Evidence map›Paper›PMID 25367179›Full record

SynthesisInternational journal of colorectal disease2015

Oncological outcomes of local excision compared with radical surgery after neoadjuvant chemoradiotherapy for rectal cancer: a systematic review and meta-analysis.

Irshad Shaikh, Alan Askari, Suzana Ourû, Janindra Warusavitarne, Thanos Athanasiou, Omar Faiz

Abstract readMeta-AnalysisSystematic Review
PubMed Publisher
In one paragraph

Synthesis in International journal of colorectal disease, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers, 5 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed, 5 pooled it
1.9field-weighted citation impact, top 14% 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

23 citing papers in PubMed, 5 syntheses or guidelines pooled it, 53 citations in OpenAlex.

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  5. Rectal Cancer, Version 2.2018, NCCN Clinical Practice Guidelines in Oncology.Journal of the National Comprehensive Cancer Network : JNCCN · 2018
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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 2 institutions in 1 country.

Irshad ShaikhSt Mark's Hospital, Imperial College London, Watford Road, Harrow, Middlesex, England, HA1 3UJ, UK, i.shaikh@doctors.org.uk.
Alan Askari
Suzana Ourû
Janindra Warusavitarne
Thanos Athanasiou
Omar Faiz
Imperial College London · GBSt Mark's Hospital · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundLow rectal cancer is conventionally managed with neoadjuvant chemoradiotherapy (CRT) followed by radical surgery (RS). In patients who refuse a stoma or are unfit for RS, an alternative approach may be the use of pre-op CRT and local excision (LE) where tumours are responsive. The aim of this systematic review is to determine whether differences exist in local recurrence (LR), overall survival (OS) and disease-free (DFS) survival between patients treated with CRT + LE and CRT + RS.

methodsA literature search was performed using MEDLINE/PubMed/Ovid databases and Google Scholar between 1946 and 2013. Studies comparing outcome following LE and RS post-CRT were included. A pooled analysis was carried out using the Mantel-Haenszel statistical (random effects) model to identify differences in LR, OS and DFS between CRT + LE and CRT + RS.

resultsEight studies were suitable for pooled analyses of LR whereas five and four studies were analysed for OS and DFS, respectively. When RS was used as the reference group, LR rate was higher in the LE group. However, this was non-significant (odds ratio (OR) 1.29, confidence interval (CI) 0.72-2.31, p = 0.40). Similarly, no difference was observed in 10-year OS (OR 0.96, CI 0.38-2.43, p = 0.93) or 5-year DFS (OR 1.04, CI 0.61-1.76, p = 0.89). There was evidence of publication bias in studies used for DFS. Subgroup analysis of above outcomes in T3/any N stage cancers showed no difference in LE versus RS.

conclusionIn the current evidence synthesis, there was no statistical difference in the LR, OS and DFS rates observed between patients treated with LE and RS for rectal cancer post-CRT. LE post-CRT may represent a viable alternative to RS for some patients wishing to avoid RS. However, further randomised studies are required to confirm these results.

Indexed as

ChemoradiotherapyNeoadjuvant TherapyDisease-Free SurvivalHumansNeoplasm Recurrence, LocalNeoplasm StagingRectal NeoplasmsSurvival Analysis

Identifiers

PMID25367179
OpenAlexW1980003909

What OpenQuestion holds

Textmetadata
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.