Primary Outcomes

Description: Blood pressure group: 1) Essential arterial hypotension, 2) normotension and 3) Essential arterial hypertension. Comorbidities: As describe in the protocol, as a summary: 1) cardiovascular, 2) metabolic, 3) Endocrine, 4) psychiatric disorders: depression and panic disorder, 5) orthostatic intolerance: neurally mediated syncope, vasovagal syncope, inappropriate sinus tachycardia, Postural orthostatic syndrome, carotid sinus hypersensitivity; 6) others: chronic fatigue syndrome, fibromyalgia, arthritis, autoimmune diseases, pulmonary thromboembolism, OSA (obstructive sleep apnea), Alzheimer disease, Parkinson disease, others dementias, epilepsia, nephropathies, and others. Cardiovascular mortality Total mortality

Measure: Relationship between Blood pressure group and comorbidities

Time: A 7-year prospective study

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Description: Adaptability group: Hyper adaptable, normal adaptability, hypo adaptable. Comorbidities: As describe in the protocol, as a summary: 1) cardiovascular, 2) metabolic, 3) Endocrine, 4) psychiatric disorders: depression and panic disorder, 5) orthostatic intolerance: neurally mediated syncope, vasovagal syncope, inappropriate sinus tachycardia, Postural orthostatic syndrome, carotid sinus hypersensitivity; 6) others: chronic fatigue syndrome, fibromyalgia, arthritis, autoimmune diseases, pulmonary thromboembolism, OSA (obstructive sleep apnea), Alzheimer disease, Parkinson disease, others dementias, epilepsia, nephropathies, and others. Cardiovascular mortality Total mortality

Measure: Relationship between adaptability group and comorbidities

Time: A 7-year prospective study

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Description: Blood pressure group: 1) Essential arterial hypotension, 2) normotension and 3) Essential arterial hypertension. Adaptability group: Hyper adaptable, normal adaptability, hypo adaptable. Comorbidities: As describe in the protocol, as a summary: 1) cardiovascular, 2) metabolic, 3) Endocrine, 4) psychiatric disorders: depression and panic disorder, 5) orthostatic intolerance: neurally mediated syncope, vasovagal syncope, inappropriate sinus tachycardia, Postural orthostatic syndrome, carotid sinus hypersensitivity; 6) others: chronic fatigue syndrome, fibromyalgia, arthritis, autoimmune diseases, pulmonary thromboembolism, OSA (obstructive sleep apnea), Alzheimer disease, Parkinson disease, others dementias, epilepsia, nephropathies, and others. Cardiovascular mortality Total mortality

Measure: Relationship between blood pressure group, adaptability group and comorbidities

Time: A 7-year prospective study

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Secondary Outcomes

Description: Blood pressure group: 1) Essential arterial hypotension, 2) normotension and 3) Essential arterial hypertension. Habits: smoke and drink Anthropometric variables: Body mass index, waist, hip Metabolic variables: Fasting glucose, 2 hs postprandial plasma glucose, insulin plasma levels, homoeostasis model assessment (HOMA), total cholesterol, LDL, HDL, triglycerides. Endocrine variables: plasma cortisol, free cortisol in 24 hs. urine, epinephrine, norepinephrine, metanephrines, vanilmandelic acid, ACTH, aldosterone, renin, thyrotropine, free thyroxine, triiodothyronine, testosterone Electrocardiogram: HR; PR interval, QRS complex, cQT interval Holter variables: HR, standard deviation of NN intervals (SDNN) and sympathovagal balance, at day, night and 24 hs. ABPM: Systolic, diastolic, and heart rate, at day, night and 24 hs., BP matinal surge.

