DepressionPhase 1NCT04205890

Intravenous Ketamine Effects on Functional Neuroanatomy

A Phase 1 study testing Ketamine in people with Depression, run by Neurological Associates of West Los Angeles at 1 site in United States.

Withdrawn

Withdrawn. The study stopped before anyone enrolled.

Official record

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Trial summary

Who is it for?: Ages 18 to 70 yearsHealthy volunteers can take part
Conditions the study is for: Depression
What is being tested?: Ketamine
Could I receive a placebo?: No, everyone receives an active treatment
How many people: 0 participants
Where: 1 siteUnited States
Study dates: 2 May 2020to 28 May 2020
Phase: Phase 1
Are there results?: None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

Ages 18 to 70 years
All sexes
Healthy volunteers accepted
Adult, Older adult

Who may be able to join

In order for a subject to be considered for this study, the patient must have been diagnosed with treatment-resistant depression, meaning the patient failed three medications and has been suffering from moderate treatment-resistant depression for over 6 months, indicated by a Beck Depression Inventory score of 10 or above. The patient must have been prescribed ketamine as part of their treatment plan, completely independent of any research. The patient must be willing to comply with the study protocol.

Who cannot join

In order for a subject to be considered for this study, he/she may not have any of the following:
Advanced stages of any terminal illness or any active cancer that requires chemotherapy
Hepatic impairment
Significant cytopenia
Cardiovascular, cerebrovascular, and peripheral vascular arterial thrombosis
Women who are pregnant, may become pregnant, or are breastfeeding
Any counter indications to ketamine
Subjects unable to give informed consent or in vulnerable categories, such as prisoners

Trial locations and contacts

1 site in 1 country.

United States1 site

Neurological Associates of West Los Angeles
Santa Monica, California, 90403

Other trials in United States

About this study

The purpose of this study is to investigate the neuroanatomical effects of ketamine treatment on patients with treatment-resistant depression. The investigators will compare the neuroimaging of patients several days before and after injection in order to assess the more durable changes induced by ketamine. In addition, changes in perfusion will be analyzed, in addition to changes in neurovascular coupling, and functional connectivity that are correlated with psychiatric measures.

Read the detailed description

The present study is designed as a prospective data analysis of patient response to the use of ketamine to treat treatment-resistant depression. For Phase I trail, 10 patients of any gender with an age range of 18 to 70 who have undergone the outlined procedure will be recruited for inclusion. Patients will be examined by the principle investigator. All patients must be diagnosed with persistent treatment-resistant depression and prescribed ketamine. Patients will be accepted regardless of if the depression coincided with anxiety and/or pain. Patient status will be assessed using the Beck Depression Inventory, Beck Anxiety Inventory, and Brief Pain Inventory. Patients must have a Beck Depression Inventory score of 10 or above. These scores will be used as baseline data. Patients will be offered the option of participating in the study and provided informed consent for neuroimaging before and after the ketamine treatment.

A week before the scheduled ketamine treatment, the patients will have fMRI scans, including structural T1, Arterial Spin Labeling, and Resting BOLD. The scans take around 30 minutes at no charge to the patients. The ketamine will be injected per the doctor's orders to achieve a dissociative state; dosages varies between 75mg - 1000mg depending on every individual's unique treatment plan. The same scans will be taken two days after treatment.

Conditions: Depression
Being tested: Ketamine
Keywords: intravenous ketamine, treatment-resistant depression
Medical subject headings: Depression, Depressive Disorder, Treatment-Resistant

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

KetamineDrug
The ketamine will be injected per the doctor's orders to achieve a dissociative state; dosage varies between 75mg - 1000mg depending on every individual's unique treatment plan.

Study groups in NCT04205890
Study group	Role	What they receive
Ketamine	Experimental	The present study is designed as a prospective data analysis of patient response to the use of ketamine to treat treatment-resistant depression. For Phase I trail, 10 patients of any gender with an age range of 18 to 70 who have undergone the outlined procedure will be recruited for inclusion. A week before the scheduled ketamine treatment, the patients will have fMRI scans, including structural T1, Arterial Spin Labeling, and Resting BOLD. The scans take around 30 minutes at no charge to the patients. The ketamine will be injected per the doctor's orders to achieve a dissociative state; dosage will vary (see below) depending on every individual's unique treatment plan. The same scans will be taken two days after treatment. Receives: Drug: Ketamine

What is being measured

The primary outcome is the main question the study is designed to answer.

