A Study of SLS-002 (Intranasal Racemic Ketamine) in Adults With Major Depressive Disorder at Imminent Risk of Suicide
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ClinicalTrials.gov Identifier: NCT04669665 |
Recruitment Status :
Recruiting
First Posted : December 17, 2020
Last Update Posted : January 4, 2023
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Condition or disease | Intervention/treatment | Phase |
---|---|---|
Depressive Disorder, Major Suicidal | Drug: SLS-002 Drug: Placebo Other: Standard of care Device: Intranasal device | Phase 2 |
This is a 2-part study: Part 1 is open-label, while Part 2 is a randomized, double-blind, placebo-controlled, multicenter study. The study will enroll participants with MDD for whom a physician has assessed to be at risk for suicide. The study will consist of a screening evaluation, a treatment period, and a safety follow-up period. Participants' safety will be evaluated throughout the study. If you or a loved one are having thoughts of suicide, please seek immediate medical help. Go to the emergency room or call the National Suicide Prevention Lifeline at 1-800-273-8255.
Potential participants may visit http://frontiersstudy.com/
Study Type : | Interventional (Clinical Trial) |
Estimated Enrollment : | 236 participants |
Allocation: | Randomized |
Intervention Model: | Parallel Assignment |
Intervention Model Description: | Part 1 is a single group. Part 2 is a parallel group 1:1 randomization of SLS-002 to placebo, plus standard of care. |
Masking: | Quadruple (Participant, Care Provider, Investigator, Outcomes Assessor) |
Masking Description: | Part 1 is open-label. Part 2 is a double-blind placebo-controlled study. |
Primary Purpose: | Treatment |
Official Title: | A 2-part Phase 2 Study to Assess the Efficacy, Safety, and Tolerability of SLS-002 (Intranasal Racemic Ketamine) Administered to Adults With Major Depressive Disorder at Imminent Risk of Suicide |
Actual Study Start Date : | December 17, 2020 |
Estimated Primary Completion Date : | June 2023 |
Estimated Study Completion Date : | June 2023 |

Arm | Intervention/treatment |
---|---|
Experimental: SLS-002 + Standard of care
Participants will receive SLS-002 (intranasal racemic ketamine) 90 milligram (mg) two times per week for 2 weeks with standard of care treatment
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Drug: SLS-002
Intranasal racemic ketamine hydrochloride 90 milligrams (mg)
Other Name: Ketamine hydrochloride Other: Standard of care Standard of care treatment will be determined by the treating physician(s) based on clinical judgement and practice guidelines Device: Intranasal device Device to deliver intranasal solution |
Placebo Comparator: Placebo + Standard of care
Participants will receive intranasal placebo two times per week for 2 weeks with standard of care treatment
|
Drug: Placebo
Intranasal placebo Other: Standard of care Standard of care treatment will be determined by the treating physician(s) based on clinical judgement and practice guidelines Device: Intranasal device Device to deliver intranasal solution |
- Change From Baseline in Montgomery-Åsberg Depression Rating Scale (MADRS) Total Score at 24 Hours Post First Dose [ Time Frame: Baseline (Day 1, predose) and 24 hours post first dose (Day 2) ]MADRS is clinician-rated scale designed to be used in participants with Major Depressive Disorder (MDD) to measure depression severity and detect changes due to antidepressant treatment. It evaluates apparent sadness, reported sadness, inner tension, sleep, appetite, concentration, lassitude, interest level, pessimistic and suicidal thoughts. Scale consists of 10 items, each of which is scored from 0 (item not present or normal) to 6 (severe or continuous presence of symptoms), summed for total possible score of 0 to 60.
- Change From Baseline in Clinical Global Impression of Severity for Suicidal Ideation and Behavior (CGIS-SI/B) Scale at 24 Hours Post First Dose [ Time Frame: Baseline (Day 1, predose) and 24 hours post first dose (Day 2) ]Clinical global impression of severity for suicidal ideation and behavior (CGIS-SI/B) scale is revised version of the clinical global impression severity scale (CGI-S), a global rating scale that gives an overall measure of the severity of a participant's illness. The CGIS-SI/B summarizes the clinician's overall impression of severity of suicidal ideation and behavior on a 5-point scale from 1 (not at all suicidal) to 5 (among the most extremely suicidal), based on the totality of information available to the clinician.
