Study to investigate safety, tolerability and pharmacokinetics of AZD2423 multiple doses in healthy volunteers

Inclusion Criteria

• - Provision of signed and dated, written informed consent prior to any study specific procedures
• - Healthy male and non-fertile female subjects aged ≥20 to ≤55 years inclusive and healthy male and female subjects aged ≥65 to ≤80 years inclusive with suitable veins for cannulation or repeated venepuncture.
• - Have a body mass index (BMI) between ≥18 and ≤30 kg/m2, as calculated by the investigator, and weigh at least 50 kg and no more than 100 kg.
• - Clinically normal physical findings including supine blood pressure, pulse rate, ECG, and laboratory assessments in relation to age, as judged by the investigator. In addition, normal ophthalmoscopy is required for the CSF panel subjects (Part 2).