fMRI T1 baseline
T1-data was collected as a sagittal MPRAGE sequence. T1 images are corrected for field biasing and then skull stripped and linearly registered to standard MNI space. Each patients' T1 image is segmented into 100 cortical and 15 subcortical areas using the Harvard-Oxford Cortical and Subcortical structural atlas. Mean volume is computed for each of these regions for each patient, which can be used for quantitative comparison.
Measured: Images to be acquired 7 days prior to Ketamine intervention
fMRI T1 post-intervention comparison
T1-data was collected as a sagittal MPRAGE sequence. T1 images are corrected for field biasing and then skull stripped and linearly registered to standard MNI space. Each patients' T1 image is segmented into 100 cortical and 15 subcortical areas using the Harvard-Oxford Cortical and Subcortical structural atlas. Mean volume is computed for each of these regions for each patient, which can be used for quantitative comparison.
Measured: Images to be acquired at 2 days post-treatment
Arterial Spin Labeling (fMRI) baseline
Pulsed Arterial Spin Labeling is collected as an echo planar sequence. ASL data is superimposed over the acquired T1-weighted brain image demonstrating a map of cerebral perfusion. Quantification to CBF values (milliliters of blood per 100g of tissue per minute) is implemented and voxel-based comparisons showing perfusion values relative to the acquired data range are used for quantification.
Measured: Images to be acquired 7 days prior to Ketamine intervention
Arterial Spin Labeling (fMRI) post-intervention comparison
Pulsed Arterial Spin Labeling is collected as an echo planar sequence. ASL data is superimposed over the acquired T1-weighted brain image demonstrating a map of cerebral perfusion. Quantification to CBF values (milliliters of blood per 100g of tissue per minute) is implemented and voxel-based comparisons showing perfusion values relative to the acquired data range are used for quantification.
Measured: Images to be acquired at 2 days post-treatment
fMRI Resting Bold baseline
The signal change measured in BOLD imaging comes from the brain oversupplying the region of activation with oxygen, leading to a focal decrease in deoxygenated hemoglobin. Processed BOLD imaging allows for visualization of hemodynamic response (HR) and neurovascular coupling (NVC) based on signal variability and distribution. These elements can be quantified and used for comparison.
Measured: Images to be acquired 7 days prior to Ketamine intervention
fMRI Resting Bold post-intervention comparison
The signal change measured in BOLD imaging comes from the brain oversupplying the region of activation with oxygen, leading to a focal decrease in deoxygenated hemoglobin. Processed BOLD imaging allows for visualization of hemodynamic response (HR) and neurovascular coupling (NVC) based on signal variability and distribution. These elements can be quantified and used for comparison.
Measured: Images to be acquired at 2 days post-treatment

Secondary outcomes (9)

