Fig. 1.

Participant flow diagram. ISN/RPS classification reported for renal biopsies. *Box ticked on the BILAG case report form that the patient had ‘histological evidence of active nephritis within 3 months of the clinic visit’ but the full biopsy report was not provided. **The UK JSLE Cohort Study largely recruits and prospectively collects clinical data from participants across the UK. At the time of initial study set up, patients seen between 1995-2006 were retrospectively recruited and limited retrospective clinical data collected