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Phase II Study of Intra-Operative Electron Irradiation and External Beam Irradiation After Lumpectomy in Patients With T1N0M0 and T2N0M0 Breast Cancer

2. april 2014 opdateret af: Mayo Clinic
The study is being done to determine the tolerance to single fraction intra-operative electron irradiation (IOERT) and external beam photon irradiation (EBRT) following lumpectomy for T1/T2N0M0 breast cancer. IOERT is used in lieu of the 5-8 days of electron beam boost irradiation that is usually given after EBRT. Data from two centers as well as preliminary data from a randomized trial in Europe suggest that IOERT boost is well tolerated and efficacious. In our study, patients will undergo standard lumpectomy and sentinel lymph node sampling or axillary dissection. After the lumpectomy, IOERT of 10 Gy will be delivered in a single fraction to the tumor bed by a mobile electron machine in the operating room. EBRT to the whole breast will be administered once the surgical wound has healed adequately. The primary objective is to determine the feasibility and acute patient tolerance to IOERT and EBRT after lumpectomy. Secondary objectives include assessment of local control and distant control of disease, as well as evaluation of long-term side effects and cosmetic outcome of the treatment.

Studieoversigt

Status

Afsluttet

Betingelser

Intervention / Behandling

Undersøgelsestype

Interventionel

Tilmelding (Faktiske)

65

Fase

  • Fase 2

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

18 år og ældre (Voksen, Ældre voksen)

Tager imod sunde frivillige

Ingen

Køn, der er berettiget til at studere

Kvinde

Beskrivelse

Eligibility:

  1. Histologically proven primary invasive breast carcinoma.
  2. Tumor pathologically determined <= 5cm in diameter.
  3. Single, discrete, well-defined primary tumor.
  4. Any micro-calcifications must be focal. A specimen radiograph is required after lumpectomy to assure removal of all malignant appearing calcifications.
  5. Pathologically negative surgical margins.
  6. Axillary lymph node status can be determined by level I and II lymph node dissection or sentinel lymph node sampling.
  7. ECOG performance status 0-2.

Contraindications:

  1. Multicentric disease and/or diffuse malignant appearing microcalcifications.
  2. Evidence of metastatic breast cancer.
  3. Axillary lymph node involvement.
  4. Pre-existing collagen vascular disease except rheumatoid arthritis that does not require immunosuppressive therapy.
  5. Prior irradiation to the ara of planned radiation field.
  6. Pregnant or lactating women.

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: Ikke-randomiseret
  • Interventionel model: Enkelt gruppeopgave
  • Maskning: Ingen (Åben etiket)

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Eksperimentel: Single arm study
Patients with stage T1/T2No breast cancer receiving breast conserving treatment
Stråling: Intra-operative radiation to tumor bed
IOERT is given to the tumor bed. Applicator selection should allow treatment of the tumor bed plus 1-2 cm margin. The surgical incision may need to be enlarged slightly to allow the placement of the appropriate applicator. The use of more than 1 treatment field is discouraged. In order to encompass the entire tumor bed in 1 treatment field, it may be necessary to suture the mammary parenchyma loosely so that the lateral margins of the tumor bed are brought into apposition. Electron energy used for the treatment. If the tumor bed can be flattened and encompassed by an applicator, 6 MeV electron is recommended. Use of bolus material may be considered to increase the surface dose. If the mammary parenchyma has been brought into apposition by sutures, a higher electron energy may be necessary to allow adequate dose coverage to a depth of 1.0-2.0 cm into the tumor bed. The dose of IOERT is 1000 cGy, prescribed to the 90% isodose line.

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Determine the feasibility and acute patient tolerance of IOERT and EBRT after lumpectomy for patients with stage T1/T2N0M0 breast cancer.
Tidsramme: weekly evaluation during 5 weeks of radiation
To determine the acute skin reaction, breast edema, pnemonitis, cardiac side effects during radiation using RTOG acute toxicity scale
weekly evaluation during 5 weeks of radiation
Determine the local tumor control and distant tumor control rates for patients with stage T1/T2N0M0 breast cancer.
Tidsramme: every 6 months follow-up for 5 years, then yearly to end in 04/2013
every 6 months follow-up for 5 years, then yearly to end in 04/2013
Determine long-term side effects and cosmetic outcome of IOERT to tumor bed and EBRT after lumpectomy for patients with stage T1/T2N0Mo breast cancer.
Tidsramme: every 6 months follow-up for 5 years, then yearly to end in 04/2013
To determine the late skin reaction, breast edema, pneumonitis, cardiac side effects during radiation using RTOG late toxicity scale
every 6 months follow-up for 5 years, then yearly to end in 04/2013

Samarbejdspartnere og efterforskere

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

Sponsor

Mayo Clinic

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

1. januar 2003

Primær færdiggørelse (Faktiske)

1. januar 2005

Studieafslutning (Faktiske)

1. januar 2013

Datoer for studieregistrering

Først indsendt

7. august 2009

Først indsendt, der opfyldte QC-kriterier

4. oktober 2010

Først opslået (Skøn)

6. oktober 2010

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Skøn)

3. april 2014

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

2. april 2014

Sidst verificeret

1. april 2014

Mere information

Begreber relateret til denne undersøgelse

Yderligere relevante MeSH-vilkår

Andre undersøgelses-id-numre

  • 1681-02 (Mayo Clinic IRB)
  • MCS066 (Mayo Clinic Cancer Center)

Disse oplysninger blev hentet direkte fra webstedet clinicaltrials.gov uden ændringer. Hvis du har nogen anmodninger om at ændre, fjerne eller opdatere dine undersøgelsesoplysninger, bedes du kontakte register@clinicaltrials.gov. Så snart en ændring er implementeret på clinicaltrials.gov, vil denne også blive opdateret automatisk på vores hjemmeside .

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