TLR3 and idiopathic pulmonary fibrosis: TLR-3 mRNA expression was significantly higher in patients with fibrotic disorders (CTD-IPs and IPF) when compared to those with granulomatous disorders (sarcoidosis) (mean ± SD, 1.104 ± 1,087 versus 0.038 ± 0.037; P = 0.04).