Role of dose-dense chemotherapy in high-risk early breast cancer.

Abstract

Adjuvant chemotherapy for breast cancer significantly reduces the risk of recurrence and improves overall survival (OS). The purpose of the current article is to review available evidence on dose-dense chemotherapy, also focusing on special population, including premenopausal women and those with HER2-positive disease. A recent patient-level meta-analysis showed that the use of dose-dense chemotherapy is associated with significant reduction in disease recurrence, breast cancer mortality and improvement in OS. The benefit of dose-dense chemotherapy is irrespective from HER2 status, although women with HER2-positive disease enrolled in trials included in the meta-analysis did not receive the current standard of treatment with anti-HER2 agents. Among premenopausal women, dose-dense chemotherapy improved OS, and thus should be considered standard of care for them. In conclusion, high-risk early stage breast cancer patients should be treated with (neo)adjuvant dose-dense anthracycline-based chemotherapy followed by paclitaxel. In the era of trastuzumab, the benefit of dose-dense chemotherapy is still unclear for patients with HER2-positive breast cancer.