Matt Dun, a biomedical scientist and co-founder of the charity RUN DIPG, shares his heart-wrenching journey of seeking treatments for his daughter, Josie, who was diagnosed with terminal brain cancer. He discusses his transition from researching childhood leukemia to focusing on DIPG, the emotional struggles of a parent in crisis, and the solace he found in running. Matt highlights the importance of innovative therapies, fundraising efforts, and creating family traditions that celebrate Josie's memory while fighting for hope and advocacy in the battle against pediatric brain cancer.