Evidence map›Paper›PMID 21742805›Full record

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

Tumor engraftment in nude mice and enrichment in stroma- related gene pathways predict poor survival and resistance to gemcitabine in patients with pancreatic cancer.

Ignacio Garrido-Laguna, Maria Uson, N V Rajeshkumar, Aik Choon Tan, Elizabeth de Oliveira, Collins Karikari, Maria C Villaroel, Ana Salomon, Gretchen Taylor, Rajni Sharma and 6 more

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 144 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
144citing papers in PubMed, 1 pooled it
5.1field-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

144 citing papers in PubMed, 1 synthesis or guideline pooled it, 251 citations in OpenAlex.

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

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

16 authors at 4 institutions in 2 countries.

Ignacio Garrido-LagunaThe Sidney Kimmel Comprehensive Cancer Center and the Sol Goldman Pancreatic Cancer Research Center, The Johns Hopkins University School of Medicine, Baltimore, Maryland, USA.
Maria Uson
N V Rajeshkumar
Aik Choon Tan
Elizabeth de Oliveira
Collins Karikari
Maria C Villaroel
Ana Salomon
Gretchen Taylor
Rajni Sharma
Ralph H Hruban
Anirban Maitra
Daniel Laheru
Belén Rubio-Viqueira
Antonio Jimeno
Manuel Hidalgo
Spanish National Cancer Research Centre · ESSidney Kimmel Comprehensive Cancer Center · USUniversidad San Pablo CEU · ESJohns Hopkins University · 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
Hedgehog Inhibitors in Pancreas CancerR01CA113669 · NCI · UNIVERSITY OF TX MD ANDERSON CAN CTR · PI MAITRA, ANIRBAN · 2005 to 2014
$3.1M
Individualized Treatment of Pancreatic CancerR01CA116554 · NCI · SPANISH NATIONAL CANCER CENTER · PI HIDALGO, MANUEL · 2006 to 2010
$1.3M
Tailoring New Drugs in Pancreatic CancerR01CA129963 · NCI · SPANISH NATIONAL CANCER CENTER · PI HIDALGO, MANUEL · 2007 to 2011
$1.2M
NCI NIH HHS CA113669NCI NIH HHS CA116554NCI NIH HHS CA129963NCI NIH HHS P30 CA046934NCI NIH HHS R01 CA113669NCI NIH HHS R01 CA116554NCI NIH HHS R01 CA129963
6 · The paper itself

Abstract

purposeThe goal of this study was to evaluate prospectively the engraftment rate, factors influencing engraftment, and predictability of clinical outcome of low-passage xenografts from patients with resectable pancreatic ductal adenocarcinoma (PDA) and to establish a bank of PDA xenografts. EXPERIMENTAL

designPatients with resectable PDA scheduled for resection at the Johns Hopkins Hospital were eligible. Representative pieces of tumor were implanted in nude mice. The status of the SMAD4 gene and content of tumor-generating cells were determined by immunohistochemistry. Gene expression was carried out by using a U133 Plus 2.0 array. Patients were followed for progression and survival.

resultsA total of 94 patients with PDA were resected, 69 tumors implanted in nude mice, and 42 (61%) engrafted. Engrafted carcinomas were more often SMAD4 mutant, and had a metastatic gene expression signature and worse prognosis. Tumors from patients resistant to gemcitabine were enriched in stroma-related gene pathways. Tumors sensitive to gemcitabine were enriched in cell cycle and pyrimidine gene pathways. The time to progression for patients who received treatment with gemcitabine for metastatic disease (n = 7) was double in patients with xenografts sensitive to gemcitabine.

conclusionA successful xenograft was generated in 61% of patients attempted, generating a pool of 42 PDA xenografts with significant biological information and annotated clinical data. Patients with PDA and SMAD4 inactivation have a better engraftment rate. Engraftment is a poor prognosis factor, and engrafted tumors have a metastatic gene expression signature. Tumors from gemcitabine-resistant patients were enriched in stromal pathways.

Indexed as

AdultAgedAged, 80 and overAnimalsAntineoplastic Combined Chemotherapy ProtocolsCarcinoma, Pancreatic DuctalDeoxycytidineDrug Resistance, NeoplasmFemaleGemcitabineGene Expression ProfilingHumansMaleMiceMice, NudeMiddle AgedDeoxycytidineGemcitabineSmad4 ProteinSMAD4 protein, human

Identifiers

PMID21742805
PMCPMC3210576
OpenAlexW2162181903

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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.