Evidence map›Paper›PMID 20923857›Full record

ArticleMolecular cancer therapeutics2010

Identification of predictive markers of response to the MEK1/2 inhibitor selumetinib (AZD6244) in K-ras-mutated colorectal cancer.

John J Tentler, Sujatha Nallapareddy, Aik Choon Tan, Anna Spreafico, Todd M Pitts, M Pia Morelli, Heather M Selby, Maria I Kachaeva, Sara A Flanigan, Gillian N Kulikowski and 4 more

Open access · bronzeAbstract read
In one paragraph

Article in Molecular cancer therapeutics, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 47 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
47citing papers in PubMed, 1 pooled it
3.5field-weighted citation impact, top 7% 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

47 citing papers in PubMed, 1 synthesis or guideline pooled it, 74 citations in OpenAlex.

  1. Pooled it
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  3. Review
  4. Review
  5. Current methods in translational cancer research.Cancer metastasis reviews · 2021
    Review
  6. Biomarkers in Colorectal Cancer: Current Research and Future Prospects.International journal of molecular sciences · 2020
    Review
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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

14 authors at 2 institutions in 1 country.

John J TentlerDivision of Medical Oncology, University of Colorado Denver Anschutz Medical Campus, Aurora, Colorado 80045, USA. john.tentler@ucdenver.edu
Sujatha Nallapareddy
Aik Choon Tan
Anna Spreafico
Todd M Pitts
M Pia Morelli
Heather M Selby
Maria I Kachaeva
Sara A Flanigan
Gillian N Kulikowski
Stephen Leong
John J Arcaroli
Wells A Messersmith
S Gail Eckhardt
University of Colorado Anschutz Medical Campus · USUniversity of Colorado Denver · US

Funding

University of Colorado Cancer Center Support Grant - Lung Cancer Patient-Derived Xenografts with Autologous Human Immune SystemsP30CA046934 · NCI · UNIVERSITY OF COLORADO DENVER · PI James V Degregori · 1988 to 2026
$117.0M
TRAINING IN PHARMACOLOGY OF ANTINEOPLASTIC AGENTST32CA079446 · NCI · UNIVERSITY OF COLORADO DENVER · PI ECKHARDT, S. GAIL · 1999 to 2009
$1.9M
Development of Mechanism-Based Anticancer TherapyK24CA106349 · NCI · UNIVERSITY OF COLORADO DENVER · PI ECKHARDT, S. GAIL · 2005 to 2009
$926k
NCI NIH HHS CA079446NCI NIH HHS CA106349NCI NIH HHS CA46934NCI NIH HHS K24 CA106349NCI NIH HHS P30 CA046934NCI NIH HHS T32 CA079446
6 · The paper itself

Abstract

Mutant K-ras activity leads to the activation of the RAS/RAF/MEK/ERK pathway in approximately 44% of colorectal cancer (CRC) tumors. Accordingly, several inhibitors of the MEK pathway are under clinical evaluation in several malignancies including CRC. The aim of this study was to develop and characterize predictive biomarkers of response to the MEK1/2 inhibitor AZD6244 in CRC in order to maximize the clinical utility of this agent. Twenty-seven human CRC cell lines were exposed to AZD6244 and classified according to the IC(50) value as sensitive (≤ 0.1 μmol/L) or resistant (>1 μmol/L). All cell lines were subjected to immunoblotting for effector proteins, K-ras/BRAF mutation status, and baseline gene array analysis. Further testing was done in cell line xenografts and K-ras mutant CRC human explants models to develop a predictive genomic classifier for AZD6244. The most sensitive and resistant cell lines were subjected to differential gene array and pathway analyses. Members of the Wnt signaling pathway were highly overexpressed in cell lines resistant to AZD6244 and seem to be functionally involved in mediating resistance by shRNA knockdown studies. Baseline gene array data from CRC cell lines and xenografts were used to develop a k-top scoring pair (k-TSP) classifier, which predicted with 71% accuracy which of a test set of patient-derived K-ras mutant CRC explants would respond to AZD6244, providing the basis for a patient-selective clinical trial. These results also indicate that resistance to AZD6244 may be mediated, in part, by the upregulation of the Wnt pathway, suggesting potential rational combination partners for AZD6244 in CRC.

Indexed as

AlgorithmsAnimalsAntineoplastic AgentsBenzimidazolesBiomarkers, TumorCell Line, TumorCell ProliferationColorectal NeoplasmsDrug Resistance, NeoplasmGene Expression Regulation, NeoplasticHumansImmunoblottingMiceMice, NudeMitogen-Activated Protein Kinase KinasesMutationAntineoplastic AgentsAZD 6244BenzimidazolesBiomarkers, TumorKRAS protein, humanMitogen-Activated Protein Kinase KinasesProtein Kinase InhibitorsProto-Oncogene ProteinsProto-Oncogene Proteins p21(ras)ras Proteins

Identifiers

PMID20923857
PMCPMC3931013
OpenAlexW2135707008

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.