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Radiation Therapy in Women With Low Risk Early-Stage Breast Cancer Who Have Undergone Breast Conservation Surgery (IMPORT)

26. februar 2019 opdateret af: Institute of Cancer Research, United Kingdom

Randomised Trial Testing Intensity Modulated and Partial Organ Radiotherapy After Breast Conservation Surgery for Early Breast Cancer

RATIONALE: Radiation therapy uses high-energy x-rays to kill tumor cells. Giving radiation therapy after surgery may kill any tumor cells that remain after surgery. It is not yet known whether intensity-modulated radiation therapy is more effective than standard radiation therapy in treating patients with early-stage breast cancer.

PURPOSE: This randomized phase III trial is comparing radiation therapy regimens in treating women with early-stage breast cancer who have undergone breast-conservation surgery.

Studieoversigt

Status

Ukendt

Betingelser

Intervention / Behandling

Detaljeret beskrivelse

OBJECTIVES:

  • To test partial breast radiotherapy using intensity-modulated techniques following complete local tumor excision in women with low-risk, early stage breast cancer.

OUTLINE: This is a multicenter study.

Patients are stratified according to center (not participating in sub-studies vs participating in sub-studies). Patients are randomized to 1 of 3 treatment arms.

  • Arm I (control): Patients undergo standard whole breast radiotherapy once daily on days 1-5 (15 fractions) for 3 weeks.
  • Arm II: Patients undergo reduced whole breast radiotherapy (15 fractions) and standard partial breast radiotherapy (15 fractions) once daily on days 1-5 for 3 weeks.
  • Arm III: Patients undergo standard partial breast radiotherapy once daily on days 1-5 (15 fractions) for 3 weeks.

All patients complete a family history questionnaire at baseline. Patients also undergo blood sample collection at baseline and paraffin-embedded tissue collection at follow-up for molecular studies analyzing inter-patient variation by microarrays.

Patients in centers participating in sub-studies undergo quality of life and health economic assessment at baseline, 6 months, and 1, 2, and 5 years. These patients also undergo photographic assessment at baseline, 2 years, and 5 years.

After completion of study treatment, patients are followed for 10 years.

Undersøgelsestype

Interventionel

Tilmelding (Faktiske)

2018

Fase

  • Ikke anvendelig

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiesteder

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

50 år og ældre (Voksen, Ældre voksen)

Tager imod sunde frivillige

Ingen

Køn, der er berettiget til at studere

Kvinde

Beskrivelse

DISEASE CHARACTERISTICS:

  • Diagnosis of low-risk early stage breast cancer, meeting the following criteria:

    • Invasive adenocarcinoma

      • No invasive carcinoma of classical lobular type
      • lympho-vascular invasion present or absent
    • Tumor size pathologically determined to be ≤ 3.0 cm in diameter (pT1-2) (< 3.1 cm maximum microscopic diameter of invasive component)
    • Unifocal disease
    • Grade I, II, or III disease
    • Axillary lymph nodes negative or 1-3 nodes positive (pN0 or pN+(1-3))

  • Must have undergone breast conservation surgery with or without adjuvant systemic therapy

    • Minimum microscopic margin of non-cancerous tissue ≥ 2 mm (excluding deep margin if this is at deep fascia)
  • At low risk of local recurrence after radiotherapy (< 1% annual risk local recurrence)
  • No prior mastectomy
  • No blood-borne metastases

PATIENT CHARACTERISTICS:

  • No prior malignancy except nonmelanoma skin cancer

PRIOR CONCURRENT THERAPY:

  • See Disease Characteristics

  • No prior endocrine therapy or chemotherapy

    • Neoadjuvant endocrine therapy allowed provided the tumour is < 3.0 cm and all other inclusion criteria are met
    • No primary endocrine therapy as a replacement for surgery
  • No concurrent chemoradiotherapy

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Behandling
  • Tildeling: Randomiseret
  • Interventionel model: Parallel tildeling
  • Maskning: Ingen (Åben etiket)

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Aktiv komparator: Arm I (control)
Patients undergo standard whole breast radiotherapy once daily on days 1-5 for 3 weeks.
Stråling: radiation therapy
Patients undergo standard whole breast, reduced whole breast, or standard partial breast radiotherapy
Eksperimentel: Arm II
Patients undergo reduced whole breast radiotherapy and standard partial breast radiotherapy once daily on days 1-5 for 3 weeks.
Stråling: radiation therapy
Patients undergo standard whole breast, reduced whole breast, or standard partial breast radiotherapy
Eksperimentel: Arm III
Patients undergo standard partial breast radiotherapy once daily on days 1-5 for 3 weeks.
Stråling: radiation therapy
Patients undergo standard whole breast, reduced whole breast, or standard partial breast radiotherapy

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Tidsramme
Local tumor control in the ipsilateral breast (i.e., true recurrence plus new primary tumor) as confirmed by cytological or histological assessment
Tidsramme: 5 years
5 years

Sekundære resultatmål

Resultatmål
Tidsramme
Location of tumor relapse
Tidsramme: 5 years
5 years
Contralateral primary breast cancer or other primary tumors as confirmed by cytological or histological assessment
Tidsramme: 5 years
5 years
Regional and distant metastases
Tidsramme: 5 years
5 years
Late adverse effects in normal tissue normal tissues as determined periodically by photographic assessments (in a subset of patients), physician assessments, and patient self-assessments
Tidsramme: 5 years
5 years
Quality of life as assessed by EORTC QLQ C-30, EORTC QLQ-BR23, BIS, and HADS questionnaires in a subset of patients at baseline, 6 months, and 1, 2, and 5 years
Tidsramme: 5 years
5 years
Cost-effectiveness as assessed by EQ-5D questionnaire at baseline, 6 months, and 1, 2, and 5 years
Tidsramme: 10 years
10 years

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

Institute of Cancer Research, United Kingdom

Samarbejdspartnere

Cancer Research UK

Efterforskere

  • Ledende efterforsker: Charlotte E Coles, PhD, University of Cambrige, England

Publikationer og nyttige links

Den person, der er ansvarlig for at indtaste oplysninger om undersøgelsen, leverer frivilligt disse publikationer. Disse kan handle om alt relateret til undersøgelsen.

Generelle publikationer

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart (Faktiske)

3. maj 2007

Primær færdiggørelse (Faktiske)

15. juni 2016

Studieafslutning (Forventet)

1. september 2020

Datoer for studieregistrering

Først indsendt

24. december 2008

Først indsendt, der opfyldte QC-kriterier

24. december 2008

Først opslået (Skøn)

25. december 2008

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

27. februar 2019

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

26. februar 2019

Sidst verificeret

1. februar 2019

Mere information

Begreber relateret til denne undersøgelse

Nøgleord

Yderligere relevante MeSH-vilkår

Andre undersøgelses-id-numre

  • CDR0000629768
  • NIHR 2253 (Anden identifikator: NIHR)
  • ICR-CTSU/2006/10001 (Anden identifikator: ICR-CTSU)
  • ISRCTN12852634 (Registry Identifier: ISRCTN)
  • CRUK/06/003 (Andet bevillings-/finansieringsnummer: Cancer Research UK)
  • 06/Q1605/128 (Anden identifikator: Main Research Ethics Committee)

Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter

Studerer et amerikansk FDA-reguleret lægemiddelprodukt

Ingen

Studerer et amerikansk FDA-reguleret enhedsprodukt

Ingen

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