Evidence map›Paper›PMID 15494720›Full record

ArticleBritish journal of cancer2004

Mutant, wild type, or overall p53 expression: freedom from clinical progression in tumours of astrocytic lineage.

F S Pardo, D W Hsu, R Zeheb, J T Efird, P G Okunieff, D M Malkin

Open access · hybridAbstract readComparative Study
In one paragraph

Article in British journal of cancer, 2004. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed, 1 pooled it
1.1field-weighted citation impact, top 23% 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

19 citing papers in PubMed, 1 synthesis or guideline pooled it, 44 citations in OpenAlex.

  1. Pooled it
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  3. p53/Cancers · 2023
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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

6 authors at 6 institutions in 2 countries.

F S PardoDivision of Radiation Oncology, Radiation and Cellular Biology Laboratory, Department of Radiology, University of California, San Diego, CA, USA. fpardo@ucsd.edu
D W Hsu
R Zeheb
J T Efird
P G Okunieff
D M Malkin
Addgene · USHospital for Sick Children · CAMassachusetts General Hospital · USStanford University · USUniversity of California, San Diego · USUniversity of Rochester · US

Funding

MODIFICATION OF TUMOR RESPONSE TO LOCAL IRRADIATIONR01CA013311 · NCI · MASSACHUSETTS GENERAL HOSPITAL · PI LOEFFLER, JAY S · 1985 to 1990
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MODIFICATION OF TUMOR RESPONSE TO LOCAL IRRADIATIONR37CA013311 · NCI · MASSACHUSETTS GENERAL HOSPITAL · PI SUIT, HERMAN D. · 1991 to 1998
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NCI NIH HHS CA-13311
6 · The paper itself

Abstract

Abnormalities of the p53 tumor-suppressor gene are found in a significant proportion of astrocytic brain tumours. We studied tumour specimens from 74 patients evaluated over 20 years at the Massachusetts General Hospital, where clinical outcome could be determined and sufficient pathologic material was available for immunostaining. p53 expression studies employed an affinity-purified p53 monoclonal antibody, whose specificity was verified in absorption studies and, in a minority of cases, a second antibody recognising a different epitope of p53. Significant overexpression of p53 protein was found in 48% of the 74 tumours included in this series and high levels of expression were associated with higher mortality from astrocytic tumours (P<0.001, log rank). Multivariate analyses revealed that immunohistochemically detected p53 was an independent marker of shortened progression-free and overall actuarial survival in patients with astrocytic tumours, suggesting that increased expression of p53 plays an important role in the pathobiology of these tumours. In a subset of 36 cases, coding regions of the p53 gene were completely sequenced via SSCP and direct DNA sequencing, revealing that overexpression of p53 protein is not always associated with point mutations in conserved exons of the p53 gene. Finally, we confirmed p53 protein expression in early-passage human glioma cell lines of known p53 mutational status and immunostaining scores. Although grade continues to be the strongest prognostic variable, the use of p53 staining as a prognostic indicator, in contrast to mutational DNA analyses, may be a useful adjunct in identifying patients at higher risk of treatment failure.

Indexed as

AstrocytomaCell LineageDisease-Free SurvivalDisease ProgressionDNA Mutational AnalysisDNA, NeoplasmFemaleHumansImmunoenzyme TechniquesMaleMassachusettsMiddle AgedPoint MutationPolymerase Chain ReactionPolymorphism, Single-Stranded ConformationalPrognosisDNA, NeoplasmTumor Suppressor Protein p53

Identifiers

PMID15494720
PMCPMC2409947
OpenAlexW2084065248

What OpenQuestion holds

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LicenceCC BY
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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.