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Phase III Randomized Comparison of Adjuvant Therapy with Tamoxifen vs Cyclophosphamide, Doxorubicin and Fluorouracil plus Concurrent or Delayed Tamoxifen in Postmenopausal Women with Node- and Receptor-Positive Breast Cancer
Alternate Title Tamoxifen With or Without Combination Chemotherapy in Postmenopausal Women Who Have Undergone Surgery for Breast Cancer
Objectives I. Compare disease-free survival and overall survival of postmenopausal women with node-positive, estrogen and/or progesterone receptor-positive adenocarcinoma of the breast randomly assigned to postoperative adjuvant treatment with long-term (5 years) tamoxifen vs. CAF (cyclophosphamide/doxorubicin/fluorouracil) plus concurrent and long-term tamoxifen vs. CAF followed by long-term tamoxifen. II. Compare the relative toxicities of these three regimens. Entry Criteria Disease Characteristics: Histologically proven adenocarcinoma of the breast No apocrine, adenoidcystic, or squamous carcinomas or sarcomas Pathologic Stage T1-3a, pathologic N1-2 (clinical N0-1), M0: Rendered free of gross tumor at surgery Primary tumor movable with respect to chest wall Axillary nodes movable with respect to chest wall and each other No preoperative edema of the arm, peau d'orange, skin ulceration, or inflammatory lesions One or more positive lymph nodes required No positive deep mastectomy margins or clinical skin involvement (focal microscopic dermal invasion or focal microscopic dermal lymphatic involvement allowed) No evidence of metastatic disease on pretherapy studies (including chest x-ray, bone scan, and mammogram) No bilateral invasive tumors Patients who had noninvasive ductal carcinoma in situ of the opposite breast and underwent prophylactic contralateral mastectomy are eligible Hormone receptor status: Positive for estrogen and/or progesterone receptors (at least 10 fmol/mg protein or unequivocally positive immunocytochemical assay for one or both) Participation in SWOG-8854 (flow cytometry) recommended Prior/Concurrent Therapy:
Biologic therapy:
Not specified
Chemotherapy:
No prior chemotherapy
Endocrine therapy:
No prior hormonal therapy (except for up to 14 days of
tamoxifen stopped prior to registration)
Prior estrogen- and/or progesterone-containing hormone
preparations for nononcologic therapy allowed, but must be
discontinued prior to registration
Postmenopausal estrogen therapy should be discontinued in
all patients at the time of diagnosis of breast cancer
Radiotherapy:
Postoperative chest wall and/or regional lymph node
irradiation allowed for mastectomy patients (at discretion
of the physician) either prior to registration or on
protocol for any of the following:
Tumor greater than 5 cm in diameter
4 or more positive nodes
Extranodal extension of tumor into the axillary fat
No radiotherapy for any other reason in mastectomy patients
Postoperative radiotherapy either prior to registration,
during tamoxifen, or after completion of chemotherapy
required for lumpectomy patients
Radiotherapy must be completed (if it is to be given before
chemotherapy) prior to registration
No immediate radiotherapy after randomization to
chemotherapy
Surgery:
Radical, modified radical, or breast-sparing surgical
procedure with at least a level I and II axillary
dissection and analysis of at least 6 nodes required within
12 weeks prior to registration
Lumpectomy must include:
Total excisional biopsy with rim of normal breast tissue
Microscopically negative margins
Level I and II axillary dissection
Tumor no more than 5 cm in greatest diameter
Clinical and mammographic examination demonstrating
absence of multicentric lesions
Type of surgery, number of nodes examined, number of
positive nodes, and size of the primary tumor (size of the
largest tumor if more than 1 mass) must be recorded
Patient Characteristics:
Age:
Any age
Sex:
Females only
Menopausal status:
Postmenopausal as defined by 1 or more of the following:
Bilateral oophorectomy at least 2 months prior to
diagnosis of breast cancer (with or without estrogen
therapy following surgery)
Prior hysterectomy with at least 1 ovary remaining and
either over 60 years old or with a postmenopausal FSH
level
Natural menopause (last menstrual period at least 1 year
prior to registration or 4-12 months prior to
registration with a postmenopausal FSH level)
Treated with postmenopausal estrogen therapy and either
over 55 years old or with a postmenopausal FSH level
Performance status:
Not specified
Hematopoietic:
WBC at least 3,500/mm3
Platelet count at least 100,000/mm3
Hepatic:
Bilirubin no more than 1.2 x normal
Alkaline phosphatase no more than 1.2 x normal
SGOT or SGPT no more than 1.2 x normal
Renal:
Creatinine no more than 2.0 mg/dL
Cardiovascular:
No uncontrolled hypertension
No history of ischemic heart disease or CHF
Normal ejection fraction by MUGA (required only if deemed
clinically necessary for assessment)
Other:
No medical condition that would preclude protocol therapy:
No severe diabetes
No active ulcer disease
No significant psychiatric disease
No second malignancy within 5 years except:
Adequately treated nonmelanomatous skin cancer
Curatively treated Stage I cervical carcinoma
Pretreatment mammogram and chest x-ray completed no more than
3 months preoperatively; blood/body fluid analyses to
determine eligibility completed within 14 days prior to
registration; prestudy bone scan completed within 12 weeks
prior to registration and/or within 4 weeks prior to surgery
