Tamoxifen benefits women who have had invasive breast cancer, community study finds

Women with invasive breast cancer should be encouraged to complete the full course of oestrogen blocking drugs to lower the risk of developing cancer in the other breast, researchers have said.

Their retrospective cohort study, published in JAMA Oncology, showed that treating women with invasive breast cancer with tamoxifen or aromatase inhibitors could lower the risk of contralateral breast cancer, especially among women whose breast cancer was oestrogen receptor positive.1

The study, which was the first to be carried out in a general community …