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Updated: Jan 20, 2026
Fertility Preservation in Patients with Severe Ovarian Dysfunction
Published on: March 25, 2021
Fertility Preservation Using GnRH Agonists: Rationale, Possible Mechanisms, and Explanation of Controversy.
1Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel.
Gonadotropin-releasing hormone agonists (GnRHa) can help preserve fertility in young women undergoing cancer treatment. Recent studies show GnRHa is safe and effective for fertility preservation, even in hormone-sensitive cancers.
Area of Science:
- Oncology
- Reproductive Endocrinology
- Pharmacology
Background:
- Fertility preservation is crucial for young women undergoing gonadotoxic cancer therapies.
- Current accepted methods include embryo or oocyte cryopreservation.
- Ovarian tissue cryopreservation, in vitro maturation, and GnRH agonists (GnRHa) are investigational.
Purpose of the Study:
- To review the efficacy and safety of GnRHa for fertility preservation in women undergoing cancer treatment.
- To explore theoretical mechanisms of GnRHa action in protecting ovarian function.
- To reconcile conflicting data regarding GnRHa's impact on disease-free survival in hormone-receptor-positive breast cancer patients.
Main Methods:
- Literature review of existing studies and randomized controlled trials (RCTs) on GnRHa for fertility preservation.
- Analysis of theoretical mechanisms proposed for GnRHa's ovarian protective effects.
- Synthesis of evidence regarding GnRHa's impact on disease-free survival in hormone-receptor-positive breast cancer.
Main Results:
- Recent RCTs indicate GnRHa co-treatment does not negatively impact, and may improve, disease-free survival in hormone-receptor-positive breast cancer patients.
- Five theoretical mechanisms for GnRHa's fertility-sparing effects are proposed, including hormonal milieu simulation and direct ovarian protection.
- A discrepancy exists between studies supporting and refuting GnRHa's efficacy in fertility preservation.
Conclusions:
- GnRHa is a promising option for fertility preservation in women undergoing gonadotoxic therapies.
- Further research is needed to fully elucidate GnRHa's mechanisms and optimize its use.
- GnRHa co-treatment appears safe for fertility preservation in patients with hormone-sensitive cancers.
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