The overarching purpose of this study is to determine if the mainstay chemotherapeutic regimens represented by several genotoxic agents including but not limited to Cyclophosphamide, Doxorubicin, Epirubicin, Fluorouracil and Methotrexate (CDEFM), in the format of either a single agent or combinations are safe, tolerable, and effective in the treatment of patients with infiltrating ductal carcinoma of breast.

Infiltrating ductal carcinoma (IDC) of breast, or sometimes called invasive ductal carcinoma of breast, is the most common type of breast malignancy. About 80% of all breast cancers are IDCs.

Once found, IDC usually has already broken through the wall of the milk duct and begun to invade the tissues of the breast. Over time, IDC can spread to the lymph nodes and possibly to other areas of the body with high frequency.

According to the statistics of American Cancer Society, more than 180,000 women in the United States are diagnosed with IDC each year. Although IDC can affect women at any age, it is more common as they grow older. Further, approximately two-thirds of women are 55 or older when they are diagnosed with such this symptom.

The treatments for invasive ductal carcinoma fall into two broad categories. First, local treatments for IDC, including surgery and radiation, which treat the primary tumor and surrounding areas such as the chest and lymph nodes. Second, systemic treatments for IDC, including chemotherapy, hormone therapy and targeted therapy, which are supposed to deliver cytotoxicity throughout the body to eliminate any cancer cells that have left the primary site and to help minimize the risk of recurrent disease.

PURPOSE: This randomized phase I trial is to determine the safety, tolerability and efficacy of single or concurrent administration of cyclophosphamide, doxorubicin, epirubicin, fluorouracil and methotrexate (CDEFM) to women undergoing surgery for infiltrating ductal carcinoma in situ breast cancer.

RATIONALE: This is a randomized, controlled, open-labeled and multicenter, pilot study. Patients are randomized to 1 of 2 treatment arms (arms A or B). Patients accrued as control participants are assigned to arm C. to implement the study, the investigators will collect surgical samples of the primary tumor and periphery blood from breast cancer patients to assess the effects of chemotherapeutic regimens and correlation with post-therapy survival in the patient cohorts. Besides the five-year disease-free survival, overall survival and five-year metastasis-free survival post treatment, the investigators also analyze and evaluate the anticancer agent-induced tumor stroma damage extent, which may provide further evidence to confirm the treatment efficacy and appraise the potential influence of a damaged tumor microenvironment on disease progression or regression in clinical settings.

Inclusion Criteria:

• Patients ≥ 18 years of age with histologically proven infiltrating ductal carcinoma of breast
• no severe major organ dysfunction
• Patients must have adequate hematopoietic function as evidenced by:

white blood cells (WBC) ≥ 3,000/μl absolute neutrophil count (ANC) ≥ 1,500/μl Platelet count ≥ 100,000/μl hemoglobin (HGB) ≥ 10 g/dl and not transfusion dependent

• Alanine aminotransferase (ALT) and aspartate aminotransferase (AST) ≤ 10% above upper limit of normal
• Individuals of child-bearing potential must have a negative serum or urine pregnancy test within 72 hours of Cycle 1 Day 1.
• World Health Organization (WHO) performance status of 0 or 1
• No prior or concurrent cancer-associated chemotherapy, no initiation of new hormonal therapy
• Hormone receptor (estrogen receptor (ER), progesterone receptor (PR), epidermal growth factor receptor 2 (Her2)) status not specified
• Menopausal status not specified
• Patients or their legal representatives must be willing and able to provide written informed consent
• A Clinical Stage ≥ I subtype A (IA) (T1a, N0, M0) of Beast Cancer but without diagnosed distant metastasis (according to the 1997 revision of the International Union Against Cancer-PrimaryTumor, Regional Nodes and Metastasis (TNM) staging system) as determined by a preoperative evaluation that included a chest computed tomography (CT) scan and/or X-ray mammography.

Exclusion Criteria:

• Age < 18
• Severe major organ dysfunction
• WHO performance status of >1
• Prior cancer chemotherapy
• Stage IV
• Patients with symptomatic central nervous system (CNS) metastases from breast cancer
• Patients with a history of another invasive malignancy within the last 3 years
• History of loss of consciousness or transient ischemic attack within 12 months before study treatment initiation.
• Patients who have known active HIV, Hepatitis B, or Hepatitis C infections.
• Patients with any other condition which in the opinion of the investigator would preclude participation in the study.

Output data from this clinical study will be be made available to the public appropriately upon complete of the primary investigation, according to the original plan.