Dr Pepper is a consultant nephrologist at the Royal Free Hospital and University College London (UCL) Hospitals.

She has a PhD in glomerulonephritis (UCL) and completed her training in nephrology as a clinical lecturer.

Dr Pepper has an interest in autoimmune kidney disease and has expertise in lupus, vasculitis and nephrotic syndrome and is PI on a number of clinical trials as well as being widely published in this area.



GMC number


• Ruth J Pepper , Richard S Trompeter. The causes and consequences of paediatric kidney disease on adult nephrology care. Pediatr Nephrol 2021 Aug 13.

• Pepper RJ, McAdoo SP, Moran SM, Kelly D, Scott J, Hamour S, Burns A, Griffith M, Galliford J, Levy JB, Cairns TD, Gopaluni S, Jones RB, Jayne D, Little MA, Pusey CD2,3, Salama AD1. A novel glucocorticoid-free maintenance regimen for anti-neutrophil cytoplasm antibody-associated vasculitis. Rheumatology (Oxford). 2019 Feb 1;58(2):260-268

• RJ Pepper, JB Draibe, B Caplin,FC Fervenza, GS Hoffman, CGM Kallenberg, CA Langford, PA Monach, P Seo, R Spiera, EW St Clair, NK Tchao, J Stone, U Specks, PA Merkel, AD Salama; for RAVE-ITN Research Group. The association of serum calprotectin (S100A8/S100A9) levels with disease relapses in PR3-ANCA-associated vasculitis. Arthritis and Rheumatology 2017; 69(1):185-193

• Pepper RJ, Wang HH, Rajakaruna GK, Papakrivopoulou E, Vogl T, Pusey CD, Cook HT, Salama AD.S100A8/A9 (Calprotectin) Is Critical for Development of Glomerulonephritis and Promotes Inflammatory Leukocyte-Renal Cell Interactions. Am J Pathol. 2015 May;185(5):1264-74

Research interests include autoimmune kidney disease and glomerulonephritis.