Evidence map›Paper›PMID 29976494›Full record

ArticleInternational journal of radiation oncology, biology, physics2018

Proton Stereotactic Radiosurgery for Brain Metastases: A Single-Institution Analysis of 370 Patients.

Katelyn M Atkins, Itai M Pashtan, Marc R Bussière, Kylie H Kang, Andrzej Niemierko, Jillian E Daly, Thomas M Botticello, Molly C Hurd, Paul H Chapman, Kevin Oh and 2 more

Abstract read
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In one paragraph

Article in International journal of radiation oncology, biology, physics, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
26citing 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

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

  1. Guideline
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  8. Article
  9. Article
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  11. Neurotoxicity from Old and New Radiation Treatments for Brain Tumors.International journal of molecular sciences · 2023
    Review
  12. Review
  13. Review
  14. Article
  15. Evaluation of improvements in plan quality with Photon Optimizer v16.1 for single brain lesion SRS treatment.Reports of practical oncology and radiotherapy : journal of Greatpoland Cancer Center in Poznan and Polish Society of Radiation Oncology · 2023
    Article
  16. It is beneficial to invest resources to implement proton intracranial SRS.Journal of applied clinical medical physics · 2022
    Article
  17. Article
  18. Novel treatments in optic pathway gliomas.Frontiers in ophthalmology · 2022
    Review
  19. Article
  20. Special stereotactic radiotherapy techniques: procedures and equipment for treatment simulation and dose delivery.Reports of practical oncology and radiotherapy : journal of Greatpoland Cancer Center in Poznan and Polish Society of Radiation Oncology · 2022
    Review
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

12 authors.

Katelyn M AtkinsHarvard Radiation Oncology Program, Massachusetts General Hospital, Boston, Massachusetts.
Itai M PashtanDepartment of Radiation Oncology, Dana-Farber Cancer Institute and Brigham and Women's Hospital, South Shore Hospital, South Weymouth Massachusetts.
Marc R BussièreDepartment of Radiation Oncology and Francis H. Burr Proton Therapy Center, Massachusetts General Hospital, Boston, Massachusetts.
Kylie H KangSchool of Medicine, Case Western Reserve University, Cleveland, Ohio.
Andrzej NiemierkoDivision of Biostatistics, Department of Radiation Oncology, Massachusetts General Hospital, Boston, Massachusetts.
Jillian E DalyDepartment of Radiation Oncology and Francis H. Burr Proton Therapy Center, Massachusetts General Hospital, Boston, Massachusetts.
Thomas M BotticelloDepartment of Radiation Oncology and Francis H. Burr Proton Therapy Center, Massachusetts General Hospital, Boston, Massachusetts.
Molly C HurdUniversity of Vermont, Burlington, Vermont.
Paul H ChapmanDepartment of Neurosurgery, Massachusetts General Hospital, Boston, Massachusetts.
Kevin OhDepartment of Radiation Oncology and Francis H. Burr Proton Therapy Center, Massachusetts General Hospital, Boston, Massachusetts.
Jay S LoefflerDepartment of Radiation Oncology and Francis H. Burr Proton Therapy Center, Massachusetts General Hospital, Boston, Massachusetts.
Helen A ShihDepartment of Radiation Oncology and Francis H. Burr Proton Therapy Center, Massachusetts General Hospital, Boston, Massachusetts. Electronic address: hshih@mgh.harvard.edu.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTo report the first series of proton stereotactic radiosurgery (SRS) for the treatment of patients with single or multiple brain metastases, including failure patterns, survival outcomes, and toxicity analysis. METHODS AND MATERIALS: This was a single-institution, retrospective study of 815 metastases from 370 patients treated with proton SRS between April 1991 and November 2016. Cumulative incidence estimates of local failure, distant brain failure, and pathologically confirmed radionecrosis and Kaplan-Meier estimates of overall survival were calculated. Fine and Gray and Cox regressions were performed to ascertain whether clinical and treatment factors were associated with the described endpoints.

resultsThe median follow-up from proton SRS was 9.2 months. The 6- and 12-month estimates of local failure, distant brain failure, and overall survival were 4.3% (95% confidence interval [CI] 3.0%-5.9%) and 8.5% (95% CI 6.7%-10.6%), 39.1% (95% CI 34.1%-44.0%) and 48.2% (95% CI 43.0%-53.2%), and 76.0% (95% CI 71.3%-80.0%) and 51.5% (95% CI 46.3%-56.5%), respectively. The median survival was 12.4 months (95% CI 10.8-14.0 months) after proton SRS. The most common symptoms were low-grade fatigue (12.5%), headache (10.0%), motor weakness (6.2%), seizure (5.8%), and dizziness (5.4%). The rate of pathologically confirmed radionecrosis at 12 months was 3.6% (95% CI 2.0%-5.8%), and only target volume was associated on multivariate analysis (subdistribution hazard ratio 1.13, 95% CI 1.0-1.20).

conclusionsTo the best of our knowledge, this is the first reported series of proton SRS for the management of brain metastases. Moderate-dose proton SRS is well tolerated and can achieve good local control outcomes, comparable to those obtained with conventional photon SRS strategies. Although proton SRS remains resource-intensive, future strategies evaluating its selective utility in patients who would benefit most from integral dose reduction should be explored.

Indexed as

AdultAgedAged, 80 and overBrainBrain NeoplasmsFemaleFollow-Up StudiesHumansKaplan-Meier EstimateMaleMiddle AgedMultivariate AnalysisNecrosisProportional Hazards ModelsProton TherapyRadiation Injuries

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.