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AC Immune Initiates Final Cohort in Ongoing Phase 1b/2 ABATE Trial of Anti-Abeta Active Immunotherapy to Treat Alzheimer's Disease

$ACIUPress releaseApr 30, 2026, 7:00 AM ETRead the release

AC Immune dosed the first patients in Cohort AD4 of the Phase 1b/2 ABATE trial, triggering a $12 million milestone payment from partner Takeda. The trial evaluates ACI-24 for Alzheimer's prevention, with 12-month data from earlier cohorts expected in Q2 2026.

Key figures

Drug Name
ACI-24
Phase Of Trial
Phase 1b/2
Cohort ad4 initial patients
36
Prior cohorts total patients
74
Cohort ad4 potential total patients
112

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