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ArticleStrahlentherapie und Onkologie : Organ der Deutschen Rontgengesellschaft ... [et al]2017

Reirradiation for recurrent head and neck cancers using charged particle or photon radiotherapy.

Hideya Yamazaki, Yusuke Demizu, Tomoaki Okimoto, Mikio Ogita, Kengo Himei, Satoaki Nakamura, Gen Suzuki, Ken Yoshida, Tadayuki Kotsuma, Yasuo Yoshioka and 1 more

Abstract readComparative Study
PubMed Publisher
In one paragraph

Article in Strahlentherapie und Onkologie : Organ der Deutschen Rontgengesellschaft ... [et al], 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
–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

12 citing papers in PubMed.

  1. Review
  2. Article
  3. Review
  4. Article
  5. Article
  6. Article
  7. Review
  8. Article
  9. Review
  10. Clinical safety and efficacy of salvage reirradiation for upper abdominal malignancies.Strahlentherapie und Onkologie : Organ der Deutschen Rontgengesellschaft ... [et al] · 2019
    Article
  11. Article
  12. Repeat reirradiation of the spinal cord: multi-national expert treatment recommendations.Strahlentherapie und Onkologie : Organ der Deutschen Rontgengesellschaft ... [et al] · 2018
    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

11 authors.

Hideya YamazakiDepartment of Radiology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 465 Kajiicho Kawaramachi Hirokoji, 602-8566, Kamigyo-ku, Kyoto, Japan. hideya10@hotmail.com.
Yusuke DemizuDepartment of Radiology, Hyogo Ion Beam Medical Center, 1-2-1 Kouto, Shingu-cho, 679-5165, Tatsuno, Hyogo, Japan.
Tomoaki OkimotoDepartment of Radiology, Hyogo Ion Beam Medical Center, 1-2-1 Kouto, Shingu-cho, 679-5165, Tatsuno, Hyogo, Japan.
Mikio OgitaRadiotherapy Department, Fujimoto Hayasuzu Hospital, Hayasuzu 17-1, 885-0055, Miyakonojo, Miyazaki, Japan.
Kengo HimeiDepartment of Radiology, Japanese Red Cross Okayama Hospital, Aoe 2‑1-1, Kita-ku, 700-8607, Okayama, Okayama, Japan.
Satoaki NakamuraDepartment of Radiology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 465 Kajiicho Kawaramachi Hirokoji, 602-8566, Kamigyo-ku, Kyoto, Japan.
Gen SuzukiDepartment of Radiology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 465 Kajiicho Kawaramachi Hirokoji, 602-8566, Kamigyo-ku, Kyoto, Japan.
Ken YoshidaDepartment of Radiation Oncology, National Hospital Organization Osaka National Hospital, 2-1-14, Hoenzaka, Chuo-ku, 540-0006, Osaka, Osaka, Japan.
Tadayuki KotsumaDepartment of Radiation Oncology, National Hospital Organization Osaka National Hospital, 2-1-14, Hoenzaka, Chuo-ku, 540-0006, Osaka, Osaka, Japan.
Yasuo YoshiokaDepartment of Radiation Oncology, Osaka University Graduate School of Medicine, 565-0871, Suita, Osaka, Japan.
Ryoongjin OhMiyakojima IGRT Clinic, 534-0021, Osaka, Japan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveTo examine the outcomes of reirradiation for recurrent head and neck cancers using different modalities.

methodsThis retrospective study included 26 patients who received charged particle radiotherapy (CP) and 150 who received photon radiotherapy (117 CyberKnife radiotherapy [CK] and 36 intensity-modulated radiotherapy [IMRT]). Inverse probability of treatment weighting (IPTW) involving propensity scores was used to reduce background selection bias.

resultsHigher prescribed doses were used in CP than photon radiotherapy. The 1‑year overall survival (OS) rates were 67.9% for CP and 54.1% for photon radiotherapy (p = 0.15; 55% for CK and 51% for IMRT). In multivariate Cox regression, the significant prognostic factors for better survival were nasopharyngeal cancer, higher prescribed dose, and lower tumor volume. IPTW showed a statistically significant difference between CP and photon radiotherapy (p = 0.04). The local control rates for patients treated with CP and photon radiotherapy at 1 year were 66.9% (range 46.3-87.5%) and 67.1% (range 58.3-75.9%), respectively. A total of 48 patients (27%) experienced toxicity grade ≥3 (24% in the photon radiotherapy group and 46% in the CP group), including 17 patients with grade 5 toxicity. Multivariate analysis revealed that younger age and a larger planning target volume (PTV) were significant risk factors for grade 3 or worse toxicity.

conclusionCP provided superior survival outcome compared to photon radiotherapy. Tumor volume, primary site (nasopharyngeal), and prescribed dose were identified as survival factors. Younger patients with a larger PTV experienced toxicity grade ≥3.

Indexed as

RadiosurgeryRadiotherapy, Intensity-ModulatedRe-IrradiationAdultAgedAged, 80 and overFemaleHeavy Ion RadiotherapyHumansMaleMiddle AgedNeoplasm Recurrence, LocalOtorhinolaryngologic NeoplasmsPhotonsProportional Hazards ModelsRadiation InjuriesCharged particle radiotherapyHead and neck neoplasmsIntensity-modulated radiotherapyReirradiationStereotactic radiotherapy

Identifiers

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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.