CRP and interstitial lung disease: ILD, which is one of many pulmonary manifestations associated with pSS is more common in smokers, older age, those with hypergammaglobulinemia, elevated rheumatoid factor (RF) or antinuclear antibody titres, positive anti-SSA or -SSB antibodies, increased C-reactive protein (CRP), and reduced serum C3 levels [83,84,85].