Roche’s Trontinemab Shows Breakthrough Amyloid Clearance in Early Alzheimer’s Trial
SHERIDAN, WYOMING – July 29, 2025 – Roche has unveiled compelling early-stage data for its next-generation Alzheimer’s therapy, trontinemab, which demonstrated rapid and deep amyloid plaque clearance in patients after just seven months of treatment. The findings, presented at the 2025 Alzheimer’s Association International Conference in Toronto, suggest a potential leap beyond first-generation FDA-approved antibodies and set the stage for a new class of blood-brain barrier-penetrating biologics.
Trontinemab achieves over 90% amyloid clearance in seven months
In the Phase Ib/IIa Brainshuttle AD trial, 91% of participants receiving the highest dose of trontinemab (3.6 mg/kg) became amyloid-negative on PET scans within seven months. Notably, 72% achieved "deep clearance" on standardized plaque rating scales—a level of response that typically requires over 18 months with currently approved therapies.