A Study to Evaluate the Safety and Efficacy of Intranasal Esketamine in Treatment-resistant Depression
SYNAPSE
A Double-Blind, Doubly-Randomized, Placebo-Controlled Study of Intranasal Esketamine in an Adaptive Treatment Protocol to Assess Safety and Efficacy in Treatment-Resistant Depression (SYNAPSE)
4 other identifiers
interventional
108
3 countries
25
Brief Summary
The purpose of this study is to assess the efficacy and dose response of intranasal esketamine (Panel A: 28 mg, 56 mg, and 84 mg and Panel B: 14 mg and 56 mg) compared with placebo in improving depressive symptoms in participants with treatment-resistant depression (TRD).
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P50-P75 for phase_2
Started Jan 2014
25 active sites
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
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Study Timeline
Key milestones and dates
First Submitted
Initial submission to the registry
November 25, 2013
CompletedFirst Posted
Study publicly available on registry
December 3, 2013
CompletedStudy Start
First participant enrolled
January 27, 2014
CompletedPrimary Completion
Last participant's last visit for primary outcome
July 21, 2015
CompletedStudy Completion
Last participant's last visit for all outcomes
September 25, 2015
CompletedResults Posted
Study results publicly available
June 12, 2019
CompletedApril 29, 2025
April 1, 2025
1.5 years
November 25, 2013
April 4, 2019
April 25, 2025
Conditions
Keywords
Outcome Measures
Primary Outcomes (2)
Panel A and B: Change From Baseline (Day 1) in Montgomery Asberg Depression Rating Scale (MADRS) Total Score at Day 8- Analysis of Covariance (ANCOVA) Analysis
MADRS is clinician-rated scale designed to measure depression severity, and to detect changes due to antidepressant treatment. Scale consists of 10 items (apparent sadness, reported sadness, inner tension, sleep, appetite, concentration, lassitude, interest level, pessimistic thoughts, and suicidal thoughts), each of which is scored from 0 (item is not present or is normal) to 6 (severe or continuous presence of symptoms), summed for a total possible score of 0 to 60. Higher scores represent more severe condition. A negative change in score indicates improvement.
Baseline (Day 1) and Endpoint (Day 8) of Period 1
Panel A and B: Change From Baseline (Day 8) in Montgomery Asberg Depression Rating Scale Total Score at Day 15- ANCOVA Analysis
MADRS is clinician-rated scale designed to measure depression severity, and to detect changes due to antidepressant treatment. Scale consists of 10 items (apparent sadness, reported sadness, inner tension, sleep, appetite, concentration, lassitude, interest level, pessimistic thoughts, and suicidal thoughts), each of which is scored from 0 (item is not present or is normal) to 6 (severe or continuous presence of symptoms), summed for a total possible score of 0 to 60. Higher scores represent more severe condition. A negative change in score indicates improvement.
Baseline (Day 8) and Endpoint (Day 15) of Period 2
Secondary Outcomes (14)
Panel A and B: Percentage of Participants With Sustained Response Based on MADRS Total Score in Participants Who Have Completed the Double-Blind Phase and Received the Same Treatment for Both Periods
Day 2 Up to Day 15
Panel A and B: Percentage of Participants With Sustained Response Based on MADRS Total Score in Participants Who Received the Same Treatment for Both Periods, Including Participants Who Did Not Complete the Double-blind Phase
Day 2 Up to Day 15
Panel A and B: Percentage of Participants With Response Based on MADRS Total Score
Period 1: Days 1 (2 hour), 2 and 8 of Double-blind Phase
Panel A and B: Percentage of Participants With Response Based on MADRS Total Score
Period 2: Days 1 (2 hour), 2 and 8 of Double-blind Phase
Panel A and B: Percentage of Participants in Remission Based on MADRS Total Score at Days 1, 2 and 8 of Double-blind Phase
Days 1, 2 and 8 of Double-blind Phase of Period 1
- +9 more secondary outcomes
Study Arms (5)
Esketamine 14 mg
EXPERIMENTALParticipants in Panel B will self-administer intranasal esketamine 14 milligram or placebo on Days 1, 4, 8, and 11 during the double-blind phase and intranasal esketamine on Days 15, 18, 22, and 25 during the optional open-label phase. During the optional open-label phase, participants will start with treatment with a 56-mg dose of intranasal esketamine on Day 15 (the dose of esketamine can be adjusted if desired based on the Investigator's clinical judgment of efficacy and tolerability).
