Tamás Benkő, MD, PhD · Sub investigator
    • Anita Haboub Sandil, MD · Sub investigator
  • University Medical Center Ljubljana, Division of Internal Medicine, Department of Gastroenterology
    Ljubljana, 1000, Slovenia
    Recruiting
    • Marija Ribnikar, MD, PhD · Contact
    • Katja Novak, MD · Sub investigator
    • Jan Drnovsek, MD · Sub investigator
    • Anja Rihtarsic, MD · Sub investigator
    • Marjana Turk Jerovsek, MD · Sub investigator
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Started May 2023 (actual). Primary completion is estimated for Mar 2026, 33 months after the start.

Of 25 observational studies under Liver Failure, half reached primary completion within 65 months of starting (the median), counting those still running; a quarter within 29 and three quarters within 127. This study's planned 33 months is below that.

How these figures are worked out, and which studies are left out of them.

Registered
Jan 30, 2023
First posted
Feb 27, 2023
StartActual
May 10, 2023
Primary completionEst.
Mar 1, 2026
CompletionEst.
Jun 1, 2026
Last update
Aug 22, 2024
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Aug 22, 2024, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT05744635
Responsible party
Sponsor
First posted
Feb 27, 2023
Start date
May 10, 2023
Primary completion
Mar 1, 2026 (estimated)
Completion
Jun 1, 2026 (estimated)
Last update
Aug 22, 2024

Study contacts

Ákos Szeredi, MD
Contact
a.szeredi@chiesi.com
+36707772232
László Piros, MD, PhD
principal investigator · Semmelweis University, Department of Surgery, Transplantation and Gastroenterology, Budapest, Hungary

Oversight

Data monitoring committee
No
FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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