ArticleFrontiers in endocrinology2022
"Short agonist stop" protocol, an ovarian stimulation for poor responders in
Article in Frontiers in endocrinology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers, 1 of them a synthesis that pooled it.
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Who cites it
6 citing papers in PubMed, 1 synthesis or guideline pooled it, 8 citations in OpenAlex.
- Efficacy of Double Trigger versus hCG Trigger Alone in GnRH-Antagonist Cycles: A Systematic Review and Meta-Analysis.Gynecologic and obstetric investigation · 2026Pooled it
- Clinical outcomes of the short agonist stop protocol versus the long GnRH agonist protocol in poor ovarian responders undergoing IVF/ICSI: a retrospective analysis.BMC pregnancy and childbirth · 2026Article
- Stop gonadotropin-releasing hormone-agonist protocol not superior to antagonist protocol on the outcomes of assisted reproductive techniques in poor responders: A randomized clinical trial.International journal of reproductive biomedicine · 2026Article
- Efficacy of Stop GnRH-Agonist/Antagonist versus GnRH-Antagonist Protocols inInternational journal of fertility & sterility · 2026Article
- Acupuncture for Premature Ovarian Insufficiency: A Randomized, Non-Inferiority Protocol with Exploratory Epigenetics Analysis.International journal of women's health · 2026Article
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Authors and funding
7 authors at 3 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Introduction: Poor responder patients remain a challenge in assisted reproductive technologies. The "short agonist stop" (SAS) stimulation protocol uses a double stimulation (flare up effect with the gonadotropin-releasing hormone (GnRH) agonist (GnRH-a) then gonadotropins) associated with a less strenuous blockage (discontinuation of GnRH-a) to favor follicular recruitment in order to obtain a better ovarian response. This study aims to compare the number of oocytes obtained after a SAS stimulation protocol with those obtained after the previous stimulation protocol, in the same women, with poor ovarian response (POR) diagnosed according to the POSEIDON criteria. Design: This therapeutic observational retrospective cohort from 2018 to 2022, with a case-control evaluation compared with the same patients' previous performance, included women with POR undergoing IVF with SAS stimulation protocol. The primary outcome was the number of total oocytes recovered and secondary outcomes were the numbers of mature oocytes, total embryos observed at day 2 and usable cleaved embryos and blastocysts (day 5/6). Results: 63 patients with SAS and previous cycles were included. In the SAS group, the mean number of oocytes was significantly higher: 7.3 vs 5.7, p=0.018 in comparison with the previous attempt. So was the number of mature oocytes (5.8 vs 4.1, p=0.032) and the total mean number of embryos obtained at day 2 (4.1 versus 2.7, p=0.016). The SAS stimulation generated 84 usable embryos: 57 cleaved embryos and 27 blastocysts. The mean number of usable embryos was similar in both groups (1.64 vs 1.31, respectively, p=0.178). In total, out of 63 patients, after the SAS protocol, and subsequent embryo transfers (fresh and frozen, n=54), 9 patients had ongoing pregnancies and no miscarriage occurred. The cumulative ongoing pregnancy rate (cOPR) after the SAS protocol was 14.3% (9/63) per oocyte pick-up and 16.7% (9/54) per transfer. Conclusion: SAS stimulation is a short and original protocol strengthening the therapeutic arsenal of poor responders, that may offer promising results for those patients with low prognosis and previous failed IVF. Results must be confirmed with a randomized controlled trial.
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