Evidence map›Paper›PMID 33562274›Full record

ArticleCancers2021

Feasibility and Safety of Repeated Carbon Ion Radiotherapy for Locally Advanced Unresectable Pancreatic Cancer.

Masahiko Okamoto, Shintaro Shiba, Shohei Okazaki, Yuhei Miyasaka, Kei Shibuya, Hiroki Kiyohara, Tatsuya Ohno

Open access · goldAbstract read
In one paragraph

Article in Cancers, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed
0.7field-weighted citation impact, top 28% 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

10 citing papers in PubMed, 14 citations in OpenAlex.

  1. Article
  2. Review
  3. Carbon ion radiotherapy optimization techniques for pancreatic cancer: accounting for the effect of bowel gas variation.Strahlentherapie und Onkologie : Organ der Deutschen Rontgengesellschaft ... [et al] · 2026
    Article
  4. Article
  5. Article
  6. Review
  7. Article
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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

7 authors at 2 institutions in 1 country.

Masahiko OkamotoGunma University Heavy-ion Medical Center, Gunma University Graduate School of Medicine, Gunma 371-0811, Japan.ORCID 0000-0002-8787-3298
Shintaro ShibaGunma University Heavy-ion Medical Center, Gunma University Graduate School of Medicine, Gunma 371-0811, Japan.
Shohei OkazakiGunma University Heavy-ion Medical Center, Gunma University Graduate School of Medicine, Gunma 371-0811, Japan.ORCID 0000-0001-6984-8454
Yuhei MiyasakaGunma University Heavy-ion Medical Center, Gunma University Graduate School of Medicine, Gunma 371-0811, Japan.ORCID 0000-0001-5137-1862
Kei ShibuyaGunma University Heavy-ion Medical Center, Gunma University Graduate School of Medicine, Gunma 371-0811, Japan.
Hiroki KiyoharaJapanese Red Cross Maebashi Hospital, Gunma 371-0811, Japan.
Tatsuya OhnoGunma University Heavy-ion Medical Center, Gunma University Graduate School of Medicine, Gunma 371-0811, Japan.ORCID 0000-0002-6703-3144
Gunma University · JPMaebashi Red Cross Hospital · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeThe feasibility and safety of re-irradiation with carbon ion beams for locally recurrent unresectable pancreatic cancer (URPC) after carbon ion radiotherapy (CIRT) was evaluated.

methodsMedical records from patients with re-irradiated URPC who were treated with CIRT between November 2017 and February 2019 were reviewed. Inclusion criteria were (1) isolated local recurrence after CIRT, (2) URPC, and (3) tumor located at least 3 mm from the gastrointestinal tract. The first and second CIRT irradiation doses were 55.2 Gy (relative biological effectiveness) in 12 fractions.

resultsTen patients met the inclusion criteria. The median follow-up period was 25.5 months (range, 16.0-69.1) after the first CIRT and 8.9 months (range, 6.4-18.9) after the second CIRT. The median interval between the initial CIRT and the local recurrence was 15.8 months (range, 8.0-50.1). One patient developed grade 3 diarrhea immediately after the second CIRT; no other grade 3 or higher adverse events were attributed to CIRT. The estimated 1-year overall survival, local control, and progression-free survival rates after the second CIRT were 48%, 67%, and 34%, respectively.

conclusionRepeated CIRT is feasible with acceptable toxicity for selected patients with locally advanced URPC after CIRT.

Indexed as

carbon ion radiotherapylocally advanced pancreatic cancerlocal recurrencepancreatic cancerre-irradiation

Identifiers

PMID33562274
PMCPMC7914638
OpenAlexW3126522060

What OpenQuestion holds

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LicenceCC BY
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.