RADIANT: Pre-op Radiation With Abemaciclib and Letrozole — StellaPhase 1 — Early testing in a small group of people (usually 20–80) to evaluate safety, determine safe dosage, and identify side effects.
Trial locations(4 sites)
United States
RWJBarnabas Health Clara Maas Medical Center, Belleville, New Jersey Cooperman Barnabas Medical Center, Livingston, New Jersey Rutgers Cancer Institute of New Jersey, New Brunswick, New Jersey RWJBarnabas Health - Robert Wood Johnson University Hospital Somerset, Somerville, New Jersey Last updated November 2025