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Background <p>Congenital anomalies are a critical public health concern and warrant prioritization in research. However, the teratogenic potential of dydrogesterone (DYG) remains uncertain and a subject of ongoing debate.</p> Methods <p>This retrospective cohort study included patients undergoing embryo transfer between January 2010 and December 2018. It analyzed 124,815 embryo transfer cycles (80,103 [64.2%] fresh; 44,712 [35.8%] frozen), resulting in 52,175 live births. Newborns were stratified by maternal luteal phase support (DYG-exposed vs. unexposed). Patients with known congenital malformation risk factors were excluded. Congenital anomaly incidence was compared between groups. Stratified analysis and multivariate logistic regression models adjusting for confounders were employed.</p> Results <p>The total congenital anomaly rate was significantly lower in DYG-exposed newborns compared to unexposed groups (6.05‰ vs. 7.90‰, <i>P</i> = 0.020), with particularly notable differences in musculoskeletal malformations (0.63‰ vs. 1.33‰, <i>P</i> = 0.025). No significant differences were observed in other congenital anomaly categories. After stratifying by fresh or frozen cycles, DYG-exposed and unexposed groups showed no significant differences in birth defects during fresh cycles. In frozen cycles, musculoskeletal anomalies were significantly lower in the DYG group both before (0.60‰ vs. 2.37‰, <i>P</i> = 0.020) and after adjustment (<i>P</i> = 0.009, OR: 0.19, 95% CI: 0.05–0.66). Other anomaly categories remained unaffected. However, this specific association did not remain significant after rigorous correction for multiple testing with the application of both the Bonferroni and False Discovery Rate (FDR) methods. Multivariate analysis adjusted for confounders revealed no increased risk of congenital anomalies associated with DYG exposure.</p> Conclusions <p>First-trimester dydrogesterone therapy was not associated with an increased risk of congenital anomalies. Due to the limitations of this cohort study, further follow-up and in-depth data analysis are planned for future studies.</p>

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Congenital anomalies after first-trimester dydrogesterone therapy during in vitro fertilization

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年12月5日

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  • Wan Yang,
  • Lin Zeng,
  • Lixue Chen,
  • Rui Yang,
  • Haiyan Wang,
  • Ping Liu,
  • Ying Lian,
  • Rong Li,
  • Hongbin Chi,
  • Jie Qiao

摘要

Background

Congenital anomalies are a critical public health concern and warrant prioritization in research. However, the teratogenic potential of dydrogesterone (DYG) remains uncertain and a subject of ongoing debate.

Methods

This retrospective cohort study included patients undergoing embryo transfer between January 2010 and December 2018. It analyzed 124,815 embryo transfer cycles (80,103 [64.2%] fresh; 44,712 [35.8%] frozen), resulting in 52,175 live births. Newborns were stratified by maternal luteal phase support (DYG-exposed vs. unexposed). Patients with known congenital malformation risk factors were excluded. Congenital anomaly incidence was compared between groups. Stratified analysis and multivariate logistic regression models adjusting for confounders were employed.

Results

The total congenital anomaly rate was significantly lower in DYG-exposed newborns compared to unexposed groups (6.05‰ vs. 7.90‰, P = 0.020), with particularly notable differences in musculoskeletal malformations (0.63‰ vs. 1.33‰, P = 0.025). No significant differences were observed in other congenital anomaly categories. After stratifying by fresh or frozen cycles, DYG-exposed and unexposed groups showed no significant differences in birth defects during fresh cycles. In frozen cycles, musculoskeletal anomalies were significantly lower in the DYG group both before (0.60‰ vs. 2.37‰, P = 0.020) and after adjustment (P = 0.009, OR: 0.19, 95% CI: 0.05–0.66). Other anomaly categories remained unaffected. However, this specific association did not remain significant after rigorous correction for multiple testing with the application of both the Bonferroni and False Discovery Rate (FDR) methods. Multivariate analysis adjusted for confounders revealed no increased risk of congenital anomalies associated with DYG exposure.

Conclusions

First-trimester dydrogesterone therapy was not associated with an increased risk of congenital anomalies. Due to the limitations of this cohort study, further follow-up and in-depth data analysis are planned for future studies.