Evidence map›Paper›PMID 22664480›Full record

ArticleThe pharmacogenomics journal2013

Functional characterization of ABCC2 promoter polymorphisms and allele-specific expression.

T D Nguyen, S Markova, W Liu, J M Gow, R M Baldwin, M Habashian, M V Relling, M J Ratain, D L Kroetz

Open access · greenAbstract read
In one paragraph

Article in The pharmacogenomics journal, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed, 2 pooled it
1.2field-weighted citation impact, top 21% 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

24 citing papers in PubMed, 2 syntheses or guidelines pooled it, 37 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Trial
  4. Trial
  5. Article
  6. Review
  7. Article
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  13. Racial Disparity in Drug Disposition in the Digestive Tract.International journal of molecular sciences · 2021
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  16. Article
  17. Pharmacogenetics of hepatocellular carcinoma and cholangiocarcinoma.Cancer drug resistance (Alhambra, Calif.) · 2019
    Review
  18. Article
  19. Article
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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

9 authors at 3 institutions in 1 country.

T D NguyenDepartment of Bioengineering and Therapeutic Sciences, University of California San Francisco, San Francisco, CA, USA.
S Markova
W Liu
J M Gow
R M Baldwin
M Habashian
M V Relling
M J Ratain
D L Kroetz
University of California, San Francisco · USUniversity of Chicago · USSt. Jude Children's Research Hospital · US

Funding

Viral Vector Technology (VVTSR)P30CA021765 · NCI · ST. JUDE CHILDREN'S RESEARCH HOSPITAL · PI CHARLES ROBERTS · 1985 to 2026
$166.9M
Whole GenomeU01GM061393 · NIGMS · UNIVERSITY OF CHICAGO · PI RATAIN, MARK J · 2000 to 2014
$39.0M
PHARMACOGENETICS OF MEMBRANE TRANSPORTERSU01GM061390 · NIGMS · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI GIACOMINI, KATHLEEN M · 2000 to 2009
$29.2M
Pharmacogenomics of Membrane TransportersU19GM061390 · NIGMS · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI YEE, SOOK WAH · 2010 to 2014
$16.3M
PAARK4Kids-Pharmacogenomics of Anticancer Agents Research in ChildrenU01GM092666 · NIGMS · ST. JUDE CHILDREN'S RESEARCH HOSPITAL · PI RELLING, MARY V · 2010 to 2014
$8.9M
PHARMACEUTICAL SCIENCES AND PHARMACOGENOMICST32GM007175 · NIGMS · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI AHITUV, NADAV, KROETZ, DEANNA L · 1985 to 2021
$7.1M
NCI NIH HHS CA21765NCI NIH HHS P30 CA021765NIGMS NIH HHS GM61390NIGMS NIH HHS GM61393NIGMS NIH HHS GM92666NIGMS NIH HHS T32 GM007175NIGMS NIH HHS U01 GM061390NIGMS NIH HHS U01 GM061393NIGMS NIH HHS U01 GM092666NIGMS NIH HHS U19 GM061390
6 · The paper itself

Abstract

Multidrug resistance protein 2 (MRP2, ABCC2) is an efflux membrane transporter highly expressed in liver, kidney and intestine with important physiological and pharmacological roles. The goal of this study was to investigate the functional significance of promoter region polymorphisms in ABCC2 and potential allele-specific expression. Twelve polymorphisms in the 1.6 kb region upstream of the translation start site were identified by resequencing 247 DNA samples from ethnically diverse individuals. Luciferase reporter gene assays showed that ABCC2 -24C>T both alone and as part of a common haplotype (-24C>T/-1019A>G/-1549G>A) increased promoter function 35% compared with the reference sequence (P<0.0001). No other common variants or haplotypes affected ABCC2 promoter activity. Allele-specific expression was also investigated as a mechanism to explain reported associations of the synonymous ABCC2 3972C>T variant with pharmacokinetic phenotypes. In Caucasian liver samples (n=41) heterozygous for the 3972C>T polymorphism, the 3972C allele was preferentially transcribed relative to the 3972T allele (P<0.0001). This allelic imbalance was particularly apparent in samples with haplotypes containing two or three promoter/untranslated region variants (-1549G>A, -1019A>G and -24C>T). The observed allelic imbalance was not associated with hepatic or renal ABCC2 mRNA expression. Additional mechanisms will need to be explored to account for the interindividual variation in ABCC2 expression and MRP2 function.

Indexed as

AllelesATP-Binding Cassette, Sub-Family C ProteinsCell Line, TumorHaplotypesHep G2 CellsHumansLiverMultidrug Resistance-Associated Protein 2Polymorphism, Single NucleotidePromoter Regions, GeneticABCC2 protein, humanATP-Binding Cassette, Sub-Family C ProteinsMultidrug Resistance-Associated Protein 2

Identifiers

PMID22664480
PMCPMC3435480
OpenAlexW2066093094

What OpenQuestion holds

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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.