Metastatic Breast Cancer

Metastatic breast cancer (MBC) is an advanced stage (stage IV) of breast cancer where tumor cells have spread to other parts of the body,such as the bones, liver, lungs or brain. Most breast cancer deaths are a result of metastasis.

In the 1970s, only 10 percent of women survived five years after a diagnosis of MBC. Today, because of research and the discovery of new and more-effective treatments, this has increased to an average of 25 percent. While MBC is treatable, it is not currently curable. This is, in part, because we do not know what causes cancer cells to spread. Komen is dedicated to understanding why metastasis occurs and how to stop it, and has invested nearly half of new research funding for 2015 in metastatic breast cancer research.

In addition to research, Komen is a founding member of the Metastatic Breast Cancer Alliance – more than 30 organizations working to unify efforts to improve the lives and outcomes for those living with MBC.


Read about: Development of Lymphoseek

Read about: Circulating tumor cells

For more information about metastasis, click here.