Ketamine

Ketamine-Assisted Psychotherapy (KAP) is a relatively new approach for the treatment of mental health issues, which involves the combination of ketamine, a dissociative anaesthetic with psychedelic properties, and psychotherapy to promote emotional wellbeing. In this study, we investigated the effectiveness of KAP in adult patients coping with mental health. We predicted that clients would experience lasting reductions in psychological distress over time, such as depression, anxiety, and post traumatic stress, that would be detectable up to 6 months after treatment. The results of this study may provide evidence of sustained real-world effects of Ketamine-Assisted Psychotherapy, of interest to patients, clinicians, researchers, and policymakers.

The purpose of this study is to assess the safety and tolerability of esketamine nasal spray in participants with treatment-resistant depression (TRD).

The purpose of this open-label, multicenter study is to assess the long term safety and efficacy of intranasal esketamine plus an oral antidepressant in participants with treatment-resistant depression (TRD).

The purpose of this study is to assess the efficacy of intranasal esketamine plus an oral antidepressant compared with an oral antidepressant (active comparator) plus intranasal placebo in delaying relapse of depressive symptoms in participants with treatment-resistant depression (TRD) who are in stable remission after an induction and optimization course of intranasal esketamine plus an oral antidepressant.

The primary purpose of this study is to evaluate the efficacy of flexibly dosed esketamine nasal spray compared with quetiapine extended-release (XR), both in combination with a continuing selective serotonin reuptake inhibitor/serotonin-norepinephrine reuptake inhibitor (SSRI/SNRI), in achieving remission in participants who have treatment-resistant major depressive disorder (MDD) with a current moderate to severe depressive episode.

The purpose of this study is to evaluate the efficacy of each individual dose of esketamine nasal spray, 56 milligram (mg) and 84 mg, compared with placebo nasal spray in improving depressive symptoms in participants with treatment resistant depression (TRD), as assessed by the change from baseline in the Montgomery-Asberg Depression Rating Scale (MADRS) total score from Day 1 (prerandomization) to the end of the 4 week double-blind treatment phase (Day 28).

The goal of the study is to conduct a comparative randomized trial of electroconvulsive therapy (ECT) vs. ketamine for patients with treatment resistant depression (TRD) in a real world setting with patient reported outcomes as primary and secondary outcome measures.

The purpose of this study is to compare the efficacy and safety of switching treatment-resistant depression (TRD) participants from a prior antidepressant treatment (to which they have not responded) to either intranasal esketamine plus a new oral antidepressant or switching to a new oral antidepressant plus intranasal placebo.

The purpose of this study is to evaluate the efficacy of switching adult participants with treatment-resistant depression (TRD) from a prior antidepressant treatment (to which they have not responded) to flexibly dosed intranasal esketamine (56 milligram \[mg\] or 84 mg) plus a newly initiated oral antidepressant compared with switching to a newly initiated oral antidepressant (active comparator) plus intranasal placebo, in improving depressive symptoms. Efficacy will be assessed by the change from baseline in the Montgomery Asberg Depression Rating Scale (MADRS) total score from Day 1 (before randomization) to the end of the 4-week double-blind treatment phase.

The purpose of this study is to examine whether neural-derived exosomal miRNAs are differentially expressed that are specific to suicidal ideation or behavior, and which by affecting specific miRNA targets and pathways, are associated with suicidal behavior and response to ketamine. The following groups of subjects will be examined: 1) major depressive disorder (MDD) with a recent suicide attempt (in past 2 weeks), 2) MDD with serious ideation (in the past 7 days) without recent suicide attempt (in the past 6 months), 3) MDD without clinically significant suicidal ideation (in the past 7 days) or recent suicide attempt (in the past 6 months), and 4) healthy controls. Both suicidal and non-suicidal MDD will be given ketamine (0.5 mg/kg, IV) and blood will be drawn at predose, 30 min, 180 min, 24 hours, and 14 days post-infusion to measure changes in miRNAs. As of May 2022, study is in data analysis. Final outcomes will be known once analysis is complete. As of July 2022, all data collection is complete. The primary and secondary data outcome measure results are complete. The investigators are working on final analysis of the mRNA samples, to provide final responses to questions posed in the Detailed Description section below and listed here: 1) whether suicidal ideation or behavior is associated with differences in the expression of specific miRNAs, 2) whether anti-suicidal/antidepressant effects of ketamine is associated with miRNAs changes, and 3) whether miRNA/mRNA-regulatory pathways contribute to suicide pathogenesis and treatment response.

The purpose of this study is to compare the efficacy and safety of switching treatment-resistant depression (TRD) subjects from a prior antidepressant treatment (to which they have not responded) to either intranasal esketamine plus a new oral antidepressant or switching to a new oral antidepressant plus intranasal placebo.

The purpose of this study is to evaluate the efficacy of intranasal esketamine 84 milligram (mg) compared with intranasal placebo in addition to comprehensive standard of care in reducing the symptoms of Major Depressive Disorder (MDD), including suicidal ideation, in participants who are assessed to be at imminent risk for suicide, as measured by the change from baseline on the Montgomery-Asberg Depression Rating Scale (MADRS) total score at 24 hours post first dose.

The purpose of the study is to evaluate the efficacy of intranasal esketamine 84 milligram (mg) compared with intranasal placebo in addition to comprehensive standard of care in reducing the symptoms of Major Depressive Disorder (MDD), including suicidal ideation, in participants who are assessed to be at imminent risk for suicide, as measured by the change from baseline on the Montgomery-Asberg Depression Rating Scale (MADRS) total score at 24 hours post first dose.

The purpose of this study is to evaluate the efficacy of fixed dosed intranasal esketamine compared to intranasal placebo, as an add-on to an oral antidepressant in Japanese participants with treatment-resistant depression (TRD), in improving depressive symptoms.

The primary purpose of this study is to assess the long-term safety and tolerability of esketamine nasal spray in combination with a selective serotonin reuptake inhibitor/serotonin-norepinephrine reuptake inhibitor (SSRI/SNRI) in participants who have completed 32 weeks of esketamine nasal spray treatment in Study 54135419TRD3013 (NCT04338321).