NCT00082810

Tipifarnib and Fulvestrant in Hormone Receptor-Positive Metastatic Breast Cancer

A Phase II Trial of Tipifarnib (R115777, Zarnestra™) in Combination With Fulvestrant (Faslodex®) in Postmenopausal Hormone Receptor-Positive Breast Cancer

• Status: Completed
• Phase: Phase 2
• Study type: Interventional
• Enrollment: 33 (actual)
• Sponsor: National Cancer Institute (NCI) · NIH
• Sex: Female
• Age: 18 Years
• Healthy volunteers: Not accepted

Summary

This phase II trial is studying how well giving tipifarnib together with fulvestrant works as second-line therapy in treating postmenopausal women with hormone receptor-positive inoperable locally advanced or metastatic breast cancer that has progressed after previous first-line endocrine therapy. Tipifarnib may stop the growth of tumor cells by blocking the enzymes necessary for their growth. Estrogen can stimulate the growth of breast cancer cells. Hormone therapy using fulvestrant may fight breast cancer by blocking the use of estrogen. Combining tipifarnib with fulvestrant may kill tumor cells that did not respond to first-line therapy.

Detailed description

PRIMARY OBJECTIVES: I. To determine the efficacy of tipifarnib (R115777, Zarnestra™) in combination with fulvestrant based on clinical benefit rate (CBR, a combination of complete response rate, partial response rate, and stable disease for more than 24 weeks) in postmenopausal women with hormone receptor-positive metastatic breast cancer who have progressive disease after first-line endocrine therapy. SECONDARY OBJECTIVES: I. To determine the median time to progression (TTP) and duration of response of tipifarnib (R115777, Zarnestra™) in combination with fulvestrant in postmenopausal women with hormone receptor-positive metastatic breast cancer. II. To determine the median overall survival of tipifarnib (R115777, Zarnestra™) in combination with fulvestrant in postmenopausal women with hormone receptor- positive metastatic breast cancer who have progressive disease after first-line endocrine therapy. III. To determine the toxicity profile of tipifarnib (R115777, Zarnestra™) in combination with fulvestrant versus fulvestrant alone (from historical control) in postmenopausal women with hormone receptor positive metastatic breast cancer who have progressive disease after first-line endocrine therapy. OUTLINE: Patients receive fulvestrant intramuscularly on day 1 and oral tipifarnib twice daily on days 1-21. Courses repeat every 28 days in the absence of disease progression or unacceptable toxicity\*. NOTE: \*Fulvestrant continues even if tipifarnib is held for toxicity. Patients are followed every 3 months.

Conditions

• Estrogen Receptor-positive Breast Cancer
• Recurrent Breast Cancer
• Stage IIIB Breast Cancer
• Stage IIIC Breast Cancer
• Stage IV Breast Cancer

Interventions

Type	Name	Description
DRUG	fulvestrant	Given intramuscularly
DRUG	tipifarnib	Given IV

Timeline

• Start date: 2004-03-01
• Primary completion: 2008-07-01
• Completion: 2008-09-01
• First posted: 2004-05-19
• Last updated: 2018-11-01
• Results posted: 2015-08-10

Locations

1 site across 1 country: United States