Linzagolix

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Linzagolix
Linzagolix.svg
Linzagolix molecule ball.png
Clinical data
Pronunciation /ˌlɪnzəˈɡoʊlɪks/
LINZ-ə-GOH-liks
Trade names Yselty
Other namesKLH-2109; OBE-2109
Routes of
administration 		By mouth [1] [2]
Drug class GnRH modulator; GnRH antagonist; Antigonadotropin
ATC code
Legal status
Legal status
Identifiers
  • 3-{5-[(2,3-difluoro-6-methoxyphenyl)methoxy]-2-fluoro-4-methoxyphenyl}-2,4-dioxo-1,2,3,4-tetrahydrothieno[3,4-d]pyrimidine-5-carboxylic acid
CAS Number
PubChem CID
ChemSpider
UNII
KEGG
ChEMBL
Chemical and physical data
Formula C22H15F3N2O7S
Molar mass 508.42 g·mol−1
3D model (JSmol)
  • COc1cc(F)c(-n2c(=O)[nH]c3csc(C(=O)O)c3c2=O)cc1OCc1c(OC)ccc(F)c1F
  • InChI=1S/C22H15F3N2O7S/c1-32-14-4-3-10(23)18(25)9(14)7-34-16-6-13(11(24)5-15(16)33-2)27-20(28)17-12(26-22(27)31)8-35-19(17)21(29)30/h3-6,8H,7H2,1-2H3,(H,26,31)(H,29,30)
  • Key:BMAAMIIYNNPHAB-UHFFFAOYSA-N

Linzagolix, sold under the brand name Yselty, is a medication used in the treatment of uterine fibroids and endometriosis. [1] [6] [7] Linzagolix is a small-molecule, non-peptide, orally active gonadotropin-releasing hormone antagonist (GnRH antagonist) developed by Kissei Pharmaceutical and ObsEva. [8] [9] [2]

Contents

In June 2022, it was approved for medical use in the European Union and in the United Kingdom. [1] [5] [10]

Medical uses

Linzagolix is indicated for treatment of moderate to severe symptoms of uterine fibroids in adult women of reproductive age and for treatment of intractable endometriosis. [1] [7]

Available forms

Linzagolix is available as linzagolix choline, the choline salt of linzagolix, in the form of 100 and 200 mg film-coated oral tablets. [6]

Pharmacology

Pharmacodynamics

Linzagolix acts as a selective antagonist of the GnRH receptor, the biological target of GnRH. [6] By blocking this receptor, linzagolix prevents GnRH-mediated secretion of the gonadotropins, luteinizing hormone (LH) and follicle-stimulating hormone (FSH), and prevents them from signaling the gonads to produce sex hormones including estrogens, progesterone, and androgens. [6] [11]

In clinical studies, linzagolix fully suppressed estradiol levels (median <20 pg/mL) in women at a dosage of 200 mg/day, whereas partial suppression of estradiol levels (median 20–60 pg/mL) occurred at a dosage 100 mg/day. [6] Progesterone levels were also variably suppressed with these dosages. [6]

Pharmacokinetics

The elimination half-life of linzagolix with repeated administration is approximately 15 hours. [6]

Society and culture

On 16 December 2021, and on 22 April 2022, the Committee for Medicinal Products for Human Use (CHMP) of the European Medicines Agency (EMA) adopted a positive opinion, recommending the granting of a marketing authorization for the medicinal product Yselty, intended for the treatment of symptoms of uterine fibroids. [12] The applicant for this medicinal product is ObsEva Ireland Ltd. [12] Linzagolix was approved for medical use in the European Union in June 2022. [1] [5]

Brand names

Linzagolix is sold under the brand name Yselty. [6]

Availability

Linzagolix is available in the European Union and in the United Kingdom. [6] [10]

References

  1. 1 2 3 4 5 6 "Yselty EPAR". European Medicines Agency (EMA). 14 December 2021. Retrieved 19 August 2022. Text was copied from this source which is copyright European Medicines Agency. Reproduction is authorized provided the source is acknowledged.
  2. 1 2 Ezzati M, Carr BR (January 2015). "Elagolix, a novel, orally bioavailable GnRH antagonist under investigation for the treatment of endometriosis-related pain". Women's Health. 11 (1): 19–28. doi: 10.2217/whe.14.68 . PMID   25581052.
  3. ↑ "YSELTY (Theramex Australia Pty Ltd) | Therapeutic Goods Administration (TGA)". Archived from the original on 16 April 2025. Retrieved 7 September 2025.
  4. ↑ "Linzagolix". Specialist Pharmacy Service. 8 August 2022. Archived from the original on 25 August 2022. Retrieved 24 August 2022.
  5. 1 2 3 "Yselty Product information". European Commission. EU/1/21/1606. Retrieved 24 June 2022.
  6. 1 2 3 4 5 6 7 8 9 "Yselty film-coated tablets" (PDF). Theramex Ireland Limited. European Medicines Agency.
  7. 1 2 England, N. H. S. (1 May 2025). "NHS England » New endometriosis pill on the NHS could benefit more than 1,000 women a year". www.england.nhs.uk. Retrieved 22 May 2025.
  8. ↑ "Linzagolix - Kissei Pharmaceutical/ObsEva". AdisInsight. Springer Nature Switzerland AG.
  9. ↑ Chodankar R, Allison J (2018). "New Horizons in Fibroid Management". Current Obstetrics and Gynecology Reports. 7 (2): 106–115. doi: 10.1007/s13669-018-0242-6 . ISSN   2161-3303.
  10. 1 2 "ObsEva Announces UK MHRA Marketing Authorization for Yselty (linzagolix), an Oral GnRH Antagonist, for the Treatment of Uterine Fibroids" (Press release). ObsEva. 28 June 2022. Retrieved 24 August 2022– via GlobeNewswire.
  11. ↑ Kotlyar AM, Pal L, Taylor HS (December 2021). "Eliminating Hormones With Orally Active Gonadotropin-releasing Hormone Antagonists". Clinical Obstetrics and Gynecology. 64 (4): 837–849. doi:10.1097/GRF.0000000000000664. PMID   34668887. S2CID   239034628.
  12. 1 2 "Yselty: Pending EC decision". European Medicines Agency. 16 December 2021. Archived from the original on 18 December 2021. Retrieved 18 December 2021. Text was copied from this source which is copyright European Medicines Agency. Reproduction is authorized provided the source is acknowledged.

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