In such a context, we herein considered of interest to investigate for the first time whether changes in TCs/CD34+ stromal cells may occur in the synovium of individuals affected by rheumatoid arthritis (RA), a disorder in which chronic synovitis leads to the formation of the so‐called synovial pannus that invades articular cartilage and bone with progressive joint destruction.1, 13. This evidence concerns the gene CD34 and rheumatoid arthritis.