Evidence map›Paper›PMID 34821082›Full record

ArticleCancer medicine2022

Comparison of survival, acute toxicities, and dose-volume parameters between intensity-modulated radiotherapy with or without internal target volume delineation method and three-dimensional conformal radiotherapy in cervical cancer patients: A retrospective and propensity score-matched analysis.

Yu-Qin Liang, Sen-Quan Feng, Wen-Jia Xie, Qiong-Zhi Jiang, Yan-Fen Yang, Ren Luo, Elizabeth A Kidd, Tian-Tian Zhai, Liang-Xi Xie

Abstract readComparative Study
In one paragraph

Article in Cancer medicine, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed, 1 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

6 citing papers in PubMed, 1 synthesis or guideline pooled it.

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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

9 authors.

Yu-Qin LiangDepartment of Radiation Oncology, Xiang'an Hospital of Xiamen University, Xiamen, China.
Sen-Quan FengDepartment of Radiation Oncology, Cancer Hospital of Shantou University Medical College, Shantou, China.
Wen-Jia XieDepartment of Radiation Oncology, Xiang'an Hospital of Xiamen University, Xiamen, China.
Qiong-Zhi JiangDepartment of Radiation Oncology, Cancer Hospital of Shantou University Medical College, Shantou, China.
Yan-Fen YangDepartment of Science and Education, Xiang'an Hospital of Xiamen University, Xiamen, China.
Ren LuoDepartment of Radiation Oncology, Faculty of Medicine, University of Freiburg, Freiburg, Germany.
Elizabeth A KiddDepartment of Radiation Oncology, Stanford University, Stanford, California, USA.ORCID 0000-0003-4749-4098
Tian-Tian ZhaiDepartment of Radiation Oncology, Cancer Hospital of Shantou University Medical College, Shantou, China.
Liang-Xi XieDepartment of Radiation Oncology, Xiang'an Hospital of Xiamen University, Xiamen, China.ORCID 0000-0001-6966-6343

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundTo evaluate whether the use of the internal target volume (ITV) delineation method improves the performance of intensity-modulated radiotherapy (IMRT) and three-dimensional conformal radiotherapy (3DCRT) in terms of survival, acute toxicities, and dose-volume parameters.

methodsA total number of 477 cervical cancer patients who received concurrent chemoradiotherapy (CCRT) from January 2012 to December 2016 were retrospectively analyzed. They were divided into four groups: the non-ITV (N-ITV) + IMRT, ITV + IMRT, N-ITV + 3DCRT, and ITV + 3DCRT groups, with 76, 41, 327, and 33 patients, respectively. Survival analysis was performed with the Kaplan-Meier and the log-rank tests, and acute toxicity analysis was performed with the chi-squared test and the binary logistic regression test. Using the propensity score matching (PSM) method, 92 patients were matched among the four groups, and their dose-volume parameters were assessed with the Kruskal-Wallis method.

resultsThe median follow-up time was 49 months (1-119) for overall survival (OS). The 5-year OS rate was 66.4%. The ITV delineation method was an independent prognostic factor for OS (HR [95% CI]: 0.52 [0.27, 0.98], p = 0.044) and progression-free survival (PFS) (HR [95% CI]: 0.59 [0.36, 0.99], p = 0.045). The ITV + IMRT group had the lowest incidence rate (22%) and the N-ITV + IMRT group had the highest incidence rate of grade ≥3 hematological toxicity (HT) (46.1%) among the four groups. The pelvic bone marrow relative V10, V20, and V30 in the N-ITV + IMRT group was higher than those in the ITV + IMRT and N-ITV + 3DCRT groups (p < 0.05).

conclusionsThe use of ITV for IMRT treatment planning was associated with improved overall survival and progression-free survival, with lower HT rate.

Indexed as

AdultChemoradiotherapyFemaleFollow-Up StudiesHumansMiddle AgedPropensity ScoreRadiotherapy, ConformalRadiotherapy DosageRadiotherapy, Intensity-ModulatedRadiotherapy Planning, Computer-AssistedRetrospective StudiesSurvival AnalysisUterine Cervical Neoplasmscervical cancerhematological toxicityhigh-dose rate brachytherapyintensity-modulated radiotherapyinternal target volumepropensity score-matched analysis

Identifiers

PMID34821082
PMCPMC8704157

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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.