Radiation Therapy With or Without Optional Tamoxifen in Treating Women With Ductal Carcinoma in Situ

This study is ongoing, but not recruiting participants.
Sponsor:
Collaborators:
Cancer and Leukemia Group B
NCIC Clinical Trials Group
NRG Oncology Foundation, Inc.
Information provided by (Responsible Party):
Radiation Therapy Oncology Group
ClinicalTrials.gov Identifier:
NCT00003857
First received: November 1, 1999
Last updated: July 30, 2014
Last verified: July 2014

November 1, 1999
July 30, 2014
December 1999
February 2004   (final data collection date for primary outcome measure)
Local recurrence (e.g., invasive or noninvasive recurrence) [ Time Frame: From randomization to date of local failure in the treated breast or last follow-up. Analysis occurs after all patients have been potentially followed for 5 years. ] [ Designated as safety issue: No ]
Not Provided
Complete list of historical versions of study NCT00003857 on ClinicalTrials.gov Archive Site
  • Overall survival [ Time Frame: From randomization to date of death or last follow-up. Analysis occurs after all patients have been potentially followed for 5 years. ] [ Designated as safety issue: No ]
  • Time to distant metastasis [ Time Frame: From randomization to date of distant metastasis or last follow-up. Analysis occurs after all patients have been potentially followed for 5 years. ] [ Designated as safety issue: No ]
  • Invasive local recurrence [ Time Frame: From randomization to date of invasive local failure in the treated breast or last follow-up. Analysis occurs after all patients have been potentially followed for 5 years. ] [ Designated as safety issue: No ]
  • Salvage mastectomy rate [ Time Frame: Analysis occurs after all patients have been potentially followed for 5 years. ] [ Designated as safety issue: No ]
Not Provided
Not Provided
Not Provided
 
Radiation Therapy With or Without Optional Tamoxifen in Treating Women With Ductal Carcinoma in Situ
Phase III Trial of Tamoxifen Alone vs. Tamoxifen Plus Radiation Therapy for Good Risk Duct Carcinoma In-Situ (DCIS) of the Female Breast

RATIONALE: Radiation therapy uses high-energy x-rays to damage tumor cells. Estrogen can stimulate the growth of breast cancer cells. Hormone therapy using tamoxifen may fight breast cancer by blocking the uptake of estrogen by the tumor cells. It is not yet known if radiation therapy is more effective than observation, with or without tamoxifen, in treating ductal carcinoma in situ.

PURPOSE: Randomized phase III trial to compare the effectiveness of radiation therapy with that of observation, with or without tamoxifen, in treating women who have ductal carcinoma in situ.

OBJECTIVES:

  • Compare the efficacy of whole breast radiotherapy vs observation with or without optional tamoxifen in decreasing or delaying the appearance of local failure (both invasive and in situ) and preventing the need for mastectomy in women with good-risk ductal carcinoma in situ (DCIS) of the breast.
  • Compare distant disease-free survival of patients treated with these regimens.

OUTLINE: This is a randomized, multicenter study. Patients are stratified according to age (under 50 vs 50 and over), final path margins (negative vs 3-9 mm vs at least 10 mm), mammographic size of primary (no greater than 1 cm vs greater than 1 cm to 2.5 cm), nuclei grade (low vs intermediate), and tamoxifen use (yes vs no). Patients are randomized to 1 of 2 treatment arms.

  • Arm I: Patients undergo observation and may receive optional oral tamoxifen once daily (at the discretion of the physician) for 5 years.
  • Arm II: Beginning within 12 weeks after final surgery, patients receive radiotherapy to the whole breast once daily, 5 days a week, for 3.5-5.5 weeks. Patients may receive optional tamoxifen as in arm I.

Patients are followed every 3 months for 1 year, every 6 months for 2 years, and then annually thereafter.

PROJECTED ACCRUAL: A total of 1,790 patients will be accrued for this study within 6 years.

Interventional
Phase 3
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Open Label
Primary Purpose: Treatment
Breast Cancer
  • Drug: tamoxifen citrate
  • Procedure: adjuvant therapy
  • Radiation: radiation therapy
  • Active Comparator: Observation +/- tamoxifen for 5 years
    Observation +/- tamoxifen 20 mg per day for 5 years
    Interventions:
    • Drug: tamoxifen citrate
    • Procedure: adjuvant therapy
  • Experimental: Radiation therapy +/- tamoxifen for 5 years
    Radiation therapy to the whole breast +/- tamoxifen 20 mg per day for 5 years
    Interventions:
    • Drug: tamoxifen citrate
    • Procedure: adjuvant therapy
    • Radiation: radiation therapy
Not Provided

*   Includes publications given by the data provider as well as publications identified by ClinicalTrials.gov Identifier (NCT Number) in Medline.
 
Active, not recruiting
636
Not Provided
February 2004   (final data collection date for primary outcome measure)

DISEASE CHARACTERISTICS:

  • Ductal carcinoma in situ (DCIS) of the breast detected by mammogram at the time of diagnosis

    • Unicentric
    • Lesions ≤ 2.5 cm
    • Low nuclei grade (NG1) or intermediate nuclei grade (NG2) with necrosis in < one third of the involved ducts
    • Inked margins ≥ 3 mm
    • Clinically node negative
    • Non-palpable
  • No suspicious areas on post-operative mammogram taken within 12 weeks after final surgery
  • No bloody nipple discharge
  • No more than 12 weeks since prior final surgery (arm II only)
  • Hormone receptor status:

    • Not specified

PATIENT CHARACTERISTICS:

Age:

  • 26 and over

Sex:

  • Female

Menopausal status:

  • Not specified

Performance status:

  • Not specified

Life expectancy:

  • Not specified

Hematopoietic:

  • Not specified

Hepatic:

  • Not specified

Renal:

  • Not specified

Other:

  • Not pregnant or nursing
  • No active connective tissue disorders (e.g., lupus or scleroderma)
  • No prior malignancy within the past 5 years except adequately treated basal cell or squamous cell skin cancer or carcinoma in situ of the cervix

PRIOR CONCURRENT THERAPY:

Biologic therapy:

  • Not specified

Chemotherapy:

  • No prior chemotherapy

Endocrine therapy:

  • No other concurrent hormonal therapy (e.g., raloxifene, hormone replacement therapy, or birth control pills)

Radiotherapy:

  • No prior radiotherapy

Surgery:

  • See Disease Characteristics
Female
26 Years and older
No
Contact information is only displayed when the study is recruiting subjects
United States,   Canada
 
NCT00003857
RTOG-98-04, CDR0000067020, CAN-NCIC-MA26, CALGB-49801, RTOG-DEV-1026, NCI-2011-02038
Yes
Radiation Therapy Oncology Group
Radiation Therapy Oncology Group
  • National Cancer Institute (NCI)
  • Cancer and Leukemia Group B
  • NCIC Clinical Trials Group
  • NRG Oncology Foundation, Inc.
Study Chair: Beryl McCormick, MD Memorial Sloan-Kettering Cancer Center
Investigator: Clifford A. Hudis, MD Memorial Sloan-Kettering Cancer Center
Study Chair: Barbara L. Smith, MD, PhD Massachusetts General Hospital
Study Chair: Timothy J. Whelan, MD Margaret and Charles Juravinski Cancer Centre
Investigator: Eileen Rakovitch, MD Odette Cancer Centre at Sunnybrook
Radiation Therapy Oncology Group
July 2014

ICMJE     Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP