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Chemotherapy or Letrozole Before Surgery in Treating Postmenopausal Women With Breast Cancer That Can Be Removed By Surgery

2014-08-27 03:19:51 | BioPortfolio

Summary

RATIONALE: Drugs used in chemotherapy work in different ways to stop the growth of tumor cells, either by killing the cells or by stopping them from dividing. Estrogen can stimulate the growth of breast cancer cells. Hormone therapy using letrozole may fight breast cancer by reducing the production of estrogen. It is not yet known whether giving more than one drug (combination chemotherapy) or giving letrozole before surgery is more effective in treating women with breast cancer.

PURPOSE: This randomized phase III trial is studying giving combination chemotherapy before surgery to see how well it works compared with letrozole given before surgery in treating postmenopausal women with breast cancer that can be removed by surgery.

Description

OBJECTIVES:

- To compare the efficacy and tolerability of cytotoxic chemotherapy versus aromatase inhibition for the down-staging of strongly ER+ primary breast cancer in postmenopausal women.

- To identify biological predictors of response to these two treatment modalities.

OUTLINE: This is a multicenter pilot, feasibility study followed by a randomized study. In the pilot study, a record of all patients screened and invited to participate in the study is compiled. Reasons for failure to recruit will be recorded. Patients are randomized to 1 of 2 treatment arms.

- Arm I: Patients receive fluorouracil IV, epirubicin IV, and cyclophosphamide IV on day 1. Treatment repeats every 21 days for 6 courses in the absence of disease progression or unacceptable toxicity. Patients who do not achieve at least partial response after 3 courses receive docetaxel IV on day 1 of 3-week courses for an additional 3 courses.

- Arm II: Patients receive oral letrozole daily for 18-23 weeks until day of surgery.

Patients in both arms undergo surgery at week 18-23. Most patients then receive adjuvant therapy.

Quality of life is assessed at baseline, periodically during study treatment, and then during follow up.

Blood is collected pre-treatment, at mid-treatment, and before surgery. Blood is then collected every 6 months for 2 years. Blood samples and preserved tumor samples are used for correlative studies.

After completion of surgery, patients are followed up at least annually for 10 years.

PROJECTED ACCRUAL: A total of 40 patients for the pilot study and 716 patients for the phase III study will be accrued.

Study Design

Allocation: Randomized, Masking: Open Label, Primary Purpose: Treatment

Conditions

Breast Cancer

Intervention

cyclophosphamide, docetaxel, epirubicin hydrochloride, fluorouracil, letrozole

Location

Asan Medical Center - University of Ulsan College of Medicine
Seoul
England
Korea, Republic of
138-736

Status

Recruiting

Source

National Cancer Institute (NCI)

Results (where available)

View Results

Links

Published on BioPortfolio: 2014-08-27T03:19:51-0400

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Medical and Biotech [MESH] Definitions

A deoxycytidine derivative and fluorouracil PRODRUG that is used as an ANTINEOPLASTIC ANTIMETABOLITE in the treatment of COLON CANCER; BREAST CANCER and GASTRIC CANCER.

Abnormal accumulation of lymph in the arm, shoulder and breast area associated with surgical or radiation breast cancer treatments (e.g., MASTECTOMY).

Metastatic breast cancer characterized by EDEMA and ERYTHEMA of the affected breast due to LYMPHATIC METASTASIS and eventual obstruction of LYMPHATIC VESSELS by the cancer cells.

Precursor of an alkylating nitrogen mustard antineoplastic and immunosuppressive agent that must be activated in the LIVER to form the active aldophosphamide. It has been used in the treatment of LYMPHOMA and LEUKEMIA. Its side effect, ALOPECIA, has been used for defleecing sheep. Cyclophosphamide may also cause sterility, birth defects, mutations, and cancer.

A infiltrating (invasive) breast cancer, relatively uncommon, accounting for only 5%-10% of breast tumors in most series. It is often an area of ill-defined thickening in the breast, in contrast to the dominant lump characteristic of ductal carcinoma. It is typically composed of small cells in a linear arrangement with a tendency to grow around ducts and lobules. There is likelihood of axillary nodal involvement with metastasis to meningeal and serosal surfaces. (DeVita Jr et al., Cancer: Principles & Practice of Oncology, 3d ed, p1205)

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