AstraZeneca, Daiichi Sankyo and Gilead have made big advances in treating the hardest-to-tackle type of breast cancer, boosting prospects for tens of thousands of patients a year.
The drugmakers are unveiling trial results for existing blockbuster drugs in “triple negative” breast cancer — so-called because it is not one of the three main types. These include the first ever study showing a medicine can extend the life of patients who cannot be treated with immunotherapy drugs, the majority of triple negative cases.
Patients with triple negative breast cancer make up about 10 per cent to 20 per cent of people diagnosed. Breast cancer is the most common type of the disease in the UK, and the second most common after skin cancer in the US.