Alzheimer's Disease Clinical Trial
Official title:
An Open Label Positron Emission Tomography (PET) Study to Investigate the Brain Biodistribution of 18F-GSK2647544 in Healthy Subjects
This is an open label, PET study in healthy male subjects to determine if GSK2647544 is able to cross the blood-brain-barrier. The study will use GSK2647544 radiolabelled with fluorine-18 ([18F] GSK2647544) to determine the ratio of the concentration of the compound in tissue to that in plasma at equilibrium, expressed as the PET volume of distribution (VT). The study will consist of at least four visits; 2 screening visits, scanning day and follow-up. On Day 1 (scanning day) the subject will receive a single oral dose of GSK2647544 (100 mg) followed approximately 2 hours later by a single intravenous (IV) infusion of [18F]-GSK2647544 and a dynamic PET scan. Arterial and venous blood sampling will be used to determine the plasma kinetics of [18F]-GSK2647544 and unlabeled GSK2647544. In addition, each subject will undergo a structural magnetic resonance imaging (MRI) scan of the brain to aid in the definition of neuroanatomy. The dose of GSK2647544 was selected based on the review of the safety, tolerability, pharmacokinetics (PK), and pharmacodynamic (PD) data obtained in the first time in human (FTIH) study.
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