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 T-Bren, Dose level 1, T-bren, Dose level 2, or Gemcitabine + Platinum Based Chemotherapy (Cisplatin or Carboplatin). The registry lists allocation as randomized. The objective of the study is to measure the how well it works and safety of T-bren in participants with HER2 expressing metastatic UC with progression on or after anti-PD-(L)1-based therapy.
They plan to enroll about 520 people at Macon. Taking part typically means taking a study drug (or dummy pill) plus check-ins.
Official title (unrewritten)
A Phase 3 Open-Label, Randomized Controlled Trial of T-bren (BL M07D1) vs. Platinum-based Chemotherapy in Patients With HER2 Expressing Metastatic Urothelial Cancer With Disease Progression on or After Anti-PD-(L)1-based Therapy
Interventions: T-Bren, Dose level 1, T-bren, Dose level 2, Gemcitabine + Platinum Based Chemotherapy (Cisplatin or Carboplatin)
Primary outcome (registry wording): Progression-Free Survival (PFS)