Please select the eligibility criteria that correspond to the clinical trial below.
Title: A Double-Blind, Double-Randomization, Placebo-Controlled Study of the Efficacy of Intravenous Esketamine in Adult Subjects With Treatment-Resistant Depression
Brief Summary: The purpose of this study is to assess the efficacy of esketamine compared with placebo in improving symptoms of depression in patients with treatment resistant depression.


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, participants must have had non-response (less 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 taken at adequate dosage and for adequate duration, as 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.

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 (i.e, 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 psychotic features bipolar or related disorders (confirmed by the MINI), obsessive compulsive disorder (current only), intellectual disability (DSM-5 diagnostic codes 317, 318.0, 318.1, 318.2, 315.8, and 319), autism spectrum disorder, 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:

* Be medically stable on the basis of clinical laboratory tests
* Diagnostic for major depressive disorder (MDD) without psychotic features
* Have an inadequate response to at least 1 antidepressant in the current episode of depression and at least one other inadequate treatment response to an antidepressant either in the current episode or in a previous episode
* Women must be not pregnant; women must be postmenopausal, surgically sterile or, if heterosexually active, practicing a highly effective method of birth control during the study and for 3 months after receiving the last dose of study drug
* Men must agree to use a double barrier method of birth control and to not donate sperm during the study and for 3 months after receiving the last dose of study drug
* Signed informed consent document

Exclusion Criteria:

* History of, or current signs and symptoms of diseases or conditions that would make participation not be in the best interest (eg, compromise the well-being) of the patient or that could prevent, limit, or confound the protocol-specified assessments
* Has uncontrolled hypertension (systolic blood pressure (SBP)\> 160 mmHg or diastolic blood pressure (DBP)\> 90 mmHg despite diet, exercise or a stable dose of an allowed anti-hypertensive treatment) or any past history of hypertensive crisis
* Has known human immunodeficiency virus (HIV), hepatitis B, or hepatitis C infection, or have positive results at screening
* Has a primary diagnosis of current (active) generalized anxiety disorder, panic disorder, obsessive compulsive disorder, posttraumatic stress disorder, anorexia nervosa, or bulimia nervosa
* Has a history or current diagnosis of a psychotic disorder, bipolar disorder, mental retardation, or borderline personality disorders, mood disorder with postpartum onset, somatoform disorders or chronic fatigue syndrome
* Has had major surgery, (eg, requiring general or local anesthesia) within 4 weeks before screening, or will not have fully recovered from surgery, or planned surgery during the time the subject is expected to participate in the study
C: Inclusion Criteria:

* between the ages of 18 and 65 years old
* diagnosed with depression and being referred for ECT
* American Society of Anesthesiologists (ASA) score of 1 or 2
* patient receiving ECT on an informal basis (i.e. consenting to treatment and able to give informed consent)

Exclusion Criteria:

* pre-existing neurological disease or cognitive impairment
* co-morbid psychiatric diagnoses
* pre-existing hypertension
* severe respiratory tract disease
* major cardiovascular disease
* pacemakers
* cerebrovascular disorder or malformation
* intracranial mass lesions
* seizure disorder
* intracranial electrode or clips
* intra-ocular pathology
* endocrine or metabolic disease
* severe hematologic disease
* severe fracture
* not able to give consent
* pregnancy
D: Inclusion Criteria:

* Signed informed consent before any study-related procedures start.
* The patient is previously diagnosed with Major Depressive Disorder (MDD) and currently taking an antidepressant for at least 6 weeks.
* Patient has a history of poor response to 1 or more antidepressants (in addition to the antidepressant the patient is taking at enrollment) after exposure at adequate doses or maximum tolerated doses for ≥4 weeks.

Exclusion Criteria:

* Patient has a lifetime history of schizophrenia, bipolar, psychosis or psychotic depression.
* Patient has a lifetime history of failure to ECT therapy.
* Patient is pregnant or breast feeding.
* Length of current episode of depression exceeds ≥2 years.

Answer: B