Measure: Relationship between blood pressure group, habits and anthropometric, metabolic, endocrine, Electrocardiogram, Holter, ambulatory blood pressure monitoring (ABPM)

Time: A 7-year prospective study

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Description: Blood pressure group: 1) Essential arterial hypotension, 2) normotension and 3) Essential arterial hypertension. Adaptability group: Hyper adaptable, normal adaptability, hypo adaptable. Habits: smoke and drink Anthropometric variables: Body mass index, waist, hip Metabolic variables: Fasting glucose, 2 hs postprandial plasma glucose, insulin plasma levels, HOMA, total cholesterol, LDL, HDL, triglycerides. Endocrine variables: plasma cortisol, free cortisol in 24 hs. urine, epinephrine, norepinephrine, metanephrines, vanilmandelic acid, ACTH, aldosterone, renin, thyrotropine, free thyroxine, triiodothyronine, testosterone Electrocardiogram: PR interval, QRS complex, Heart rate, cQT interval Holter variables: HR, SDNN and sympathovagal balance, at day, night and 24 hs. ABPM: Systolic, diastolic, and heart rate, at day, night and 24 hs., BP matinal surge.

Measure: Relationship between blood pressure group, adaptability group, habits anthropometric, metabolic, endocrine, electrocardiographic, Holter, ambulatory arterial blood pressure monitoring.

Time: A 7-year prospective study

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Description: Blood pressure group: 1) Essential arterial hypotension, 2) normotension and 3) Essential arterial hypertension. Adaptability group: 1) Hyper adaptable, 2) normal adaptability and 3) hypo adaptable. Habits: smoke and drink, exercise Anthropometric variables: Body mass index, waist, hip Metabolic and other variables: Fasting glucose, 2 hs postprandial plasma glucose, insulin plasma levels, HOMA, total cholesterol, LDL, HDL, triglycerides; thyrotropine, Holter variables: HR, standard deviation of NN intervals (SDNN) and sympathovagal balance, at day, night and 24 hs. ABPM: Systolic, diastolic, and heart rate, at day, night and 24 hs., BP matinal surge.

Measure: For metabolic disorders what it matters the most: the anthropometric variables vs blood pressure group vs adaptability group

Time: A 7-year prospective study

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Description: Adaptability group: Hyper adaptable, normal adaptability, hypo adaptable. Habits: smoke and drink Anthropometric variables: Body mass index, waist, hip Metabolic variables: Fasting glucose, 2 hs postprandial plasma glucose, insulin plasma levels, HOMA, total cholesterol, LDL, HDL, triglycerides. Endocrine variables: plasma cortisol, free cortisol in 24 hs. urine, epinephrine, norepinephrine, metanephrines, vanilmandelic acid, ACTH, aldosterone, renin, thyrotropine, free thyroxine, triiodothyronine, testosterone Electrocardiogram: PR interval, QRS complex, Heart rate, cQT interval Holter variables: HR, SDNN and sympathovagal balance, at day, night and 24 hs. ABPM: Systolic, diastolic, and heart rate, at day, night and 24 hs., BP matinal surge.

Measure: Relationship between adaptability group, habits and anthropometric, metabolic, endocrine, Electrocardiogram, Holter, ambulatory blood pressure monitoring (ABPM)

Time: A 7-year prospective study

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Other Outcomes

Description: Clinical syncope characteristics (age of first syncope, number of syncope episodes, trauma, duration, clinical score, convulse, sphincter relaxation, etc.) Syncope cause Blood pressure group Adaptability group Prognosis

Measure: Syncope Registry

Time: Up 100 weeks

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Description: TTT protocol: describe the protocol, the time at positive response, nitroglycerine use, autonomic and hemodynamic variables. TTT outcome for syncope: positive or negative TTT other outcomes: 1) Chronotropic incompetence, 2) arterial orthostatic hypotension, 3) carotid hypersensitivity, 4) POTS, 5) IST The relationship between TTT results and Clinical score for syncope in regard to: syncope behaviour and other orthostatic intolerance entities, symptoms and comorbidities. The relationship between neurally mediated syncope response at the TTT and comorbidities.

Measure: Tilt table testing (TTT) registry

Time: Up to 100 weeks

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Description: EPS variables: AH, AV, CL, sino atrial conduction time (SACT), sinus node recovery time (SNRT), corrected sinus node recovery time (CSNRT), response to Isoproterenol, intrinsic heart rate Diagnosis: control, sick sinus syndrome, IST, chronotropic incompetence at the TTT HR at the ECG HR at the Holter monitoring HR at the TTT HRV at the Holter monitoring Syncope, cardiac or neurally mediated HR at the physical treadmill test Relationship with the blood pressure group Relationship with the adaptability group

Measure: Sinus node function at the electrophysiological study (EPS)

Time: Up to 100 weeks

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Description: Define how the blood pressure group and/or the adaptability group may add to the already known and include in this registry, in the diagnosis of cardiovascular complications as coronary artery disease, cerebrovascular disease, peripheral artery disease, nephropathy.

Measure: Score for coronary artery disease

Time: Up to 200 weeks

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Description: Blood pressure group: 1) Essential arterial hypotension, 2) normotension and 3) Essential arterial hypertension. Adaptability group: Hyper adaptable, normal adaptability, hypo adaptable. Comorbidities: As describe in the protocol, as a summary: 1) cardiovascular, 2) metabolic, 3) Endocrine, 4) psychiatric disorders: depression and panic disorder, 5) orthostatic intolerance: neurally mediated syncope, vasovagal syncope, inappropriate sinus tachycardia, Postural orthostatic syndrome, carotid sinus hypersensitivity; 6) others: chronic fatigue syndrome, fibromyalgia, arthritis, autoimmune diseases, pulmonary thromboembolism, OSA (obstructive sleep apnea), Alzheimer disease, Parkinson disease, others dementias, epilepsia, nephropathies, COPD, and others. Mortality

Measure: Neurally Mediated Syncope: further of the transient lost of consciousness (TLC)

Time: A 7-year prospective study

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Description: Blood pressure group: 1) Essential arterial hypotension, 2) normotension and 3) Essential arterial hypertension. Adaptability group: Hyper adaptable, normal adaptability, hypo adaptable. Psychiatric variables: Big Five Questionary (BFQ) for personality. Modify of the Coping Scale (Scale of modified coping strategies) Zung questionary for depression and anxiety MINI in those patients with moderate or severe depression and/or anxiety at the Zung questionary

Measure: Psychobiotype: relationship between biological and psychological variables

Time: Up to 100 weeks

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Description: High sodium intake in the diet is recognized as a risk factor for hypertension development. Essential hypotension population is advised to increase the sodium (at least 10 grams a day) and water intake (at least 2 liters a day), or as much as possible, several have taken Fludrocortisone (is not a exclusion criteria). Normal blood pressure population are advised to have a normal or low sodium intake. Physical exercise is recommended in both groups. This registry is a good opportunity to test how important sodium diet is to induce hypertension, or if by the contrary adaptability could prevail over high sodium intake in this registry. Blood pressure groups: essential hypotension and normotension and those with new essential hypertension. Adaptability groups. The results will be adjusted for age, gender and BMI.

Measure: The role of high sodium intake in the development of essential hypertension. Comparison between essential hypotension (high sodium intake) vs normotension population (normal or low sodium intake) in the follow-up.

Time: 4 years

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Description: Consistent bradycardia in the ECG at the office and normal HR in the holter monitoring or the contrary. There are patients with complaints that may be attributed to bradycardia, low blood pressure, hypothyroidism, or other entities. Some patients very often have bradycardia in the ECG taken in the office and normal HR in the 24 Holter monitoring, the opposite is also possible. Patients with bradycardia (without medication or physiological condition as exersice affecting heart rate) in at least 2 ECG (less 60 bpm) and at least 2 Holter monitoring will be analyzed, Other variables to consider are: Age, gender, blood pressure group, adaptability group, maximum HR in the treadmill test, white coat or masked hypertension, Tilt-Table-test result or syncope cause, Electrophysiological study if available. The acknowledge of this phenomenon could have clinical implications in the diagnosis of sick sinus syndrome and physiopathological ones.

