Finally, 26 cytokines [e.g., IFN-γ (log2 FC = 4.9), CXCL6 (log2 FC = 4), and IFN-λ (log2 FC = 3.3), among others] also showed a significant increase in preterm labor with intra-amniotic infection compared to preterm labor with sterile intra-amniotic inflammation. This evidence concerns the gene IFNG and chorioamnionitis.