Evidence map›Paper›PMID 25573091›Full record

ArticleRadiation oncology (London, England)2015

Impact of head and neck cancer adaptive radiotherapy to spare the parotid glands and decrease the risk of xerostomia.

Joel Castelli, Antoine Simon, Guillaume Louvel, Olivier Henry, Enrique Chajon, Mohamed Nassef, Pascal Haigron, Guillaume Cazoulat, Juan David Ospina, Franck Jegoux and 2 more

Open access · goldAbstract read
In one paragraph

Article in Radiation oncology (London, England), 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 72 papers.

0numbers the graph read from it
0cells of the map it votes in
72citing papers in PubMed
13.3field-weighted citation impact, top 1% 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

72 citing papers in PubMed, 160 citations in OpenAlex.

  1. Trial
  2. A feasibility study on adaptiveStrahlentherapie und Onkologie : Organ der Deutschen Rontgengesellschaft ... [et al] · 2018
    Trial
  3. Trial
  4. Trial
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Review
  16. Article
  17. Article
  18. Article
  19. Review
  20. Review

12 more citing papers are in PubMed but not listed here.

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 5 institutions in 1 country.

Joel CastelliDepartment of Radiotherapy, Centre Eugene Marquis, Avenue de la bataille Flandre Dunkerque, F-35000, Rennes, France. j.castelli@rennes.unicancer.fr.
Antoine SimonRennes University 1, LTSI, Campus de Beaulieu, Rennes, F-35000, France. antoine.simon@univ-rennes1.fr.
Guillaume LouvelDepartment of Radiotherapy, Centre Eugene Marquis, Avenue de la bataille Flandre Dunkerque, F-35000, Rennes, France. g.louvel@rennes.unicancer.fr.
Olivier HenryDepartment of Radiotherapy, Centre Eugene Marquis, Avenue de la bataille Flandre Dunkerque, F-35000, Rennes, France. o.henry@rennes.unicancer.fr.
Enrique ChajonDepartment of Radiotherapy, Centre Eugene Marquis, Avenue de la bataille Flandre Dunkerque, F-35000, Rennes, France. e.chajon@rennes.unicancer.fr.
Mohamed NassefRennes University 1, LTSI, Campus de Beaulieu, Rennes, F-35000, France. mohamed.hatem.nassef@gmail.com.
Pascal HaigronRennes University 1, LTSI, Campus de Beaulieu, Rennes, F-35000, France. pascal.haigron@univ-rennes1.fr.
Guillaume CazoulatRennes University 1, LTSI, Campus de Beaulieu, Rennes, F-35000, France. guillaume.cazoulat@gmail.com.
Juan David OspinaRennes University 1, LTSI, Campus de Beaulieu, Rennes, F-35000, France. jdospina@gmail.com.
Franck JegouxCHU Pontchaillou, Rennes, F-35000, France. franck.jegoux@chu-rennes.fr.
Karen BenezeryCentre Antoine Lacassagne, Nice, F-06100, France. Karine.BENEZERY@nice.unicancer.fr.
Renaud de CrevoisierDepartment of Radiotherapy, Centre Eugene Marquis, Avenue de la bataille Flandre Dunkerque, F-35000, Rennes, France. r.de-crevoisier@rennes.unicancer.fr.
Université de Rennes · FRCentre Eugène Marquis · FRCentre Antoine Lacassagne · FRHôpital Pontchaillou · FRInserm · FR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundLarge anatomical variations occur during the course of intensity-modulated radiation therapy (IMRT) for locally advanced head and neck cancer (LAHNC). The risks are therefore a parotid glands (PG) overdose and a xerostomia increase. The purposes of the study were to estimate: - the PG overdose and the xerostomia risk increase during a "standard" IMRT (IMRTstd); - the benefits of an adaptive IMRT (ART) with weekly replanning to spare the PGs and limit the risk of xerostomia. MATERIAL AND

methodsFifteen patients received radical IMRT (70 Gy) for LAHNC. Weekly CTs were used to estimate the dose distributions delivered during the treatment, corresponding either to the initial planning (IMRTstd) or to weekly replanning (ART). PGs dose were recalculated at the fraction, from the weekly CTs. PG cumulated doses were then estimated using deformable image registration. The following PG doses were compared: pre-treatment planned dose, per-treatment IMRTstd and ART. The corresponding estimated risks of xerostomia were also compared. Correlations between anatomical markers and dose differences were searched.

resultsCompared to the initial planning, a PG overdose was observed during IMRTstd for 59% of the PGs, with an average increase of 3.7 Gy (10.0 Gy maximum) for the mean dose, and of 8.2% (23.9% maximum) for the risk of xerostomia. Compared to the initial planning, weekly replanning reduced the PG mean dose for all the patients (p<0.05). In the overirradiated PG group, weekly replanning reduced the mean dose by 5.1 Gy (12.2 Gy maximum) and the absolute risk of xerostomia by 11% (p<0.01) (30% maximum). The PG overdose and the dosimetric benefit of replanning increased with the tumor shrinkage and the neck thickness reduction (p<0.001).

conclusionDuring the course of LAHNC IMRT, around 60% of the PGs are overdosed of 4 Gy. Weekly replanning decreased the PG mean dose by 5 Gy, and therefore by 11% the xerostomia risk.

Indexed as

Organ Sparing TreatmentsParotid GlandAgedAged, 80 and overFemaleHead and Neck NeoplasmsHumansMaleMiddle AgedNeoplasm StagingPrognosisRadiometryRadiotherapy DosageRadiotherapy Planning, Computer-AssistedXerostomia

Identifiers

PMID25573091
PMCPMC4311461
OpenAlexW2126383576

What OpenQuestion holds

Textmetadata
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.