Study to Assess the Safety, Tolerability, Pharmacokinetic (PK) and Pharmacodynamic (PD) Effects of EVP-6308 and the Potential of EVP-6308 to Affect the PK Properties of the Antipsychotic Regimen in Subjects With Schizophrenia Currently Receiving Stable Treatment With up to 2 Atypical Antipsychotics

A Double-Blind, Escalating Dose Safety, Tolerability, Pharmacokinetic, and Pharmacodynamic Evaluation of Repeat Doses of EVP-6308 or Placebo in Subjects With Schizophrenia on a Stable Antipsychotic Regimen

This is a randomized, double-blind, placebo-controlled, sequential cohort, ascending oral dose study of the safety, tolerability, pharmacokinetics, and pharmacodynamics of EVP-6308 administered for 14 days in subjects with schizophrenia who are on a stable anti-psychotic regimen.

Inclusion Criteria:

• Diagnosed with schizophrenia, male or female subjects, 18 to 60 years of age

Exclusion Criteria:

• Clinically significant abnormalities on physical examination, medical history, ECG, vital signs, laboratory values, or unstable medical or psychiatric illness
• Any disorder that may interfere with drug absorption
• Clinically significant allergy or sensitivity to medications Positive test for human immunodeficiency virus (HIV) antibodies, Hepatitis B surface antigen, or Hepatitis C antibody
• Pregnant or breast feeding