Evidence map›Paper›PMID 27995529›Full record

ArticleClinical pharmacokinetics2017

CYP2C8 Genotype Significantly Alters Imatinib Metabolism in Chronic Myeloid Leukaemia Patients.

Daniel T Barratt, Hannah K Cox, Andrew Menelaou, David T Yeung, Deborah L White, Timothy P Hughes, Andrew A Somogyi

Abstract readComparative Study
PubMed Publisher
In one paragraph

Article in Clinical pharmacokinetics, 2017. 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
1.4field-weighted citation impact, top 16% 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, 23 citations in OpenAlex.

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  11. The impact of genetic variants in theFrontiers in endocrinology · 2022
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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

7 authors at 3 institutions in 1 country.

Daniel T BarrattDiscipline of Pharmacology, Adelaide Medical School, University of Adelaide, Adelaide, SA, 5005, Australia. daniel.barratt@adelaide.edu.au.
Hannah K CoxDiscipline of Pharmacology, Adelaide Medical School, University of Adelaide, Adelaide, SA, 5005, Australia.
Andrew MenelaouSouth Australian Health and Medical Research Institute (SAHMRI), Adelaide, SA, Australia.
David T YeungSouth Australian Health and Medical Research Institute (SAHMRI), Adelaide, SA, Australia.
Deborah L WhiteSouth Australian Health and Medical Research Institute (SAHMRI), Adelaide, SA, Australia.
Timothy P HughesSouth Australian Health and Medical Research Institute (SAHMRI), Adelaide, SA, Australia.
Andrew A SomogyiDiscipline of Pharmacology, Adelaide Medical School, University of Adelaide, Adelaide, SA, 5005, Australia.
South Australian Health and Medical Research Institute · AUUniversity of Adelaide · AURoyal Adelaide Hospital · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveThe aims of this study were to determine the effects of the CYP2C8*3 and *4 polymorphisms on imatinib metabolism and plasma imatinib concentrations in chronic myeloid leukaemia (CML) patients.

methodsWe genotyped 210 CML patients from the TIDELII trial receiving imatinib 400-800 mg/day for CYP2C8*3 (rs11572080, rs10509681) and *4 (rs1058930). Steady-state trough total plasma N-desmethyl imatinib (major metabolite):imatinib concentration ratios (metabolic ratios) and trough total plasma imatinib concentrations were compared between genotypes (one-way ANOVA with Tukey post hoc).

resultsCYP2C8*3 (n = 34) and *4 (n = 15) carriers had significantly higher (P < 0.01) and lower (P < 0.01) metabolic ratios, respectively, than CYP2C8*1/*1 (n = 147) patients (median ± standard deviation: 0.28 ± 0.08, 0.18 ± 0.06 and 0.22 ± 0.08, respectively). Plasma imatinib concentrations were consequently > 50% higher for CYP2C8*1/*4 than for CYP2C8*1/*1 and CYP2C8*3 carriers (2.18 ± 0.66 vs. 1.45 ± 0.74 [P < 0.05] and 1.36 ± 0.98 μg/mL [P < 0.05], respectively).

conclusionsCYP2C8 genotype significantly alters imatinib metabolism in patients through gain- and loss-of-function mechanisms.

Indexed as

AdultAgedAged, 80 and overClinical Trials, Phase II as TopicCytochrome P-450 CYP2C8FemaleGenotypeHumansImatinib MesylateLeukemia, Myelogenous, Chronic, BCR-ABL PositiveMaleMiddle AgedPharmacogeneticsPolymorphism, GeneticProtein Kinase InhibitorsReceptor Protein-Tyrosine KinasesCYP2C8 protein, humanCytochrome P-450 CYP2C8Imatinib MesylateProtein Kinase InhibitorsReceptor Protein-Tyrosine Kinases

Identifiers

PMID27995529
OpenAlexW2567083292

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.