Evidence map›Paper›PMID 23305195›Full record

Trial reportBritish journal of clinical pharmacology2013

A published pharmacogenetic algorithm was poorly predictive of tacrolimus clearance in an independent cohort of renal transplant recipients.

Oliver Boughton, Gabor Borgulya, Maurizio Cecconi, Salim Fredericks, Michelle Moreton-Clack, Iain A M MacPhee

Open access · bronzeAbstract readClinical Trial
In one paragraph

Trial report in British journal of clinical pharmacology, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
3.1field-weighted citation impact, top 9% 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

21 citing papers in PubMed, 40 citations in OpenAlex.

  1. Observational
  2. Calcineurin inhibition may prevent Alzheimer disease in people with Down syndrome.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2025
    Review
  3. Synergistic Effect of Cytochrome P450 Family 3 Subfamily A Member 5 (ACS pharmacology & translational science · 2024
    Article
  4. Review
  5. Tacrolimus-why pharmacokinetics matter in the clinic.Frontiers in transplantation · 2023
    Review
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  12. Review
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  15. Article
  16. Article
  17. Role of pharmacogenomics in dialysis and transplantation.Current opinion in nephrology and hypertension · 2014
    Article
  18. Article
  19. Review
  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

6 authors at 3 institutions in 2 countries.

Oliver BoughtonDivision of Clinical Sciences: Renal Medicine, St George's, University of London, London, UK.
Gabor Borgulya
Maurizio Cecconi
Salim Fredericks
Michelle Moreton-Clack
Iain A M MacPhee
St George's, University of London · GBSt George's Hospital · GBUniversiti Brunei Darussalam · BN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

aimsAn algorithm based on the CYP3A5 genotype to predict tacrolimus clearance to inform the optimal initial dose was derived using data from the DeKAF study (Passey et al. Br J Clin Pharmacol 2011; 72: 948-57) but was not tested in an independent cohort of patients. Our aim was to test whether the DeKAF dosing algorithm could predict estimated tacrolimus clearance in renal transplant recipients at our centre.

methodsPredicted tacrolimus clearance based on the DeKAF algorithm was compared with dose-normalized trough whole-blood concentrations (estimated clearance) on day 7 after transplantation in a single-centre cohort of 255 renal transplant recipients.

resultsThere was a weak correlation (r = 0.431) between clearance based on dose-normalized trough whole-blood concentrations and DeKAF algorithm-predicted clearance. The means of the tacrolimus clearance predicted by the DeKAF algorithm and the estimated tacrolimus clearance based on the dose-normalized trough blood concentrations were plotted against the differences in the clearance as a Bland-Altman plot. Logarithmic transformation was performed owing to the increased difference in tacrolimus clearance as the mean clearance increased. There was a highly significant systematic error (P < 0.0005) characterized by a sloped regression line [gradient, 0.88 (95% confidence interval, 0.75-1.01)] on the Bland-Altman plot.

conclusionsThe DeKAF algorithm was unable to predict the estimated tacrolimus clearance accurately based on real tacrolimus doses and blood concentrations in our cohort of patients. Other genes are known to influence the clearance of tacrolimus, and a polygenic algorithm may be more predictive than those based on a single genotype.

Indexed as

AlgorithmsKidney TransplantationAdolescentAdultAgedCohort StudiesCytochrome P-450 CYP3ADose-Response Relationship, DrugFemaleGenotypeHumansImmunosuppressive AgentsMaleMetabolic Clearance RateMiddle AgedPharmacogeneticsCYP3A5 protein, humanCytochrome P-450 CYP3AImmunosuppressive AgentsTacrolimusdosing algorithmimmunosuppressionpharmacogeneticsrenal transplanttacrolimus

Identifiers

PMID23305195
PMCPMC3769669
OpenAlexW1507899378

What OpenQuestion holds

Textmetadata
Read underepoch 390

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.