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Gonadorelin

GnRH, Luteinizing Hormone-Releasing Hormone, LHRH, Factrel

Quick Stats
Studies 192
Trials 100
2025 pubmed

Fertility preservation practices and gastrointestinal oncologist in Europe: a pan-European study.

Ben-Aharon. Irit I; Goshen-Lago. Tal T; Puccini. Alberto A; Alsina. Maria M; Arnold. Dirk D; van Laarhoven. Hanneke H; Elme. Anneli A; Buffart. Tineke T; Fokter-Dovnik. Nina N; Sokop. Tomas T; Obermanova. Radka R; Lordick. Florian F; Papamichael. Demetris D; Sclafani. Francesco F; Elez. Elena E; Taieb. Julien J

Key Findings

  • Only 57% of oncologists routinely discuss fertility impact with patients under 40, and 36% only in curative cases.
  • 34% recommend GnRH analogues (like gonadorelin) for colorectal cancer patients, while many do not.
  • There is significant variability across countries in referral rates for sperm preservation, egg/embryo freezing, and ovarian transposition.

Practical Outcomes

  • For biohackers or self‑directed health optimizers, the study offers little direct, actionable guidance on using gonadorelin for longevity or performance. It mainly highlights that clinical use of GnRH analogues for fertility preservation in GI cancer patients is inconsistent and not a standard protocol.

Summary

This study surveyed European gastrointestinal cancer doctors about how they talk to young patients about fertility and which preservation methods they use. It found wide differences in practice, with many doctors not consistently offering options like sperm banking, egg freezing, or hormone treatments.

Abstract

The rising incidence of early-onset gastrointestinal (GI) cancer has made the impact of treatments on fertility of high significance. While there is abundant evidence on oncofertility outcomes in breast cancer and hematological malignancies, data regarding these perspectives in GI cancers is lacking. We sought to evaluate current practices of fertility preservation (FP) among GI oncologists across Europe. A cross-sectional survey was distributed through the Gastrointestinal Tract Cancer Group (GITCG) of the EORTC network and affiliated cooperative groups and cancer centers using a 10-item electronic survey regarding oncofertility practices. The target population was oncologists who routinely treat GI cancers. A statistical analysis was performed based on country, patient volume, and tumor type. Two hundred and twenty-six GI oncologists from 27 countries completed the survey, the majority from high volume cancer centers. Fifty seven percent of the participating oncologists routinely discuss the impact of treatment on fertility in any patient <40 years, while 36% discuss this only in the curative setting. Fifty-nine percent refer female patients to standard FP options (embryo/oocyte preservation), while 24% chose to refer to ovarian cryopreservation. Of note, 17% indicated they would not refer a curative patient for FP at all due to time or resource issues. Sixty five percent routinely refer male patients to sperm preservation. Use of Gonadotropin Releasing Hormone analogues (GnRHa) in CRC patients is recommended by 34% of oncologists. In the setting of pelvic radiation, 65% refer a female patient for ovarian transposition before pelvic irradiation; 32% would consider uterine transposition. Sixty one percent would consider a nonradiation protocol as perioperative chemotherapy as a valid option for young female patients. We observed heterogeneity upon country but not upon physician gender. Our study indicates a substantial diversity in current practices in Europe with regard to FP in young cancer patients with GI malignancies, which is not always aligned with current guidelines. There is a need to disseminate and educate GI oncologists on oncofertility perspectives and contemporary data. Additionally, there is a need to establish evidence on the utility of fertility preservation options for patients with GI cancers.

Study Information

Provider

pubmed

Year

2025

Date

2025-11-11T00:00:00.000Z

DOI

10.1093/oncolo/oyaf350