Results of the Belgian expanded access program of eribulin in the treatment of metastatic breast cancer closely mirror those of the pivotal phase III trial

Eribulin was active in MBC patients with a high tumour burden and predominant visceral disease. Safety profile was similar to what was reported in the phase III trials. Prophylactic granulocyte colony-stimulating factor administration allowed optimal dose intensity and could have contributed to the recorded response rate. Activity is sustained after treatment with taxanes and vinorelbine. The recently investigated combination of eribulin and trastuzumab should lead to higher activity in HER2-positive MBC.