SuPr Study (Supine Versus Prone Treatment Position in Breast Radiotherapy) (SuPr)
A Randomised Trial Investigating the Prone Treatment Position as a Method of Sparing Healthy Tissues in Women Prescribed Breast Radiotherapy (SuPr Study)
Studieoversigt
Status
Status
Betingelser
Betingelser
Intervention / Behandling
Intervention / Behandling
Detaljeret beskrivelse
Undersøgelsestype
Undersøgelsestype
Tilmelding (Faktiske)
Tilmelding
Fase
Fase
- Fase 3
Kontakter og lokationer
Studiesteder
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Surrey
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Sutton, Surrey, Det Forenede Kongerige, SM2 5PT
- Royal Marsden NHS Foundation Trust
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Deltagelseskriterier
Berettigelseskriterier
Berettigelseskriterier
Aldre berettiget til at studere
Tager imod sunde frivillige
Køn, der er berettiget til at studere
Beskrivelse
Inclusion Criteria:
- Complete microscopic excision of early stage invasive ductal or lobular carcinoma (pT1-3b N0-1 M0) with breast preservation.
- Paired titanium clips marking anterior, posterior, and radial walls of excision cavity
- Breast cup size C or above
- Recommendation for whole breast radiotherapy
- No requirement for nodal irradiation
- Ability to lie prone on breast board
- For left-sided breast cancer patients, cardiac and LAD doses must be ≤10% greater than those predicted for the supine position.
- For all patients, the following absolute dose constraints should be met: ≤5% of heart volume to receive 18Gy and ≤10% of ipsilateral lung volume to receive ≥20Gy
- Age ≥18
- PS ≤1
- No previous radiotherapy to the affected breast
- No concomitant herceptin
- Absence of any psychological, familial, sociological or geographical condition potentially hampering compliance with the study protocol and follow-up schedule.
- Written informed consent given according to ICH/GCP before registration/ randomisation.
- Patients can only be randomised into this trial once.
Studieplan
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
- Primært formål: Behandling
- Tildeling: Randomiseret
- Interventionel model: Parallel tildeling
- Maskning: Ingen (Åben etiket)
Antal våben
Våben og indgreb
Deltagergruppe / ArmDeltagergruppe / Arm |
Intervention / BehandlingIntervention / Behandling |
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Aktiv komparator: Prone Position
Patients will lie on their fronts on an in-house designed board comprising an arm positioning device registerable to the couch-top, together with a styrofoam/ memory foam mattress.
The ipsilateral breast will drop through an aperture in the mattress.
The distance from the nipple to the superior, inferior and lateral aspects of the aperture will be recorded along with the distance of the nipple from the couch-top.
Arms will be extended as far as possible above the head and the position of the arm immobilisation handles recorded.
The head will be turned to the contralateral side.
The contralateral breast will be pulled laterally such that it is as flat as possible beneath the patient.
Measurements will be taken in order to relate the position of the bi-lateral tattoos to the orthogonal lasers.
A fourth tattoo will be marked on the patient's back in line with the A-P laser.
The position will be reproduced at treatment using measurements from the tattoo to the laser.
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Aktiv komparator: Supine position
For the supine position, patients will be positioned on a customized supine breast board co-registerable to the couch-top to CT and the treatment machines.
Arms will be placed above the head in supports.
Arm and head position will be recorded along with the angle of the board (which is adjusted such that the sternum is parallel to the couch-top).
Tattoos will be marked bi-laterally and medially in a defined relationship to orthogonal lasers.
The position will be reproduced at treatment using the above measurements, tattoos and lasers.
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Hvad måler undersøgelsen?
Primære resultatmål
Primære resultatmål
Resultatmål |
Tidsramme |
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Interfraction reproducibility of tumour bed position (Reproducibility of tumour bed position in supine versus prone positions compared using the difference in mean daily displacement in tumour bed centre of gravity over a course of radiotherapy in 3D).
Tidsramme: End of radiotherapy
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End of radiotherapy
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Samarbejdspartnere og efterforskere
Sponsor
Sponsor
Efterforskere
Efterforskere
- Ledende efterforsker: Professor John Yarnold, Royal Marsden NHS Foundation Trust
Datoer for undersøgelser
Studer store datoer
Studiestart
Studiestart
Primær færdiggørelse (Faktiske)
Primær færdiggørelse
Studieafslutning (Faktiske)
Studieafslutning
Datoer for studieregistrering
Først indsendt
Først indsendt
Først indsendt, der opfyldte QC-kriterier
Først indsendt, der opfyldte QC-kriterier
Først opslået (Skøn)
Først opslået
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Skøn)
Sidste opdatering sendt
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidst verificeret
Sidst verificeret
Mere information
Begreber relateret til denne undersøgelse
Yderligere relevante MeSH-vilkår
Andre undersøgelses-id-numre
Andre undersøgelses-id-numre
- CCR3131
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