Safety and Cognitive Function Study of EVP-6124 in Patients With Mild to Moderate Alzheimer's Disease

This is a randomized, double-blind, placebo-controlled, parallel, 24-week, Phase 2
safety/efficacy study in which three dose levels of EVP-6124 or placebo will be evaluated.
Eligible for enrollment will be patients who meet clinical criteria for mild to moderate
probable Alzheimer's disease who are either receiving treatment with AChEI medication at a
stable dose or who are not presently taking any AChEI or memantine co-medication.

Patients will be randomized to one of the following groups: 0.3 mg, 1 mg or 2 mg or Placebo.
Approximately 400 subjects will be randomized to the 4 treatment groups. Study drug will be
supplied as capsules and will be orally administered once daily for a total of 24 weeks.

Inclusion Criteria:

- Subjects with Probable Alzheimer's disease

- Mini-Mental State Examination (MMSE) score of 14 to 24 inclusive at screening and a
CDR-SB score ≥2 at the screening assessment

- Modified Hachinski Ischemic Score (mHIS) ≤4 at screening

- Female subjects are ≥1 year post-menopausal or are surgically sterile

- Caregiver available; if not living in the same household, caregiver sees subject at
least four times each week

- Subject living at home, senior residential setting, or an institutional setting
without the need for continuous nursing care

- General health status acceptable for participation in a 24 week clinical trial be
administered

Exclusion Criteria:

General

- Participation in another therapeutic clinical trial within 30 days before Baseline

- Prior participation in an amyloid vaccination clinical study

- Inability to swallow capsules

- Likely inability to complete 24 week study

- Inability to be ≥75% compliant with single-blind placebo run-in medication

- Inability to adequately perform cognitive tests

- History of significant cardiovascular disease

- Major depression

- Psychosis

- History of stroke within 18 months of screening

- Head trauma

- Inability to perform any screening or baseline evaluations