Sean’s Patient Story Sean, a healthy 20-year-old, suffered a seizure on 9/24/2020, leading to the discovery of a brain tumor later diagnosed as high-grade glioma. Despite the grim diagnosis, Sean’s life was transformed by immunotherapy, which played a crucial role in his successful treatment. June is Cancer Immunotherapy Month! Click below to check out our content-filled Cancer Immunotherapy Month™ calendar, where we will educate the public about immunotherapy, raise awareness, and fuel vital fundraising efforts in the fight against cancer. Explore the Calendar Donate