5-Fluorouracil Combined With CoFactor (5-10 Methylenetetrahydrofolate) in Treating Advanced Breast Cancer Patients

• Status: Unknown status
• Trial end date: 1969-12-31
• Target enrollment: 0
• Participant gender: Female

Summary

A multi-center, open-label, single-arm Phase II trial assessing the efficacy and safety of weekly bolus infusions of 5-fluorouracil combined with CoFactor (5-10 methylenetetrahydrofolate) in advanced breast cancer patients who failed anthracycline and taxane chemotherapy regimens.

• Phase: Phase 2
• Accepts Healthy Volunteers?: No

Details

• Lead Sponsor: Mast Therapeutics, Inc.
• Treatments: Fluorouracil; Tetrahydrofolates

Criteria

Inclusion Criteria:

• Signed informed consent.

• Women with a histologically/cytologically proven diagnosis of advanced adenocarcinoma of the breast.

• Measurable disease. At least one unidimensionally measurable non-bony lesion with a diameter >=10 mm using spiral CT scans (use of spiral CT must be documented in medical records and used consistently throughout the study) or >= 20 mm using conventional CT or MRI scans outside the irradiated area according to RECIST criteria.

• Patients having failed both prior anthracycline and taxane derivative chemotherapy regimens. Anthrocycline and Taxane failure definitions as defined in the protocol.

• No more than two prior chemotherapy regimens for advanced disease.

• Performance status (ECOG) <= 2 or Karnofsky >= 70

• Age >= 18 years.

• Life expectancy >= 12 weeks.

• Adequate organ function as shown by the following:

1. WBCs >= 3.0 x 109/L, absolute neutrophil count (ANC)>= 1.5 x 109/L, platelets >= 100 x 109/L, hemoglobin >= 9 g/dL

2. Bilirubin <= 1.25 x the upper limit of normal (ULN),aspartate aminotransferase(AST or alanine aminotransferase(ALT),= 3 x ULN (or <= 5 x ULN in case of liver metastases)

3. Serum calcium within normal limits

4. Serum albumin within the normal range for the study site

5. Creatinine clearance >= 60 mL/min (Cockroft and Gault)

6. Left ventricular ejection fraction (LVEF) within normal limits as shown by echocardiography or scintigraphy (multiple-gated acquisition scan).

• Patients of childbearing potential must be using medically acceptable contraception for 4 weeks before start of study treatment and 4 months after study treatment completion. Patients of childbearing potential must have a negative pregnancy test result within 7 days prior to study treatment initiation.

• Patients with parenchymal brain metastases must be either adequately controlled following resection or completed appropriate radiation therapy and be receiving a stable corticosteroid dose prior to study entry. Patients with leptomeningeal involvement should not be included in the study.

Exclusion Criteria:

• Her2/neu positive tumor (2+ or 3+).

• Pregnancy or lactation

• Systemic cytotoxic anti-cancer therapy within <=4 weeks of study entry, or 6 weeks if the systemic therapy contains a nitrosourea or mitomycin C. Hormonal anti-cancer treatment must be ongoing, or must have been discontinued >3 months before study entry.

• Prior 5-FU- and/or capecitabine-based palliative chemotherapy.

• Extensive prior radiotherapy affecting more than 30% of bone marrow reserves, or bone marrow / stem cell transplantation.

• Participation in clinical studies of non-approved experimental agents or procedures within <=4 weeks of study entry.

• History of other malignancy, unless cured and the patient has been disease-free for >=2 years. Patients with a history of cervical carcinoma in situ or cured stage I cervical cancer, or of epidermal or basal cell skin cancer, may be eligible for enrollment after discussion with the sponsor.

• Previous unexpected reaction to fluoropyrimidines, with or without documented deficiency of dihydropyrimidine dehydrogenase, or known hypersensitivity to 5-FU.

• Psychologic, familial, sociologic or geographic conditions which do not permit compliance with the study protocol and/or study.

• Significant cardiac disease, including symptomatic ventricular arrhythmia, congestive heart failure, myocardial infarction within 12 months before study entry.

• Concomitant treatment with any experimental drug or anti-cancer drug, except hormone therapy or bisphosphonates.