Efficacy and safety of IVF/ICSI in patients with severe endometriosis after long-term pituitary down-regulation

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This study investigated the effectiveness and safety of IVF/ICSI treatments in women with severe endometriosis following extended pituitary down-regulation.

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Abstract

Long-term pituitary down-regulation with a gonadotrophin-releasing hormone (GnRH) agonist for 3–6 months prior to IVF/intracytoplasmic sperm injection (ICSI) improves clinical pregnancy rates in endometriosis patients. However, some discussion about this treatment strategy still exists. This retrospective study from a tertiary-care university hospital examined the efficacy and safety of IVF/ICSI with and without long-term pituitary down-regulation in severe endometriosis patients (surgically confirmed American Society for Reproductive Medicine stages III and IV). All first IVF/ICSI treatment cycles between January 2009 and January 2012 were analysed. In patients treated with (n = 68) and without (n = 45) long-term pituitary down-regulation, 13 (19.1%) versus nine (20.0%) ongoing pregnancies after fresh embryo transfer (adjusted OR 0.58, 95% CI 0.18–1.86,) and 24 (35.3%) versus 10 (22.2%) ongoing pregnancies after fresh and cryopreserved embryo transfers (adjusted OR 1.62, 95% CI 0.60–4.38) were accomplished, respectively. Three complications (2.7%) and three recurrences (2.7%) were reported, only in patients treated with long-term pituitary down-regulation. The 1-year cumulative endometriosis recurrence rate was 7.3%. IVF/ICSI in patients with severe endometriosis is safe with low complication and recurrence rates. A favourable effect, albeit non-significant, of long-term pituitary down-regulation in achieving an ongoing pregnancy was observed only after including cryopreserved embryo transfers.

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Condition tags

endometriosis

MeSH descriptors

Down-Regulation Down-Regulation Endometriosis Fertilization in Vitro Gonadotropin-Releasing Hormone Leuprolide Pituitary Gland Sperm Injections, Intracytoplasmic Endometriosis Endometriosis Female Female Fertilization in Vitro Fertilization in Vitro Fertilization in Vitro Gonadotropin-Releasing Hormone Gonadotropin-Releasing Hormone Humans Humans Leuprolide

Citation neighborhood (2-hop)

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References (37)

Cited by (31)

Source provenance

europepmc
last seen: 2026-10-14T06:08:39.101224+00:00
openalex
last seen: 2026-06-10T17:14:06.276822+00:00
pubmed
last seen: 2026-10-08T21:12:56.342978+00:00
License: CC0 · commercial use OK