This work package focuses on the privacy-compliant use of ELGA-standardized data and draws on high-quality data sets from established research activities. It aims to give citizens and patients the opportunity to give additional consent for the use of their ELGA data in connection with existing research contexts. 1) The work package investigates the feasibility of integrating existing biobank data with ELGA data for colorectal cancer in order to improve biomarker research in the future. 2) The potential for integrating data from the private practice sector into an existing integrated care register for heart failure patients will be examined in order to expand the scope and benefits of the register.