Greg Cantwell was 30 years old when he was diagnosed with a glioblastoma multiforme (GBM), a primary brain tumor. Even though Greg had the support from his family and friends, he didn't know anyone that could relate to his fight or who had conquered the same type of cancer. Since founding his non-profit, Greg's Mission, in 2012, he has helped over 1,700 patients, families and caregivers to navigate the brain tumor journey.