Expected Enrollment 350 patients will be randomized to Arm I and 530 patients each will be randomized to Arms II and III. Accrual should be completed in about 4 years, and 4 additional years will be required for follow-up. Outcomes Primary Outcome(s)Disease-free survival Outline Randomized study. All patients are randomized on Arms I, II, and III. Lumpectomy patients must receive radiotherapy on Regimen A. At the discretion of the physician, mastectomy patients may receive radiotherapy on Regimen B for a tumor greater than 5 cm in diameter, 4 or more positive nodes, or extranodal extension of the tumor into the axillary fat. Patients randomized to Arm I who are to receive radiotherapy should begin as soon as feasible postoperatively; these patients may be irradiated while receiving tamoxifen. Patients on Arms II and III who are to receive radiotherapy are treated either postoperatively prior to registration or after completion of and recovery from 6 courses of CAF. Arm I: Antiestrogen Therapy. Tamoxifen, TMX, NSC-180973. Arm II: 3-Drug Combination Chemotherapy followed by Antiestrogen Therapy. CAF: Cyclophosphamide, CTX, NSC-26271; Doxorubicin, DOX, NSC-123127; Fluorouracil, 5-FU, NSC-19893; followed by TMX. Arm III: 3-Drug Combination Chemotherapy plus Concurrent Antiestrogen Therapy. CAF; plus concurrent TMX. Regimen A: Radiotherapy. Irradiation of the breast and underlying chest wall and (optionally) of the supraclavicular area and, if indicated, the axilla, using megavoltage equipment with photon energies of up to 6 MV followed, if indicated, by a tumor bed boost using either electrons or iridium-192 (192-Ir) implants. Regimen B: Radiotherapy. Irradiation of the chest wall using either megavoltage photons via a tangential field or electrons via a direct field plus (optional) photon irradiation of the supraclavicular area and, if indicated, the axilla.Published Results Albain K, Barlow W, Shak S, et al.: Prognostic and predictive value of the 21-gene recurrence score assay in postmenopausal, node-positive, ER-positive breast cancer (S8814, INT0100). [Abstract] Breast Cancer Res Treat 106 (1): A-10, 2007. Albain K, Barlow W, O'Malley F, et al.: Concurrent (CAFT) versus sequential (CAF-T) chemohormonal therapy (cyclophosphamide, doxorubicin, 5-fluorouracil, tamoxifen) versus T alone for postmenopausal , node-positive, estrogen (ER) and/or progesterone (PgR) receptor-positive breast cancer: mature outcomes and new biologic correlates on phase III intergroup trial 0100 (SWOG-8814). [Abstract] Breast Cancer Res Treat 88 (Suppl 1): A-37, 2004. Albain KS, Green SJ, Ravdin PM, et al.: Adjuvant chemohormonal therapy for primary breast cancer should be sequential instead of concurrent: initial results from intergroup trial 0100 (SWOG-8814). [Abstract] Proceedings of the American Society of Clinical Oncology 21: A-143, 2002. Albain K, Green S, Ravdin P, et al.: Overall survival after cyclophosphamide, adriamycin, 5-Fu, and tamoxifen (CAFT) is superior to T alone in postmenopausal, receptor(+), node(+) breast cancer: new findings from phase III Southwest Oncology Group intergroup trial S8814 (INT-0100). [Abstract] Proceedings of the American Society of Clinical Oncology 20: A-94, 24a, 2001. Ravdin P, Green S, Albain K, et al.: Initial report of the SWOG biological correlative study of c-erB-2 expression as a predictor of outcome in a trial comparing adjuvant CAF T with tamoxifen (T) alone. [Abstract] Proceedings of the American Society of Clinical Oncology 17: A374, 97a, 1998. Albain K, Green S, Osborne K, et al.: Tamoxifen (T) versus cyclophosphamide, adriamycin and 5-FU plus either concurrent or sequential T in postmenopausal, receptor(+), node(+) breast cancer: a Southwest Oncology Group phase III intergroup trial (SWOG-8814, INT-0100). [Abstract] Proceedings of the American Society of Clinical Oncology 16: A-450, 128a, 1997. Related PublicationsHershman DL, Unger JM, Barlow WE, et al.: Treatment quality and outcomes of African American versus white breast cancer patients: retrospective analysis of Southwest Oncology studies S8814/S8897. J Clin Oncol 27 (13): 2157-62, 2009.[PUBMED Abstract] Hershman D, Unger J, Barlow W, et al.: Treatment quality and outcome of African American vs. European American breast cancer patients: retrospective analysis of Southwest Oncology Group studies S8814/S8897. [Abstract] Breast Cancer Res Treat 100 (Suppl 1): A-3049, S140-1, 2006. Albain KS, Green SR, Lichter AS, et al.: Influence of patient characteristics, socioeconomic factors, geography, and systemic risk on the use of breast-sparing treatment in women enrolled in adjuvant breast cancer studies: an analysis of two intergroup trials. J Clin Oncol 14 (11): 3009-17, 1996.[PUBMED Abstract] Trial Lead Organizations Southwest Oncology Group
Eastern Cooperative Oncology Group
North Central Cancer Treatment Group
Cancer and Leukemia Group B
NCIC-Clinical Trials Group
Note: The purpose of most clinical trials listed in this database is to test new cancer treatments, or new methods of diagnosing, screening, or preventing cancer. Because all potentially harmful side effects are not known before a trial is conducted, dose and schedule modifications may be required for participants if they develop side effects from the treatment or test. The therapy or test described in this clinical trial is intended for use by clinical oncologists in carefully structured settings, and may not prove to be more effective than standard treatment. A responsible investigator associated with this clinical trial should be consulted before using this protocol. Back to Top |
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