Please select the eligibility criteria that correspond to the clinical trial below.
Title: A Double-blind, Randomized, Placebo-controlled Study to Evaluate the Efficacy and Safety of Intranasal Esketamine in Addition to Comprehensive Standard of Care for the Rapid Reduction of the Symptoms of Major Depressive Disorder, Including Suicidal Ideation, in Adult Subjects Assessed to be at Imminent Risk for Suicide
Brief Summary: 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.


Options:
A: Inclusion Criteria:

* At the time of signing the informed consent form (ICF), participant must be a man or woman 18 (or older if the minimum legal age of consent in the country in which the study is taking place is greater than \[\>\]18) to 64 years of age, inclusive
* At the start of the screening/prospective observational phase, participant must meet the Diagnostic and Statistical Manual of Mental Disorders (DSM-5) diagnostic criteria for single-episode major depressive disorder (MDD) (if single-episode MDD, the duration must be greater than or equal to \[\>=\] 2 years) or recurrent MDD, without psychotic features, based upon clinical assessment and confirmed by the Mini-International Neuropsychiatric Interview (MINI)
* At the start of the screening/prospective observational phase, participant must have an Inventory of Depressive Symptomatology-Clinician rated ( IDS-C30) total score of greater than or equal to (\>=) 34
* At the start of the screening/prospective observational phase, participant must have had non-response (greater than or equal to \[\<=25\] percent \[%\] improvement) to ≥1 but less than or equal to (\<=) 5 (if current episode is \>2 years, upper limit is applicable to only the last 2 years) oral antidepressant treatments in the current episode of depression, assessed using the Massachusetts General Hospital - Antidepressant Treatment Response Questionnaire (MGH-ATRQ) and documented by medical history and pharmacy/prescription records, for the current episode of depression. In addition, the participant is taking a different oral antidepressant treatment (on the MGH-ATRQ) for at least the previous 2 weeks at or above the minimum therapeutic dose
* The participant's current major depressive episode, depression symptom severity (Week 1 MADRS total score \>=28 required), and antidepressant treatment response in the current depressive episode, must be confirmed using a Site Independent Qualification Assessment

Exclusion Criteria:

* Participants who have previously demonstrated nonresponse of depressive symptoms to esketamine or ketamine in the current major depressive episode, to all 4 of the oral antidepressant treatment options available for the double-blind induction phase (ie, duloxetine, escitalopram, sertraline, and venlafaxine extended release \[XR\]) in the current major depressive episode (based on MGH-ATRQ), or an adequate course of treatment with electroconvulsive therapy (ECT) in the current major depressive episode, defined as at least 7 treatments with unilateral/bilateral ECT
* Participant has received vagal nerve stimulation (VNS) or has received deep brain stimulation (DBS) in the current episode of depression
* Participant has a current or prior DSM-5 diagnosis of a psychotic disorder or MDD with psychosis, bipolar or related disorders (confirmed by the MINI), comorbid obsessive compulsive disorder, intellectual disability (DSM-5 diagnostic codes 317, 318.0, 318.1, 318.2, 315.8, and 319), borderline personality disorder, antisocial personality disorder, histrionic personality disorder, or narcissistic personality disorder
* Participant has homicidal ideation/intent, per the investigator's clinical judgment, or has suicidal ideation with some intent to act within 6 months prior to the start of the screening/prospective observational phase, per the investigator's clinical judgment or based on the Columbia Suicide Severity Rating Scale (C-SSRS)
* Participants with history of moderate or severe substance or alcohol use disorder according to DSM-5 criteria
B: Inclusion Criteria:

* DSM-IV diagnosis of major depression .
* HAMD scale score of ≥20 despite at least two adequate antidepressant treatment trials during the current episode.

Exclusion Criteria:

* Underwent ECT treatment during the 3 months preceding the study.
* Change in psychotropic medications doses during the 3 weeks preceding the study.
* Concurrent unstable medical or neurological illness.
* Patients are judged to be potentially violent towards themselves or others, or have a history of drug/alcohol abuse.
C: Inclusion Criteria:

* Participant must meet Diagnostic and Statistical Manual of Mental Disorders (5th edition) (DSM-5) diagnostic criteria for Major Depressive Disorder (MDD), without psychotic features, based upon clinical assessment and confirmed by the Mini International Psychiatric Interview (MINI)
* In the physician's opinion, acute psychiatric hospitalization is clinically warranted due to participant's imminent risk of suicide
* Participants must have current suicidal ideation with intent, confirmed by a "Yes" response to Question B3 \[Think (even momentarily) about harming or of hurting or of injuring yourself: with at least some intent or awareness that you might die as a result; or think about suicide (ie, about killing yourself)?\] and Question B10 \[Intend to act on thoughts of killing yourself?\] obtained from the MINI. Note: the response to B3 must refer to the present, whereas the response to B10 may reflect the past 24 hours. If the screening period is longer than 24 hours, assessment of B3 and B10 of MINI must be repeated prior to randomization to confirm eligibility
* Participant has a Montgomery Asberg Depression Rating Scale (MADRS) total score of greater than (\>) 28 predose on Day 1
* As part of standard of care treatment, participant agrees to be hospitalized voluntarily for a recommended period of 5 days after randomization (may be shorter or longer if clinically warranted in the investigator's opinion) and take prescribed non-investigational antidepressant therapy(ies) for at least the duration of the double-blind treatment phase (Day 25)
* Participant is comfortable with self-administration of intranasal medication and able to follow instructions provided

