Evidence map›Paper›PMID 24803579›Full record

ArticleClinical cancer research : an official journal of the American Association for Cancer Research2014

Molecular profiling of patient-matched brain and extracranial melanoma metastases implicates the PI3K pathway as a therapeutic target.

Guo Chen, Nitin Chakravarti, Kimberly Aardalen, Alexander J Lazar, Michael T Tetzlaff, Bradley Wubbenhorst, Sang-Bae Kim, Scott Kopetz, Alicia A Ledoux, Y N Vashisht Gopal and 8 more

Open access · bronzeAbstract read
In one paragraph

Article in Clinical cancer research : an official journal of the American Association for Cancer Research, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 117 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
117citing papers in PubMed, 2 pooled it
5.7field-weighted citation impact, top 3% 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

117 citing papers in PubMed, 2 syntheses or guidelines pooled it, 210 citations in OpenAlex.

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57 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

18 authors at 2 institutions in 2 countries.

Guo ChenDepartments of Melanoma Medical Oncology, gchen2@mdanderson.org.
Nitin ChakravartiPathology.
Kimberly AardalenNovartis Institutes for Biomedical Research, Emeryville, California; and.
Alexander J LazarPathology.
Michael T TetzlaffPathology.
Bradley WubbenhorstDivision of Medical Genetics, Department of Medicine, The University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania.
Sang-Bae KimSystems Biology and.
Scott KopetzGastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas;
Alicia A LedouxPathology.
Y N Vashisht GopalDepartments of Melanoma Medical Oncology.
Cristiano Goncalves PereiraDepartments of Melanoma Medical Oncology.
Wanleng DengDepartments of Melanoma Medical Oncology.
Ju-Seog LeeSystems Biology and.
Katherine L NathansonDivision of Medical Genetics, Department of Medicine, The University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania.
Kenneth D AldapePathology.
Victor G PrietoPathology.
Darrin StuartNovartis Institutes for Biomedical Research, Emeryville, California; and.
Michael A DaviesDepartments of Melanoma Medical Oncology, Systems Biology and.
Melanoma Institute Australia · AUThe University of Texas MD Anderson Cancer Center · US

Funding

Tumor Evolution and Metastasis ProgramP30CA016672 · NCI · UNIVERSITY OF TX MD ANDERSON CAN CTR · PI Kathrin Milbury · 1985 to 2026
$290.8M
UT M.D. Anderson Cancer Center SPORE in MelanomaP50CA093459 · NCI · UNIVERSITY OF TX MD ANDERSON CAN CTR · PI GRIMM, ELIZABETH A · 2004 to 2014
$23.7M
The Role of the PI3K-AKT Pathway in Melanoma Brain MetastasisR01CA154710 · NCI · UNIVERSITY OF TX MD ANDERSON CAN CTR · PI DAVIES, MICHAEL · 2011 to 2015
$1.6M
NCI NIH HHS P30 CA016672NCI NIH HHS P50 CA093459NCI NIH HHS R01 CA154710
6 · The paper itself

Abstract

purposeAn improved understanding of the molecular pathogenesis of brain metastases, one of the most common and devastating complications of advanced melanoma, may identify and prioritize rational therapeutic approaches for this disease. In particular, the identification of molecular differences between brain and extracranial metastases would support the need for the development of organ-specific therapeutic approaches. EXPERIMENTAL

designHotspot mutations, copy number variations (CNV), global mRNA expression patterns, and quantitative analysis of protein expression and activation by reverse-phase protein array (RPPA) analysis were evaluated in pairs of melanoma brain metastases and extracranial metastases from patients who had undergone surgical resection for both types of tumors.

resultsThe status of 154 previously reported hotspot mutations, including driver mutations in BRAF and NRAS, were concordant in all evaluable patient-matched pairs of tumors. Overall patterns of CNV, mRNA expression, and protein expression were largely similar between the paired samples for individual patients. However, brain metastases demonstrated increased expression of several activation-specific protein markers in the PI3K/AKT pathway compared with the extracranial metastases.

conclusionsThese results add to the understanding of the molecular characteristics of melanoma brain metastases and support the rationale for additional testing of the PI3K/AKT pathway as a therapeutic target in these highly aggressive tumors.

Indexed as

BrainBrain NeoplasmsDNA Copy Number VariationsGTP PhosphohydrolasesHumansMelanomaMembrane ProteinsMutationNeoplasm MetastasisPhosphatidylinositol 3-KinasesProto-Oncogene Proteins B-rafProto-Oncogene Proteins c-aktRNA, MessengerSignal TransductionGTP PhosphohydrolasesMembrane ProteinsNRAS protein, humanPhosphatidylinositol 3-KinasesProto-Oncogene Proteins B-rafProto-Oncogene Proteins c-aktRNA, Messenger

Identifiers

PMID24803579
PMCPMC4216765
OpenAlexW2098395271

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.