Pregnancy outcomes after controlled ovarian hyperstimulation in women with endometriosis-associated infertility: GnRH-agonist versus GnRH-antagonist
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This study compared pregnancy outcomes following controlled ovarian hyperstimulation using GnRH-agonist versus GnRH-antagonist protocols in women with endometriosis-associated infertility.
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Abstract
BACKGROUND OR OBJECTIVE: Endometriosis is common in women referred for infertility. In vitro fertilization provides good results but the choice of the best-controlled ovarian hyperstimulation protocol remains a subject of debate. The objective of this retrospective study was to compare pregnancy outcomes in women with endometriosis-associated infertility after COH with a long agonist protocol or a six-week oral contraception-antagonist protocol.
MATERIAL AND METHODS: Retrospective analysis of a prospective database identified 284 COH cycles - 165 with GnRH-agonist protocol (GnRH-agonist group) and 119 with GnRH-antagonist protocol (GnRH-antagonist group) - in 218 women, with endometriosis from January 2013 to October 2015.
RESULTS: No difference in the epidemiological characteristics was found between the groups. Per started cycle, pregnancy and live-birth rates after fresh embryo transfer were higher with the GnRH-agonist protocol (25% vs. 13%, P=0.02 and 18% vs. 8%, P=0.04, respectively). Considering analysis per cycle with embryo transfer, the pregnancy rate was similar in both groups while the live-birth rate was higher in the GnRH-agonist group (29% vs. 17%, P=0.053 and 22% vs. 10%, P=0.02, respectively). No difference was observed between the groups with freeze-thaw embryo transfer. Subgroup analysis (endometrioma alone, deep infiltrating endometriosis with and without endometrioma, endometriosis with and without adenomyosis) revealed no difference between the groups for either pregnancy or live-birth rates.
CONCLUSION: A GnRH-agonist protocol appears to result in higher pregnancy and live-birth rates after fresh embryo transfer in women with endometriosis-associated infertility, suggesting that a GnRH-antagonist protocol might negatively impact endometrial receptivity.
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- Outcome comparisons of controlled ovarian hyperstimulation protocols in adenomyosis patients: a real-world retrospective cohort study 2026
- Fertilizing role of leuprolide acetate in assisted human reproduction among infertile patients with endometriosis 2026
- Endometriosis and IVF: Clinical, Surgical, and Biological Factors Affecting Outcomes 2025
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- THE RELATIONSHIP BETWEEN DEEP ENDOMETRIOSIS AND THE RESULTS OF IN VITRO FERTILIZATION TREATMENTS 2025
- Endometriosis and subfertility 2024
- Evidence based management of patients with endometriosis undergoing assisted conception: British fertility society policy and practice recommendations 2024
- Effects of various controlled ovarian hyperstimulation protocols and surgery on pregnancy outcomes in women with endometriosis 2024
- Hormonal Therapies before in vitro fertilization in women with endometriosis: The Minotaur's Labyrinth and the Ariadne's Thread 2024
- The Asian Society of Endometriosis and Adenomyosis guidelines for managing adenomyosis 2023
- Long GnRH Agonist versus GnRH Antagonist Protocols in Women with Endometrioma and Good Ovarian Reserve Undergoing IVF/ICSI Cycles 2023
- Comparing ART outcomes in women with endometriosis after GnRH agonist versus GnRH antagonist ovarian stimulation: a systematic review 2023
- Controlled ovarian stimulation for endometriosis patients with ultra-long GnRH-agonist or GnRH-antagonist protocols: A retrospective study by propensity score matching 2023
- IVF stimulation protocols and outcomes in women with endometriosis 2023
- Is the long-acting gonadotropin-releasing hormone agonist long protocol better for patients with endometriosis undergoing IVF? 2023
- Comparative effectiveness of infertility treatment using assisted reproductive technologies in patients with various forms of endometriosis and its combination with polycystic ovary syndrome 2022
- Gynecological uses of GnRH antagonists: review article 2022
- Integrated bioinformatic analysis of dysregulated microRNA-mRNA co-expression network in ovarian endometriosis 2022
- Reproductive outcomes of IVF after comprehensive endometriosis treatment: a prospective cohort study 2022
- Could laparoscopic cystectomy improve intrauterine insemination with controlled ovarian hyperstimulation outcomes in women with endometrioma? 2022
- Effects of different ovarian stimulation protocols on in vitro fertilization/intracytoplasmic sperm injection (IVF/ICSI) outcomes in patients with adenomyosis: a retrospective cohort study 2022
- Impact of endometriosis on female fertility and the management options for endometriosis-related infertility in reproductive age women: a scoping review with recent evidences 2021
- Ovulation induction in infertile women with endometriotic ovarian cysts: current evidence and potential pitfalls 2020
- Endometriosis Lowers the Cumulative Live Birth Rates in IVF by Decreasing the Number of Embryos but Not Their Quality 2020
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