Efficacy And Safety Of CX516 In Elderly Participants With Mild Cognitive Impairment.

Exclusion Criteria

• •Any significant neurologic disease (other than suspected incipient Alzheimer's disease), such as Parkinson's disease, stroke, TIA's, multi-infarct dementia, Huntington's disease, head trauma, chronic CNS infection.
• •History of major depression or another major psychiatric disorder within the past 6 months.
• •History of schizophrenia, mania or recurrent psychotic episodes.
• •History of alcohol or DSM IV-diagnosed substance abuse or dependence disorder within the past year.
• •History of blackout, epilepsy or seizures, or an abnormal EEG as judged by the Investigator and considering the age of the participant.
• •Any clinically significant hepatic, renal, cardiovascular, pulmonary, gastrointestinal or hematological illness or unstable medical condition which could interfere with drug safety, or absorption, distribution, metabolism and excretion, or lead to difficulty complying with the protocol.