Breast cancer is the most common cancer facing Australian women and the third highest cause of death among Australian women aged 45–64. One in eight women and one in 715 men will be diagnosed with breast cancer in their lifetime. More women are surviving breast cancer. In 1994 about 76% of women diagnosed with breast cancer were still alive five years after diagnosis. Today, the five-year survival rate is 90%. There are more than 65,976 people living with a breast cancer diagnosis. Breast cancer spreading to other organs (metastasis) is the main cause of death from breast cancer. The survival rate of women who have metastatic breast cancer at first diagnosis is alarmingly low, with only one in four (a quarter) of women still alive five years after diagnosis. In Australia, about 20–30% of women diagnosed with early stage breast cancer will go on to develop metastatic breast cancer.