This is Episode 6, and we are kicking off our new mini-series on Low-Grade Gliomas. Today's episode is titled: "LGG P1: Foundations, Risk Stratification & The Timing Debate."For years, the management of WHO Grade II gliomas has been one of the most debated topics in neuro-oncology. These tumors often occur in young, otherwise healthy individuals and have a long natural history, making the decision of when to intervene complex. Today, we will lay the foundation for managing these tumors by first establishing their modern molecular definition, then learning how to use the Pignatti risk factors to stratify patients, and finally, we will dissect the landmark evidence that answers the central, controversial question: Should we treat now, or can we safely watch and wait?