Degarelix
Degarelix (trade name Firmagon) is a synthetic decapeptide and a gonadotropin-releasing hormone (GnRH) receptor antagonist. Unlike GnRH agonists, it blocks the receptor directly and does not trigger an initial testosterone surge (flare). It is an approved prescription medicine for the treatment of advanced, hormone-dependent prostate cancer. This page neutrally summarizes the evidence base and legal status and is not a usage or dosing recommendation.
Mechanism of action
Degarelix is a competitive GnRH receptor antagonist. It binds reversibly and immediately to the pituitary GnRH receptors and blocks their activation. This rapidly suppresses the release of luteinizing hormone (LH) and follicle-stimulating hormone (FSH), which in turn lowers testosterone production in the testes. Unlike GnRH agonists (e.g., leuprorelin), which first cause a transient stimulation with a testosterone surge (flare), this direct antagonism lacks the initial stimulation phase, so testosterone declines without a preceding rise. This mechanism underlies the literature-described use in hormone-dependent prostate cancer.
Bewijs in één oogopslag
Wat de studies laten zien
Waar studies elkaar tegenspreken
Does the GnRH antagonist degarelix lower cardiovascular risk compared with GnRH agonists?
Farmacokinetiek
Theoretische concentratiecurve bij een halfwaardetijd van 1320 h. Puur farmacokinetisch model — geen doseringsaanbeveling.
Open in PK tool →Toedieningswegen in de literatuur
Veiliger gebruik & risico's
Bekende bijwerkingen uit studies
Interacties & combinaties
Anekdotische waarnemingen
Wat online communities bespreken
Juridische status per land
Reconstitutie-calculator
Peptiden komen als droog poeder. Eenmaal opgelost in een vloeistof (reconstitutie) beantwoordt deze calculator één enkele vraag: hoeveel stof zit er daarna in één milliliter oplossing?
- 1Voer de hoeveelheid stof van de flacon in (staat op het etiket).
- 2Voer in hoeveel oplosmiddel je toevoegt.
- 3Resultaat = concentratie in mg per mL.
Studieregister
The efficacy and safety of degarelix: a 12-month, comparative, randomized, open-label, parallel-group phase III study in patients with prostate cancer
Additional analysis of the secondary end point of biochemical recurrence rate in a phase 3 trial (CS21) comparing degarelix 80 mg versus leuprolide in prostate cancer patients segmented by baseline characteristics
The effect of baseline testosterone on the efficacy of degarelix and leuprolide: further insights from a 12-month, comparative, phase III study in prostate cancer patients
Cardiovascular morbidity associated with gonadotropin releasing hormone agonists and an antagonist
Bronnen & methode
Ontvang nieuwe studies over Degarelix
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