Cited by 128Endometriosis Research and TreatmentMenstrual Health and DisordersEctopic Pregnancy Diagnosis and Management

Treatment of endometriosis-associated pain with linzagolix, an oral gonadotropin-releasing hormone–antagonist: a randomized clinical trial

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Donnez, Jacques, Taylor, Hugh S., Taylor, Robert N., Akin, Mark D., Tatarchuk, Tatyana F., Wilk, Krzysztof, Gotteland, Jean-Pierre, Lecomte, Veronique +1 more·2020·Fertility and Sterility

Abstract

Objective To study the effect of a new investigational oral gonadotropin-releasing hormone antagonist, linzagolix, on endometriosis-associated pain (EAP).Design A multinational, parallel group, randomized, placebo-controlled, double-blind, dose-ranging trial.Setting Clinical centers.Patient(s) Women aged 18-45 years with surgically confirmed endometriosis and moderate-to-severe EAP.Intervention(s) The interventions were 50, 75, 100, or 200 mg linzagolix (or matching placebo) administered once daily for 24 weeks.Main outcome measure(s) The primary endpoint was the number of responders (≥30% reduction in overall pelvic pain) after 12 weeks. Other endpoints included dysmenorrhea, non-menstrual pelvic pain, serum estradiol, amenorrhea, quality of life (QoL) measures, and bone mineral density (BMD).Result(s) Compared with placebo, doses ≥ 75 mg resulted in a significantly greater proportion of responders for overall pelvic pain at 12 weeks (34.5%, 61.5%, 56.4%, and 56.3% for placebo, 75, 100, and 200 mg, respectively). A similar pattern was seen for dysmenorrhea and non-menstrual pelvic pain. The effects were maintained or increased at 24 weeks. Serum estradiol was suppressed, QoL improved, and the rate of amenorrhea increased in a dose-dependent fashion. Mean BMD loss (spine) at 24 weeks was <1% at doses of 50 and 75 mg and increased in a dose-dependent fashion up to 2.6% for 200 mg. BMD of femoral neck and total hip showed a similar pattern.Conclusion(s) Linzagolix significantly reduced EAP and improved QoL at doses of 75-200 mg and decreased BMD dose-dependently.Clinical trial registration number NCT02778399.

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Crossref · 10.1016/j.fertnstert.2020.02.114

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  • Doses ≥ 75 mg of linzagolix resulted in a significantly greater proportion of responders for overall pelvic pain, dysmenorrhea and non-menstrual pelvic pain after 12 and 24 weeks treatment.

    “Doses ≥ 75 mg resulted in a significantly greater proportion of responders for overall pelvic pain, dysmenorrhea and non-menstrual pelvic pain after 12 and 24 weeks treatment.”

    From Hormonal treatments for endometriosis: The endocrine background (2022) · cites this paper as [181]

    The Secondary Efficacy Endpoints section reports significantly higher responder rates at week 12 for dysmenorrhea at 75, 100, and 200 mg, but for non-menstrual pelvic pain only at 75 and 100 mg; the 200 mg result was not significant (P=.297). It says responder rates were maintained or increased at week 24, but the Figure 1 caption states that no statistical testing was performed then because there was no placebo control. The claim overstates both the dose-wide significance and the significance at 24 weeks. (LLM, conf=0.92)

    Experimental — accuracy not yet measured
  • With linzagolix, serum estradiol was suppressed, QoL improved, and the rate of amenorrhea increased in a dose-dependent fashion.

    “Serum estradiol was suppressed, QoL improved, and the rate of amenorrhea increased in a dose-dependent fashion.”

    From Hormonal treatments for endometriosis: The endocrine background (2022) · cites this paper as [181]

    Experimental — accuracy not yet measured
  • With linzagolix, mean BMD loss (spine) increased in a dose-dependent manner and was < 1% at 24 weeks at doses of 50 and 75 mg and up to 2.6% for 200 mg.

    “Also mean BMD loss (spine) increased in a dose-dependent manner and was < 1% at 24 weeks at doses of 50 and 75 mg and up to 2.6% for 200 mg.”
  • Relugolix and linzagolix are two new oral GnRH antagonists in an advanced stage of clinical development for the management of pain associated with endometriosis.

    “Relugolix and linzagolix are the two new oral GnRH antagonists, in an advanced stage of clinical development for the management of pain associated with endometriosis [180, 181].”
  • A significant reduction in overall pelvic pain was already evident four to eight weeks after starting linzagolix treatment.

    “A significant reduction in overall pelvic pain was already evident four to eight weeks after starting treatment.”

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Research works printed but not linked: 3

  1. [1]1. Bulun SE, Yilmaz BD, Sison C, Miyazaki K, Bernardi L, Liu S, et al. Endome- triosis. Endocrine Rev. 2019;40:1048-79.
  2. [2]2. Zondervan KT, Becker CM, Koga K, Missmer SA, Taylor RN, Vigano P. Endo- metriosis. Nat Rev Dis Primers 2018;4:9.
  3. [17]17. Dragoman MV, Gaffield ME. The safety of subcutaneously administered depot medroxyprogesterone acetate (104mg/0.65mL): a systematic review. Contraception 2016;94:202-15.

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Authors
Donnez, J., Taylor, H. S., Taylor, R. N., Akin, M. D., Tatarchuk, T. F., Wilk, K., Gotteland, J.-P., Lecomte, V., & Bestel, E.
Affiliations
  • UCLouvain (BE)
  • Yale University (US)
  • University of Utah (US)
  • Texas Fertility Center (US)
  • ObsEva (Switzerland) (CH)
Corresponding author
Bestel, Elke
Venue
Fertility and Sterility
Publisher
Elsevier BV
Published
2020-07
Volume
114
Issue
1
Pages
44-55
ISSN
0015-0282 (ISSN-L)
OpenAlex
W3033596374
Cited by
124
References
32
Citations by year
2026: 22 · 2025: 17 · 2024: 19 · 2023: 21 · 2022: 21 · 2021: 19 · 2020: 5
FWCI
14.53
Type
journal article
Language
en
Open access
Locations
  • Fertility and Sterility (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Reproductive Medicine › Endometriosis Research and Treatment
  • Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Menstrual Health and Disorders
  • Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Ectopic Pregnancy Diagnosis and Management
Keywords
linzagolix, endometriosis-associated pain, dysmenorrhea, non-menstrual pelvic pain, estradiol suppression, amenorrhea, bone mineral loss, quality of life, dose-response relationship
MeSH terms
Administration, Oral, Adolescent, Adult, Carboxylic Acids, Dose-Response Relationship, Drug, Double-Blind Method, Endometriosis, Female, Hormone Antagonists, Humans, Gonadotropin-Releasing Hormone, Middle Aged, Organic Chemicals, Pyrimidines, Uterine Diseases, Treatment Outcome, Pelvic Pain, Young Adult, Chronic Pain

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