Please select the eligibility criteria that correspond to the clinical trial below.
Title: A Randomized, Double-Blind, Placebo-Controlled Single Intravenous Dose, Ascending Dose Level Study of the Safety, Tolerability and Pharmacokinetics of GLYX-13 in Normal Healthy Volunteers
Brief Summary: The purpose of this study is to evaluate the safety, tolerability and pharmacokinetics of a single IV dose of GLYX-13, an N-Methyl-D-aspartate (NMDA) receptor glycine site functional partial agonist, in normal, healthy human volunteers.


Options:
A: Inclusion Criteria:

--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

Exclusion Criteria:

-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
B: Inclusion Criteria:

* clinical laboratory values \< 2x the upper limit of normal
* ability to understand the requirements of the study and provide informed consent

Exclusion Criteria:

* alcohol abuse
* abuse of illicit substances
* current smoker
* currently taking prescription medications (other than for birth control)
* history of allergy to NMDA receptor ligands
* received another investigational drug within 30 days
* psychiatric disease
C: Inclusion Criteria:

* Female who is non-pregnant, nonlactating, using an acceptable method of birth control, or is not of child-bearing potential;
* be diagnosed with current major depressive disorder either mild or severe, as evidenced by a score of at least 9 but not more than 20 on the Quick Inventory of Depression Symptomatology - Clinician Rated (QIDS-C);
* be anti-depressant naïve;
* be able to refrain from all use of grapefruit containing products from the time of admission until the last assessment is performed at discharge;
* smokes less than or equal to 10 cigarettes or equivalent daily.

Exclusion Criteria:

* has any current and primary Axis I disorder other than major depressive disorder;
* has any history of bipolar I or II disorder, dysthymia, psychotic depression, psychotic disorders, posttraumatic stress disorder, borderline personality disorder, obsessive compulsive disorder, or eating disorder;
* the duration of the current depressive episode is longer than 2 years at screening;
* has any history of a significant suicide attempt, or poses a current risk of attempting suicide;
* is known to be human immunodeficiency virus (HIV) positive, or positive for hepatitis B surface antigen or hepatitis A antibodies or hepatitis C total antibodies;
* has any clinically significant concurrent endocrine, renal, respiratory, cardiovascular, hematological, immunological, cerebrovascular, neurological, malignancy, or any other concurrent medical condition, or has any history of diabetes mellitus;
* donation of blood within 60 days prior to the anticipated first dose of trial medication.
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