A study to help decide if women with breast cancer should have further treatment (EndoPredict)

This study is looking at a new test called EndoPredict to help women with breast cancer decide if they should have chemotherapy after surgery.

The study is open to women with early breast cancer that had hormone receptors on their cancer and meant that they could have hormone treatment. The hormone receptors these cancers had were oestrogen receptors. This type of breast cancer is called oestrogen receptor positive ().