- Change from Baseline in Sheehan-Suicidality Tracking Scale Clinically Meaningful Change Measure (S-STS CMCM) Total Score at 24 hours post first dose (Day 2) [ Time Frame: Baseline (Day 1, predose) and 24 hours post first dose (Day 2) ]The Sheehan-Suicidality Tracking Scale Clinically Meaningful Change Measure (S-STS CMCM) is a clinician-rated outcome measure which assesses suicidal ideation and behavior on a standard 22-item scale, as well as multiple patient and clinician-rated items. The first 16 items are rated on a Likert-type scale ranging from 0 = not at all to 4 = extremely, where select scoring (i.e., 4 specific items are scored based on the highest score on 2 of those items) yields a total score ranging from 0 to 52.
- Change From Baseline in Patient Global Impression of Severity for Suicidal Ideation and Behavior (PGIS-SI/B) Scale at 24 Hours Post First Dose [ Time Frame: Baseline (Day 1, predose) and 24 hours post first dose (Day 2) ]Patient global impression of severity for suicidal ideation and behavior (PGIS-SI/B) scale is revised version of the patient global impression severity scale (PGI-S), a global rating scale that gives the patient's perspective on their overall severity of suicidal impulses, thoughts, and behaviors. The PGIS-SI/B summarizes the patient's overall impression of severity of suicidal ideation and behavior on a 5-point scale from 1 (not present) to 5 (extremely severe).
- Change From Baseline in Montgomery-Åsberg Depression Rating Scale (MADRS) Total Score at Day 16 [ Time Frame: Baseline (Day 1, predose) and 2 weeks post first dose (Day 16) ]MADRS is clinician-rated scale designed to be used in participants with Major Depressive Disorder (MDD) to measure depression severity and detect changes due to antidepressant treatment. It evaluates apparent sadness, reported sadness, inner tension, sleep, appetite, concentration, lassitude, interest level, pessimistic and suicidal thoughts. Scale consists of 10 items, each of which is scored from 0 (item not present or normal) to 6 (severe or continuous presence of symptoms), summed for total possible score of 0 to 60.
- Change From Baseline in Clinical Global Impression of Severity for Suicidal Ideation and Behavior (CGIS-SI/B) Scale at Day 16 [ Time Frame: Baseline (Day 1, predose) and 2 weeks post first dose (Day 16) ]Clinical global impression of severity for suicidal ideation and behavior (CGIS-SI/B) scale is revised version of the clinical global impression severity scale (CGI-S), a global rating scale that gives an overall measure of the severity of a participant's illness. The CGIS-SI/B summarizes the clinician's overall impression of severity of suicidal ideation and behavior on a 5-point scale from 1 (not at all suicidal) to 5 (among the most extremely suicidal), based on the totality of information available to the clinician.
- Change from Baseline in Sheehan-Suicidality Tracking Scale Clinically Meaningful Change Measure (S-STS CMCM) Total Score at Day 16 [ Time Frame: Baseline (Day 1, predose) and 2 weeks post first dose (Day 16) ]The Sheehan-Suicidality Tracking Scale Clinically Meaningful Change Measure (S-STS CMCM) is a clinician-rated outcome measure which assesses suicidal ideation and behavior on a standard 22-item scale, as well as multiple patient and clinician-rated items. The first 16 items are rated on a Likert-type scale ranging from 0 = not at all to 4 = extremely.
- Change From Baseline in Patient Global Impression of Severity for Suicidal Ideation and Behavior (PGIS-SI/B) Scale at Day 16 [ Time Frame: Baseline (Day 1, predose) and 2 weeks post first dose (Day 16) ]Patient global impression of severity for suicidal ideation and behavior (PGIS-SI/B) scale is revised version of the patient global impression severity scale (PGI-S), a global rating scale that gives the patient's perspective on their overall severity of suicidal impulses, thoughts, and behaviors. The PGIS-SI/B summarizes the patient's overall impression of severity of suicidal ideation and behavior on a 5-point scale from 1 (not present) to 5 (extremely severe).

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.
Ages Eligible for Study: | 18 Years to 65 Years (Adult, Older Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | No |
Inclusion Criteria:
- Participant with diagnosis of current MDD (unipolar without psychotic features) per Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (DSM-5), with symptoms present for at least 4 weeks, based on psychiatric intake and confirmed by the Mini International Psychiatric Interview Version 7.02 for Suicidality Disorders (MINI).
