Conditions: Breast Cancer
Keywords: stage IV breast cancer recurrent breast cancer
Allocation: NA | Intervention model: SINGLE_GROUP
Enrollment: 46
Healthy volunteers: no

Brief summary:
RATIONALE: Sorafenib may stop the growth of tumor cells by blocking some of the enzymes needed for cell growth. Drugs used in chemotherapy, such as vinorelbine, work in different ways to stop the growth of tumor cells, either by killing the cells or by stopping them from dividing. Giving sorafenib together with vinorelbine may kill more tumor cells.

PURPOSE: This phase I/II trial is studying the side effects and best dose of sorafenib when given together with vinorelbine and to see how well they work in treating women with stage IV breast cancer.

Detailed description:
OBJECTIVES:

Primary

* To determine the safety, tolerability, and recommended phase II dose of sorafenib tosylate when administered in combination with vinorelbine ditartrate in women with stage IV adenocarcinoma of the breast. (Phase I)
* To evaluate the 4-month progression-free survival rate in patients treated with this regimen at the maximum tolerated dose. (Phase II)

Secondary

* To determine time to treatment failure in these patients.
* To determine the response rate in these patients.
* To determine the overall survival and progression-free survival of these patients.
* To evaluate the toxicity profile of this regimen.

OUTLINE: This is a phase I, dose-escalation study of sorafenib tosylate followed by a phase II study.

Patients receive oral sorafenib tosylate on days 1-28 and vinorelbine ditartrate IV on days 1, 8, and 15. Courses repeat every 28 days in the absence of disease progression or unacceptable toxicity.

After completion of study treatment, patients are followed periodically.

Arms:
arm 1: Patients receive sorafenib tosylate PO twice daily on days 1-28 and vinorelbine ditartrate IV on days 1, 8, and 15. Courses repeat every 28 days in the absence of disease progression or unacceptable toxicity.

Interventions: intervention 1: sorafenib tosylate intervention 2: vinorelbine ditartrate
Intervention descriptions: intervention 1: Dose level 1 = 200 mg by mouth two times a day on days 1-28 of a 28 day cycle. Dose level 2 = 200 mg by mouth two times a day on days 1-28 of a 28 day cycle. Dose level 3 = 200 mg by mouth in the am and 400 mg by mouth in the pm on days 1-28 of a 28 day cycle. Dose level 4 = 400 mg by mouth two times a day on days 1-28 of a 28 day cycle. intervention 2: Dose level 1 = 20 mg/m2 IV weekly on days 1, 8, and 15 of a 28 day cycle. Dose level 2 = 25 mg/m2 IV weekly on days 1, 8, and 15 of a 28 day cycle. Dose level 3 = 25 mg/m2 IV weekly on days 1, 8, and 15 of a 28 day cycle. Dose level 4 = 25 mg/m2 IV weekly on days 1, 8, and 15 of a 28 day cycle.

Protocol document: