Calls to test for gene cause of breast cancer that hit BBC’s Victoria Derbyshire and Angelina Jolie

A new study suggests some cases are hereditary and caused by a faulty gene, meaning tests could have the potential to identify women at risk of the disease, even before the cancer starts to grow. A new study suggests some cases are hereditary and caused by a faulty gene, meaning tests could have the potential to identify women at risk of the disease, even before the cancer starts to grow.