- Participant has a Montgomery Åsberg Depression Rating Scale (MADRS) total score of ≥28 predose on Day 1, and has a score of 5 or 6 on item 10.
- Participant has a Clinical Global Impression of Severity for Suicidal Ideation and Behavior (CGIS-SI/B) score of ≥4 predose on Day 1.
- Participant requires psychiatric hospitalization due to significant risk of suicide, has ≥15 on the S-STS CMCM total score, and a score of 6-9 (inclusive) on the S-STS CMCM Clinician judgment of subject's risk of a suicide attempt or death by suicide at this time.
- Participant has a history of previous suicide attempt(s), as confirmed on the Columbia Suicide Severity Rating Scale (C-SSRS) with a history of at least one actual attempt, or if the attempt was interrupted or aborted, is judged to have been serious in intent.
- Participant is willing and able to take prescribed non-investigational antidepressant therapy(ies) at investigator's discretion for at least the duration of the study.
Exclusion Criteria:
- Participant has seizures, intellectual disability, a neurocognitive disorder or a lifetime diagnosis of bipolar disorder, any mood disorder with psychotic features, schizophrenia or other psychotic disorder, obsessive compulsive disorder, or antisocial personality disorder.
- In the investigator's opinion, participant has chronic, refractory treatment-resistant depression from >4 adequate therapeutic trials of antidepressants (with or without adjuvants and/or ECT) as confirmed by Antidepressant Treatment Response Questionnaire (ATRQ).
- Participant has a body mass index (BMI) >40 or <18 at screening, uncontrolled hypertension, or any clinically significant medical condition that might confound the results.
- Participant meets the DSM-5 criteria for moderate or severe substance use disorder or a positive urine test for drugs of abuse.
- Participant does not meet or is not willing to comply with the requirements listed in prohibited and restricted medications and therapies in the protocol, as well as required washout periods prior to participation.

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT04669665
Contact: SLS-002 Study Team | 646-293-2100 | SLS002team@seelostx.com |
United States, Arizona | |
Seelos Investigational Site | Active, not recruiting |
Tempe, Arizona, United States, 85284 | |
United States, California | |
Seelos Investigational Site | Withdrawn |
Culver City, California, United States, 90230 | |
Seelos Investigational Site | Withdrawn |
Glendale, California, United States, 91206 | |
Seelos Investigational Site | Recruiting |
Orange, California, United States, 92868 | |
Contact SLS002team@seelostx.com | |
Seelos Investigational Site | Recruiting |
Panorama City, California, United States, 91402 | |
Contact SLS002team@seelostx.com | |
Seelos Investigational Site | Recruiting |
San Diego, California, United States, 92103 | |
Contact SLS002team@seelostx.com | |
United States, Connecticut | |
Seelos Investigational Site | Not yet recruiting |
Farmington, Connecticut, United States, 06030 | |
Contact SLS002team@seelostx.com | |
United States, Florida | |
Seelos Investigational Site | Not yet recruiting |
Hollywood, Florida, United States, 33021 | |
Contact SLS002team@seelostx.com | |
Seelos Investigational Site | Recruiting |
Miami Lakes, Florida, United States, 33016 | |
Contact SLS002team@seelostx.com | |
Seelos Investigational Site | Active, not recruiting |
Miami, Florida, United States, 33144 | |
Seelos Investigational Site | Active, not recruiting |
Miramar, Florida, United States, 33025 | |
Seelos Investigational Site | Recruiting |
Oakland Park, Florida, United States, 33324 | |
Contact SLS002team@seelostx.com | |
United States, Georgia | |
Seelos Investigational Site | Not yet recruiting |
Atlanta, Georgia, United States, 30318 | |
Contact SLS002team@seelostx.com | |
Seelos Investigational Site | Recruiting |
Atlanta, Georgia, United States, 30331 | |
Contact SLS002team@seelostx.com | |
Seelos Investigational Site | Withdrawn |
Atlanta, Georgia, United States, 30338 | |
