Clinical data | |
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Pronunciation | /zʊˈrænəloʊn/ zuu-RAN-ə-lohn |
Trade names | Zurzuvae |
Other names | SAGE-217; S-812217; SGE-797; BIIB-125 |
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Routes of administration | By mouth |
Drug class | Neurosteroid; GABAA receptor positive allosteric modulator |
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Pharmacokinetic data | |
Protein binding | 99.5% [2] [ unreliable medical source? ] |
Metabolism | CYP3A4 [2] [ unreliable medical source? ] |
Elimination half-life | 16–23 hours [3] [4] |
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ECHA InfoCard | 100.271.331 |
Chemical and physical data | |
Formula | C25H35N3O2 |
Molar mass | 409.574 g·mol−1 |
3D model (JSmol) | |
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Zuranolone, sold under the brand name Zurzuvae, is a medication used for the treatment of postpartum depression. [5] [6] It is taken by mouth. [5]
The most common side effects include drowsiness, dizziness, diarrhea, fatigue, nasopharyngitis, and urinary tract infection. [5] [6] An orally active inhibitory pregnane neurosteroid, zuranolone acts as a positive allosteric modulator of the GABAA receptor. [7] [8] [9]
Zuranolone was approved for medical use in the United States for the treatment of postpartum depression in August 2023. [6] It was developed by Sage Therapeutics and Biogen. [10]
Zuranolone is indicated for the treatment of postpartum depression. [5] [6]
The most common side effects include drowsiness, dizziness, diarrhea, fatigue, and urinary tract infection. [6]
The US FDA label contains a boxed warning noting that zuranolone can impact a person's ability to drive and perform other potentially hazardous activities. [6] The use of zuranolone may cause suicidal thoughts and behavior. [6] Zuranolone may also cause fetal harm. [6]
Zuranolone was developed as an improvement on the intravenously administered neurosteroid brexanolone, with high oral bioavailability and a biological half-life suitable for once-daily administration. [8] [11] Its half-life is around 16 to 23 hours, compared to approximately 9 hours for brexanolone. [3] [4]
The efficacy of zuranolone for the treatment of postpartum depression in adults was demonstrated in two randomized, double-blind, placebo-controlled, multicenter studies. [6] The trial participants were women with postpartum depression who met the Diagnostic and Statistical Manual of Mental Disorders criteria for a major depressive episode and whose symptoms began in the third trimester or within four weeks of delivery. [6] In study 1, participants received 50 mg of zuranolone or placebo once daily in the evening for 14 days. [6] In study 2, participants received another zuranolone product that was approximately equal to 40 mg of zuranolone or placebo, also for 14 days. [6] Participants in both studies were monitored for at least four weeks after the 14-day treatment. [6] The primary endpoint of both studies was the change in depressive symptoms using the total score from the 17-item Hamilton depression rating scale (HAMD-17), measured at day 15. [6] Participants in the zuranolone groups showed significantly more improvement in their symptoms compared to those in the placebo groups. [6] The treatment effect was maintained at day 42—four weeks after the last dose of zuranolone. [6]
Zuranolone is the international nonproprietary name. [12]
Zuranolone was approved by the US Food and Drug Administration (FDA) for the treatment of postpartum depression in August 2023. [6] [13] The FDA granted the application for zuranolone priority review and fast track designations. [6] Approval of Zurzuvae was granted to Sage Therapeutics, Inc. [6]
Zuranolone has also been under development for the treatment of major depressive disorder, but the application for this use was given a Complete Response Letter (CRL) by the FDA due to insufficient evidence of effectiveness. [14]
In the United States, zuranolone is a Schedule IV controlled substance.