Esketamine 28 mg
EXPERIMENTALParticipants in Panel A will self-administer intranasal esketamine 28 mg or placebo on Days 1, 4, 8, and 11 during the double-blind phase and intranasal esketamine on Days 15, 18, 22, 25, 32, 39, 46, 60, and 74 during the optional open-label phase. During the optional open-label phase, all participants will start treatment with a 56-mg dose of intranasal esketamine on Day 15 (the dose of esketamine can be adjusted if desired based on the Investigator's clinical judgment of efficacy and tolerability).
Esketamine 56 mg
EXPERIMENTALParticipants in Panel A and Panel B will self-administer intranasal esketamine 56 mg or placebo on Days 1, 4, 8, and 11 during the double-blind phase. During the optional open-label phase, participants in Panel A will self-administer intranasal esketamine on Days 15, 18, 22, 25, 32, 39, 46, 60, and 74 and participants in Panel B will self-administer intranasal esketamine on Days 15, 18, 22, and 25. During the optional open-label phase, all participants will start treatment with a 56-mg dose of intranasal esketamine on Day 15 (the dose of esketamine can be adjusted if desired based on the Investigator's clinical judgment of efficacy and tolerability).
Esketamine 84 mg
EXPERIMENTALParticipants in Panel A will self-administer intranasal esketamine 84 mg or placebo on Days 1, 4, 8, and 11 during the double-blind phase and intranasal esketamine on Days 15, 18, 22, 25, 32, 39, 46, 60, and 74 during the optional open-label phase. During the optional open-label phase, all participants will start treatment with a 56-mg dose of intranasal esketamine on Day 15 (the dose of esketamine can be adjusted if desired based on the Investigator's clinical judgment of efficacy and tolerability).
Placebo
PLACEBO COMPARATORParticipants in Panel A and B will self-administer intranasal placebo on Days 1 and 4 during the double-blind phase. Depending on response on Day 8, participants will receive intranasal placebo on Days 8 and 11 or be re-randomized to receive intranasal placebo or esketamine at a dose of 28 mg, 56 mg, or 84 mg (Panel A) or 14 mg or 56 mg (Panel B) on Day 8 and Day 11.
Interventions
1 to 6 sprays of esketamine 14 mg self-administered as an intranasal formulation for 4 days (Days 1, 4, 8, 11) during the double-blind phase and if applicable during the optional open-label phase for up to 4 days
1 to 6 sprays of esketamine 28 mg self-administered as an intranasal formulation for 4 days (Days 1,4, 8, 11) during the double-blind phase and if applicable, during the optional open-label phase for up to 9 days
1 to 6 sprays of esketamine 56 mg self-administered as an intranasal formulation for up to 4 days (Days 1, 4, 8, 11) during the double-blind phase and if applicable, during the optional open-label phase for up to 9 days
1 to 6 sprays of esketamine 84 mg self-administered as an intranasal formulation for up to 4 days (Days 1, 4, 8, 11) during the double-blind phase and if applicable, during the optional open-label phase for up to 9 days
1 to 6 sprays of placebo self-administered as an intranasal formulation for 2 days (Days 1 and 4) or depending on response on Day 8, for 4 days (Days 1,4, 8, 11) during the double-blind phase
Eligibility Criteria
You may qualify if:
- Participant must meet Diagnostic and Statistical Manual of Mental Disorders -Fourth Edition -Text Revised (DSM-IV-TR) diagnostic criteria for Major Depressive Disorder (MDD), without psychotic features, based upon clinical assessment, and confirmed by the Mini International Neuropsychiatric Interview (MINI)-Participant's major depressive episode and treatment response must be deemed "valid" by remote independent raters-Participant must have had an inadequate response to at least 2 antidepressants, at least one of which is in the current episode of depression; the antidepressant treatment response questionnaire (ATRQ) will be used to assess antidepressant treatment response during the current episode; prior medication history will be used to determine antidepressant treatment response in prior episode(s) -Have an Inventory of Depressive Symptoms-Clinician rated, 30-item (IDS-C30) total score \>=34 at Screening and predose at Day 1
You may not qualify if:
