IL1B and chorioamnionitis: In women diagnosed with chorioamnionitis and premature labour, in comparison to those who delivered at term, higher levels of interleukin 1 beta (IL-1β), calcium binding protein A5 (S100A5), prolyl 4-hydroxylase alpha polypeptide 2 (P4HA2), interleukin 6 (IL-6), interleukin 8 (IL-8), lipopolysaccharides (LPS), tumor necrosis factor alpha (TNF-α), and C-reactive protein (CRP) were found in maternal serum, cervicovaginal discharge, and amniotic fluid [9–12].