Measure: White coat effect in the heart rate or masked bradycardia.

Time: 1 year

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Description: Bradycardia is the classical presentation form for sinus node dysfunction, mainly when associated with symptoms. Chronotropic incompetence is also a manifestation. Absence of medications with effects on the heart rate (HR) must be ruled out. Variables HR at the ECG, Holter monitoring, stress text, and at the physical examination previous to pacemaker implantation, Electrophysiological study (EPS): Basic cycle length, Sino-atrial conduction time, Sinus node recovery time, Corrected sinus node recovery time, Intrinsic HR when available 3. Pacemaker variables: HR at day and night or rest time Percentage of stimulation in A and V chambers 4. Syncope: Clinical characteriscs and clinical score Tilt table test results Trans Thoracic Echocardiogram in rest and or stress text Hypothesis: patients with ANSD will start to decrease the percentage atrial stimulation.

Measure: Reversible Bradycardia Mimicking Sinus Node Dysfunction as a Manifestation of Subacute Autonomic Nervous System Dysfunction (ANSD).

Time: 2 years

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Description: A non invasive, beat to beat BP monitoring, with the ability to measure BP, HR, Cardiac Output and Systemic Vascular Resistance (SVR) was started to use in the EHAR registry since May 2017. A description of this variables in the three BP groups will be collected in the data base (DB). This will allow to characterize whether SVR and/or CO maintain BP. Until now BP levels are related with prognosis. In the prognosis model SVR and CO will be add them to know what matter the most: BP levels, SVR and/or CO? In the EHAR registry a collection of the variables recognized as a risk factor for several comorbidities are available to adjust in multivariable analysis.

Measure: Description of the blood pressure hemodynamic profile at a medical office and their prognostic implications.

Time: Three years

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Primary Outcomes

Description: Pre- to post-CBT changes in functional, connectivity and structural MRI measures of brain networks relevant for anxiety. Brain regions include the amygdala, anterior insula, dorsal anterior cingulate cortex (dACC) and ventrolateral prefrontal cortex (vlPFC). Functional activation and connectivity of these brain regions are assessed using simple computer tasks performed during MRI scanning. Tasks engage threat reactivity, self-regulatory control and the interaction of these processes. Structural connections between regions will be measured using a MRI technique that measures water diffusion in the brain.

Measure: Brain function/structure as assessed by Magnetic Resonance Imaging scans

Time: Baseline and 12-weeks

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Secondary Outcomes

Description: The Pediatric Anxiety Rating Scale (PARS) is a clinician-administered assessment to rate the severity of anxiety symptoms associated with common DSM-V anxiety disorders (social phobia, separation anxiety disorder, and generalized anxiety disorder) in children. The investigators are looking for decreases in anxiety severity ratings from pre- to post-treatment.

Measure: Pediatric Anxiety Rating Scale

Time: weeks 0, 3, 6, 9, 12

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Primary Outcomes

Description: The CY-BOCS is a measure of obsessive compulsive symptoms and severity. The Obsession Rating Scale measures 5 domains of obsessional severity on a scale from 0 (no impairment) to 4 (extreme impairment.) The Compulsion Rating Scale measures 5 domains of compulsion severity on a scale from 0 (no impairment) to 5 (extreme impairment.) The total range of OCD severity is reported on a scale from 0-40, with a higher score indicating greater severity.

Measure: Children's Yale-Brown Obsessive-Compulsive Scale

Time: In-treatment and follow-up (6-12 months)

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Description: The PARS is a measure of anxiety symptoms and severity. The Anxiety Severity Items are 7 questions meant to assess the frequency of anxiety symptoms and associated impairment. Items are measured on a scale from 0 (none) to 5 (extreme).The total range of anxiety severity is reported on a scale from 0-35, with a higher score indicating greater severity.

Measure: Pediatric Anxiety Rating Scale

Time: In-treatment and follow-up (6-12 months)

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Secondary Outcomes

Description: The CSQ-8 measures consumer satisfaction with mental health services; satisfaction is measured using 8 items on a scale from 1 (Poor) to 4 (Excellent). Total satisfaction ranges from 8-32, with a high score indicating greater satisfaction.

Measure: Client Satisfaction Questionnaire-8

Time: In-treatment and follow-up (6-12 months)

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Description: The CGI is a clinician-rated measures of global severity and improvement. The Severity of illness scale reports the severity of current symptoms on a scale from 1 (not at all ill) to 7 (among the most extremely ill patients.) The Global Improvement Scale tracks improvement since treatment initiation on a scale from 1 (very much improved) to 7 (very much worse). The highest possible score on either scale is 7, indicating extreme severity or worse treatment outcome.

Measure: Clinical Global Impression Scales

Time: In-treatment and follow-up (6-12 months)

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Description: The CSDS measures the extent to which anxiety symptoms interfere with functioning. The Disability Scale measures the degree to which anxiety impacts school, social, and home life on a scale from 0 (Not at all) to 10 (very, very much.) Total anxiety-related impairment ranges from 0-30, with higher scores indicating greater impairment.

Measure: Child Sheehan Disability Scale

Time: In-treatment and follow-up (6-12 months)

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Description: The measure tracks both the quality and quantity of homework completed between treatment sessions. This form has been used previously by our research group in large-scale treatment trials, and has been helpful in determining barriers to homework completion.

Measure: Homework Compliance Form

Time: Up to 6 months

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Description: The Exposure Guide is a exposure therapy fidelity/quality tool completed by study therapists. This tool collects information regarding the use of specific therapeutic tools during exposures.

Measure: Exposure Guide

Time: Up to 6 months

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Description: The TASCP is a 12-item measure of therapeutic alliance between a caregiver and his/her child's therapist. This measure assesses the bond and collaboration between caregiver and therapist. Each item is rated using a scale from 0: "not true" to 4: "very much true."

Measure: Therapeutic Alliance Scales for Caregivers and Parents (TASCP)

Time: Up to 6 months

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Description: 75 The TASC-r is a 12-item measure of therapeutic alliance between a child and his/her therapist. This measure assesses the degree of affective bond between child and therapist, as well as amount of therapeutic task collaboration. Each item is rated using a scale from 0: "not true" to 4: "very much true."

Measure: Therapeutic Alliance Scales for Children-Revised (TASC-r)

Time: Up to 6 months

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Description: The PQ-LES-Q is a 13-item measure of child functioning in life that uses a 5-point ratings scale, with higher scores indicating better quality of life. This measure has both parent and child versions, assessing the same items from both child and parent perspectives. The measure assesses quality of the child's life in a variety of domains.

Measure: Pediatric Quality of Life Enjoyment and Satisfaction Questionnaire (PQ-LES-Q)

Time: In-treatment and follow-up (6-12 months)

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Description: The TPA is designed to independently solicit from youth and parent the top 3 problems they feel are most important to address in treatment. This is an idiographic measure of impairment that is driven by the individual needs and desires of the consumer. Respondents rate how much each problem bothers them from 0 ("not at all") to 10 (very, very much).

Measure: Top Problems Assessment (TPA)

Time: In-treatment and follow-up (6-12 months)

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Description: The CSQ assesses parent perceptions of the extent to which caring for a child with emotional problems affects several domains, including family life and relationships, demands on time, financial strain, disruption of social life, worry, guilt, and fatigue. This is a 21-item self-report measure that calls for parents to rate the extent of strain for each item using a 0 ("not at all") to 4 ("very much") scale.

