Repeated Ketamine Infusions for Comorbid PTSD and MDD in Veterans

Co-occurring post-traumatic stress disorder (PTSD) and major depressive disorder (MDD) is the most common response to trauma; it is associated with poor clinical outcomes and substantial human disability.

Veterans with both PTSD and MDD (PTSD+MDD) have been shown to be at much greater suicidal risk than individuals with only one of these disorders. Ketamine given as repeated infusions has been shown to be effective in rapidly reducing PTSD and MDD symptoms in treatment resistant PTSD+MDD individuals. However, knowledge about the mechanisms underlying comorbid PTSD and MDD remain limited.

The purpose of this study is to use repeated ketamine infusions as a probe to validate a model of PTSD+MDD that focuses on neuroanatomy and executive functioning.

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Status Recruiting
Start date 30 September 2019
End date 01 September 2024
Chance of happening 100%
Phase Phase I
Design Blinded
Type Interventional
Generation First
Participants 108
Sex All
Age 18- 75
Therapy No

Trial Details

This study is designed to better characterize the neurocognitive and associated functional connectivity mechanisms underlying comorbid post-traumatic stress disorder (PTSD) and major depressive disorder (MDD) among veterans. Participants will be male/female veterans (18 to 75 years old) of any era or military background who suffer from chronic PTSD and MDD. Potential participants will be recruited from mental health clinics and screened for eligibility using a two stage process (phone/chart review, followed by interview). Participants with PTSD+MDD will undergo a series of baseline assessments including a baseline functional magnetic resonance imaging (fMRI) then be randomized to receive either 6 ketamine or 6 normal saline infusions on a Monday-Friday schedule over 3 weeks. On the day of infusion, participants will be required to stay at the clinical site for 2 hours after the infusion has been given. They will also be monitored via a phone call on the following day. After the infusion period has been completed participants will undergo a follow-up fMRI then 4 follow-up visits, up to 2 months. Additional participants will be enrolled in healthy control, depression only, and PTSD only groups and will only undergo baseline assessments, including a single fMRI.

NCT Number NCT04032301

Sponsors & Collaborators

University of New Mexico
This company doesn't have a full profile yet, it is linked to a clinical trial.

Heffter Research Institute
The Heffter Research Institute has been advancing psychedelics (psilocybin) as medicines since 1993.

Measures Used

Montgomery-Asberg Depression Rating Scale
A ten-item diagnostic questionnaire used to measure the severity of depressive symptoms in patients with mood disorders.

PTSD Symptom Scale Interview for DSM-5
The PTSD Symptom Scale Interview for DSM-5 (PSS-I-5) is a 24-item semi-structured interview that assesses PTSD symptoms in the past month and makes a diagnostic determination based upon DSM-5 criteria. Respondents with a known trauma history identify a single traumatic event that causes the most current distress. Each of the 24-items is assessed with a single question with no follow-up questions. Symptom items are then rated on a five-point scale of frequency and severity ranging from 0 (not at all) to 4 (6 or more times/week).

Data attribution

A large set of the trials in our database are sourced from ClinicalTrials.gov (CTG). We have modified these post to display the information in a more clear format or to correct spelling mistakes. Our database in actively updated and may show a different status (e.g. completed) if we have knowledge of this update (e.g. a published paper on the study) which isn't reflected yet on CTG. If a trial is not sourced from CTG, this is indicated on this page and you can follow the link to the alternative source of information.
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