Information for Patients and Public

Breast cancer comes in different types and several different factors affect the response to treatment. From studies involving many thousands of women we know that the response to treatment is affected by the size and type of the cancer at diagnosis and whether the cancer has spread to involve lymph nodes. We also know that whether or not the cancer expresses markers such as the estrogen receptor (ER), HER2 and KI67 are important.

How each of these factors contribute to the success of treatment is not fully understood. Since we are all slightly different the answers that PREDICT provides can only ever be an estimate based on our current knowledge. However, there is enough information from the many thousands of women who have been treated to allow us to make a very good estimate how any one woman may respond to additional treatment.