• INCLUSION CRITERIA:

All patients must have a diagnosis of metastatic infiltrating carcinoma of the breast including hormone receptor testing. At least one site of metastatic disease must have been confirmed by pathologic or cytologic material. In the choice of a biopsy site, the PI will weigh the morbidity the diagnostic procedure against the probability of positive yield of the diagnostic procedure.

All pathologic material must be reviewed by the Pathology Laboratory of the NCI before treatment.

The tumor MUST stain positive for CEA, by standard immuno-histochemistry performed at the Pathology Laboratory of the NCI.

--Method: 5 microM formalin-fixed paraffin-embedded sections are deparaffinized and blocked with methanol-30% H2O2. After antigen retrieval by boiling in citrate buffer, or heating in a microwave oven for 10 minutes, slides are incubated with monoclonal antibodies anti-CEA (diluted 1/1000 Dako). Then, slides are immunostained with avidin-biotin-peroxidase complex and developed with diaminobenzidine. Harris' hematoxylin was used to counter stain the slides. Positivity is defined as greater than 30% of cells staining.

Patients may be newly diagnosed with metastatic breast carcinoma or known to have breast carcinoma.

• If newly diagnosed, patients may not have received any chemotherapy for this disease before entry on study.
• If previously treated for breast cancer, patients may have received chemotherapy or radiation as adjuvant treatment for non-metastatic disease or metastatic disease but not in the previous 18 months.
• Patients may have been on hormonal therapy for stage IV disease. Patients with disease progression on hormonal therapy alone are eligible.

Karnofsky performance status of greater than or equal to 70% (ECOG 0 or 1)

Ejection fraction by MUGA or 2-D echocardiogram within normal institutional limits. In case of insufficient ejection fraction, a stress echocardiogram will be performed. In case of an ejection fraction greater than 35 % but less than 45%, the patient will remain eligible for the study if the increase of ejection fraction with stress is estimated at 10% or more.

Creatinine clearance greater than or equal to 60 cc/min

Normal urinalysis; if proteinuria is present it must be quantified at less than 1 g / 24 h on a measured 24 h urine collection

AST and ALT less than 3 times the upper limit of normal except if believed to be due to tumor involvement of the liver prior to induction therapy.

Bilirubin less than 1.5 (except if due to tumor involvement prior to induction therapy or in cases of Gilbert's disease).

Absolute Neutrophil Count greater than l000 / mm(3) and Platelet count greater than 90,000

Corrected DLCO greater than 50%

No history of abnormal bleeding tendency or predisposition to repeated infections.

Patient must be able to avoid close contact with children under 3 years old, pregnant women, individuals with eczema or other skin conditions, and immuno-suppressed people for 2 weeks after initial vaccination. (see protocol for specific exclusion criteria for vaccinia administration). Patients must agree to make specific arrangements, if necessary, in order to comply and be eligible.

Patients must be able to give informed consent.

EXCLUSION CRITERIA:

Age less than 18 years

Patients in whom an urgent or emergent clinical situation does not safely allow for the short delay in initiating the Concurrent Therapy (as defined in protocol) necessary for the pre-treatment immunization and lymphocyte collection (at the discretion of the PI).

Patients requiring chronic immunosuppressive therapy (including corticosteroids) for any medical condition.

Patients with an autoimmune disease: autoimmune neutropenia, thrombocytopenia, or hemolytic anemia; Rheumatoid Arthritis, Systemic Lupus Erythematosus, Sjogren syndrome, Scleroderma, Systemic Sclerosis, Myasthenia Gravis; Multiple sclerosis, Goodpasture syndrome; Addison's disease, Hashimoto's thyroiditis, or active Graves' disease)

Any abnormality on the following tests suggestive of an autoimmune disease: ANA, anti-DNA, T3, T4, TSH after review with appropriate consultant. Patients with endocrine disease that is controlled by replacement therapy including, diabetes, thyroid and adrenal disease or vitiligo may be enrolled.

Patients with active inflammatory bowel disease

Patients with clinically significant cardiomyopathy requiring treatment or symptomatic CHF, symptomatic arrhythmia that is not controlled by medication, unstable CAD such as unstable angina who require active intervention, and patients with a recent infarction or CVA within the past 6 months

Patients testing positive for HIV or hepatitis B or C

Patients known or found to be pregnant or those unwilling to discontinue breastfeeding. The effects of the chemotherapy, vaccines, and the medications used in this study are highly likely to be harmful to a fetus. The effects upon breast milk are also unknown and may be harmful to the infant; therefore, women should not breastfeed while on this study.

Patients of childbearing age who are unwilling to practice an effective form of contraception. Patients of childbearing potential must use an effective method of contraception while they are on-study; effective methods include intrauterine device (IUD), hormonal (birth control pills, injections, or implants), tubal ligation/hysterectomy (self or partner), partner's vasectomy, or barrier methods (condom, diaphragm, or cervical cap), or abstinence.

Patients with brain metastases.

Patients with an active second malignancy (excluding treated skin cancers or carcinoma in-situ) will be ineligible.

Patients with a life expectancy reasonably estimated at less than 6 months.

Patients may be excluded at the discretion of the PI if it is deemed that allowing participation would represent an unacceptable medical or psychiatric risk.

History of splenectomy

Allergy to eggs

Several exclusion criteria are specific to vaccinia administration:

The recombinant vaccinia vaccine should not be administered if the following apply to either recipients or, for at least two weeks after vaccination, to their close household contacts (Close household contacts are those who share housing or have close physical contact):

• Persons with active or a history of eczema or other eczematoid skin disorders
• Persons with other acute, chronic or exfoliative skin conditions (e.g., atopic dermatitis, burns, impetigo, varicella zoster, severe acne or other open rashes or wounds) until condition resolves;
• Pregnant or nursing women
• Children under 3 years of age;
• Immunodeficient or immunosuppressed persons by disease or therapy, including HIV infection.
• History of seizures, encephalitis, or multiple sclerosis
• History of allergy or complications with past vaccinia vaccination.