Living with cancer longer is possible due to better cancer treatments but these treatments can damage the cardiovascular system. This can happen in up to 15-20% of people receiving treatment for breast and other aggressive cancers. The purpose of this project is to develop a state-of-the-art database system, called the CArdiotoxicity Prevention Research Investigation (CAPRI). The database system will include heart imaging, blood samples, heart electrical tracings, hospital visits, and all medications including cancer chemotherapy treatments. The project will also develop a questionnaire that asks all breast cancer patients about their heart health, their family history, and lifestyle such as exercise. This information inside the database system will allow the CAPRI Team to identify people at high, medium, or low risk of heart damage. This initiative will create a framework to predict, detect, and treat these effects, so that people who have survived cancer can feel well and have a long healthy life free of heart disease after their treatments.