We are a preclinical stage biopharmaceutical company focused on creating precisely targeted therapies for patients with cancer. We focus our discovery efforts on small molecule inhibitors of kinases, a class of cellular targets that can play a central role in cancer growth and proliferation. In particular, we focus on “clinically proven” kinase targets, or those for which therapies have been developed by others to target those kinases, and that such drugs have demonstrated sufficient clinical efficacy and safety data to be approved by the United States Food and Drug Administration, or FDA, or similar regulatory agency and are established and used in the clinical setting. We leverage our team’s deep expertise in chemistry and structure-based drug design to develop innovative small molecules that are designed to overcome the limitations of those existing therapies. These limitations can include kinase resistance, or the emergence of new mutations in the kinase target that can enable resistance to existing therapies, kinase selectivity, or the potential for existing therapies to inhibit other structurally similar kinase targets and lead to off-target adverse events, and limited brain penetrance, or the ability for the therapy to treat disease that has spread or metastasized to the brain. By prioritizing target selectivity, we believe our drug candidates have the potential to overcome resistance, minimize adverse events, optimize brain penetrance to address brain metastases, and drive more durable responses.