Cited by 40Treatment of Major DepressionNeuroscience and Neuropharmacology ResearchMaternal Mental Health During Pregnancy and Postpartum

Effects of Open-Label, Adjunctive Ganaxolone on Persistent Depression Despite Adequate Antidepressant Treatment in Postmenopausal Women: A Pilot Study

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Dichtel, Laura E., Nyer, Maren, Dording, Christina, Fisher, Lauren B., Cusin, Cristina, Shapero, Benjamin G., Pedrelli, Paola, Kimball, Allison S. +4 more·2020·The Journal of Clinical Psychiatry

Abstract

OBJECTIVE: The neuroactive steroid metabolite of progesterone, allopregnanolone, is a positive allosteric modulator of γ-aminobutyric acid-A (GABAA) receptors and a putative treatment for mood disorders. This pilot study was performed to determine whether an oral allopregnanolone analog (ganaxolone) may be effective adjunctive therapy for persistent depression despite adequate antidepressant treatment in postmenopausal women. METHOD: Ten postmenopausal women (mean ± SD age: 62.8 ± 6.3 years; range, 53-69 years) with persistent depression despite adequate antidepressant treatment (current DSM-IV-TR major depressive episode per the Structured Clinical Interview for DSM-IV-TR, Montgomery-Asberg Depression Rating Scale [MADRS] score ≥ 16, and treated with an adequately dosed antidepressant for ≥ 6 weeks) were studied from December 2016 to April 2018. Open-label ganaxolone (225 mg twice daily, increased to 450 mg twice daily if tolerated) was administered for 8 weeks, followed by a 2-week taper. RESULTS: Mean ± SEM total MADRS score (primary endpoint) decreased by 8 weeks (24.4 ± 1.6 to 12.8 ± 2.9, P = .015), and the decrease persisted over the 2-week taper (P = .019); of the 9 subjects who completed the full 8-week treatment period, 44% (4/9) experienced response (MADRS score decrease ≥ 50%) and remission (final MADRS score < 10), which persisted in 100% and 50% of subjects at 10 weeks, respectively. Secondary endpoints showed significant improvement, including Inventory of Depressive Symptomatology-Self-Report score (P = .003), MADRS reduced sleep subscale score (P < .001), total Symptoms of Depression Questionnaire (SDQ) score (P = .012), and scores on SDQ subscales for disruptions in sleep quality (P = .003) and changes in appetite and weight (P = .009) over 8 weeks. No significant effects were observed on quality of life or sexual function. All subjects experienced sleepiness and fatigue; 60% experienced dizziness. CONCLUSIONS: In this open-label, uncontrolled pilot study, adjunctive ganaxolone appears to exert antidepressant effects but produces sedation with twice-daily dosing. Ganaxolone may also improve sleep, which may be useful in patients with depression and insomnia. TRIAL REGISTRATION: ClinicalTrials.gov identifier: NCT02900092.

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Authors
Dichtel, L. E., Nyer, M., Dording, C., Fisher, L. B., Cusin, C., Shapero, B. G., Pedrelli, P., Kimball, A. S., Rao, E. M., Mischoulon, D., Fava, M., & Miller, K. K.
Affiliations
  • Harvard University (US)
  • Massachusetts General Hospital (US)
Venue
The Journal of Clinical Psychiatry
Published
2020-06-09
Volume
81
Issue
4
ISSN
  • 0160-6689 (ISSN-L)
  • 1555-2101
OpenAlex
W3034622008
Cited by
40
References
2
Citations by year
2026: 2 · 2025: 6 · 2024: 8 · 2023: 9 · 2022: 4 · 2021: 10 · 2020: 1
FWCI
3.60
Type
journal article
Language
en
Open access
Locations
  • The Journal of Clinical Psychiatry (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
  • Digital Access to Scholarship at Harvard (DASH) (Harvard University) (acceptedVersion)
Funders
  • National Institute on Alcohol Abuse and Alcoholism (K23AA020064)
  • National Heart, Lung, and Blood Institute (K24HL092902)
  • National Institute of Diabetes and Digestive and Kidney Diseases (K23DK113220, T32DK007028)
  • National Center for Complementary and Integrative Health (K23AT008043)
Topics
  • Health Sciences › Medicine › Pharmacology › Treatment of Major Depression
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Maternal Mental Health During Pregnancy and Postpartum
Keywords
ganaxolone, allopregnanolone, neurosteroids, dysthymia, treatment-resistant depression, postmenopausal women, adjunctive therapy, GABA-A receptor modulation, sleep disorders, mood disorders, antidepressant treatment, adverse effects, sexual function, quality of life, dizziness, sleepiness
MeSH terms
Aged, Antidepressive Agents, Depressive Disorder, Major, Major Depressive Disorder, Drug Therapy, Combination, Female, Humans, Middle Aged, Pilot Projects, Pregnanolone, Treatment Outcome, Postmenopause, GABA Modulators, Depressive Disorder, Treatment-Resistant

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