Conditions: Recurrent Breast Carcinoma Stage III Breast Cancer AJCC v7 Stage IIIA Breast Cancer AJCC v7 Stage IIIB Breast Cancer AJCC v7 Stage IIIC Breast Cancer AJCC v7 Stage IV Breast Cancer AJCC v6 and v7
Allocation: NA | Intervention model: SINGLE_GROUP
Enrollment: 31
Healthy volunteers: no

Brief summary:
This phase II trial studies how well temsirolimus works in treating patients with breast cancer that has spread to other places in the body. Temsirolimus may stop the growth of tumor cells by blocking some of the enzymes needed for cell growth.

Detailed description:
PRIMARY OBJECTIVES:

I. To determine the overall activity (as defined by complete response \[CR\] + partial response \[PR\] + stable disease \[SD\] for \>= 24 weeks) of a weekly 25 mg intravenous dose of temsirolimus in patients with locally advanced or metastatic breast cancer.

II. To compare the activity of temsirolimus in patients with locally advanced or metastatic breast cancer whose primary tumors have mutations in the PIK3CA or PTEN gene with those whose tumors do not have a mutation in the PIK3CA gene.

III. To examine correlations between antitumor activity of temsirolimus and alterations in expression of genes in the PI3K pathway in primary tumor biopsy specimens.

OUTLINE:

Patients receive temsirolimus intravenously (IV) over 30 minutes weekly. Courses repeat every 28 days in the absence of disease progression or unacceptable toxicity.

Arms:
arm 1: Patients receive temsirolimus IV over 30 minutes weekly. Courses repeat every 28 days in the absence of disease progression or unacceptable toxicity.

Interventions: intervention 1: Laboratory Biomarker Analysis intervention 2: Temsirolimus
Intervention descriptions: intervention 1: Correlative studies intervention 2: Given IV

Protocol document: