In addition, by studying minor SG of female patients with primary SS we found that TLR7, CXCL13 and CXCR5 mRNA expression levels were significantly higher in diseased versus sicca controls, and that TLR7 expression was positively correlated to TNF, LT-α, CXCL13 and CXCR5 expression levels. Here, CXCL13 is linked to synovial sarcoma.