The Journal of Practical Medicine ›› 2026, Vol. 42 ›› Issue (8): 1415-1420.doi: 10.3969/j.issn.1006-5725.2026.08.015

• Treatise: Clinical Practice • Previous Articles     Next Articles

Association between genetic variants in the promoter of PDE4D gene and the risk of intrauterine adhesions in patients after curettage abortion

Danting SHEN1,Cong LI1,Manlin SHI1,Shuhua LIU1,Anping LIN1,Bin LIU2()   

  1. 1.Department of Gynecology,Shenzhen Baoan Women's and Children's Hospital,Shenzhen 510181,Guangdong,Chin
    2Maternal & Child Health Research Institute,Shenzhen Baoan Women's and Children's Hospital,Shenzhen 510181,Guangdong,China
  • Received:2025-12-25 Online:2026-04-25 Published:2026-04-28
  • Contact: Bin LIU E-mail:gz12liubin@163.com

Abstract:

Objective To investigate the association between genetic variants in the promoter region of the PDE4D gene and the risk of intrauterine adhesions in patients following curettage abortion. Methods This study conducted genotyping of two polymorphisms, rs7701573 and rs997421, in 113 patients diagnosed with intrauterine adhesions and 270 control subjects from the hospital who underwent curettage abortions between 2022 and 2023. Subsequently, we employed multiple logistic regression models to analyze their association with the risks of intrauterine adhesions. Results Individuals with rs997421 CT+TT genotypes had a lower risk of intrauterine adhesions (adjusted OR = 0.635, 95%CI: 0.408 - 0.988) compared to those with the rs997421 CC genotype. The protective effect was more pronounced in patients with more extensive cavity involvement of adhesions (adjusted OR = 0.518, 95%CI: 0.268 - 0.999) and in those with fibrous (Firm & Dense) adhesions (adjusted OR = 0.596, 95%CI: 0.371 - 0.956). However, the rs7701573 polymorphism did not significantly affect the risk of intrauterine adhesions. To our knowledge, this study is the first to report the association between PDE4D gene polymorphisms and the risk of intrauterine adhesions after curettage abortion. Conclusions This study first indicates that the rs997421 polymorphism with the CT+TT genotype is associated with a reduced, protective risk of intrauterine adhesions, especially in patients with fibrous adhesions and extensive uterine cavity involvement. This provides new perspectives for preventing intrauterine adhesions after curettage abortion.

Key words: curettage abortion, intrauterine adhesion, PDE4D, polymorphisms

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