Sierra Oncology is a late-stage biopharmaceutical company on a quest to deliver targeted therapies that treat rare forms of cancer. Sierra Oncology harnesses its deep scientific expertise to identify compounds that target the root cause of disease to advance targeted therapies with assets on the leading edge of cancer biology. Its team takes an evidence-based approach to understand the limitations of current treatments and explore new ways to change the cancer treatment paradigm. Sierra Oncology is transforming promise into patient impact.