Volume 68, Issue 2 pp. 154-163
Original Article

The Association Between Endometriosis and Polymorphisms in the Interleukin-1 Family Genes in Korean Women

Sungwook Chun

Sungwook Chun

Department of Obstetrics and Gynecology, College of Medicine, Inje University, Haeundae Paik Hospital, Busan, Korea

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Hoon Kim

Hoon Kim

Department of Obstetrics and Gynecology, Incheon Medical Center, Incheon, Korea

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Seung-Yup Ku

Seung-Yup Ku

Department of Obstetrics and Gynecology, College of Medicine, Seoul National University, Seoul, Korea

Clinical Research Institute, Seoul National University, Seoul, Korea

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Chang Suk Suh

Chang Suk Suh

Department of Obstetrics and Gynecology, College of Medicine, Seoul National University, Seoul, Korea

Clinical Research Institute, Seoul National University, Seoul, Korea

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Seok Hyun Kim

Seok Hyun Kim

Department of Obstetrics and Gynecology, College of Medicine, Seoul National University, Seoul, Korea

Clinical Research Institute, Seoul National University, Seoul, Korea

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Jung Gu Kim

Corresponding Author

Jung Gu Kim

Department of Obstetrics and Gynecology, College of Medicine, Seoul National University, Seoul, Korea

Clinical Research Institute, Seoul National University, Seoul, Korea

Correspondence

Jung Gu Kim, Department of Obstetrics and Gynecology, Seoul National University Hospital, 28 Yeungun-dong, Chongno-Ku, Seoul 110-744, Korea.

E-mail: [email protected]

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First published: 17 April 2012
Citations: 20

Abstract

Problem

To investigate the association between polymorphisms of the interleukin-1 (IL-1) family genes and endometriosis in Korean women.

Method of study

In this case–control study, the IL-1α −889C>T, IL-1 receptor antagonist (IL-1RA) 86-bp microsatellite, IL-1 receptor 1 (IL-1R1) 52C>A, 294C>T, 1498T>C, 1632A>G, IL-1R2 rs2072472 C>T and rs7561460 C>T polymorphisms were analyzed in women with (n = 138) and without (n = 214) endometriosis using restriction fragment length polymorphism (RFLP) analysis, TaqMan assay, or DNA sequencing. Serum IL-1α, soluble IL-1RA (sIL-1RA), and sIL-1R2 levels were measured by enzyme-linked immunosorbent assay (ELISA).

Results

Among the polymorphisms measured, the 1498T>C polymorphisms in the IL-1R1 gene were found to be related with early-stage endometriosis but not with advanced-stage endometriosis. The genotypes with at least one T allele (CT + TT) were less frequently observed in early-stage endometriosis compared with normal controls (OR = 0.44, 95% CI = 0.22–0.87, P = 0.02). Serum sIL-1R2 levels were significantly lower (< 0.01) in women with endometriosis than in normal controls, whereas no difference in serum sIL-1RA levels between these two groups was noted. The single and haplotype genotypes of the IL-1R2 and IL-1RA microsatellite polymorphisms were not related with these serum levels.

Conclusion

The IL-1R1 1498T>C polymorphism is associated with early-stage endometriosis in Korean women.

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