FET in Adenomyosis

Summary

Purpose of the Study: To compare the effectiveness of GnRH agonist downregulation alone versus GnRH agonist combined with letrozole in improving pregnancy outcomes in women with adenomyosis undergoing frozen embryo transfer (FET). Research Question: Is the combined use of GnRH agonist and letrozole more effective than GnRH agonist downregulation alone in achieving better ongoing pregnancy rates in adenomyosis cases undergoing FET? Hypothesis: Null Hypothesis (H₀): The combined use of GnRH agonist and letrozole is not more effective than GnRH agonist downregulation alone in achieving a higher ongoing pregnancy rate in adenomyosis cases undergoing FET. Study Outcomes: Primary Outcome: Ongoing pregnancy rate at 12 weeks of gestation.

Timeline

Start

2026-06-25

Primary completion

2026-07-15

Completion

2026-12-23

Publications

• Results Salim R, Riris S, Saab W, Abramov B, Khadum I, Serhal P. Adenomyosis reduces pregnancy rates in infertile women undergoing IVF. Reprod Biomed Online. 2012 Sep;25(3):273-7. doi: 10.1016/j.rbmo.2012.05.003. Epub 2012 May 23.
• Results Younes G, Tulandi T. Effects of adenomyosis on in vitro fertilization treatment outcomes: a meta-analysis. Fertil Steril. 2017 Sep;108(3):483-490.e3. doi: 10.1016/j.fertnstert.2017.06.025.
• Results Han B, Liang T, Zhang W, Ma C, Qiao J. The effect of adenomyosis types on clinical outcomes of IVF embryo transfer after ultra-long GnRH agonist protocol. Reprod Biomed Online. 2023 Feb;46(2):346-351. doi: 10.1016/j.rbmo.2022.09.021. Epub 2022 Sep 26.
• Results Sharma S, RoyChoudhury S, Bhattacharya MP, Hazra S, Majhi AK, Oswal KC, Chattopadhyay R. Low-dose letrozole - an effective option for women with symptomatic adenomyosis awaiting IVF: a pilot randomized controlled trial. Reprod Biomed Online. 2023 Jul;47(1):84-93. doi: 10.1016/j.rbmo.2023.03.010. Epub 2023 Mar 18.
• Results Li Y, Ge L, Yang X, Cui L, Chen ZJ. Effects of duration of long-acting GnRH agonist downregulation on assisted reproductive technology outcomes in patients with adenomyosis: a retrospective cohort study. Front Med (Lausanne). 2023 Sep 26;10:1248274. doi: 10.3389/fmed.2023.1248274. eCollection 2023.

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