Toremifene With or Without Atamestane in Treating Postmenopausal Women With Metastatic 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: NCT00010322
Recruitment Status : Terminated (Withdrawn due to change in standard of care - new protocol required)
First Posted : May 5, 2004
Last Update Posted : March 26, 2014
Information provided by (Responsible Party):
Intarcia Therapeutics

Brief Summary:

RATIONALE: Estrogen can stimulate the growth of breast cancer cells. Toremifene may fight breast cancer by blocking the uptake of estrogen by the tumor cells. Atamestane may fight breast cancer by blocking the production of estrogen. It is not yet known if toremifene is more effective with or without atamestane.

PURPOSE: Randomized phase III trial to compare the effectiveness of toremifene with or without atamestane in treating postmenopausal women who have metastatic breast cancer.

Condition or disease Intervention/treatment Phase
Breast Cancer Drug: atamestane Drug: toremifene Phase 3

Detailed Description:

OBJECTIVES: I. Compare the time to progression in postmenopausal women with metastatic breast cancer treated with toremifene with or without atamestane. II. Compare the response rate, overall survival, duration of response, and time to treatment failure in patients treated with these regimens. III. Compare the safety profile of these regimens in this patient population.

OUTLINE: This is a randomized, double-blind, placebo-controlled, multicenter study. Patients are stratified according to study center. Patients are randomized to one of two treatment arms. Arm I: Patients receive oral toremifene daily and oral atamestane twice daily. Arm II: Patients receive oral toremifene as in arm I and an oral placebo twice daily. Treatment continues for 12-30 months in the absence of disease progression or unacceptable toxicity. Patients are followed every 12 weeks for survival.

PROJECTED ACCRUAL: A total of 594 patients (297 per treatment arm) will be accrued for this study within 18 months.

Study Type : Interventional  (Clinical Trial)
Primary Purpose: Treatment
Official Title: Phase III Study of Atamestane Plus Toremifene in Metastatic Breast Cancer
Study Start Date : October 2000
Actual Primary Completion Date : May 2001
Actual Study Completion Date : May 2001

Resource links provided by the National Library of Medicine

MedlinePlus related topics: Breast Cancer

Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.

Ages Eligible for Study:   18 Years and older   (Adult, Older Adult)
Sexes Eligible for Study:   Female
Accepts Healthy Volunteers:   No

DISEASE CHARACTERISTICS: Histologically confirmed metastatic breast cancer Bidimensionally measurable disease Lesion at least 2 cm in at least 1 diameter No failure with prior adjuvant antiestrogens within the first 12 months of treatment No progression of disease during therapy with prior aromatase inhibitors or selective estrogen receptor modulators (SERMs) (including SERMs for prevention of osteoporosis) No history of known central nervous system (CNS) metastases No bone metastases as only tumor manifestation Hormone receptor status: Estrogen receptor and/or progesterone receptor positive

PATIENT CHARACTERISTICS: Age: 18 and over Sex: Female Menopausal status: Postmenopausal Performance status: ECOG 0-1 Life expectancy: At least 12 weeks Hematopoietic: Hemoglobin at least 9 g/dL Platelet count at least 100,000/mm3 WBC at least 2,000/mm3 Hepatic: AST and ALT no greater than 2.5 times upper limit of normal (ULN) Bilirubin no greater than 2.5 times ULN Renal: Creatinine no greater than 2.0 mg/dL Other: No significant neurological dysfunction including seizures or clinical signs of other significant neurological diseases No other active malignancy within the past 5 years except basal cell skin cancer or carcinoma in situ of the cervix No contraindication to toremifene or its excipients or any of the excipients in atamestane Not pregnant or nursing

PRIOR CONCURRENT THERAPY: Biologic therapy: Not specified Chemotherapy: No prior cytotoxic chemotherapy for metastatic disease At least 6 months since prior adjuvant chemotherapy No concurrent chemotherapy Endocrine therapy: See Disease Characteristics No prior hormonal therapy for metastatic disease At least 12 months since prior adjuvant antiestrogens No concurrent SERMs or estrogenic or androgenic hormones No other concurrent aromatase inhibitors Radiotherapy: No concurrent radiotherapy except for palliation for bone metastases Surgery: Not specified Other: No prior enrollment in this study At least 30 days since prior investigational drugs No other concurrent investigational drugs Concurrent bisphosphonates for bone metastases allowed

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): NCT00010322

United States, New York
Millennix Inc.
Purchase, New York, United States, 10577
Sponsors and Collaborators
Intarcia Therapeutics
Study Chair: Peter Langecker, MD, PhD Intarcia Therapeutics

Responsible Party: Intarcia Therapeutics Identifier: NCT00010322     History of Changes
Other Study ID Numbers: CDR0000068480
First Posted: May 5, 2004    Key Record Dates
Last Update Posted: March 26, 2014
Last Verified: March 2014

Keywords provided by Intarcia Therapeutics:
stage IV breast cancer
recurrent breast cancer

Additional relevant MeSH terms:
Breast Neoplasms
Neoplasms by Site
Breast Diseases
Skin Diseases
Antineoplastic Agents, Hormonal
Antineoplastic Agents
Selective Estrogen Receptor Modulators
Estrogen Receptor Modulators
Hormone Antagonists
Hormones, Hormone Substitutes, and Hormone Antagonists
Physiological Effects of Drugs
Bone Density Conservation Agents
Enzyme Inhibitors
Molecular Mechanisms of Pharmacological Action