Measure: Caregiver Strain Questionnaire (CSQ)

Time: In-treatment and follow-up (6-12 months)

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Description: The BTQ-P is a 28-item measure adapted from the BTQ to assess parent perceptions of barriers to accessing treatment for their child's anxiety. The measure is completed at the outset of treatment and assesses such domains as logistic and financial barriers, stigma, and aspects of treatment. Items are rated on a 0 ("not at all true") to 2 ("mostly true") scale.

Measure: Barriers to Treatment Questionnaire - Parent Version (BTQ-P)

Time: In-treatment and follow-up (6-12 months)

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Description: The PAS-PR is a 5-item questionnaire assessing the frequency and interference associated with accommodating the child's anxiety. Each item is followed by a series of common examples to illustrate the principle of accommodation for parents. Responses for frequency include 0 (never), 1 (rarely), 2 (occasionally), 3 (often), and 4 (always). Response options for interference due to accommodation include 0 (none), 1 (mild), 2 (moderate), 3 (severe), and 4 (extreme).

Measure: Pediatric Accommodation Scale-Parent Report (PAS-PR)

Time: In-treatment and follow-up (6-12 months)

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Description: We will record reactions from caregivers and child to treatment assignment using this clinician-rated measure. It includes capturing both verbatim responses from caregivers and child, as well as asking for interviewer impressions reactions from caregivers and child to treatment group assignment following randomization. The clinician also records the likelihood that the family will remain in the study and adhere to study protocols.

Measure: Randomization Debrief

Time: Administered at baseline

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Description: This measure is a 3-item self-report questionnaire that captures parental beliefs about the efficacy about each treatment condition (office-based or home/community-based) using a scale from 1:"I expect my child will be very much improved," to 7: "I expect my child will be very much worse." The parent is also asked to select which treatment option would be best for their family. There is also a patient version of this measure used to capture patient beliefs about the efficacy about each treatment condition (office-based or home/community-based) using the same scale. The patient is asked to select which treatment option they believe would be best for them and their family. The patient version of this measure will be completed by youth 12+.

Measure: Treatment Expectancy

Time: Administered at baseline

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Description: The SRS-2 is a 65-item self-report measure administered to caregivers or teachers to assess their perception of the presence of a child's social impairment. This measure is used to evaluate children aged 4-18 years old. Items are rated on a scale from 1 ("not true") to 4 ("almost always true").

Measure: The Social Responsiveness Scale, Second Edition (SRS-2)

Time: Administered at baseline and at discharge (up to 6-months)

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Description: The ARI-P is a 7-item parent report questionnaire assessing child's irritability. The items are each given a rating of: "not true," "somewhat true" or "certainly true".

Measure: Affective Reactivity Index - Parent Version (ARI-P)

Time: In-treatment and follow-up (6-12 months)

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Description: The ARI-S is a 7-item self-report report questionnaire assessing irritability. The items are each given a rating of: "not true," "somewhat true" or "certainly true".

Measure: Affective Reactivity Index - Self Report (ARI-S)

Time: In-treatment and follow-up (6-12 months)

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Description: The Distress Intolerance Index is a 10-item self-report report questionnaire assessing the inability to tolerate negative somatic and emotional states. Items are rated on a 5-point scale from "very little" (0) to "very much".

Measure: Distress Intolerance Index

Time: In-treatment and follow-up (6-12 months)

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Description: The PAS is a 12-item questionnaire assessing the frequency of and beliefs about parental accommodation. The frequency of parental accommodation is measured on a scale from "Never/Almost Never" (0), to "Always/Almost Always" (3). The beliefs about parental accommodation are measured on a scale from "Strongly Disagree" (0), to "Strongly Agree" (3).

