Evidence map›Paper›PMID 34341448›Full record

ArticleScientific reports2021

Increased renal function decline in fast metabolizers using extended-release tacrolimus after kidney transplantation.

Gerold Thölking, Brigitte Filensky, Ulrich Jehn, Katharina Schütte-Nütgen, Raphael Koch, Christine Kurschat, Hermann Pavenstädt, Barbara Suwelack, Stefan Reuter, Dirk Kuypers

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed
2.5field-weighted citation impact, top 11% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

13 citing papers in PubMed, 17 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Impact of tacrolimus peak concentration on kidney graft outcomes.Transplant international : official journal of the European Society for Organ Transplantation · 2026
    Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Tacrolimus-why pharmacokinetics matter in the clinic.Frontiers in transplantation · 2023
    Review
  10. The Tacrolimus Concentration/Dose Ratio Does Not Predict Early Complications After Kidney Transplantation.Transplant international : official journal of the European Society for Organ Transplantation · 2023
    Article
  11. Article
  12. Article
  13. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

10 authors at 4 institutions in 2 countries.

Gerold ThölkingDepartment of Internal Medicine and Nephrology, University Hospital of Münster Marienhospital Steinfurt, 48565, Steinfurt, Germany. Gerold.Thoelking@ukmuenster.de.
Brigitte FilenskyDepartment of Internal Medicine and Nephrology, University Hospital of Münster Marienhospital Steinfurt, 48565, Steinfurt, Germany.
Ulrich JehnDivision of General Internal Medicine, Nephrology and Rheumatology, Department of Medicine D, University Hospital of Münster, Münster, Germany.
Katharina Schütte-NütgenDivision of General Internal Medicine, Nephrology and Rheumatology, Department of Medicine D, University Hospital of Münster, Münster, Germany.
Raphael KochInstitute of Biostatistics and Clinical Research, University of Münster, Münster, Germany.
Christine KurschatDepartment II of Internal Medicine and Center for Molecular Medicine Cologne, Faculty of Medicine, University Hospital Cologne, Cologne, Germany.
Hermann PavenstädtDivision of General Internal Medicine, Nephrology and Rheumatology, Department of Medicine D, University Hospital of Münster, Münster, Germany.
Barbara SuwelackDivision of General Internal Medicine, Nephrology and Rheumatology, Department of Medicine D, University Hospital of Münster, Münster, Germany.
Stefan Reuter *Division of General Internal Medicine, Nephrology and Rheumatology, Department of Medicine D, University Hospital of Münster, Münster, Germany.
Dirk Kuypers *Department of Nephrology and Renal Transplantation, University Hospitals Leuven, Leuven, Belgium.
University Hospital Münster · DEKU Leuven · BEUniversity Hospital Cologne · DEUniversity of Münster · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Fast metabolism of immediate-release tacrolimus (IR-Tac) is associated with decreased kidney function after renal transplantation (RTx) compared to slow metabolizers. We hypothesized, by analogy, that fast metabolism of extended-release tacrolimus (ER-Tac) is associated with worse renal function. We analyzed data from patients who underwent RTx at three different transplant centers between 2007 and 2016 and received an initial immunosuppressive regimen with ER-Tac, mycophenolate, and a corticosteroid. Three months after RTx, a Tac concentration to dose ratio (C/D ratio) < 1.0 ng/ml · 1/mL defined fast ER-Tac metabolism and ≥ 1.0 ng/ml · 1/mL slow metabolism. Renal function (estimated glomerular filtration rate, eGFR), first acute rejection (AR), conversion from ER-Tac, graft and patient survival were observed up to 60-months. 610 RTx patients were divided into 192 fast and 418 slow ER-Tac metabolizers. Fast metabolizers showed a decreased eGFR at all time points compared to slow metabolizers. The fast metabolizer group included more patients who were switched from ER-Tac (p < 0.001). First AR occurred more frequently (p = 0.008) in fast metabolizers, while graft and patient survival rates did not differ between groups (p = 0.529 and p = 0.366, respectively). Calculation of the ER-Tac C/D ratio early after RTx may facilitate individualization of immunosuppression and help identify patients at risk for an unfavorable outcome.

Indexed as

Delayed-Action PreparationsGlomerular Filtration RateGraft RejectionImmunosuppressive AgentsKidney TransplantationTacrolimusAdultAgedFemaleGraft SurvivalHumansKidneyMaleMiddle AgedRetrospective StudiesDelayed-Action PreparationsImmunosuppressive AgentsTacrolimus

Identifiers

PMID34341448
PMCPMC8329201
OpenAlexW3192347947

What OpenQuestion holds

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LicenceCC BY
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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.