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Tamoxifen With or Without Octreotide in Treating Postmenopausal Women With Stage I, Stage II, or Stage III Breast Cancer

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT00002864
Recruitment Status : Completed
First Posted : June 16, 2004
Last Update Posted : April 1, 2020
Information provided by (Responsible Party):
Canadian Cancer Trials Group ( NCIC Clinical Trials Group )

Brief Summary:

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.

Condition or disease Intervention/treatment Phase
Breast Cancer Drug: octreotide acetate Drug: tamoxifen citrate Phase 3

Detailed Description:

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.

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Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 667 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: A Randomized Trial of Antiestrogen Therapy Versus Combined Antiestrogen and Octreotide Therapy in the Adjuvant Treatment of Breast Cancer in Post-Menopausal Women
Actual Study Start Date : September 24, 1996
Actual Primary Completion Date : December 7, 2007
Actual Study Completion Date : April 23, 2010

Resource links provided by the National Library of Medicine

MedlinePlus related topics: Breast Cancer

Arm Intervention/treatment
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

Primary Outcome Measures :
  1. Event-free survival [ Time Frame: 6 years ]

Secondary Outcome Measures :
  1. Recurrence-free survival [ Time Frame: 6 years ]
  2. Overall survival [ Time Frame: 6 years ]
  3. Insulin-like growth factor measures [ Time Frame: 6 years ]
  4. Quality of Life [ Time Frame: 6 years ]

Information from the National Library of Medicine

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Ages Eligible for Study:   up to 120 Years   (Child, Adult, Older Adult)
Sexes Eligible for Study:   Female
Accepts Healthy Volunteers:   No

DISEASE CHARACTERISTICS: Histologically proven adenocarcinoma of the breast that is potentially curable Prior treatment with one of the following therapies required: Segmental mastectomy (lumpectomy) followed by radiotherapy Chest wall irradiation allowed only in patients with T4 dermal involvement on pathologic diagnosis Further excision or boost radiotherapy to the tumor bed recommended if microscopic disease found at mastectomy margins Total mastectomy Chest wall irradiation required if microscopic disease found at mastectomy margins Clinical stage T1-3a N0-2 M0 disease prior to surgery The following T4 features exclude: Chest wall extension Edema (including peau d'orange) Skin ulceration Satellite skin nodules confined to same breast Inflammatory carcinoma Pathologic stage T1-4 NX-2 M0 disease following surgery Eligible T4 tumors are those with dermal involvement on pathology assessment only Pathologic assessment of axillary lymph nodes required May be omitted in patients with clinical N0 status provided other entry criteria are met No bilateral breast cancer without complete resection of both sides Hormone receptor status: Estrogen and progesterone receptor status determined from primary tumor when possible by quantitative biochemical methods or immunohistochemistry Results recorded as positive or negative if immunohistochemistry used Unknown status does not exclude provided other entry criteria are met

PATIENT CHARACTERISTICS: Age: Postmenopausal Sex: Women only Menopausal status: Postmenopausal by one or more of the following: Amenorrhea lasting more than 1 year in women under 50 years of age with no prior hysterectomy No menses for 6 months prior to breast surgery in women 50 years of age and over with no prior hysterectomy Documented oophorectomy prior to breast cancer diagnosis Luteinizing hormone and follicle-stimulating hormone values diagnostic of postmenopausal status by local laboratory criteria Women 50 years of age and over with prior hysterectomy Performance status: ECOG 0-2 Life expectancy: At least 5 years Hematopoietic: WBC at least 3,000/mm3 Platelet count at least 100,000/mm3 Hepatic: (unless metastatic disease ruled out by radiologic exam) AST or ALT less than twice normal Alkaline phosphatase less than twice normal Renal: Not specified Other: No symptomatic gallbladder disease or cholecystitis No intercurrent illness that reduces life expectancy to less than 5 years No other major medical or psychiatric illness that precludes study treatment or follow-up No second malignancy within 5 years except: Adequately treated basal cell skin carcinoma Adequately treated cancer of the cervix, endometrium, colon, or thyroid Able and willing to complete quality-of-life questionnaires in English or French Illiteracy, loss of sight, or other inability to complete questionnaires does not exclude Accessible for treatment and follow-up

