Evidence map›Paper›PMID 19092150›Full record

ArticleThe New England journal of medicine2008

Dicer, Drosha, and outcomes in patients with ovarian cancer.

William M Merritt, Yvonne G Lin, Liz Y Han, Aparna A Kamat, Whitney A Spannuth, Rosemarie Schmandt, Diana Urbauer, Len A Pennacchio, Jan-Fang Cheng, Alpa M Nick and 12 more

Erratum issuedOpen access · bronzeAbstract readComparative Study
In one paragraph

Article in The New England journal of medicine, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 386 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
386citing papers in PubMed, 1 pooled it
24.3field-weighted citation impact, top 1% 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

386 citing papers in PubMed, 1 synthesis or guideline pooled it, 717 citations in OpenAlex.

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

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

22 authors at 6 institutions in 1 country.

William M MerrittUniversity of Texas M.D. Anderson Cancer Center, Houston, TX 77230, USA.
Yvonne G Lin
Liz Y Han
Aparna A Kamat
Whitney A Spannuth
Rosemarie Schmandt
Diana Urbauer
Len A Pennacchio
Jan-Fang Cheng
Alpa M Nick
Michael T Deavers
Alexandra Mourad-Zeidan
Hua Wang
Peter Mueller
Marc E Lenburg
Joe W Gray
Samuel Mok
Michael J Birrer
Gabriel Lopez-Berestein
Robert L Coleman
Menashe Bar-Eli
Anil K Sood
The University of Texas MD Anderson Cancer Center · USLawrence Berkeley National Laboratory · USBrigham and Women's Hospital · USCenter for Cancer Research · USJoint Genome Institute · USUniversity School · US

Funding

UNIVERSITY OF TEXAS MD ANDERSON SPORE IN OVARIAN CANCERP50CA083639 · NCI · UNIVERSITY OF TX MD ANDERSON CAN CTR · PI BAST, ROBERT C · 1999 to 2015
$33.0M
Tissue and Outcomes CoreP50CA058207 · NCI · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI GRAY, JOE W. · 1992 to 2012
$32.7M
Systems-Based Predictions of Responses to Cancer TherapyU54CA112970 · NCI · UNIVERSITY OF CALIF-LAWRENC BERKELEY LAB · PI GRAY, JOE W. · 2004 to 2014
$27.1M
Training of Academic Gynecologic OncologistsT32CA101642 · NCI · UNIVERSITY OF TX MD ANDERSON CAN CTR · PI ANIL K SOOD, Kathleen Schmeler · 2005 to 2026
$9.2M
Ovarian Cancer: Mechanisms of Neuroendocrine RegulationR01CA109298 · NCI · UNIVERSITY OF TX MD ANDERSON CAN CTR · PI SOOD, ANIL K · 2005 to 2017
$4.5M
Tumor metastasis: Biobehavioral mechanismsR01CA110793 · NCI · UNIVERSITY OF TX MD ANDERSON CAN CTR · PI SOOD, ANIL K · 2004 to 2009
$2.1M
The Use of Transcriptional Factors as Targets and Agents in CarcinogenesisZIASC000165 · NCI · DIVISION OF CLINICAL SCIENCES - NCI · PI BIRRER, MICHAEL · 2009 to 2009
$187k
NCI NIH HHS CA109298NCI NIH HHS CA110793NCI NIH HHS P50 CA058207NCI NIH HHS P50 CA083639NCI NIH HHS P50 CA58207NCI NIH HHS R01 CA109298NCI NIH HHS R01 CA110793NCI NIH HHS T32 CA101642NCI NIH HHS U54 CA112970
6 · The paper itself

Abstract

backgroundWe studied Dicer and Drosha, components of the RNA-interference machinery, in ovarian cancer.

methodsWe measured messenger RNA (mRNA) levels of Dicer and Drosha in specimens of invasive epithelial ovarian cancer from 111 patients, using a quantitative reverse-transcriptase-polymerase-chain-reaction assay, and compared the results with clinical outcomes. Validation was performed with the use of published microarray data from cohorts of patients with ovarian, breast, and lung cancer. Mutational analyses of genomic DNA from the Dicer and Drosha genes were performed in a subgroup of ovarian-cancer specimens. Dicer-dependent functional assays were performed by means of in vitro transfection with small interfering RNA (siRNA) and short hairpin RNA (shRNA).

resultsLevels of Dicer and Drosha mRNA correlated with the levels of expression of the corresponding protein and were decreased in 60% and 51% of ovarian-cancer specimens, respectively. Low Dicer expression was significantly associated with advanced tumor stage (P=0.007), and low Drosha expression with suboptimal surgical cytoreduction (P=0.02). Cancer specimens with both high Dicer expression and high Drosha expression were associated with increased median survival (>11 years, vs. 2.66 years for other subgroups; P<0.001). We found three independent predictors of reduced disease-specific survival in multivariate analyses: low Dicer expression (hazard ratio, 2.10; P=0.02), high-grade histologic features (hazard ratio, 2.46; P=0.03), and poor response to chemotherapy (hazard ratio, 3.95; P<0.001). Poor clinical outcomes among patients with low Dicer expression were validated in additional cohorts of patients. Rare missense mutations were found in the Dicer and Drosha genes, but their presence or absence did not correlate with the level of expression. Functional assays indicated that gene silencing with shRNA, but not siRNA, may be impaired in cells with low Dicer expression.

conclusionsOur findings indicate that levels of Dicer and Drosha mRNA in ovarian-cancer cells have associations with outcomes in patients with ovarian cancer.

Indexed as

Gene Expression Regulation, NeoplasticRNA InterferenceAdultAgedAged, 80 and overBreast NeoplasmsCell Line, TumorDEAD-box RNA HelicasesDNA Mutational AnalysisEndoribonucleasesFemaleHumansKaplan-Meier EstimateLung NeoplasmsMicroRNAsMiddle AgedDEAD-box RNA HelicasesDICER1 protein, humanDROSHA protein, humanEndoribonucleasesMicroRNAsRibonuclease IIIRNA, MessengerRNA, Small Interfering

Identifiers

PMID19092150
PMCPMC2710981
OpenAlexW2077330022

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Registered trials

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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.