HSPA1B and idiopathic pulmonary fibrosis: In the recessive model analysis we found that the AA genotype of HSPA1B (rs1061581) seems equally protective (OR = 0.68, 95 % CI = 0.07–0.03; p = <0.001), whereas the TT genotype confers a risk for IPF development (OR = 2.70, 95 % CI = 1.46–4.98; p = 0.001).