Journal
AMERICAN JOURNAL OF REPRODUCTIVE IMMUNOLOGY
Volume 71, Issue 5, Pages 472-484Publisher
WILEY
DOI: 10.1111/aji.12241
Keywords
African Americans; genetic association studies; preeclampsia; pregnancy; small for gestational age
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Funding
- NICHD [R21 HD060207]
- NIEHS [2-T32-ES07018, P30ES010126]
- Mount Sinai Center for Children's Environmental Health
- NIH [HD28684, HD28684A, HD37584, HD39373, RR00046]
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ProblemInflammatory biomarkers are associated with preeclampsia (PE) and poor fetal growth; however, genetic epidemiologic studies have been limited by reduced gene coverage and the exclusion of African American mothers. Method of studyCases and controls (N=1646) from a pregnancy cohort were genotyped for 503 tagSNPs in 40 genes related to inflammation. Gene-set analyses were stratified by race and were followed by a single SNP analysis within significant gene sets. ResultsGene-level associations were found for IL6 and KLRD1 for term small for gestational age (SGA) among African Americans. LTA/TNF and TBX21 were associated with PE among European Americans. The strongest association was for PE among European Americans for an upstream regulator of TNF with RR=1.8 (95% CI 1.1-2.7). ConclusionAlthough previous studies have suggested null associations, increased tagging and stratification by genetic ancestry suggests important associations between IL6 and term SGA for African Americans, and a TNF regulator and PE among European Americans (N=149).
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