Efforts to develop effective therapies to treat Alzheimer’s disease have been stymied by a long history of clinical failures. Those disappointments have included two, late-stage failures of AC Immune’ Crenezumab, which the company is developing with it partner Roche. The two companies are continuing to pursue the drug under the belief that treating patients earlier in the progress of the disease will be critical. We spoke to Andrea Pfeifer, CEO of AC Immune, about the company’s efforts to identify and treat Alzheimer’s at its earliest stages, its efforts to develop a vaccine against the condition, and why she believes the future of Alzheimer care will involve combination therapies similar to what has emerged in the area of cancer.