Beck Depression Inventory
The BDI-II is a 21-question multiple-choice self-report inventory. Each question involves four possible responses, ranging in intensity from "0" (this item does not apply) to "3" (this item applies severely). The test is scored as the sum of all of the response values; this number is used to determine the severity of depressive symptoms. A score of 0 to 3 is possible for each question with a maximum total score of 63 points. The standard cutoff scores are as follows: 0-13 total points = minimal depression; 14-19 total points = mild depression; 20-28 total points = moderate depression; and 29-63 total points = severe depression. A reduction in the total score by at least 30% is considered to be clinically significant.
Measured: 7 days prior to treatment
Beck Depression Inventory
The BDI-II is a 21-question multiple-choice self-report inventory. Each question involves four possible responses, ranging in intensity from "0" (this item does not apply) to "3" (this item applies severely). The test is scored as the sum of all of the response values; this number is used to determine the severity of depressive symptoms. A score of 0 to 3 is possible for each question with a maximum total score of 63 points. The standard cutoff scores are as follows: 0-13 total points = minimal depression; 14-19 total points = mild depression; 20-28 total points = moderate depression; and 29-63 total points = severe depression. A reduction in the total score by at least 30% is considered to be clinically significant.
Measured: Day of treatment
Beck Depression Inventory
The BDI-II is a 21-question multiple-choice self-report inventory. Each question involves four possible responses, ranging in intensity from "0" (this item does not apply) to "3" (this item applies severely). The test is scored as the sum of all of the response values; this number is used to determine the severity of depressive symptoms. A score of 0 to 3 is possible for each question with a maximum total score of 63 points. The standard cutoff scores are as follows: 0-13 total points = minimal depression; 14-19 total points = mild depression; 20-28 total points = moderate depression; and 29-63 total points = severe depression. A reduction in the total score by at least 30% is considered to be clinically significant.
Measured: 2 days after treatment
Beck Anxiety Inventory
The BAI is a 21-question multiple-choice self-report inventory that is used for measuring the severity of anxiety symptoms. Each of the 21 items asks whether the patient has experienced various anxiety symptoms in the last two weeks, and if so, how severely. Each question/answer is scored on a scale value of "0" (not at all) to "3" (severely). Higher total scores indicate more severe anxiety symptoms. The maximum total score possible is 63 points. The standard cutoff scores are: 0-7 = minimal anxiety; 8-15 = mild anxiety; 16-25 = moderate anxiety; 26-63 = severe anxiety. A reduction in score by at least 30% is considered clinically meaningful.
Measured: 7 days prior to treatment
Beck Anxiety Inventory
The BAI is a 21-question multiple-choice self-report inventory that is used for measuring the severity of anxiety symptoms. Each of the 21 items asks whether the patient has experienced various anxiety symptoms in the last two weeks, and if so, how severely. Each question/answer is scored on a scale value of "0" (not at all) to "3" (severely). Higher total scores indicate more severe anxiety symptoms. The maximum total score possible is 63 points. The standard cutoff scores are: 0-7 = minimal anxiety; 8-15 = mild anxiety; 16-25 = moderate anxiety; 26-63 = severe anxiety. A reduction in score by at least 30% is considered clinically meaningful.
Measured: Day of treatment
Beck Anxiety Inventory
The BAI is a 21-question multiple-choice self-report inventory that is used for measuring the severity of anxiety symptoms. Each of the 21 items asks whether the patient has experienced various anxiety symptoms in the last two weeks, and if so, how severely. Each question/answer is scored on a scale value of "0" (not at all) to "3" (severely). Higher total scores indicate more severe anxiety symptoms. The maximum total score possible is 63 points. The standard cutoff scores are: 0-7 = minimal anxiety; 8-15 = mild anxiety; 16-25 = moderate anxiety; 26-63 = severe anxiety. A reduction in score by at least 30% is considered clinically meaningful.
Measured: 2 days after treatment
Brief Pain Inventory
Self-report measure containing a composite pain score and functional interference score. The pain subscale contains 4 questions, each with answers ranging from 0 'no pain' to 10 'pain as bad as you can imagine.' Total possible score for the pain subscale is 40 points. The functional/interference subscale contains 7 questions, with each answer ranging from 0 'does not interfere' to 10 'completely interferes.' The maximum possible score for the interference subscale is 70 points. The total overall composite BPI score is out of 100 maximum points. A clinical improvement is considered a decrease in BPI overall composite score by at least 30% from baseline.
Measured: 7 days prior to treatment
Brief Pain Inventory
Self-report measure containing a composite pain score and functional interference score. The pain subscale contains 4 questions, each with answers ranging from 0 'no pain' to 10 'pain as bad as you can imagine.' Total possible score for the pain subscale is 40 points. The functional/interference subscale contains 7 questions, with each answer ranging from 0 'does not interfere' to 10 'completely interferes.' The maximum possible score for the interference subscale is 70 points. The total overall composite BPI score is out of 100 maximum points. A clinical improvement is considered a decrease in BPI overall composite score by at least 30% from baseline.
Measured: Day of Treatment
Brief Pain Inventory
Self-report measure containing a composite pain score and functional interference score. The pain subscale contains 4 questions, each with answers ranging from 0 'no pain' to 10 'pain as bad as you can imagine.' Total possible score for the pain subscale is 40 points. The functional/interference subscale contains 7 questions, with each answer ranging from 0 'does not interfere' to 10 'completely interferes.' The maximum possible score for the interference subscale is 70 points. The total overall composite BPI score is out of 100 maximum points. A clinical improvement is considered a decrease in BPI overall composite score by at least 30% from baseline.
Measured: 2 days post-treatment

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

2 May 202028 May 2020

First posted20 Dec 2019
Study start2 May 2020
Primary completion28 May 2020
Study completion28 May 2020

Why it stopped: Sponsor is no longer interested in funding the study

Resources

Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
Publications (8)Papers the sponsor has linked to this study.
Other trials for DepressionStudies of the same condition, open and under way.
What the trial phases meanHow a treatment moves from first tests in people to approval.

