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 MB11 (Proposed Nivolumab Biosimilar), EU-Opdivo®, or US- sourced Opdivo®. The registry lists allocation as randomized. This is a randomly assigned, multicentre, multinational, neither you nor the study doctors know who gets the real treatment, integrated study to sompare the pharmacokinetics, how well it works, safety, and immunogenicity of MB11 versus Opdivo® in subjects with previously untreated advanced (unresectable or Metastatic) Melanoma
They plan to enroll about 632 people at 86 sites. Taking part typically means taking a study drug (or dummy pill) plus check-ins.
Official title (unrewritten)
Randomised, Multicentre, Multinational, Double-Blind Integrated Study to Compare the Pharmacokinetics, Efficacy, Safety, and Immunogenicity of MB11 (Proposed Nivolumab Biosimilar) Versus EU-/US-Opdivo® in Subjects With Previously Untreated Advanced (Unresectable or Metastatic) Melanoma (LEON Study)
Interventions: MB11 (Proposed Nivolumab Biosimilar), EU-Opdivo®, US- sourced Opdivo®
Primary outcome (registry wording): To demonstrate the Pharmacokinetic (PK) bioequivalence between MB11 and EU/ US-Opdivo.