AZD1446

Study to Investigate the Efficacy and Tolerability of AZD1446 in Adult ADHD Patients.

To Evaluate Effects of AZD1446, Placebo and Donepezil in Patients With Alzheimer's Disease

A Study to Assess the Safety, Tolerability and Pharmacokinetics of Modified-Release Formulations of AZD1446 After Oral Single and Repeated Doses

A Bioavailability Study Comparing Modified-release Capsules and Immediate Release Capsules in Fed and Fasting Conditions

4 Week, Safety and Tolerability Study in Patients With Mild to Moderate Alzheimer's Disease

Study to Assess Safety, Tolerability and Pharmacokinetics After Single and Multiple Doses of AZD1446 to Japanese Subject

A Healthy Volunteer Study to Evaluate Reversibility of Induced Impairment of Cognition

A Study to Investigate Safety, Tolerability and Pharmacokinetics of AZD1446 Administered for 4 Weeks in Elderly Healthy Volunteers

Study to Investigate Safety, Tolerability and Pharmacokinetics With Single and Multiple Ascending Doses of AZD1446

Positron Emission Tomography (PET) Study

Study to Assess Safety, Tolerability and Pharmacokinetics After Single Doses of AZD1446 to Healthy Volunteers