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design

Study type: Interventional
Phase: Phase 1
Primary purpose: Treatment
Allocation: Not applicable
Intervention model: Single group
Model description: The purpose of this study is to investigate the neuroanatomical effects of ketamine treatment on patients with treatment-resistant depression. We will compare the neuroimaging of patients several days before and after injection in order to assess the more durable changes induced by ketamine. We will analyze changes in perfusion, neurovascular coupling, and functional connectivity that are correlated with psychiatric measures.
Masking: None (open label)
Enrolment: 0 participants (actual)

IDs, dates and publications

ClinicalTrials.gov ID: NCT04205890
Sponsor's protocol ID: 20190792
Status last verified: May 2020
First submitted: 16 Dec 2019
Last updated: 1 Jun 2020
Results posted: No
Data monitoring committee: No
FDA-regulated drug: Yes
FDA-regulated device: No
Individual data sharing: No: Data from this study will not be made publicly available due to ethical and privacy concerns. Anonymized data will be available upon reasonable request from any qualified investigator.

Publications

Berman RM, Cappiello A, Anand A, Oren DA, Heninger GR, Charney DS, Krystal JH. Antidepressant effects of ketamine in depressed patients. Biol Psychiatry. 2000 Feb 15;47(4):351-4. doi: 10.1016/s0006-3223(99)00230-9.
PubMed 10686270
Deakin JF, Lees J, McKie S, Hallak JE, Williams SR, Dursun SM. Glutamate and the neural basis of the subjective effects of ketamine: a pharmaco-magnetic resonance imaging study. Arch Gen Psychiatry. 2008 Feb;65(2):154-64. doi: 10.1001/archgenpsychiatry.2007.37.
PubMed 18250253
Fava M. Diagnosis and definition of treatment-resistant depression. Biol Psychiatry. 2003 Apr 15;53(8):649-59. doi: 10.1016/s0006-3223(03)00231-2.
PubMed 12706951
Lepine JP, Briley M. The increasing burden of depression. Neuropsychiatr Dis Treat. 2011;7(Suppl 1):3-7. doi: 10.2147/NDT.S19617. Epub 2011 May 31.
PubMed 21750622
Maeng S, Zarate CA Jr, Du J, Schloesser RJ, McCammon J, Chen G, Manji HK. Cellular mechanisms underlying the antidepressant effects of ketamine: role of alpha-amino-3-hydroxy-5-methylisoxazole-4-propionic acid receptors. Biol Psychiatry. 2008 Feb 15;63(4):349-52. doi: 10.1016/j.biopsych.2007.05.028. Epub 2007 Jul 23.
PubMed 17643398
Mayberg HS, Lozano AM, Voon V, McNeely HE, Seminowicz D, Hamani C, Schwalb JM, Kennedy SH. Deep brain stimulation for treatment-resistant depression. Neuron. 2005 Mar 3;45(5):651-60. doi: 10.1016/j.neuron.2005.02.014.
PubMed 15748841
U.S. Department of Health and Human Services, National Institutes of Health, National Institute of Mental Health. (2019). Major Depression. Retrieved from https://www.nimh.nih.gov/health/statistics/major-depression.shtml
U.S. Department of Health and Human Services, National Institutes of Health, National Institute of Mental Health. (2018). Depression. Retrieved from https://www.nimh.nih.gov/health/topics/depression/index.shtml

Want to know more?

The sponsor has not listed a contact. The official record may have more details.

Talk to your doctor first and take this page with you. Only the study team can confirm whether you can join.

Questions to ask the study team

What is the study trying to find out?
What would I need to do, and how often would I visit?
Could I receive a placebo instead of the treatment?
What are the possible risks and benefits for me?
Will it cost me anything? Are travel or time paid for?
Can I keep seeing my own doctor during the study?
What happens when the study ends?

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Study at a glance

From the registry record, last updated by the sponsor on 1 Jun 2020. Recruitment status is as the sponsor reported it: confirm with the study team.

Official title: Intravenous Ketamine Effects on Functional Neuroanatomy
ClinicalTrials.gov ID: NCT04205890
Acronym / sponsor ID: 20190792
Conditions: Depression
Keywords: intravenous ketamine, treatment-resistant depression
Phase: Phase 1
Study type: Interventional
Recruitment status: WithdrawnReason stopped: Sponsor is no longer interested in funding the study
Enrolment: 0 participants (actual)
Lead sponsor: Neurological Associates of West Los AngelesUniversity, hospital or other
Study start: 2 May 2020 (actual)
Primary completion: 28 May 2020 (actual)
Study completion: 28 May 2020 (actual)
First posted: 20 Dec 2019 (actual)
Results: Not posted in the source record

Clinical summary

The research question as the sponsor registered it. This describes what the study plans to test, not what it found.

