 This study will be a randomised, double-blind sponsor open, placebo-controlled, single centre, single dose escalation study of s.c. administrations of GSK2330811 in healthy subjects. Approximately 40 subjects will be enrolled in the study, across 5 cohorts. Each cohort is planned to consist of 8 subjects, randomised such that 6 subjects will receive GSK2330811 and 2 subjects will receive placebo. 