NFKB1 and synovial sarcoma: Furthermore, findings in the present study on the great risk of pSS in individuals exposed to high concentrations of air pollutants, were in line with studies implying the impact of environmental pollutants on dry eye disease in patients with SS and in SS models (53), for which increased levels of TNF-α and NF-κB in the cornea were observed (53, 54).