Evidence map›Paper›PMID 23252947›Full record

Trial reportPharmacogenomics2013

Association of carbamazepine major metabolism and transport pathway gene polymorphisms and pharmacokinetics in patients with epilepsy.

Yogita Ghodke Puranik, Angela K Birnbaum, Susan E Marino, Ghada Ahmed, James C Cloyd, Rory P Remmel, Ilo E Leppik, Jatinder K Lamba

Open access · greenAbstract readClinical Trial
In one paragraph

Trial report in Pharmacogenomics, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 40 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
40citing papers in PubMed, 3 pooled it
10.2field-weighted citation impact, top 2% 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

40 citing papers in PubMed, 3 syntheses or guidelines pooled it, 103 citations in OpenAlex.

  1. Pooled it
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  3. Association between microsomal epoxide hydrolase 1 polymorphisms and susceptibility to esophageal cancer: a meta-analysis.Tumour biology : the journal of the International Society for Oncodevelopmental Biology and Medicine · 2013
    Pooled it
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  7. Investigation of thePharmaceuticals (Basel, Switzerland) · 2025
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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

8 authors at 2 institutions in 1 country.

Yogita Ghodke PuranikDepartment of Experimental & Clinical Pharmacology, College of Pharmacy, University of Minnesota, Minneapolis, MN, USA.
Angela K Birnbaum
Susan E Marino
Ghada Ahmed
James C Cloyd
Rory P Remmel
Ilo E Leppik
Jatinder K Lamba
University of Minnesota · USMinnesota Epilepsy Group · US

Funding

TREATMENT OF PATIENTS WITH PSEUDO-SEIZURESP50NS016308 · NINDS · UNIVERSITY OF MINNESOTA TWIN CITIES · PI CLOYD, JAMES C. · 1985 to 2006
$8.5M
Clinical Impact of Unstable AED Levels in Elderly Nursing Home Epilepsy PatientsR01AG026390 · NIA · UNIVERSITY OF MINNESOTA · PI BIRNBAUM, ANGELA K · 2007 to 2011
$1.9M
Forecasting Topiramate's Effect on Cognitive FunctionK01NS050309 · NINDS · UNIVERSITY OF MINNESOTA TWIN CITIES · PI MARINO, SUSAN E · 2005 to 2009
$720k
NIA NIH HHS R01 AG026390NINDS NIH HHS K01 NS050309NINDS NIH HHS K01NS050309NINDS NIH HHS P50 NS016308NINDS NIH HHS P50 NS16308
6 · The paper itself

Abstract

aimThe aim of this study was to evaluate the association of genetic variants in the major genes involved in carbamazepine (CBZ) metabolism and transport with its pharmacokinetics in epilepsy patients. MATERIALS &

methodsTwenty-five SNPs within seven CBZ pathway genes, namely CYP3A4, CYP3A5, EPHX1, NR1I2, UGT2B7, ABCB1 and ABCC2, were analyzed for association with CBZ pharmacokinetics in 90 epilepsy patients.

resultsThe CYP3A4*1B SNP was significantly associated with CBZ clearance. Significant association of EPHX1 SNPs was observed with greater carbamazepine-10,11-trans dihydrodiol:carbamazepine 10-11 epoxide ratios. Among drug transporters, ABCB1 and ABCC2 SNPs were significantly associated with altered CBZ clearance.

conclusionSNPs within CBZ pathway genes contribute to interpatient variation in CBZ pharmacokinetics and might contribute to pharmacoresistant epilepsy. Although our results need further clinical validation in a larger patient cohort, they indicate that genetic variation in CBZ pathway genes could influence its pharmacokinetics, and hence would have clinical significance.

Indexed as

AnticonvulsantsATP-Binding Cassette, Sub-Family C ProteinsATP Binding Cassette Transporter, Subfamily BATP Binding Cassette Transporter, Subfamily B, Member 1Biological TransportCarbamazepineCytochrome P-450 CYP3AEpilepsyEpoxide HydrolasesFemaleGenotypeHumansMaleMiddle AgedMultidrug Resistance-Associated Protein 2Polymorphism, Single NucleotideABCB1 protein, humanABCC2 protein, humanAnticonvulsantsATP-Binding Cassette, Sub-Family C ProteinsATP Binding Cassette Transporter, Subfamily BATP Binding Cassette Transporter, Subfamily B, Member 1CarbamazepineCYP3A4 protein, humanCytochrome P-450 CYP3AEPHX1 protein, humanEpoxide HydrolasesMultidrug Resistance-Associated Protein 2NR1I2 protein, humanPregnane X ReceptorReceptors, Steroid

Identifiers

PMID23252947
PMCPMC3570048
OpenAlexW1977023935

What OpenQuestion holds

Textmetadata
LicenceTDM
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.