ClinicalTrials.gg
CompletedNCT02522377Updated Aug 29, 2019Results posted

Administration of Subanesthetic Dose of Ketamine and Electroconvulsive Treatment for Treatment Resistant Depression

An interventional study of Ketamine and Midazolam in Treatment Resistant Depression, Major Depressive Disorder and Severe Depression, sponsored by The Cleveland Clinic. Completed at 1 site in United States. Open to participants aged 18 Years to 65 Years. Per ClinicalTrials.gov, last updated 2019-08-29.

Sponsored by The Cleveland Clinic · Not applicable, Interventional, and Treatment

Phase
Not applicable
Study type
Interventional
Enrollment
15
Allocation
Randomized
Ages
18 Years to 65 Years
Sex
All
01

Study summary

In this proof of concept study, the investigators plan to administer iv ketamine interleaved with ECT days.

Patients with treatment resistant depression who are deemed to be eligible for ECT treatment will randomly be assigned to either ketamine or active placebo.

Read the detailed description

The study will compare the effects of standard ketamine dosing with an active placebo arm.

Hypothesis 1:

The investigators hypothesize that interleaved Electroconvulsive Treatment and active ketamine treatment will lead to a meaningful clinical improvement compared to Electroconvulsive Treatment and placebo treatment arm.

Hypothesis 2:

The investigators hypothesize that interleaved Electroconvulsive Treatment and active ketamine treatment will attenuate cognitive side effects.

Methods and Design:

Patients with treatment resistant depression who are deemed to be eligible for Electroconvulsive Treatment will randomly be assigned to either ketamine or active placebo

Electroconvulsive Treatments:

All patients (independent of their depression scores) will receive the same Electroconvulsive Treatment parameters: Bi-frontal brief pulse (0.5 miliseconds) Electroconvulsive Treatment administered by using Thymatron Electroconvulsive Treatment machine.

Study blinding:

Neither the patients, nor the treating psychiatrist or the nurse will be aware of the patient's assigned arm. The success of blinding will be tested after each ketamine treatment with a questionnaire given to the subject, raters, and treating physician.

02

Conditions studied

  • Treatment Resistant Depression
  • Major Depressive Disorder
  • Severe Depression

Keywords

  • Ketamine
  • Electroconvulsive Therapy
  • Major Depressive Disorder
  • Treatment Resistant Depression
  • electroconvulsive treatment
  • Severe depression
03

In context

Depressive Disorder, Treatment-Resistant

472 studies on the registry are indexed under Depressive Disorder, Treatment-Resistant; 151 are open to participants now.

This study's enrollment of 15 is below the median of 51 across 397 interventional studies indexed under Depressive Disorder, Treatment-Resistant.

Browse Depressive Disorder, Treatment-Resistant studies →

Lead sponsor

The Cleveland Clinic is the lead sponsor of 831 studies on the registry; 119 are open to participants now.

Of its 90 completed or terminated interventional studies of FDA-regulated products, 73 (81%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 65 Years
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  1. Males/females at least 18 years of age but no older than 65 years of age
  2. Meet Diagnostic and Statistical Manual of Mental Disorders-4th Edition (DSM-IV) criteria for Major Depression or Bipolar Disorder, depressed phase, as determined by a clinician's diagnostic evaluation and confirmed by interview using the Mini International Neuropsychiatric Interview (MINI PLUS 5.0.0)
  3. A current depressive episode that has lasted a minimum of 4 weeks.
  4. Have > 3 trials of antidepressants/augmentation strategies.
  5. Have a support system capable of transporting the patient post-treatment.

Exclusion criteria

Exclusion Criteria:

  1. Meeting Diagnostic and Statistical Manual of Mental Disorders criteria for schizophrenia, schizophreniform disorder, schizoaffective disorder, mental retardation, pervasive developmental disorder.
  2. Meeting Diagnostic and Statistical Manual of Mental Disorders criteria for other substance/alcohol dependence within the past 6 months or abuse in the past 3 months.
  3. Patients who meet exclusion criteria for ketamine and/or midazolam infusion.
05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Quadruple (Participant, Care provider, Investigator, Outcomes assessor)
Enrollment
15 participants (actual)

Study arms

  • Experimental
    Ketamine Infusions

    Subjects who are randomized to be on this group will receive a standard dose of ketamine interleaved with Electroconvulsive Treatments.

