This is a Phase 2 study to see if an investigational drug, ANG1005, can shrink tumor cells in breast cancer patients with recurrent brain metastases.

Inclusion Criteria:

1. ≥ 18 years old
2. Breast cancer
3. Recurrent brain metastases from breast cancer
4. At least one radiologically-confirmed and measurable metastatic brain lesion ( ≥ 0.5 cm)
5. Neurologically stable
6. Karnofsky Performance Status (KPS) score ≥ 70
7. Adequate hematology and serum chemistry laboratory test results
8. Expected survival of ≥ 3 months

Exclusion Criteria:

1. Prior treatment with ANG1005/GRN1005
2. Evidence of symptomatic intracranial hemorrhage
3. Pregnancy or lactation
4. Inadequate bone marrow reserve
5. Any evidence of severe or uncontrolled diseases
6. Patients with the presence of an infection including abscess or fistulae, or known infection with hepatitis B or C or HIV
7. History of interstitial lung disease or evidence of clinically significant interstitial lung disease
8. Severe cardiac conduction disturbance
9. Central nervous system (CNS) disease requiring immediate neurosurgery intervention
10. Known severe hypersensitivity or allergy to paclitaxel or any of its components