Results With a median follow-up of 17mo (range 0-9yr), the median OS for the entire cohort of 766 pts was 15mo, with a 2-yr OS of 41%. Of the 80 pts with OS ≥2 yrs post-Ipi for whom data are available, 75% (n = 60/80) remain alive and 30% (n = 24/80) remain progression-free following Ipi, with median Ipi disease control of 15mo (range: 3 to 107 +mo). Among pts with progression (n = 56), 57% exhibited disseminated progression, 29% oligometastatic progression, and 15% CNS-only progression. The most frequent Tx at first progression was locoregional (n = 29), employed at a median of 11mo post-Ipi (range: 3 to 55mo) and associated with median 15+mos disease control (range 1 to 73+mo) (table 1). In pts requiring post-Ipi systemic Tx, long-term disease control was observed across multiple systemic Tx’s (table 2).