Chen et al. analyzed the lnc-DC level in the plasma of 127 pSS patients without ITP (immune thrombocytopenia), 22 pSS patients with ITP, 50 patients with SLE, 50 patients with RA, and 109 healthy individuals and reported that the lnc-DC level was significantly elevated in pSS patients, especially in pSS patients with ITP. This evidence concerns the gene DCX and rheumatoid arthritis.