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 Trontinemab, or Placebo. The registry lists allocation as randomized. This study will measure the how well it works and safety of trontinemab in participants with biomarker evidence of Alzheimer's Disease (AD) pathology but with no cognitive or functional impairment, who are at risk for progression to mild cognitive impairment (MCI) due to AD or dementia due to AD.
They plan to enroll about 1,600 people at 72 sites. Taking part typically means taking a study drug (or dummy pill) plus check-ins.
Official title (unrewritten)
A Phase III, Multicenter, Randomized, Double-Blind, Placebo-Controlled, Parallel-Group Efficacy and Safety Study of Trontinemab in Cognitively Unimpaired Individuals at Risk for Progression to Symptomatic Alzheimer's Disease
Interventions: Trontinemab, Placebo
Primary outcome (registry wording): Time to Progression, defined as confirmed Clinical Dementia Rating - Global Score (CDR-GS) > 0