The workshop "Stratification biomarkers in personalised medicine" that was held at the European Commission in Brussels on 10th and 11th June 2010 brought together experts from different fields and perspectives in order to stimulate an open discussion about the evolution of this rapidly expanding area, in which biomarkers are used to adapt therapies to the characteristics of patient populations. The purpose of the workshop was to clarify the scope for stratification biomarkers and to identify barriers in the process from biomarker discovery to their use in clinical trials and in medical practice. It aimed at building a.