Exclusion Criteria:

* Participant has a current DSM-5 diagnosis of bipolar (or related disorders), antisocial personality disorder, or obsessive compulsive disorder
* Participant currently meets DSM-5 criteria for borderline personality disorder. Participant not meeting full DSM-5 criteria for borderline personality disorder but exhibiting recurrent suicidal gestures, threats, or self-mutilating behaviors should also be excluded
* Participant has a current clinical diagnosis of autism, dementia, or intellectual disability
* Participant has a current or prior DSM-5 diagnosis of a psychotic disorder, or MDD with psychotic features
* Participant meets the DSM-5 severity criteria for moderate or severe substance or alcohol use disorder, (except for nicotine or caffeine), within the 6 months before screening. A history (lifetime) of ketamine, phencyclidine (PCP), lysergic acid diethylamide (LSD), or 3, 4-methylenedioxy-methamphetamine (MDMA) hallucinogen-related use disorder is exclusionary
D: Inclusion Criteria:

1. Gender: female or male,
2. Age: 18 - 65 years old, inclusive, on the day of Screening,
3. Participant must meet Diagnostic and Statistical Manual of Mental Disorders, fifth edition (DSM-5) diagnostic criteria for depressive episode in Bipolar Disorder (BD) type I or II, without psychotic features, confirmed by the Mini International Neuropsychiatric Interview (MINI),
4. Participant must have in Montgomery-Asberg Depression Rating Scale (MADRS) total score of \>= 24 at Screening and predose on Day 1,
5. Participant is treatment resistant in the current episode of depression, defined as having an inadequate response to at least 2 adequate mood stabilizing treatment regimens administered for the sufficient duration and dose and administered in the current episode of depression,
6. Participant in the last mood stabilizing treatment regimen is to be administered at least one of the medication listed in the protocol,
7. Participant's last mood stabilizing treatment regimen is to be without antidepressant drugs from the class: SSRI, SNRI, TCA, MAOI or NaSSA,
8. Participant must be on stable mood stabilizing treatment regimen (listed in the protocol), remain non-responsive to it and continue the treatment from Screening to at least the duration of the double-blind treatment phase,
9. Participant's other drugs taken as a standard treatment for bipolar disorder, but not for depressive episode treatment, are to be allowed and may be continued through the study and it's administration is up to Investigator discretion,
10. Participant agrees to be hospitalized voluntarily for a period of 12 h before first administration and until the end of treatment phase on Day 14,
11. Participant must be medically stable on the basis of clinical laboratory tests, physical examination, vital signs, 12-lead ECG,
12. Participant agrees to blood sample collection for DNA analysis,
13. Participant of childbearing potential willing to use acceptable forms of contraception.

Exclusion Criteria:

1. Participant has a current DSM-5 diagnosis, according to MINI, of any other than BD disorder,
2. Participant has a BD with a rapid-cycling course (≥ 4 episodes per year),
3. Participant has in Young Mania Rating Scale (YMRS) total score of greater than 12 at Screening and every other assessment,
4. Participant has suicidal ideation in MADRS 'suicidal thoughts' subscale score greater or equal to 2 and/or in C-SSRS score greater or equal to 4 at Screening and/or has a history of suicidal thoughts within 6 months prior to Screening and/or history of suicidal attempt within 1 year prior to Screening,
5. Participant has a history or current signs and symptoms of chronic obstructive pulmonary disease (COPD), asthma, liver or renal insufficiency, significant cardiac, vascular, pulmonary, gastrointestinal, endocrine, hematologic, neurologic, rheumatologic or metabolic disturbances that are uncontrolled with medication change during last three months before Screening and/or that could influence the present general health condition at the Investigator's discretion,
6. Participant has uncontrolled hypertension,
7. Upper respiratory tract and/or chest infection and/or inflammation within 2 weeks preceding the first administration and during the treatment phase,
8. Participant took part in other clinical trial within 90 days preceding the Screening,
9. Known allergy or hypersensitivity, intolerance or contraindication to Esketamine/ketamine or its derivatives and/or to any study product excipients,
10. Blood drawn within 30 days prior to inclusion to the study,
11. History of drug, alcohol, chemical, sedatives or sleeping medications abuse or dependence (except nicotine or caffeine) within 2 years prior to Screening,
12. Lifetime abuse or dependence on ketamine or phencyclidine,
13. Positive results from pregnancy test for female participants,
14. Lactation in female participants,
15. Positive drug screen (except benzodiazepines evaluation during follow-up) or alcohol breath test.

Answer: C