Evidence map›Paper›PMID 26486986›Full record

ArticleBMC cancer2015

Reduced toxicity in the treatment of locally advanced rectal cancer: a comparison of volumetric modulated arc therapy and 3D conformal radiotherapy.

Leif Hendrik Dröge, Hanne Elisabeth Weber, Manuel Guhlich, Martin Leu, Lena-Christin Conradi, Jochen Gaedcke, Steffen Hennies, Markus Karl Herrmann, Margret Rave-Fränk, Hendrik Andreas Wolff

Abstract read
In one paragraph

Article in BMC cancer, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
31citing papers in PubMed, 2 pooled it
–field-weighted citation impact
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

31 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Pooled it
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  6. Treatment of non-small cell lung cancer: advances following the introduction of PET-CT and IMRT/VMAT.Strahlentherapie und Onkologie : Organ der Deutschen Rontgengesellschaft ... [et al] · 2025
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  10. Patient-reported outcomes after treatment for rectal cancer-A prospective nationwide study.Colorectal disease : the official journal of the Association of Coloproctology of Great Britain and Ireland · 2024
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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

10 authors.

Leif Hendrik DrögeDepartment of Radiotherapy and Radiation Oncology, University Medical Center Göttingen, Robert-Koch-Straße 40, 37075, Göttingen, Germany. hendrik.droege@med.uni-goettingen.de.
Hanne Elisabeth WeberDepartment of Radiotherapy and Radiation Oncology, University Medical Center Göttingen, Robert-Koch-Straße 40, 37075, Göttingen, Germany. hanne.weber@med.uni-goettingen.de.
Manuel GuhlichDepartment of Radiotherapy and Radiation Oncology, University Medical Center Göttingen, Robert-Koch-Straße 40, 37075, Göttingen, Germany. manuel.guhlich@med.uni-goettingen.de.
Martin LeuDepartment of Radiotherapy and Radiation Oncology, University Medical Center Göttingen, Robert-Koch-Straße 40, 37075, Göttingen, Germany. martin.leu@med.uni-goettingen.de.
Lena-Christin ConradiDepartment of General, Visceral and Pediatric Surgery, University Medical Center Göttingen, Göttingen, Germany. lena.conradi@med.uni-goettingen.de.
Jochen GaedckeDepartment of General, Visceral and Pediatric Surgery, University Medical Center Göttingen, Göttingen, Germany. jochen.gaedcke@med.uni-goettingen.de.
Steffen HenniesDepartment of Radiotherapy and Radiation Oncology, University Medical Center Göttingen, Robert-Koch-Straße 40, 37075, Göttingen, Germany. steffen.hennies@med.uni-goettingen.de.
Markus Karl HerrmannDepartment of Radiotherapy and Radiation Oncology, University Medical Center Göttingen, Robert-Koch-Straße 40, 37075, Göttingen, Germany. markusherrmann@gmx.net.
Margret Rave-FränkDepartment of Radiotherapy and Radiation Oncology, University Medical Center Göttingen, Robert-Koch-Straße 40, 37075, Göttingen, Germany. mfraenk@med.uni-goettingen.de.
Hendrik Andreas WolffDepartment of Radiotherapy and Radiation Oncology, University Medical Center Göttingen, Robert-Koch-Straße 40, 37075, Göttingen, Germany. drhawolff@googlemail.com.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundExcellent dosimetric characteristics were demonstrated for volumetric modulated arc therapy (VMAT) in preoperative chemoradiotherapy (CRT) for locally advanced rectal cancer (LARC). In a single-center retrospective analysis, we tested whether these advantages may translate into significant clinical benefits. We compared VMAT to conventional 3D conformal radiotherapy (3DCRT) in patients, homogeneously treated according to the control arm of the CAO/ARO/AIO-04 trial.

methodsCRT consisted of pelvic irradiation with 50.4/1.8Gy by VMAT (n = 81) or 3DCRT (n = 107) and two cycles of 5-fluorouracil. Standardized total mesorectal excision surgery was performed within 4-6 weeks. The tumor regression grading (TRG) was assessed by the Dworak score. Acute and late toxicity were evaluated via the Common Terminology Criteria for Adverse Events and the Late effects of normal tissues scale, respectively. Side effects greater than or equal to grade 3 were considered high-grade.

resultsMedian follow-up was 18.3 months in the VMAT group and 61.5 months in the 3DCRT group with no differences in TRG between them (p = 0.1727). VMAT treatment substantially reduced high-grade acute and late toxicity, with 5 % versus 20 % (p = 0.0081) and 6 % vs. 22 % (p = 0.0039), respectively. With regard to specific organs, differences were found in skin reaction (p = 0.019) and proctitis (p = 0.0153).

conclusionsVMAT treatment in preoperative CRT for LARC showed the potential to substantially reduce high-grade acute and late toxicity. Importantly, we could demonstrate that VMAT irradiation did not impair short-term oncological results. We conclude, that the reduced toxicity after VMAT irradiation may pave the way for more efficient systemic therapies, and hopefully improved patient survival in the multimodal treatment of LARC.

Indexed as

Radiotherapy, ConformalRadiotherapy, Intensity-ModulatedAdultAgedAged, 80 and overCombined Modality TherapyFemaleHumansKaplan-Meier EstimateMaleMiddle AgedNeoplasm StagingPreoperative CareRectal NeoplasmsRetrospective StudiesTreatment Outcome

Identifiers

PMID26486986
PMCPMC4617910

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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.