Utidelone Versus Docetaxel in HER2-negative Locally Advanced or Metastatic Breast Cancer

Eligible patients will receive treatment with utidelone(40 mg/ m2 /day, D1-5,Q3W) , treated until disease progression, unacceptable toxicity or patient request for withdrawal, whichever occurs first. Each cycle is 3 weeks in duration.

Eligible patients will receive treatment with docetaxel (75mg/ m2/day, D1, Q3W) , treated until disease progression, unacceptable toxicity or patient request for withdrawal, whichever occurs first. Each cycle is 3 weeks in duration.