Seelos Investigational Site | Recruiting |
Decatur, Georgia, United States, 30030 | |
Contact SLS002team@seelostx.com | |
United States, Illinois | |
Seelos Investigational Site | Recruiting |
Springfield, Illinois, United States, 62781 | |
Contact SLS002team@seelostx.com | |
United States, Louisiana | |
Seelos Investigational Site | Not yet recruiting |
Alexandria, Louisiana, United States, 71303 | |
Contact SLS002team@seelostx.com | |
United States, Maryland | |
Seelos Investigational Site | Not yet recruiting |
Baltimore, Maryland, United States, 21287 | |
Contact SLS002team@seelostx.com | |
Seelos Investigational Site | Recruiting |
Gaithersburg, Maryland, United States, 20877 | |
Contact SLS002team@seelostx.com | |
United States, Mississippi | |
Seelos Investigational Site | Recruiting |
Flowood, Mississippi, United States, 39232 | |
Contact SLS002team@seelostx.com | |
United States, Missouri | |
Seelos Investigational Site | Not yet recruiting |
Saint Louis, Missouri, United States, 63128 | |
Contact SLS002team@seelostx.com | |
United States, New York | |
Seelos Investigational Site | Not yet recruiting |
Buffalo, New York, United States, 14215 | |
Contact SLS002team@seelostx.com | |
United States, Ohio | |
Seelos Investigational Site | Recruiting |
Cincinnati, Ohio, United States, 45219 | |
Contact SLS002team@seelostx.com | |
Seelos Investigational Site | Recruiting |
North Canton, Ohio, United States, 44720 | |
Contact SLS002team@seelostx.com | |
United States, Texas | |
Seelos Investigational Site | Recruiting |
DeSoto, Texas, United States, 75115 | |
Contact SLS002team@seelostx.com | |
Seelos Investigational Site | Not yet recruiting |
Houston, Texas, United States, 77054 | |
Contact SLS002team@seelostx.com | |
Seelos Investigational Site | Recruiting |
Richardson, Texas, United States, 75080 | |
Contact SLS002team@seelostx.com | |
Seelos Investigational Site | Active, not recruiting |
Richmond, Texas, United States, 77407 | |
United States, Utah | |
Seelos Investigational Site | Not yet recruiting |
Salt Lake City, Utah, United States, 84108 | |
Contact SLS002team@seelostx.com | |
Seelos Investigational Site | Withdrawn |
Springville, Utah, United States, 84663 | |
United States, West Virginia | |
Seelos Investigational Site | Not yet recruiting |
Morgantown, West Virginia, United States, 26505 | |
Contact SLS002team@seelostx.com | |
Seelos Investigational Site | Not yet recruiting |
Morgantown, West Virginia, United States, 84108 | |
Contact SLS002team@seelostx.com | |
United States, Wisconsin | |
Seelos Investigational Site | Not yet recruiting |
Madison, Wisconsin, United States, 53792 | |
Contact SLS002team@seelostx.com |
Responsible Party: | Seelos Therapeutics, Inc. |
ClinicalTrials.gov Identifier: | NCT04669665 |
Other Study ID Numbers: |
SLS-002-201 |
First Posted: | December 17, 2020 Key Record Dates |
Last Update Posted: | January 4, 2023 |
Last Verified: | December 2022 |
Individual Participant Data (IPD) Sharing Statement: | |
Plan to Share IPD: | Yes |
Plan Description: | Data sharing will be consistent with the results submission policy of ClinicalTrials.gov. |
Studies a U.S. FDA-regulated Drug Product: | Yes |
Studies a U.S. FDA-regulated Device Product: | Yes |
Device Product Not Approved or Cleared by U.S. FDA: | Yes |
Depression Depressive disorder SLS-002 Mental disorders Suicide Suicidal Ideation |
Mood disorders Behavioral symptoms Self-injurious behavior Ketamine Antidepressive agents Psychotropic drugs |
Disease Depressive Disorder Depression Depressive Disorder, Major Suicide Pathologic Processes Mood Disorders Mental Disorders Behavioral Symptoms Self-Injurious Behavior Ketamine Analgesics |
Sensory System Agents Peripheral Nervous System Agents Physiological Effects of Drugs Anesthetics, Dissociative Anesthetics, Intravenous Anesthetics, General Anesthetics Central Nervous System Depressants Excitatory Amino Acid Antagonists Excitatory Amino Acid Agents Neurotransmitter Agents Molecular Mechanisms of Pharmacological Action |