Evidence map›Paper›PMID 11104567›Full record

SynthesisBritish journal of cancer2000

C-myc amplification in breast cancer: a meta-analysis of its occurrence and prognostic relevance.

S L Deming, S J Nass, R B Dickson, B J Trock

Open access · hybridAbstract readMeta-Analysis
In one paragraph

Synthesis in British journal of cancer, 2000. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 129 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
129citing papers in PubMed, 2 pooled it
4.9field-weighted citation impact, top 4% 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

129 citing papers in PubMed, 2 syntheses or guidelines pooled it, 303 citations in OpenAlex.

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69 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

4 authors at 2 institutions in 1 country.

S L DemingDepartment of Oncology and Lombardi Cancer Center, Georgetown University, Wisconsin Avenue, Washington, DC 20007, USA.
S J Nass
R B Dickson
B J Trock
Georgetown University · USJohns Hopkins Medicine · US

Funding

EGF FAMILY INDUCTION OF MAMMARY HYPERPLASIAS AND TUMORSR01CA072460 · NCI · GEORGETOWN UNIVERSITY · PI DICKSON, ROBERT B. · 1997 to 2000
$235k
NCI NIH HHS R01 CA 72460NIA NIH HHS R01 AG 1496
6 · The paper itself

Abstract

Data from basic research suggests that amplification of the proto-oncogene c-myc is important in breast cancer pathogenesis, but its frequency of amplification and prognostic relevance in human studies have been inconsistent. In an effort to clarify the clinical significance of c-myc amplification in breast cancer, we conducted a comprehensive literature search and a meta-analysis in which 29 studies were evaluated. The weighted average frequency of c-myc amplification in breast tumours was 15.7% (95% CI = 12.5-18.8%), although estimates in individual studies exhibited significant heterogeneity, P<0.0001. C-myc amplification exhibited significant but weak associations with tumour grade (RR = 1.61), lymph-node metastasis (RR = 1.24), negative progesterone receptor status (RR = 1.27), and postmenopausal status (RR = 0.82). Amplification was significantly associated with risk of relapse and death, with pooled estimates RR = 2.05 (95% CI = 1.51-2.78) and RR = 1.74 (95% CI = 1.27-2.39), respectively. This effect did not appear to be merely a surrogate for other prognostic factors. These results suggest that c-myc amplification is relatively common in breast cancer and may provide independent prognostic information. More rigorous studies with consistent methodology are required to validate this association, and to investigate its potential as a molecular predictor of specific therapy response.

Indexed as

Gene AmplificationBreast NeoplasmsFemaleGenes, mycHumansPredictive Value of TestsPrognosisProto-Oncogene MasProto-Oncogene Mas

Identifiers

PMID11104567
PMCPMC2363455
OpenAlexW1978158433

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.