GSK terminates its Alector pact after back-to-back Phase 2/3 flops in dementia and Alzheimer's, leaving Alector's pipeline preclinical-only.

Clinical setbacks derailed what was once a potentially $2.2 billion deal that marked GSK's return to neuroscience.

GSK terminates its Alector pact after back-to-back Phase 2/3 flops in dementia and Alzheimer's, leaving Alector's pipeline preclinical-only.