Study of 3-Day Partial Breast Radiation Therapy in Women With Breast Cancer — StellaPhase 2 — Testing in a larger group (up to a few hundred people) to further evaluate safety and begin to assess effectiveness.
Trial locations(9 sites)
United States
Norwalk Hospital, Norwalk, Connecticut Baptist Alliance Miami Cancer Institute, Miami, Florida Memorial Sloan Kettering Basking Ridge, Basking Ridge, New Jersey Memorial Sloan Kettering Monmouth, Middletown, New Jersey Memorial Sloan Kettering Bergen, Montvale, New Jersey Memorial Sloan Kettering Commack, Commack, New York Memorial Sloan Kettering Westchester, Harrison, New York Memorial Sloan Kettering Cancer Center, New York, New York Memorial Sloan Kettering Nassau, Uniondale, New York Last updated September 2025