Measure: Parent Accommodation Scale (PAS)

Time: In-treatment and follow-up (6-12 months)

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Description: The feedback form is a 3-item self-report questionnaire that asks caregivers or child which treatment group their family was in and for open-ended feedback about their experience in the study (i.e. what did they really like, what would they change, general suggestions/ comments). All responses on this survey are received anonymously. Caregivers and children complete separate feedback forms. Children 8+ will complete the child version of this measure.

Measure: Feedback Forms - Caregiver and Child Versions

Time: Administered only at discharge, up to 6-months into study

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Description: This form captures whether the patient ended treatment before or at 6 months, as well as the reasons for discontinuation (e.g., scheduling, transportation, financial, treatment fit, symptoms) that apply. This form also gathers information about whether referrals were provided to the family upon study discharge.

Measure: End of Treatment Form

Time: Administered only at discharge, up to 6-months into study

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Description: This 7-item measure asks for participants' caregivers to discuss to whom they would like the findings of the study to be disseminated (i.e., local policy makers, educators, etc.). Additionally, it asks for information on how they would like findings to be shared (i.e., via social media, presentations, etc.) as well as caregivers to share highlights of their experience in the study.

Measure: Sharing Study Findings

Time: Administered only at discharge, up to 6-months into study

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Description: We will record the rate of session reschedules, cancellations and no-shows, along with the overall number of sessions attended. We will also document the reason why a scheduled appointment does not occur using the Treatment Cancellation Form.

Measure: Treatment Attendance

Time: Up to 6 months

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Description: This is a case record form that documents any change in patient status (e.g., drop-out and premature termination) and the reasons for such changes.

Measure: Reasons for Treatment Discontinuation form

Time: Administered only at discharge, up to 6-months into study

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Primary Outcomes

Description: Change in Panic Symptom List -IV (PSL-IV), a questionnaire including 13 symptoms, each with intensity rating from 0 (not at all) to 4 (very intense), from pre-CO2 to Post CO2 challenge value

Measure: PSL-IV score

Time: up to Day 8

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Secondary Outcomes

Description: Change in Visual Analog Scale (VAS) value for fear, consisting of a horizontal line 100 mm in length with 0 corresponding to "no fear" and 100 corresponding to "the most fear possible", from pre-CO2 to Post CO2 challenge

Measure: VAS Fear score

Time: up to Day 8

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Description: Change from pre-CO2 to post-CO2 challenge values in Finapres NanoCore Physiological Measurements

Measure: CO2 challenge

Time: Screening, Day 1, Day 8

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Description: Treatment-emergent AEs

Measure: Treatment-emergent AEs

Time: From screening to Follow-up Visit

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Description: Suicidality assessed using Columbia - Suicide Severity Rating Scale (C-SSRS) with no/yes (0/1) to each interview question on the occurrence of suicide events or ideation.

Measure: Suicidality assessed using Columbia - Suicide Severity Rating Scale (C-SSRS)

Time: Screening, Day -1, Day 8

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Measure: CVL-865 (and alprazolam, if appropriate) concentrations

Time: Day 8

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Description: Psychodynamic effects of CVL-865 will be assessed by means of the NeuroCart test battery (including saccadic eye movements, adaptive tracking, body sway, Quantitative EEG)

Measure: Change From Baseline in NeuroCart test battery Score

Time: Screening, Day 1, Day 8

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Description: Visual Analogue Scale (VAS) is made up of 16 pairs of alternative descriptors of mood and attention at either end. The Bond-Lader of a 10 cm line. Participants will rate their feelings at the time of assessment by indicating the point on the line which best represent their mood. Each item is scored by measuring the position relative to the left hand end of the line and levels of anxiety, sedation, and dysphoria are then calculated from the combined scores of selected items. The score ranges from 0 to 100, with a high score reflecting a high level of anxiety, sedation or dysphoria.

Measure: Change from Baseline in Bond & Lader Visual Analogue Scale (VAS)

Time: Day 1, Day 8

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