title: A tumor necrosis factor-alpha promoter polymorphism and pregnancy complications: results of a prospective cohort study in 1652 pregnant women.
abstract: The purpose of this article is to investigate the frequency of the tumor necrosis factor-alpha (TNF-alpha) -308 G/A single nucleotide polymorphism in women with intrauterine fetal death, preeclampsia, preterm delivery, and small-for-gestational-age (SGA) infants. In a prospective cohort study, DNA from 1652 consecutive pregnant women was analyzed for TNF-alpha -308 G/A by polymerase chain reaction. Women who developed at least 1 of the predefined pregnancy complications were used as cases and compared to women without pregnancy complications. Of 1652 women, 268 (16.2%) developed at least 1 pregnancy complication. TNF-alpha -308 G/A allele frequencies (G: 463/536 [86%] and A: 73/536 [14%] vs G: 2366/2768 [85%] and A: 402/2768 [15%], respectively; P = .6; odds ratio [OR], 0.93; 95% confidence interval [CI], 0.69-1.25) and genotype distributions (G/G+G/A: 259/268 [97%] and A/A 9/268 [3%] vs G/G+G/A: 1352/1384 [98%] and A/A 32/1384 [2%], respectively; P = .4; OR, 0.20; 95% CI, 0.002-14.81) were not significantly different between cases and controls. The authors observed no statistically significant difference in TNF-a -308 G/A genotype distributions comparing controls and women with intrauterine fetal death, preeclampsia, preterm delivery <34 weeks' gestation, preterm delivery >34 weeks' gestation, SGA infants <3rd percentile, and SGA infants of the 4th to 10th percentile. TNF-alpha -308 G/A is not a genetic marker for identifying women at increased risk of common pregnancy complications.
authors.affiliation: Department of Obstetrics and Gynecology, Ludwig Boltzmann Institute of Clinical Obstetrics and Gynecology, Danube Hospital/SMZ-Ost, Vienna, Austria.
authors.forename: Felix
authors.initials: F
authors.lastname: Stonek
authors.forename: Eva-Katrin
authors.initials: EK
authors.lastname: Bentz
authors.forename: Erich
authors.initials: E
authors.lastname: Hafner
authors.forename: Martin
authors.initials: M
authors.lastname: Metzenbauer
authors.forename: Karl
authors.initials: K
authors.lastname: Philipp
authors.forename: Lukas A
authors.initials: LA
authors.lastname: Hefler
authors.forename: Clemens B
authors.initials: CB
authors.lastname: Tempfer
mesh_terms: D000328:Adult; D015331:Cohort Studies; D005260:Female; D005787:Gene Frequency / Q000235:genetics; D005819:Genetic Markers / Q000235:genetics; D006801:Humans; D020641:Polymorphism, Single Nucleotide / Q000235:genetics*; D011247:Pregnancy; D011248:Pregnancy Complications / Q000175:diagnosis / Q000453:epidemiology / Q000235:genetics*; D011401:Promoter Regions, Genetic / Q000235:genetics*; D011446:Prospective Studies; D014409:Tumor Necrosis Factor-alpha / Q000235:genetics*
chemical_list: D005819:Genetic Markers; D014409:Tumor Necrosis Factor-alpha