This is a Phase 3, multicentre, multinational, randomised, double-blind, placebo-controlled extension study to characterising the long term safety and tolerability of of an intravenous treatment regimen of anifrolumab versus placebo in subjects with moderately to severely active systemic lupus erythematosus who completed a Phase 3 study (D3461C00004 or D3461C00005) through the 52-week double-blind treatment period.
The purpose of this study is to characterise long-term safety and tolerability of intravenous anifrolumab.