    Drug: Ketamine

  • Active comparator
    Midazolam

    Subjects who are randomized to be on this group will receive midazolam infusions interleaved with Electroconvulsive Treatments.

    Drug: Midazolam

Interventions

  • inter venous injections

    Also known as: Ketalar, Calypsol, Ketanest, Tekam

  • inter venous injections

    Also known as: Dormicum, Hypnovel, Versed

06

What researchers measure

Primary outcomes

  1. Hamilton Depression Rating Scale (HAMD-17) at Last Infusion

    Change in HAMD-17 at Infusion 6. Scores range from 0 to 50, with higher scores representing more depression.

    Time frame: visit 17

  2. Montgomery Asberg Depression Rating Scale (MADRS) at Last Infusion

    Higher MADRS score indicates more severe depression, and each item yields a score of 0 to 6. The overall score ranges from 0 to 60

    Time frame: visit 17

Secondary outcomes

  1. Montreal Cognitive Assessment (MOCA) at Last Infusion

    MoCA scores range between 0 and 30. Higher scores reflect higher cognition.

    Time frame: visit 17

  2. Hopkins Verbal Learning Test - Revised (HVLT-R) at Last Infusion

    The number of words remembered are recorded. Scores range from 0 to 12 with higher scores reflecting better acquisition.

    Time frame: visit 17

  3. Controlled Oral Word Association Test (COWAT) at Last Infusion

    This is a verbal fluency measure. Outcome is the count of words that meet criteria within 1 minute, so the minimum is 0 and no fixed maximum exists. Higher scores reflect a better outcome.

    Time frame: visit 17

  4. Responder Rate on HAMD-17 by Last Infusion

    Count of the patients who showed response (\>50% decrease).

    Time frame: visit 17

07

Results

Posted Aug 29, 2019

Participant flow

Patients with TRD who are admitted to the inpatient psychiatric to receive an acute series of ECT will randomly be assigned to one of the study arms.

Participant flow — Overall Study
MilestoneKetamine InfusionsMidazolam
Started75
Completed35
Not completed40
Withdrew: Withdrawal by subject10
Withdrew: Remission achieved30

Outcome measures

PrimaryHamilton Depression Rating Scale (HAMD-17) at Last Infusion

Change in HAMD-17 at Infusion 6. Scores range from 0 to 50, with higher scores representing more depression.

Time frame:
visit 17
Reported as:
Mean · score on a scale
Hamilton Depression Rating Scale (HAMD-17) at Last Infusion
score on a scaleKetamine InfusionsMidazolam
Hamilton Depression Rating Scale (HAMD-17) at Last Infusion13.74 ± 2.6214.97 ± 2.85
Statistical analysis
  • Ketamine Infusions vs Midazolam · Mixed Models Analysis · p = 0.72 · Mean difference (final values): 1.22Midazolam - Ketamine Infusions
PrimaryMontgomery Asberg Depression Rating Scale (MADRS) at Last Infusion

Higher MADRS score indicates more severe depression, and each item yields a score of 0 to 6. The overall score ranges from 0 to 60

Time frame:
visit 17
Reported as:
Mean · score on a scale
Montgomery Asberg Depression Rating Scale (MADRS) at Last Infusion
score on a scaleKetamine InfusionsMidazolam
Montgomery Asberg Depression Rating Scale (MADRS) at Last Infusion22.29 ± 4.5224.27 ± 5.93
Statistical analysis
  • Ketamine Infusions vs Midazolam · Mixed Models Analysis · p = 0.77 · Mean difference (final values): 1.98Midazolam - Ketamine Infusions
SecondaryMontreal Cognitive Assessment (MOCA) at Last Infusion

MoCA scores range between 0 and 30. Higher scores reflect higher cognition.

Time frame:
visit 17
Reported as:
Mean · score on a scale
Montreal Cognitive Assessment (MOCA) at Last Infusion
score on a scaleKetamine InfusionsMidazolam
Montreal Cognitive Assessment (MOCA) at Last Infusion24.81 ± 0.9625.79 ± 0.97
Statistical analysis
  • Ketamine Infusions vs Midazolam · Mixed Models Analysis · p = 0.40 · Mean difference (final values): 0.98Midazolam - Ketamine Infusions
SecondaryHopkins Verbal Learning Test - Revised (HVLT-R) at Last Infusion

The number of words remembered are recorded. Scores range from 0 to 12 with higher scores reflecting better acquisition.

