Evidence map›Paper›PMID 42065853›Full record

Observational studyClinical pharmacokinetics2026

Impacts of Uremic Toxins on the Population Pharmacokinetics of Total Mycophenolic Acid and its Glucuronide Metabolite in Adult Kidney Transplant Recipients.

Ala'a R Al-Dajani, Yan Rong, Jinal Adhiya, Puja Dhungana, Patrick Mayo, Penny Colbourne, Sita Gourishankar, Tony K L Kiang

Abstract readObservational Study
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In one paragraph

Observational study in Clinical pharmacokinetics, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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0citing papers in PubMed
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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

0 citing papers in PubMed.

No citing paper in PubMed yet.

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.

Ala'a R Al-DajaniFaculty of Pharmacy and Pharmaceutical Sciences, Katz Group Centre for Pharmacy and Health Research, University of Alberta, 11361-87 Avenue, Edmonton, AB, T6G 2E1, Canada.ORCID 0009-0009-1938-0801
Yan RongFaculty of Pharmacy and Pharmaceutical Sciences, Katz Group Centre for Pharmacy and Health Research, University of Alberta, 11361-87 Avenue, Edmonton, AB, T6G 2E1, Canada.ORCID 0000-0002-5252-6958
Jinal AdhiyaFaculty of Pharmacy and Pharmaceutical Sciences, Katz Group Centre for Pharmacy and Health Research, University of Alberta, 11361-87 Avenue, Edmonton, AB, T6G 2E1, Canada.ORCID 0009-0000-0251-6375
Puja DhunganaFaculty of Pharmacy and Pharmaceutical Sciences, Katz Group Centre for Pharmacy and Health Research, University of Alberta, 11361-87 Avenue, Edmonton, AB, T6G 2E1, Canada.ORCID 0009-0000-5228-0030
Patrick MayoFaculty of Pharmacy and Pharmaceutical Sciences, Katz Group Centre for Pharmacy and Health Research, University of Alberta, 11361-87 Avenue, Edmonton, AB, T6G 2E1, Canada.ORCID 0000-0001-6350-5258
Penny ColbourneAlberta Precision Laboratories (Alberta Health Services), University of Alberta Hospital, Edmonton, AB, Canada.ORCID 0000-0001-7362-4760
Sita GourishankarKidney Transplant Services, Faculty of Medicine and Dentistry, University of Alberta Hospital, University of Alberta, Edmonton, AB, Canada.ORCID 0000-0002-6442-895X
Tony K L KiangFaculty of Pharmacy and Pharmaceutical Sciences, Katz Group Centre for Pharmacy and Health Research, University of Alberta, 11361-87 Avenue, Edmonton, AB, T6G 2E1, Canada. tkiang@ualberta.ca.ORCID 0000-0003-4548-9746

Funding

Kidney Foundation of Canada #856581)Kidney Foundation of Canada Kidney Foundation of Canada (Grant #973281
6 · The paper itself

Abstract

BACKGROUND AND

objectiveMycophenolic acid (MPA) exhibits considerable inter-individual variability in drug exposure, which can result in acute graft rejection as well as hematological or infectious adverse effects. Evidence from our group and others indicates that certain uremic toxins may contribute to this variability through pharmacokinetic (PK) interactions. This study aimed to develop a novel population PK (popPK) model to investigate how conjugated metabolites of p-cresol and indole (i.e., toxicokinetically important uremic toxins) affect total MPA PK, and to conduct model-based simulations to identify potentially relevant dosing recommendations.

methodsA prospective observational study enrolled adult kidney transplant recipients on steady-state oral mycophenolate mofetil (MMF; prodrug of MPA) with tacrolimus (±prednisone). Total plasma concentrations of p-cresol sulfate (pCS), p-cresol glucuronide (pCG), indoxyl sulfate (IxS), indoxyl glucuronide (IxG), MPA, and its major glucuronide metabolite (MPAG) were quantified with our validated liquid chromatography tandem-mass spectrometry assays. PopPK modelling was conducted with stochastic approximation expectation-maximization, and Monte-Carlo simulation was used to assess the potential impacts of significant covariates on MPA exposure.

resultsForty-one participants contributed 283 samples across three early post-transplant periods (~1, ~3, and ~6 months). The final popPK model was described by first-order absorption (K

conclusionTo our knowledge, this is the first popPK model to mechanistically characterize PK interactions between uremic toxins and total MPA in kidney transplant recipients. Our findings indicate that each toxin has distinct interaction effects, with pCS emerging as potentially relevant. Additional investigations are required to elucidate the clinical impacts of the identified toxin-MPA PK interactions in this population.

Indexed as

GlucuronidesImmunosuppressive AgentsKidney TransplantationModels, BiologicalMycophenolic AcidUremic ToxinsAdultCresolsFemaleHumansIndolesMaleMiddle AgedMonte Carlo MethodProspective StudiesSulfuric Acid Esters4-cresol sulfateCresolsGlucuronidesImmunosuppressive AgentsIndolesMycophenolic AcidSulfuric Acid EstersTacrolimusUremic Toxins

Identifiers

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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.