The Rare Tumor Initiative is an ambitious effort to address the unique challenges posed by rare cancers. These cancers, often defined as those affecting fewer than 200,000 people in the United States, represent a significant portion of all cancer cases. Despite their prevalence, rare tumors have historically received less attention and research funding compared to more common cancers. The initiative aims to bridge this gap by fostering collaboration between researchers, clinicians, and patients to improve diagnosis, treatment, and outcomes.