Evidence map›Paper›PMID 30043227›Full record

SynthesisJournal of gastrointestinal cancer2018

Neoadjuvant Radiotherapy Versus No Radiotherapy for Stage IV Rectal Cancer: a Systematic Review and Meta-analysis.

Ryan Anthony F Agas, Lester Bryan A Co, J C Kennetth M Jacinto, Kelvin Ken L Yu, Paolo G Sogono, Warren R Bacorro, Teresa T Sy Ortin

Abstract readComparative StudyMeta-AnalysisSystematic Review
PubMed Publisher
In one paragraph

Synthesis in Journal of gastrointestinal cancer, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed, 3 pooled it
0.8field-weighted citation impact, top 25% 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

5 citing papers in PubMed, 3 syntheses or guidelines pooled it, 14 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Article
  5. Optimizing the Personalized Care for the Management of Rectal Cancer: A Consensus Statement.The Turkish journal of gastroenterology : the official journal of Turkish Society of Gastroenterology · 2022
    Article
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

7 authors at 1 institution in 1 country.

Ryan Anthony F AgasDepartment of Radiation Oncology, Benavides Cancer Institute, University of Santo Tomas Hospital, España Boulevard, 1008, Manila, Philippines. ryan19agas@yahoo.com.ph.ORCID http://orcid.org/0000-0002-3118-1962
Lester Bryan A CoDepartment of Radiation Oncology, Benavides Cancer Institute, University of Santo Tomas Hospital, España Boulevard, 1008, Manila, Philippines.
J C Kennetth M JacintoDepartment of Radiation Oncology, Benavides Cancer Institute, University of Santo Tomas Hospital, España Boulevard, 1008, Manila, Philippines.
Kelvin Ken L YuDepartment of Radiation Oncology, Benavides Cancer Institute, University of Santo Tomas Hospital, España Boulevard, 1008, Manila, Philippines.
Paolo G SogonoDepartment of Radiation Oncology, Benavides Cancer Institute, University of Santo Tomas Hospital, España Boulevard, 1008, Manila, Philippines.
Warren R BacorroDepartment of Radiation Oncology, Benavides Cancer Institute, University of Santo Tomas Hospital, España Boulevard, 1008, Manila, Philippines.
Teresa T Sy OrtinDepartment of Radiation Oncology, Benavides Cancer Institute, University of Santo Tomas Hospital, España Boulevard, 1008, Manila, Philippines.
University of Santo Tomas Hospital · PH

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeThe aim of this study is to review the contemporary evidence comparing neoadjuvant radiotherapy (NRT) versus no radiotherapy (no RT) in patients with stage IV rectal cancer.

methodsLiterature was searched for studies using the following databases: Pubmed, EMBASE, Science Direct, Scopus, ASCOpubs, the Cochrane Library, and Google Scholar. Studies reporting outcomes for stage IV rectal cancer patients who underwent NRT or no RT were selected.

resultsA total of eight studies were included in this review (one RCT, five retrospective cohorts, two population-based studies). The only RCT in this review reported no significant difference in 2- and 5-year local recurrence (NRT versus no RT) 10.1% versus 23.8%, and 15.9% versus 26.9%, respectively. However, multivariate analysis showed the effect of treatment might not have differed between subgroups according to stage. Pooled analysis from five retrospective studies showed significantly improved local recurrence-free survival (LRFS) with NRT (risk ratio [RR] 1.15; 95% CI 1.01-1.31, p = 0.03), which was maintained in the subgroup who underwent metastasectomy. (RR 1.18; 95% CI 1.01-1.37, p = 0.04). Pooled 5-year overall survival (OS) showed a statistically significant benefit with NRT (RR 1.47; 95% CI 1.14-1.89, p = 0.003), which was not seen in the subgroup who underwent metastasectomy (RR 1.31; 95% CI 0.94-1.82, p = 0.11).

conclusionThe current available evidence shows an LRFS benefit with NRT over no RT in patients with stage IV rectal cancer. The review also suggests a possible OS benefit with NRT, although this finding should be interpreted with caution.

Indexed as

Disease-Free SurvivalHumansNeoadjuvant TherapyNeoplasm Recurrence, LocalNeoplasm StagingProctectomyRectal NeoplasmsRectumTreatment OutcomeMetastaticNeoadjuvantPreoperativeRadiotherapyRectal cancerStage IV

Identifiers

PMID30043227
OpenAlexW2883777667

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.