The invention relates to a method of treatment of metastatic breast cancer in a patient progressing after a previous anthracycline and/or taxane treatment, said method comprising administering to said patient a combination of antitumor agents comprising cabazitaxel and capecitabine, wherein each of said antitumor agents, independently, may be in the form of a base, in the form of a pharmaceutically acceptable acid salt or in the form of a hydrate or solvate.