In a randomized, placebo-controlled phase III trial to assess its efficacy and safety for the treatment of major depressive disorder, subjects in the zuranolone group (50 mg oral zuranolone once daily for 14 days) experienced statistically significant and sustained improvements in depressive symptoms (as measured by HAM-D score) throughout the treatment and follow-up periods of the study. [15]
Other investigational applications include insomnia, bipolar depression, essential tremor, and Parkinson's disease. [16] [7] [17]
Neurosteroids, also known as neuroactive steroids, are endogenous or exogenous steroids that rapidly alter neuronal excitability through interaction with ligand-gated ion channels and other cell surface receptors. The term neurosteroid was coined by the French physiologist Étienne-Émile Baulieu and refers to steroids synthesized in the brain. The term, neuroactive steroid refers to steroids that can be synthesized in the brain, or are synthesized by an endocrine gland, that then reach the brain through the bloodstream and have effects on brain function. The term neuroactive steroids was first coined in 1992 by Steven Paul and Robert Purdy. In addition to their actions on neuronal membrane receptors, some of these steroids may also exert effects on gene expression via nuclear steroid hormone receptors. Neurosteroids have a wide range of potential clinical applications from sedation to treatment of epilepsy and traumatic brain injury. Ganaxolone, a synthetic analog of the endogenous neurosteroid allopregnanolone, is under investigation for the treatment of epilepsy.
Acamprosate, sold under the brand name Campral, is a medication which reduces alcoholism cravings. It is thought to stabilize chemical signaling in the brain that would otherwise be disrupted by alcohol withdrawal. When used alone, acamprosate is not an effective therapy for alcohol use disorder in most individuals, as it only addresses withdrawal symptoms and not psychological dependence. It facilitates a reduction in alcohol consumption as well as full abstinence when used in combination with psychosocial support or other drugs that address the addictive behavior.
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Allopregnanolone is a naturally occurring neurosteroid which is made in the body from the hormone progesterone. As a medication, allopregnanolone is referred to as brexanolone, sold under the brand name Zulresso, and used to treat postpartum depression. It is given by injection into a vein.
Gepirone, sold under the brand name Exxua, is a medication used for the treatment of major depressive disorder. It is taken orally.
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Isopregnanolone, also known as isoallopregnanolone and epiallopregnanolone, as well as sepranolone, and as 3β-hydroxy-5α-pregnan-20-one or 3β,5α-tetrahydroprogesterone (3β,5α-THP), is an endogenous neurosteroid and a natural 3β-epimer of allopregnanolone. It has been reported to act as a subunit-selective negative allosteric modulator of the GABAA receptor, and antagonizes in animals and humans some but not all of the GABAA receptor-mediated effects of allopregnanolone, such as anesthesia, sedation, and reduced saccadic eye movements, but not learning impairment. Isopregnanolone has no hormonal effects and appears to have no effect on the GABAA receptor by itself; it selectively antagonizes allopregnanolone and does not affect the effects of other types of GABAA receptor positive allosteric modulators such as benzodiazepines or barbiturates.
Basimglurant (INN) is a negative allosteric modulator of the mGlu5 receptor which is under development by Roche and Chugai Pharmaceutical for the treatment of treatment-resistant depression and fragile X syndrome. As of November 2016, it has undergone phase II clinical trials for both of these indications.
Lumateperone, sold under the brand name Caplyta, is an atypical antipsychotic medication of the butyrophenone class. It is approved for the treatment of schizophrenia as well as bipolar depression, as either monotherapy or adjunctive therapy. It is developed by Intra-Cellular Therapies, licensed from Bristol-Myers Squibb. Lumateperone was approved for medical use in the United States in December 2019 with an initial indication for schizophrenia, and became available in February 2020. It has since demonstrated efficacy in bipolar depression and received FDA approval in December 2021 for depressive episodes associated with both bipolar I and II disorders.
Fasedienol, also known as 4-androstadienol or as 4,16-androstadien-3β-ol, is a pherine which is under development by VistaGen Therapeutics in a nasal spray formulation (PRN) for the acute treatment of social anxiety disorder. It is also being investigated by VistaGen Therapeutics for the treatment of generalized anxiety disorder (GAD) and post-traumatic stress disorder (PTSD). The pherine is a positional isomer of the endogenous pheromone androstadienol. As of 2020, it is in phase III clinical trials for social anxiety disorder.
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