Detailed description

Study design

Primary purpose: Treatment
Allocation: Not applicable
Intervention model: Single group
Masking: None (open label)
Number of arms: 1
Model description: The purpose of this study is to investigate the neuroanatomical effects of ketamine treatment on patients with treatment-resistant depression. We will compare the neuroimaging of patients several days before and after injection in order to assess the more durable changes induced by ketamine. We will analyze changes in perfusion, neurovascular coupling, and functional connectivity that are correlated with psychiatric measures.

Arm	Type	Receives
Ketamine	Experimental	Drug: KetamineThe present study is designed as a prospective data analysis of patient response to the use of ketamine to treat treatment-resistant depression. For Phase I trail, 10 patients of any gender with an age range of 18 to 70 who have undergone the outlined procedure will be recruited for inclusion. A week before the scheduled ketamine treatment, the patients will have fMRI scans, including structural T1, Arterial Spin Labeling, and Resting BOLD. The scans take around 30 minutes at no charge to the patients. The ketamine will be injected per the doctor's orders to achieve a dissociative state; dosage will vary (see below) depending on every individual's unique treatment plan. The same scans will be taken two days after treatment.

Who may qualify

Ages: 18 to 70 years
Sex: All
Healthy volunteers: Accepted
Age groups: Adult, Older adult

Key inclusion criteria (1 listed)

In order for a subject to be considered for this study, the patient must have been diagnosed with treatment-resistant depression, meaning the patient failed three medications and has been suffering from moderate treatment-resistant depression for over 6 months, indicated by a Beck Depression Inventory score of 10 or above. The patient must have been prescribed ketamine as part of their treatment plan, completely independent of any research. The patient must be willing to comply with the study protocol.

Key exclusion criteria (8 listed)

In order for a subject to be considered for this study, he/she may not have any of the following:

Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.

Interventions

Intervention	Type	Arms
KetamineThe ketamine will be injected per the doctor's orders to achieve a dissociative state; dosage varies between 75mg - 1000mg depending on every individual's unique treatment plan.	Drug	Ketamine

Primary outcome

fMRI T1 baseline
Time frame: Images to be acquired 7 days prior to Ketamine intervention
T1-data was collected as a sagittal MPRAGE sequence. T1 images are corrected for field biasing and then skull stripped and linearly registered to standard MNI space. Each patients' T1 image is segmented into 100 cortical and 15 subcortical areas using the Harvard-Oxford Cortical and Subcortical structural atlas. Mean volume is computed for each of these regions for each patient, which can be used for quantitative comparison.
fMRI T1 post-intervention comparison
Time frame: Images to be acquired at 2 days post-treatment
T1-data was collected as a sagittal MPRAGE sequence. T1 images are corrected for field biasing and then skull stripped and linearly registered to standard MNI space. Each patients' T1 image is segmented into 100 cortical and 15 subcortical areas using the Harvard-Oxford Cortical and Subcortical structural atlas. Mean volume is computed for each of these regions for each patient, which can be used for quantitative comparison.
Arterial Spin Labeling (fMRI) baseline
Time frame: Images to be acquired 7 days prior to Ketamine intervention
Pulsed Arterial Spin Labeling is collected as an echo planar sequence. ASL data is superimposed over the acquired T1-weighted brain image demonstrating a map of cerebral perfusion. Quantification to CBF values (milliliters of blood per 100g of tissue per minute) is implemented and voxel-based comparisons showing perfusion values relative to the acquired data range are used for quantification.
Arterial Spin Labeling (fMRI) post-intervention comparison
Time frame: Images to be acquired at 2 days post-treatment
Pulsed Arterial Spin Labeling is collected as an echo planar sequence. ASL data is superimposed over the acquired T1-weighted brain image demonstrating a map of cerebral perfusion. Quantification to CBF values (milliliters of blood per 100g of tissue per minute) is implemented and voxel-based comparisons showing perfusion values relative to the acquired data range are used for quantification.
fMRI Resting Bold baseline
Time frame: Images to be acquired 7 days prior to Ketamine intervention
The signal change measured in BOLD imaging comes from the brain oversupplying the region of activation with oxygen, leading to a focal decrease in deoxygenated hemoglobin. Processed BOLD imaging allows for visualization of hemodynamic response (HR) and neurovascular coupling (NVC) based on signal variability and distribution. These elements can be quantified and used for comparison.
fMRI Resting Bold post-intervention comparison
Time frame: Images to be acquired at 2 days post-treatment
The signal change measured in BOLD imaging comes from the brain oversupplying the region of activation with oxygen, leading to a focal decrease in deoxygenated hemoglobin. Processed BOLD imaging allows for visualization of hemodynamic response (HR) and neurovascular coupling (NVC) based on signal variability and distribution. These elements can be quantified and used for comparison.

