Dr Kotryna Temcinaite, senior research communications manager at Breast Cancer Now, said:
“Understanding how we can keep incurable breast cancer under control when it stops responding to existing treatments is vital to help more people live longer with the disease.
"These encouraging results suggest a new way to treat patients with advanced ER positive HER2 negative breast cancer, giving them precious extra time with their loved ones before the disease progresses.
"We hope that people can start benefiting from this treatment combination as soon as possible.”