A First in Human Study to Evaluate the Safety, Tolerability, Pharmacokinetics and Pharmacodynamics of a Intravenous (IV) Dose of GSK2831781 in Healthy Volunteers and Patients With Plaque Psoriasis

GSK2831781 (100 milligram (mg)/mL) and its dilutions (Diluent - 0.9 percent saline solution containing 0.015 percent Polysorbate 80) as clear or opalescent, colourless, yellow to brown liquid solution administered by IV over approximately 2 hours.

Commercial saline solution administered by IV over approximately 2 hours