This use demonstrates how Maxis Clinical Sciences leverages Real World Evidence (RWE) to develop innovative health economic models for metastatic breast cancer. These models include partial survival states to better assess value and make decisions. It highlights our expertise in combining different RWE sources using advanced modeling methods, and improving pricing and reimbursement decisions for novel cancer/oncology treatments. We aim to give a more detailed and exact representation of treatment value helping biopharmaceutical companies make the best use of resources and produce relevant real-world economic evidence throughout the product lifecycle.