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Am J Obstet Gynecol. 2003 Oct;189(4):915-8.

Interleukin-6 promoter -174 polymorphism and spontaneous preterm birth.

Author information

1
University of Pittsburgh School of Medicine, Department of Obstetrics, Magee-Womens Research Institute, Pittsburgh, Pa., USA. hsimhan@mail.magee.edu

Abstract

OBJECTIVE:

We assessed the relationship between interleukin-6 (IL-6) promoter -174 polymorphism and spontaneous preterm birth (sPTB) less than 34 weeks and the relationship of polymorphism status with race.

STUDY DESIGN:

Polymerase chain reaction was used to evaluate DNA from 156 controls who delivered after spontaneous labor at term and 51 subjects who had sPTB less than 34 weeks.

RESULTS:

Among the 156 controls, the C/C variant was present in 30 (19.2%). Among the 51 subjects, the C/C variant was present in 2 (6.3%) (odds ratio 0.17, 95% CI 0.04-0.74). Among white women, the C/C variant was present in 30 (27.2%) controls but only 2 (5.2%) cases. No African American women carried the C/C variant. The racial disparity was statistically significant. (P<.001)

CONCLUSION:

The IL-6 promoter -174 allelic variant C/C is significantly less frequent among women with sPTB less than 34 weeks. There is a dramatic racial disparity in the distribution of allelic variants of this polymorphism.

PMID:
14586325
[Indexed for MEDLINE]
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