9 secondary outcomes

Beck Depression Inventory
Time frame: 7 days prior to treatment
Beck Depression Inventory
Time frame: Day of treatment
Beck Depression Inventory
Time frame: 2 days after treatment
Beck Anxiety Inventory
Time frame: 7 days prior to treatment
Beck Anxiety Inventory
Time frame: Day of treatment
Beck Anxiety Inventory
Time frame: 2 days after treatment
Brief Pain Inventory
Time frame: 7 days prior to treatment
Brief Pain Inventory
Time frame: Day of Treatment
Brief Pain Inventory
Time frame: 2 days post-treatment

Results and safety

The study was withdrawn before enrolling participants, so there are no results.

Research links

Official record on ClinicalTrials.govLast updated by the sponsor 1 Jun 2020.
Background: PubMed 10686270Berman RM, Cappiello A, Anand A, Oren DA, Heninger GR, Charney DS, Krystal JH. Antidepressant effects of ketamine in depressed patients. Biol Psychiatry. 2000 Feb 15;47(4):351-4. doi: 10.1016/s0006-3223(99)00230-9.
Background: PubMed 18250253Deakin JF, Lees J, McKie S, Hallak JE, Williams SR, Dursun SM. Glutamate and the neural basis of the subjective effects of ketamine: a pharmaco-magnetic resonance imaging study. Arch Gen Psychiatry. 2008 Feb;65(2):154-64. doi: 10.1001/archgenpsychiatry.2007.37.
Background: PubMed 12706951Fava M. Diagnosis and definition of treatment-resistant depression. Biol Psychiatry. 2003 Apr 15;53(8):649-59. doi: 10.1016/s0006-3223(03)00231-2.
Background: PubMed 21750622Lepine JP, Briley M. The increasing burden of depression. Neuropsychiatr Dis Treat. 2011;7(Suppl 1):3-7. doi: 10.2147/NDT.S19617. Epub 2011 May 31.
Background: PubMed 17643398Maeng S, Zarate CA Jr, Du J, Schloesser RJ, McCammon J, Chen G, Manji HK. Cellular mechanisms underlying the antidepressant effects of ketamine: role of alpha-amino-3-hydroxy-5-methylisoxazole-4-propionic acid receptors. Biol Psychiatry. 2008 Feb 15;63(4):349-52. doi: 10.1016/j.biopsych.2007.05.028. Epub 2007 Jul 23.
Background: PubMed 15748841Mayberg HS, Lozano AM, Voon V, McNeely HE, Seminowicz D, Hamani C, Schwalb JM, Kennedy SH. Deep brain stimulation for treatment-resistant depression. Neuron. 2005 Mar 3;45(5):651-60. doi: 10.1016/j.neuron.2005.02.014.
BackgroundU.S. Department of Health and Human Services, National Institutes of Health, National Institute of Mental Health. (2019). Major Depression. Retrieved from https://www.nimh.nih.gov/health/statistics/major-depression.shtml
BackgroundU.S. Department of Health and Human Services, National Institutes of Health, National Institute of Mental Health. (2018). Depression. Retrieved from https://www.nimh.nih.gov/health/topics/depression/index.shtml
Individual participant dataSharing planned: No. Data from this study will not be made publicly available due to ethical and privacy concerns. Anonymized data will be available upon reasonable request from any qualified investigator.

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Referral and contact

AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.

Sheldon Jordan, MD principal investigator

The Neurological Associates of West Los Angeles

Taylor Kuhn, PhD principal investigator

The Neurological Associates of West Los Angeles

1 site in 1 country: see every site and its status.

Questions about this trial

What is this clinical trial studying?

A Phase 1 study testing Ketamine in people with Depression, run by Neurological Associates of West Los Angeles at 1 site in United States.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 1 inclusion and 8 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: withdrawn, as of the sponsor's last update on 1 Jun 2020. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

The study was withdrawn before enrolling participants, so there are no results.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

fMRI T1 baseline (time frame: Images to be acquired 7 days prior to Ketamine intervention). The study lists 6 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT04205890, which also lists 8 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 1 Jun 2020; AzTrials last refreshed its copy on 6 Nov 2026.