Evidence map›Paper›PMID 30176064›Full record

ArticleBritish journal of clinical pharmacology2018

Therapeutic drug monitoring of tacrolimus and mycophenolic acid in outpatient renal transplant recipients using a volumetric dried blood spot sampling device.

Tom C Zwart, Sumit R M Gokoel, Paul J M van der Boog, Johan W de Fijter, Dina M Kweekel, Jesse J Swen, Henk-Jan Guchelaar, Dirk Jan A R Moes

Abstract read
In one paragraph

Article in British journal of clinical pharmacology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 34 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
34citing papers in PubMed, 2 pooled it
–field-weighted citation impact
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

34 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Pooled it
  2. Pooled it
  3. Trial
  4. Low Tacrolimus CClinical pharmacokinetics · 2026
    Article
  5. Post-lung transplant surveillance in 2026: current practice, variability, and the need for standardization.Transplant international : official journal of the European Society for Organ Transplantation · 2026
    Review
  6. Evaluation of hematocrit-adjusted conversion strategies for mycophenolic acid and tacrolimus monitoring using volumetric absorptive microsampling in lung and renal transplant recipients.Journal of pharmacy & pharmaceutical sciences : a publication of the Canadian Society for Pharmaceutical Sciences, Societe canadienne des sciences pharmaceutiques · 2026
    Article
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  19. Tacrolimus Exposure Before and After a Switch From Twice-Daily Immediate-Release to Once-Daily Prolonged Release Tacrolimus: The ENVARSWITCH Study.Transplant international : official journal of the European Society for Organ Transplantation · 2023
    Article
  20. Review
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

8 authors.

Tom C ZwartDepartment of Clinical Pharmacy and Toxicology, Leiden University Medical Center, Albinusdreef 2, 2333, ZA, Leiden, the Netherlands.ORCID 0000-0003-3692-0901
Sumit R M GokoelDepartment of Nephrology, Leiden University Medical Center, Albinusdreef 2, 2333, ZA, Leiden, the Netherlands.
Paul J M van der BoogDepartment of Nephrology, Leiden University Medical Center, Albinusdreef 2, 2333, ZA, Leiden, the Netherlands.
Johan W de FijterDepartment of Nephrology, Leiden University Medical Center, Albinusdreef 2, 2333, ZA, Leiden, the Netherlands.
Dina M KweekelDepartment of Clinical Pharmacy and Toxicology, Leiden University Medical Center, Albinusdreef 2, 2333, ZA, Leiden, the Netherlands.
Jesse J SwenDepartment of Clinical Pharmacy and Toxicology, Leiden University Medical Center, Albinusdreef 2, 2333, ZA, Leiden, the Netherlands.
Henk-Jan GuchelaarDepartment of Clinical Pharmacy and Toxicology, Leiden University Medical Center, Albinusdreef 2, 2333, ZA, Leiden, the Netherlands.
Dirk Jan A R MoesDepartment of Clinical Pharmacy and Toxicology, Leiden University Medical Center, Albinusdreef 2, 2333, ZA, Leiden, the Netherlands.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

aimsTacrolimus and mycophenolic acid dosing after renal transplantation is individualized through therapeutic drug monitoring (TDM). Home-based dried blood spot (DBS) sampling has the potential to replace conventional TDM sampling at the clinic. A liquid chromatography-tandem mass spectrometry (LC-MS/MS) assay was developed to quantify tacrolimus and mycophenolic acid in DBS and clinically validated for abbreviated area under the concentration-time curve (AUC) monitoring using an innovative volumetric DBS sampling device.

methodsClinical validation was performed by direct comparison of paired DBS and whole blood (WB) (tacrolimus) and plasma (mycophenolic acid) concentrations and AUCs. Agreement was evaluated using Passing-Bablok regression, Bland-Altman analysis and DBS-to-WB predictive performance. TDM dosing recommendations based on both methods were compared to assess clinical impact.

resultsPaired tacrolimus (n = 200) and mycophenolic acid (n = 192) DBS and WB samples were collected from 65 kidney(-pancreas) transplant recipients. Differences for tacrolimus and mycophenolic acid were within ±20% for 84.5% and 76.6% of concentrations and 90.5% and 90.7% of AUCs, respectively. Tacrolimus and mycophenolic acid dosing recommendation differences occurred on 44.4% and 4.7% of occasions. Tacrolimus DBS dosing recommendations were 0.35 ± 0.14 mg higher than for WB and 8 ± 3% of the initial dose. Mycophenolic acid DBS dosing recommendations were 23.3 ± 31.9 mg lower than for plasma and 2 ± 3.5% of the initial dose.

conclusionsTacrolimus and mycophenolic acid TDM for outpatient renal transplant recipients, based on abbreviated AUC collected with a DBS sampling device, is comparable to conventional TDM based on WB sampling. Patient training and guidance on good blood-spotting practices is essential to ensure method feasibility.

Indexed as

Kidney TransplantationAdultAgedArea Under CurveDried Blood Spot TestingDrug MonitoringFemaleHumansMaleMiddle AgedMycophenolic AcidTacrolimusMycophenolic AcidTacrolimusdried blood spotmycophenolic acidrenal transplantationtacrolimustherapeutic drug monitoring

Identifiers

PMID30176064
PMCPMC6256056

What OpenQuestion holds

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Registered trials

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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.