- Participant has a current DSM-IV-TR diagnosis of bipolar and related disorders, intellectual disability, or cluster b personality disorder (e.g., borderline personality disorder, antisocial personality disorder, histrionic personality disorder, and narcissistic personality disorder) -Participant has a current or prior DSM-IV-TR diagnosis of a psychotic disorder, MDD with psychosis, post-traumatic stress disorder (PTSD), or obsessive compulsive disorder (OCD) -Anatomical or medical conditions that may impede delivery or absorption of study medication (e.g., undergone facial reconstruction, rhinoplasty, significant structural or functional abnormalities of the nose or upper airway; obstructions or mucosal lesions of the nostrils or nasal passages; undergone sinus surgery in the previous 2 years; signs and symptoms of rhinitis) -Has an abnormal or deviated nasal septum with any 1 or more of the following symptoms: blockage of 1 or both nostrils, nasal congestion (especially 1-sided), frequent nosebleeds, frequent sinus infections, and at times has facial pain, headaches, and postnasal drip -Has a history of substance abuse (drug or alcohol) or dependence (except nicotine or caffeine) within the previous 1 year of the screening visit -Participant has known allergies, hypersensitivity, intolerance, or contraindication to esketamine/ketamine or its excipients
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (25)
Unknown Facility
Birmingham, Alabama, United States
Unknown Facility
Garden Grove, California, United States
Unknown Facility
Hartford, Connecticut, United States
Unknown Facility
Jacksonville, Florida, United States
Unknown Facility
Tampa, Florida, United States
Unknown Facility
Atlanta, Georgia, United States
Unknown Facility
Chicago, Illinois, United States
Unknown Facility
Hoffman Estates, Illinois, United States
Unknown Facility
Rockville, Maryland, United States
Unknown Facility
Cedarhurst, New York, United States
Unknown Facility
New York, New York, United States
Unknown Facility
Allentown, Pennsylvania, United States
Unknown Facility
Philadelphia, Pennsylvania, United States
Unknown Facility
Memphis, Tennessee, United States
Unknown Facility
Lede, Belgium
Unknown Facility
Akita, Japan
Unknown Facility
Hiroshima, Japan
Unknown Facility
Ichikawa, Japan
Unknown Facility
Kanzaki, Japan
Unknown Facility
Kashihara, Japan
Unknown Facility
Kitakyushu, Japan
Unknown Facility
Kodaira, Japan
Unknown Facility
Kumamoto, Japan
Unknown Facility
Nagano, Japan
Unknown Facility
Shibukawa, Japan
Related Publications (2)
Perez-Ruixo C, Rossenu S, Zannikos P, Nandy P, Singh J, Drevets WC, Perez-Ruixo JJ. Population Pharmacokinetics of Esketamine Nasal Spray and its Metabolite Noresketamine in Healthy Subjects and Patients with Treatment-Resistant Depression. Clin Pharmacokinet. 2021 Apr;60(4):501-516. doi: 10.1007/s40262-020-00953-4. Epub 2020 Oct 31.
PMID: 33128208DERIVEDDaly EJ, Singh JB, Fedgchin M, Cooper K, Lim P, Shelton RC, Thase ME, Winokur A, Van Nueten L, Manji H, Drevets WC. Efficacy and Safety of Intranasal Esketamine Adjunctive to Oral Antidepressant Therapy in Treatment-Resistant Depression: A Randomized Clinical Trial. JAMA Psychiatry. 2018 Feb 1;75(2):139-148. doi: 10.1001/jamapsychiatry.2017.3739.
PMID: 29282469DERIVED
Related Links
MeSH Terms
Conditions
Interventions
Condition Hierarchy (Ancestors)
Results Point of Contact
- Title
- Senior Director
- Organization
- Janssen Research & Development, LLC
Study Officials
- STUDY DIRECTOR
Janssen Research & Development, LLC Clinical Trial
Janssen Research & Development, LLC
Publication Agreements
- PI is Sponsor Employee
- No
- Restriction Type
- OTHER
- Restrictive Agreement
- Yes
Study Design
- Study Type
- interventional
- Phase
- phase 2
- Allocation
- RANDOMIZED
- Masking
- DOUBLE
- Who Masked
- PARTICIPANT, INVESTIGATOR
- Purpose
- TREATMENT
- Intervention Model
- PARALLEL
- Sponsor Type
- INDUSTRY
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
November 25, 2013
First Posted
December 3, 2013
Study Start
January 27, 2014
Primary Completion
July 21, 2015
Study Completion
September 25, 2015
Last Updated
April 29, 2025
Results First Posted
June 12, 2019
Record last verified: 2025-04