• Nicole M Jones, Claudia Holzman, Yan Tian, Steven S Witkin, Mehmet Genc, Karen Friderici, Rachel Fisher, Devrim Sezen, Oksana Babula, Katherine A Jernigan, Hwan Chung, and Julia Wirth.
• Department of Epidemiology, Michigan State University, East Lansing, MI 48824, USA. njones@epi.msu.edu
• J. Matern. Fetal. Neonatal. Med. 2012 Mar 1; 25 (3): 240-7.

ObjectiveThere is little information about the combination of genetic variability in pregnant women and their children in relation to the risk of preterm delivery (PTD). In a sub-cohort of 487 non-Hispanic white and 288 African-American mother/child pairs, the Pregnancy Outcomes and Community Health Study assessed 10 functional polymorphisms in 9 genes involved in innate immune function.MethodsRace-stratified weighted logistic regression models were used to calculate odds ratios for genotype and PTD/PTD subtypes. Polymorphisms significantly associated with PTD/PTD subtypes were tested for mother/child genotype interactions.ResultsThree maternal polymorphisms (IL-1 receptor antagonist intron two repeat (IL-1RN), matrix metalloproteinase- -C1562T, and TNF receptor two M196R (TNFR2)) and three child polymorphisms (IL1-RN, tumor necrosis factor-alpha -G308A, and TNFR2) were associated with PTD, but associations varied by PTD subtype and race. Two interactions were detected for maternal and child genotype. Among non-Hispanic white women, the odds of PTD was higher when both mother and child carried the IL-1RN allele two (additive interaction p < 0.05). Among African-American women, the odds of PTD were higher when both mother and child carried the TNFR2 R allele (multiplicative interaction p < 0.05).ConclusionThese results highlight the importance of assessing both maternal and child genotype in relation to PTD risk.

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