Evidence map›Paper›PMID 32303236›Full record

ArticleRadiation oncology (London, England)2020

Brain metastases treated with hypofractionated stereotactic radiotherapy: 8 years experience after Cyberknife installation.

Laurence Mengue, Aurélie Bertaut, Louise Ngo Mbus, Mélanie Doré, Myriam Ayadi, Karen Clément-Colmou, Line Claude, Christian Carrie, Cécile Laude, Ronan Tanguy and 2 more

Open access · goldAbstract read
In one paragraph

Article in Radiation oncology (London, England), 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed, 3 pooled it
3.9field-weighted citation impact, top 6% 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

25 citing papers in PubMed, 3 syntheses or guidelines pooled it, 42 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Radionecrosis risk and local control after CyberKnifeRadiation oncology (London, England) · 2026
    Article
  5. Review
  6. Article
  7. Review
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
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  15. Article
  16. Brachytherapy for central nervous system tumors.Journal of neuro-oncology · 2022
    Review
  17. Article
  18. Article
  19. Article
  20. Review
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

12 authors at 3 institutions in 1 country.

Laurence MengueDepartment of Radiotherapy, Léon Bérard Cancer Center, Lyon, France. laurence2mengue@gmail.com.
Aurélie BertautMethodology and Biostatistics Unit, Centre Georges François Leclerc, Dijon, France.
Louise Ngo MbusDepartment of Medecine, Hôpital d'Aurillac, Aurillac, France.
Mélanie DoréDepartment of Radiation Oncology, Institut de Cancérologie de l'Ouest, Nantes, France.
Myriam AyadiDepartment of Radiotherapy, Léon Bérard Cancer Center, Lyon, France.
Karen Clément-ColmouDepartment of Radiation Oncology, Institut de Cancérologie de l'Ouest, Nantes, France.
Line ClaudeDepartment of Radiotherapy, Léon Bérard Cancer Center, Lyon, France.
Christian CarrieDepartment of Radiotherapy, Léon Bérard Cancer Center, Lyon, France.
Cécile LaudeDepartment of Radiotherapy, Léon Bérard Cancer Center, Lyon, France.
Ronan TanguyDepartment of Radiotherapy, Léon Bérard Cancer Center, Lyon, France.
Julie BlancMethodology and Biostatistics Unit, Centre Georges François Leclerc, Dijon, France.
Marie-Pierre SunyachDepartment of Radiotherapy, Léon Bérard Cancer Center, Lyon, France.
Centre de Recherche en Cancérologie de Lyon · FRCentre Georges François Leclerc · FRInstitut de Cancérologie de l'Ouest · FR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundHypofractionated stereotactic radiotherapy (HFSRT) is indicated for large brain metastases (BM) or proximity to critical organs (brainstem, chiasm, optic nerves, hippocampus). The primary aim of this study was to assess factors influencing BM local control after HFSRT. Then the effect of surgery plus HFSRT was compared with exclusive HFSRT on oncologic outcomes, including overall survival. MATERIALS AND

methodsRetrospective study conducted in Léon Bérard Cancer Center, included patients over 18 years-old with BM, secondary to a tumor proven by histology and treated by HFSRT alone or after surgery. Three different dose-fractionation schedules were compared: 27 Gy (3 × 9 Gy), 30 Gy (5 × 6 Gy) and 35 Gy (5 × 7 Gy), prescribed on isodose 80%. Primary endpoint were local control (LC). Secondary endpoints were overall survival (OS) and radionecrosis (RN) rate.

resultsA total of 389 patients and 400 BM with regular MRI follow-up were analyzed. There was no statistical difference between the different dose-fractionations. On multivariate analysis, surgery (p = 0.049) and size (< 2.5 cm) (p = 0.01) were independent factors improving LC. The 12 months LC was 87.02% in the group Surgery plus HFSRT group vs 73.53% at 12 months in the group HFSRT. OS was 61.43% at 12 months in the group Surgery plus HFSRT group vs 50.13% at 12 months in the group HFSRT (p < 0.0085). Prior surgery (OR = 1.86; p = 0.0028) and sex (OR = 1.4; p = 0.0139) control of primary tumor (OR = 0.671, p = 0.0069) and KPS < 70 (OR = 0.769, p = 0.0094) were independently predictive of OS. The RN rate was 5% and all patients concerned were symptomatic.

conclusionsThis study suggests that HFSRT is an efficient and well-tolerated treatment. The optimal dose-fractionation remains difficult to determine. Smaller size and surgery are correlated to LC. These results evidence the importance of surgery for larger BM (> 2.5 cm) with a poorer prognosis. Multidisciplinary committees and prospective studies are necessary to validate these observations.

Indexed as

Radiation Dose HypofractionationAdolescentAdultAgedAged, 80 and overBrain NeoplasmsChildFemaleHumansMagnetic Resonance ImagingMaleMiddle AgedPrognosisRadiation InjuriesRadiosurgeryRetrospective StudiesBrain metastasesHypofractionated stereotactic radiotherapyRadionecrosis

Identifiers

PMID32303236
PMCPMC7164358
OpenAlexW3016428926

What OpenQuestion holds

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LicenceCC BY
Read underepoch 390

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.