Evidence map›Paper›PMID 34664141›Full record

ArticleAnnals of surgical oncology2022

Carbon Ion Radiotherapy for Locally Recurrent Rectal Cancer of Patients with Prior Pelvic Irradiation.

Shigeru Yamada, Hirotoshi Takiyama, Yuka Isozaki, Makoto Shinoto, Daniel K Ebner, Masashi Koto, Hiroshi Tsuji, Hideaki Miyauchi, Mitsugu Sekimoto, Hideki Ueno and 4 more

Open access · hybridAbstract read
In one paragraph

Article in Annals of surgical oncology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed, 3 pooled it
2.2field-weighted citation impact, top 9% 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

21 citing papers in PubMed, 3 syntheses or guidelines pooled it, 34 citations in OpenAlex.

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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

14 authors at 6 institutions in 1 country.

Shigeru YamadaQST Hospital, National Institutes for Quantum and Radiological Science and Technology, Chiba, Japan. yamada.shigeru@qst.go.jp.
Hirotoshi TakiyamaQST Hospital, National Institutes for Quantum and Radiological Science and Technology, Chiba, Japan.
Yuka IsozakiQST Hospital, National Institutes for Quantum and Radiological Science and Technology, Chiba, Japan.
Makoto ShinotoQST Hospital, National Institutes for Quantum and Radiological Science and Technology, Chiba, Japan.
Daniel K EbnerQST Hospital, National Institutes for Quantum and Radiological Science and Technology, Chiba, Japan.
Masashi KotoQST Hospital, National Institutes for Quantum and Radiological Science and Technology, Chiba, Japan.
Hiroshi TsujiQST Hospital, National Institutes for Quantum and Radiological Science and Technology, Chiba, Japan.
Hideaki MiyauchiGraduate School of Medicine, Chiba University, Chiba, Japan.
Mitsugu SekimotoKansai Medical University Hospital, Osaka, Japan.
Hideki UenoNational Defense Medical College, Saitama, Japan.
Michio ItabashiTokyo Womens Medical University, Tokyo, Japan.
Masataka IkedaHyogo College of Medicine, Hyogo, Japan.
Hisahiro MatsubaraGraduate School of Medicine, Chiba University, Chiba, Japan.
Working Group on Locally Recurrent Rectal Cancer
National Institutes for Quantum and Radiological Science and Technology · JPChiba University · JPHyogo Medical University · JPKansai Medical University · JPNational Defense Medical College · JPTokyo Women's Medical University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThis study aimed to assess the safety and efficacy of carbon-ion radiotherapy (CIRT) for salvage of previously X-ray-irradiated (XRT) locally recurrent rectal cancer (LRRC).

methodsBetween September 2005 and December 2017, 77 patients with LRRC were treated with CIRT re-irradiation. All the patients had received prior XRT with a median dose of 50.0 Gy (range 20-74 Gy), principally for neoadjuvant or adjuvant recurrence prophylaxis in 34 patients and for recurrence in 43 patients. The total CIRT dose of 70.4 Gy (RBE) (gray relative biologic effectiveness) was administered in 16 fixed fractions during 4 weeks (4.4 Gy [RBE] per fraction).

resultsAll the patients completed the scheduled treatment course. None of the patients received resection after CIRT. Acute grade 3 toxicities occurred for eight patients (10 %), including five grade 3 pelvic infections (2 involving pain and 1 involving neuropathy). Late grade 3 toxicities occurred for 16 patients (21 %): 13 with late grade 3 pelvic infections, 9 with gastrointestinal toxicity, 1 with skin toxicity, 2 with pain, and 4 with neuropathy. No grade 4+ toxicity was noted. The overall local control rates (infield + out-of-field recurrence) were 69 % at 3 years and 62 % at 5 years. In the planning target volume (PTV), the infield recurrence rates were 90 % and 87 % respectively. The control rates for regional recurrence were 85 % at 3 years and 81 % at 5 years. The median overall survival time was 47 months. The survival rates were 61 % at 3 years and 38 % at 5 years.

conclusionCarbon-ion re-irradiation of previously X-ray-irradiated locally recurrent rectal cancer appears to be safe and effective, providing good local control and survival advantage without unacceptable morbidity.

Indexed as

Heavy Ion RadiotherapyRectal NeoplasmsHumans

Identifiers

PMID34664141
PMCPMC8677685
OpenAlexW3207294668

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LicenceCC BY
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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.