TGFB1 and chorioamnionitis: In preterm women without histologic chorioamnionitis frequencies for the IL10-1082A/-819T/-592A (ATA) haplotype [17], MBL2 codon 54Asp (the MBL 'B' allele) [21], TNFRSF6-1377A/-670G (AG) haplotype [22] and TGFB1-800G/-509T (GT) homozygosity [17] were similar to reported Caucasian controls.