A trial looking at genetic factors that affect how breast cancer grows and develops (GENFABRCA)

This study was looking at genetic factors that might affect how breast cancer cells develop, grow and respond to treatment.

Many breast cancers respond very well to treatment. But this is not always the case and sometimes breast cancer comes back. Doctors want to understand more about why this happens.

In this study, researchers were looking at differences in genes from women with advanced breast cancer. The aim of the study was to try and find out how genetic factors may affect

• How breast cancer develops

• Why some breast cancers grow more quickly than others

• How well different breast cancers respond to treatment

In the long term this may help doctors improve the treatment for breast cancer.