CD4 and juvenile idiopathic arthritis: RNAseq data from sorted Tregs (CD4+CD25hiCD127lo) and conventional T cells (Tconvs) (CD4+CD25loCD127+) were generated from SFMC of JIA patients (n = 8) and PBMC from healthy controls (n = 3) and analysed to validate the literature-based Treg gene list across tissue and disease state.