Tamoxifen With or Without Octreotide in Treating Postmenopausal Women With Stage I, Stage II, or Stage III Breast Cancer
RATIONALE: Estrogen can stimulate the growth of breast cancer cells. Hormone therapy using tamoxifen with or without octreotide may fight breast cancer by blocking the uptake of estrogen. It is not yet known which treatment regimen is more effective for breast cancer.
PURPOSE: Randomized phase III trial to compare the effectiveness of tamoxifen with or without octreotide in treating postmenopausal women who have stage I, stage II, or stage III breast cancer.
|Study Design:||Allocation: Randomized
Endpoint Classification: Safety/Efficacy Study
Intervention Model: Parallel Assignment
Masking: Open Label
Primary Purpose: Treatment
|Official Title:||A RANDOMIZED TRIAL OF ANTIESTROGEN THERAPY VERSUS COMBINED ANTIESTROGEN AND OCTREOTIDE LAR THERAPY IN THE ADJUVANT TREATMENT OF BREAST CANCER IN POST-MENOPAUSAL WOMEN|
- Event-free survival [ Time Frame: 6 years ] [ Designated as safety issue: No ]
- Recurrence-free survival [ Time Frame: 6 years ] [ Designated as safety issue: No ]
- Overall survival [ Time Frame: 6 years ] [ Designated as safety issue: No ]
- Insulin-like growth factor measures [ Time Frame: 6 years ] [ Designated as safety issue: No ]
- Quality of Life [ Time Frame: 6 years ] [ Designated as safety issue: No ]
|Study Start Date:||August 1996|
|Study Completion Date:||April 2010|
|Primary Completion Date:||October 2007 (Final data collection date for primary outcome measure)|
|Active Comparator: Octreotide||
Drug: octreotide acetate
Octreotide LAR (SMS 201-995 pa LAR) 90 mg depot injection monthly for 2 years (plus Tamoxifen 20 mg PO daily for 5 years)
|Active Comparator: Tamoxifen||
Drug: tamoxifen citrate
20 mg PO for 5 years
OBJECTIVES: I. Compare event-free, recurrence-free, and overall survival following adjuvant therapy with tamoxifen alone vs. tamoxifen plus octreotide long-acting release formulation in postmenopausal women with stage I/II/III breast cancer. II. Compare the toxicity and quality of life associated with each treatment regimen. III. Compare the effects of each treatment regimen on insulin-like growth factor-I (IGF-I) physiology, and study the relationship between IGF-I physiology and outcome.
OUTLINE: This is a randomized study. Patients are stratified by participating institution, when and whether they receive adjuvant chemotherapy, axillary lymph node status, and hormone receptor status. All patients are randomized within 12 weeks of definitive surgery. Patients receiving adjuvant chemotherapy prior to protocol treatment are randomized within 6 weeks after the last dose of chemotherapy. One group of patients receives daily oral tamoxifen, while a second group receives daily oral tamoxifen plus octreotide (long-acting release formulation) by monthly depot injection. Treatment in both groups continues for 5 years or until disease recurrence or development of a second malignancy. Patients are followed monthly for 4 months, every 4 months for 3 years, and every 6 months thereafter.
PROJECTED ACCRUAL: A total of 850 patients will be entered over 4.2 years in this multicenter study.
Show 40 Study Locations
|Study Chair:||Michael N. Pollak, MD||Jewish General Hospital|