I am a Professor of Paediatric Rheumatology at the UCL GOS Institute of Child Health, and also work as a Consultant at Great Ormond Street Hospital NHS Trust where I see patients with a range of autoimmune and rheumatic dieases, with a focus on arthritis and myositis. All of the research work I lead is informed by patients and the key questions we still need to answer concerning the causes, treatments and outcomes of these diseases. My medical training was followed by award of a Clinical Research Fellowship to work on the biology of human T cell receptor (TCR)/MHC-peptide interactions, leading to my PhD. Funded by an EMBO Fellowship, I undertook postdoctoral work at Stanford USA, generating human MHC-class-ll tetramers to define biochemistry of human CD4+ T cell/MHC interactions. Returning to UCL on a Wellcome Trust Clinician Scientist Fellowship, I established my group working on immunological mechanisms underlying childhood arthritis and myositis with focus on T cells. I became a full Professor at UCL in 2010. I am Director of the Centre for Adolescent Rheumatology Versus Arthritis, Deputy Director of the NIHR funded GOSH Biomedical Research Centre and Chief investigator of the MRC-funded stratified medicine in JIA, CLUSTER.

Research Programme

• My research group has a major focus upon human immune cell responses and immune regulation, in the context of two autoimmune conditions of childhood, Juvenile Idiopathic Arthritis (JIA) and Juvenile Dermatomyositis (JDM). 
• We are interested in mechanisms which allow survival and expansion of inflammatory cells in tissues compared to defects in immune regulation and how these influence disease course and phenotype. We demonstrated a pivotal role for the Th17 population in JIA, and that under inflammatory conditions, Th17 cells that demonstrate plasticity are identified by the specific molecule CD161 whose biology we are now exploring
• Our group hosts the UK JDM Cohort and Biomarker Study, generating critical evidence for clinico-pathological endo-phenotypes, myositis autoantibody associations with genotype, and a validated tool for assessment of muscle biopsy pathology, now in clinical use
• We have a growing interest in interactions between metabolism and ongoing immune response in these disease
• As Director of the Centre for Adolescent Rheumatology Versus Arthritis since 2012, I have established and led a large team of multi-disciplinary researchers in this emerging field dissecting how puberty impacts on the immune system and disease. We have provided seminal evidence that adolescent arthritis requires age-specific science and care