Time frame:
visit 17
Reported as:
Mean · score on a scale
Hopkins Verbal Learning Test - Revised (HVLT-R) at Last Infusion
score on a scaleKetamine InfusionsMidazolam
Hopkins Verbal Learning Test - Revised (HVLT-R) at Last Infusion9.42 ± 0.5611.20 ± 0.56
Statistical analysis
  • Ketamine Infusions vs Midazolam · Mixed Models Analysis · p = 0.009 · Mean difference (final values): 1.78Midazolam - Ketamine Infusions
SecondaryControlled Oral Word Association Test (COWAT) at Last Infusion

This is a verbal fluency measure. Outcome is the count of words that meet criteria within 1 minute, so the minimum is 0 and no fixed maximum exists. Higher scores reflect a better outcome.

Time frame:
visit 17
Reported as:
Mean · number of words
Controlled Oral Word Association Test (COWAT) at Last Infusion
number of wordsKetamine InfusionsMidazolam
Controlled Oral Word Association Test (COWAT) at Last Infusion33.45 ± 2.8337.17 ± 3.03
Statistical analysis
  • Ketamine Infusions vs Midazolam · Mixed Models Analysis · p = 0.34 · Mean difference (final values): 3.72Midazolam - Ketamine Infusions
SecondaryResponder Rate on HAMD-17 by Last Infusion

Count of the patients who showed response (\>50% decrease).

Time frame:
visit 17
Reported as:
Count of participants · Participants
Responder Rate on HAMD-17 by Last Infusion
ParticipantsKetamine InfusionsMidazolam
No Response44
Response31
Statistical analysis
  • Ketamine Infusions vs Midazolam · Fisher Exact · p = 0.58 · Odds ratio (or): 0.36 · 95% CI 0.01 to 7.20Odds Ratio of Midazolam (numerator) to Ketamine Infusions (denominator)

Adverse events

Collected over 3 weeks. Non-serious events are listed at a 0% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Ketamine Infusions0/7 (0%)0/7 (0%)1/7 (14.3%)
Midazolam0/5 (0%)0/5 (0%)0/5 (0%)
Most frequent other events
Most frequent other events
EventKetamine InfusionsMidazolam
Suicidal ThoughtsPsychiatric disorders1/70/5

Baseline characteristics

Age, Categorical
Age, Categorical(Participants)Ketamine InfusionsMidazolamTotal
<=18 years000
Between 18 and 65 years7512
>=65 years000
Age, Continuous
Age, Continuous(years)Ketamine InfusionsMidazolamTotal
Mean39.1 ± 11.937.6 ± 15.538.5 ± 12.9
Sex: Female, Male
Sex: Female, Male(Participants)Ketamine InfusionsMidazolamTotal
Female6410
Male112
Race/Ethnicity, Customized
Race/Ethnicity, Customized(Participants)Ketamine InfusionsMidazolamTotal
Race — Caucasian549
Race — Other213
Region of Enrollment
Region of Enrollment(participants)Ketamine InfusionsMidazolamTotal
United States7512
08

Study locations

1 site
  • Cleveland Clinic Foundation Center for Behavioral Health
    Cleveland, Ohio 44195, United States
09

References and documents

Study documents

  • Protocol and statistical analysis plan · Jan 12, 2016

Documents are hosted by the registry — open the source record to download them.

Individual participant data

Plan to share: Undecided

10

Timeline

Tracking since Sep 25, 2026
Not marked actual or estimatedDates not marked actual or estimated

The record gives a start of Aug 2015, a primary completion of Mar 2018 and a completion of Mar 2018. It does not say whether these dates are actual or estimated.

Results were first posted in Aug 2019, 1 year 5 months after primary completion.

How these figures are worked out, and which studies are left out of them.

Registered
Aug 7, 2015
First posted
Aug 13, 2015
Start
Aug 2015
Primary completionActual
Mar 1, 2018
CompletionActual
Mar 1, 2018
Results first posted
Aug 29, 2019
Last update
Aug 29, 2019
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Aug 29, 2019, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT02522377
Responsible party
Dr. Murat Altinay (Staff, The Cleveland Clinic) — Principal investigator
First posted
Aug 13, 2015
Start date
Aug 2015
Primary completion
Mar 1, 2018
Completion
Mar 1, 2018
Results posted
Aug 29, 2019
Last update
Aug 29, 2019

Study contacts

Murat Altinay, MD
principal investigator · The Cleveland Clinic

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

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Studies of the drug tested here: Ketamine

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