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 fianlimab, cemiplimab, or relatlimab+nivolumab. The registry lists allocation as randomized. This study is researching an experimental drug called fianlimab (also known as REGN3767), combined with another medication called cemiplimab (also known as REGN2810), called "study drugs".
They plan to enroll about 560 people at 113 sites. Taking part typically means taking a study drug (or dummy pill) plus check-ins.
Official title (unrewritten)
A Phase 3 Study of Fixed Dose Combinations of Fianlimab and Cemiplimab Versus Relatlimab and Nivolumab in Participants With Unresectable or Metastatic Melanoma
Interventions: fianlimab, cemiplimab, relatlimab+nivolumab
Primary outcome (registry wording): Objective response rate (ORR) per Response Evaluation Criteria in Solid Tumors (RECIST) version 1.1 based on blinded independent central review (BICR)