Evidence map›Paper›PMID 21791633›Full record

ArticleClinical cancer research : an official journal of the American Association for Cancer Research2011

Dual kinase inhibition of EGFR and HER2 overcomes resistance to cetuximab in a novel in vivo model of acquired cetuximab resistance.

Kelly M Quesnelle, Jennifer R Grandis

Open access · bronzeAbstract read
In one paragraph

Article in Clinical cancer research : an official journal of the American Association for Cancer Research, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 44 papers.

0numbers the graph read from it
0cells of the map it votes in
44citing papers in PubMed
5.4field-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

44 citing papers in PubMed, 93 citations in OpenAlex.

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  19. Inhibition of proliferation and induction of apoptosis in RB116 retinoblastoma cells by afatinib treatment.Tumour biology : the journal of the International Society for Oncodevelopmental Biology and Medicine · 2016
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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

2 authors at 1 institution in 1 country.

Kelly M QuesnelleDepartment of Pharmacology & Chemical Biology, University of Pittsburgh, Pittsburgh, Pennsylvania, USA.
Jennifer R Grandis
UPMC Hillman Cancer Center · US

Funding

VECTOR CORE FACILITYP30CA047904 · NCI · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI Jessie Nedrow · 1988 to 2026
$158.0M
WILD TYPE P53-BASED ADJUVANT IMMUNOTHERAPY FOR SCCHNP50CA097190 · NCI · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI CHRISTOPHER J. BAKKENIST · 2004 to 2026
$49.6M
GRPR Signaling in SCCHN: Integration with EGFRR01CA098372 · NCI · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI GRANDIS, JENNIFER RUBIN · 2004 to 2017
$3.8M
PREDOCTORAL TRAINING IN PHARMACOLOGICAL SCIENCEST32GM008424 · NIGMS · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI PAGANO, PATRICK J · 1994 to 2019
$3.4M
Resistance to EGFR-Targeting agents in OSCCF31DE020947 · NIDCR · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI QUESNELLE, KELLY MOORE · 2010 to 2011
$79k
NCI NIH HHS P30 CA047904NCI NIH HHS P50 CA097190NCI NIH HHS P50CA097190NCI NIH HHS R01 CA098372NCI NIH HHS R01CA098372NIDCR NIH HHS F31 DE020947NIDCR NIH HHS F31DE020947NIGMS NIH HHS T32 GM008424NIGMS NIH HHS T32GM08424
6 · The paper itself

Abstract

purposeAcquired resistance to cetuximab, a chimeric epidermal growth factor receptor (EGFR)-targeting monoclonal antibody, is a widespread problem in the treatment of solid tumors. The paucity of preclinical models has limited investigations to determine the mechanism of acquired therapeutic resistance, thereby limiting the development of effective treatments. The purpose of this study was to generate cetuximab-resistant tumors in vivo to characterize mechanisms of acquired resistance. EXPERIMENTAL

designWe generated cetuximab-resistant clones from a cetuximab-sensitive bladder cancer cell line in vivo by exposing cetuximab-sensitive xenografts to increasing concentrations of cetuximab, followed by validation of the resistant phenotype in vivo and in vitro using invasion assays. A candidate-based approach was used to examine the role of HER2 on mediating cetuximab resistance both in vitro and in vivo.

resultsWe generated a novel model of cetuximab resistance, and, for the first time in the context of EGFR-inhibitor resistance, we identified increased phosphorylation of a C-terminal fragment of HER2 (611-CTF) in cetuximab-resistant cells. Afatinib (BIBW-2992), an irreversible kinase inhibitor targeting EGFR and HER2, successfully inhibited growth of the cetuximab-resistant cells in vitro. When afatinib was combined with cetuximab in vivo, we observed an additive growth inhibitory effect in cetuximab-resistant xenografts.

conclusionsThese data suggest that the use of dual EGFR-HER2 kinase inhibitors can enhance responses to cetuximab, perhaps in part due to downregulation of 611-CTF. This study conducted in a novel in vivo model provides a mechanistic rationale for ongoing phase I clinical trials using this combination treatment modality.

Indexed as

AnimalsAntibodies, MonoclonalAntibodies, Monoclonal, HumanizedAntineoplastic Combined Chemotherapy ProtocolsCell Line, TumorCetuximabDisease Models, AnimalDrug Resistance, NeoplasmDrug SynergismErb-b2 Receptor Tyrosine KinasesErbB ReceptorsGene SilencingHumansMiceMice, NudeNeoplasmsAntibodies, MonoclonalAntibodies, Monoclonal, HumanizedCetuximabErb-b2 Receptor Tyrosine KinasesErbB ReceptorsProtein Kinase InhibitorsRNA, Small Interfering

Identifiers

PMID21791633
PMCPMC3426303
OpenAlexW2145553893

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.