Reduced secretion of IL-18 and IL-27 by mDCs in PTB patients was associated with 105A/C polymorphisms of the IL18 gene, and 2905T/G, 4730T/С, and -964A/G of the IL27 gene, respectively.
In terms of serum IL-27 levels, the -964 A/A genotype may be associated with a protective role that prevents the intrapulmonary spread of PTB rather than its development.
Finally, clinical analysis showed that IL-27 was detected in the bronchoalveolar lavage of patients with asthma, chronic obstructive pulmonary disease (COPD), and pulmonary tuberculosis (PTB), and increased IL-27 concentrations were correlated with increased CXCL10 concentrations in patients with COPD and PTB.