PRIOR CONCURRENT THERAPY: Biologic therapy: No prior biologic therapy Chemotherapy: Prior or concurrent adjuvant chemotherapy allowed at investigator's discretion Recommended regimens: CMF (cyclophosphamide/methotrexate/fluorouracil) CEF (cyclophosphamide/etoposide/fluorouracil) AC (doxorubicin/cyclophosphamide) Choice of adjuvant chemotherapy regimen defined prior to randomization if given concurrently with protocol therapy Endocrine therapy: No estrogen, progestins, or androgen therapy for a period of more than 30 days following pathologic diagnosis of breast cancer Prior tamoxifen allowed All hormonal therapy discontinued prior to randomization Radiotherapy: See Disease Characteristics Surgery: See Disease Characteristics

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT00002864

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Sponsors and Collaborators
NCIC Clinical Trials Group
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Study Chair: Michael N. Pollak, MD Jewish General Hospital
Publications of Results:
Ali SM, Chapman JW, Demers L, et al.: Effect of adjuvant chemotherapy on bone resorption marker beta C-telopeptide (B-CTX) in postmenopausal women. [Abstract] J Clin Oncol 27 (Suppl 15): A-594, 2009.
Piura E, Chapman JW, Lipton A, et al.: Serum 1-OH vitamin D (D) and prognosis of postmenopausal breast cancer (BC) patients: NCIC-CTG MA14 trial. [Abstract] J Clin Oncol 27 (Suppl 15): A-534, 2009.
Pollak MN, Chapman JW, Pritchard KI, et al.: NCIC-CTG MA14 trial: tamoxifen (tam) vs. tam + octreotide (oct) for adjuvant treatment of stage I or II postmenopausal breast cancer. [Abstract] J Clin Oncol 26 (Suppl 15): A-532, 2008.
Pollak MN, Chapman JW, Shepherd L, et al.: Insulin resistance, estimated by serum C-peptide level, is associated with reduced event-free survival for postmenopausal women in NCIC CTG MA.14 adjuvant breast cancer trial. [Abstract] J Clin Oncol 24 (Suppl 18): A-524, 2006.
Pollak M, Pritchard K, Whelan T, et al.: The NCIC CTG MA.14 experience with the gallbladder toxicity of octreotide pamoate (oncolar) in a postmenopausal patient population undergoing adjuvant treatment for stage 1-3 breast cancer. Eur J Cancer 38(suppl 3): s2-s179, 2002.

Publications automatically indexed to this study by Identifier (NCT Number):
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Responsible Party: NCIC Clinical Trials Group Identifier: NCT00002864    
Other Study ID Numbers: MA14
CDR0000065135 ( Other Identifier: PDQ )
First Posted: June 16, 2004    Key Record Dates
Last Update Posted: April 1, 2020
Last Verified: March 2020
Individual Participant Data (IPD) Sharing Statement:
Plan to Share IPD: No

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Studies a U.S. FDA-regulated Device Product: No
Keywords provided by Canadian Cancer Trials Group ( NCIC Clinical Trials Group ):
stage I breast cancer
stage II breast cancer
stage III breast cancer
Additional relevant MeSH terms:
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Breast Neoplasms
Neoplasms by Site
Breast Diseases
Skin Diseases
Estrogen Antagonists
Hormone Antagonists
Hormones, Hormone Substitutes, and Hormone Antagonists
Physiological Effects of Drugs
Antineoplastic Agents, Hormonal
Antineoplastic Agents
Selective Estrogen Receptor Modulators
Estrogen Receptor Modulators
Bone Density Conservation Agents
Gastrointestinal Agents