Abst 1515 Williams & colleagues studied role of CD4+ and CD8+ PD-1+ T cells in patients with early RA - CD4+ and CD8+ T PD-1+ T cells were dominant cell types in synovial tissue - 6 months after treatment, gene expression of CD4+ PD-1+ T cells decreased #ACR21 @RheumNow https://t.co/TWLym8oHuK