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Gnr4.0

Gonadorelin Research

Mostly mechanism / observational

48 peer-reviewed studies

What the evidence says

Mostly mechanism / observational

Most Gonadorelin studies are mechanism or observational rather than RCTs that measure a clinical effect — keep findings provisional.

Most evidence is from high-quality meta-analyses and randomised trials published 1976–2026 with a typical study size of 92 participants.

Based on 48 studies · 6 meta-analyses · 26 RCTs · 5,747 total participants

Confidence

High confidence

By outcome

GnRH axis, gonadotropins & diagnostic testing
Mostly mechanism / observational36 studies
Fertility & ovulation inductionPump-delivered pulsatile GnRH reliably induces ovulation and pregnancy in hypothalamic amenorrhea; pulsatile GnRH induces spermatogenesis in hypogonadotropic men · Weeks to months
Mostly mechanism / observational22 studies
Men's vitality & testicular function
Mostly mechanism / observational11 studies
Women's health
Mostly mechanism / observational8 studies
Safety profile
Mostly mechanism / observational3 studies

Steady research

11 studies in the last 5 years · Latest meta-analysis: 2025

197620012026

1Meta-Analysis2016

Li T, Gao L, Chen P, Bu S, Cao D, Yang L · Int Urol Nephrol (2016)

Gonadorelin Research

Mostly mechanism / observational

A systematic review and meta-analysis of comparative studies assessing the efficacy of luteinizing hormone-releasing hormone therapy for children with cryptorchidism.

Hormonal therapy using gonadotropin releasing hormone for improvement of fertility index among children with cryptorchidism: a meta-analysis and systematic review.

Pulsatile gonadotrophin releasing hormone for ovulation induction in subfertility associated with polycystic ovary syndrome.

Efficacy and safety of pulsatile gonadotropin-releasing hormone therapy among patients with idiopathic and functional hypothalamic amenorrhea: a systematic review of the literature and a meta-analysis.

Gonadotropin-releasing hormone (GnRH) analogues for premenstrual syndrome (PMS)

A double blind cross over trial of gonadotrophin releasing hormone (LHRH) in sexually impotent men.

Effect of injection site on the pharmacokinetics and pharmacodynamics of subcutaneously administered luteinizing hormone releasing hormone.

Optimal treatment for spermatogenesis in male patients with hypogonadotropic hypogonadism.

A Randomized Trial of the Effect of a GnRH Analogue Injection on Ghrelin Levels in Girls.

Two-week pulsatile gonadotropin releasing hormone infusion unmasks dual (hypothalamic and Leydig cell) defects in the healthy aging male gonadotropic axis.

Estradiol amplifies the amount of luteinizing hormone (LH) secreted in response to increasing doses of gonadotropin-releasing hormone by specifically augmenting the duration of evoked LH secretory events and hence their mass.

Trial of recombinant follicle-stimulating hormone pretreatment for GnRH-induced fertility in patients with congenital hypogonadotropic hypogonadism.

Signs of sexual behaviour are not increased after subchronic treatment with LHRH in young men.

Changes of serum testosterone and of LH-RH test after treatment of cryptorchidism by intranasal LH-RH.

Endocrinology of gonadotropin-releasing hormone induced cycles in hypothalamic amenorrhea: the role of the pulse dose.

Effect of intranasal LHRH therapy on plasma LH, FSH and testosterone, and relation to clinical results in prepubertal boys with cryptorchidism.

LHRH treatment in unilateral cryptorchidism: effect on testicular descent and hormonal response.

Prospective, randomized comparison between pulsatile GnRH therapy and combined gonadotropin (FSH+LH) treatment for ovulation induction in women with hypothalamic amenorrhea and underlying polycystic ovary syndrome.

LH-RH treatment for cryptorchidism. Randomized study and 10-year follow-up results.

[Cryptorchism. Treatment with human chorionic gonadotropin or gonadotropin-releasing hormone?].