This research service provides an introduction to systemic lupus erythematosus (SLE), disease classification and diagnosis. Research in this report overviews the current status of SLE pipeline candidates with a focus on current Phase 3 candidates, detailed timelines with accrual rate and approval estimates for U.S. and European markets, ranking of the approval likeliness for current Phase 3 candidates, rationale for pivotal program design, Phase 2 data review, and KOL commentary. A pipeline assessment is provided for all active SLE candidates in development.