Roche's Alzheimer's Comeback Signals a New Competitive Phase for Disease-Modifying Therapies
SHERIDAN, WYOMING - December 2, 2025 - After years of volatility in Alzheimer's R&D, Roche's re-emergence with positive early data for trontinemab is reshaping expectations for the next competitive cycle in disease-modifying therapies, signaling that big pharma is not done pushing for better outcomes in this high-risk, high-need market.
From Aduhelm's fallout to a more mature Alzheimer's market
The modern Alzheimer's era was defined-some would say scarred-by the 2021 approval of Biogen and Eisai's Aduhelm, a controversial and costly monoclonal antibody that ultimately failed to deliver convincing clinical benefit and was later withdrawn. The backlash damaged Biogen's reputation and, for a time, cast doubt on the entire amyloid-directed approach, raising questions about regulatory standards and payer willingness to back expensive, marginally effective therapies.