What this phase means
Phase 3: this treatment already looked useful in smaller studies. Now it is tested in a large group, often against standard care or a dummy treatment, to see if it should be approved.
Phase labels are FDA/ICH categories applied to the registry Phase field. They are not a finding that this study succeeded.
What the registry says happens
If you join, the listed intervention(s) are Rina-S, or IC. The registry lists allocation as randomized. This study wants to compare how well Rina-S (GEN1184) works compared to treatment of physician's choice (paclitaxel or doxorubicin) that are considered standard medical care for the treatment of recurrent or progressive endometrial cancer (EC) following prior therapy.
They plan to enroll about 660 people at 176 sites. Taking part typically means taking a study drug (or dummy pill) plus check-ins.
Official title (unrewritten)
A Phase 3 Randomized, Open-label Study of Rinatabart Sesutecan (Rina-S) Versus Treatment of Investigator's Choice (IC) in Patients With Endometrial Cancer After Platinum-Based Chemotherapy and PD(L)-1 Therapy
Interventions: Rina-S, IC
Primary outcome (registry wording): Progression-free Survival (PFS) per Response Criteria in Solid Tumors (RECIST) v1.1, as Determined by Blinded Independent Central Review (BICR)