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RecruitingNCT07410481Updated Apr 9, 2026

Trial of Acceptance and Mindfulness-based Exposure Therapy (AMBET) and Present Centered Therapy (PCT)

An interventional study of Acceptance and Mindfulness Based Exposure Therapy and Present-Centered Therapy in PTSD - Post Traumatic Stress Disorder and Cardiac Arrest (CA), sponsored by Columbia University. Recruiting at 1 site in United States. Open to participants aged 18 Years to 81 Years. Per ClinicalTrials.gov, last updated 2026-04-09.

Sponsored by Columbia University · Not applicable, Interventional, and Treatment

From the registry’s dates

  • Started Mar 2026; still recruiting 7 months later.
Phase
Not applicable
Study type
Interventional
Enrollment
90
Allocation
Randomized
Ages
18 Years to 81 Years
Sex
All
01

Study summary

The goal of this clinical trial is to learn if a new therapy called Acceptance- and Mindfulness-Based Exposure Therapy (AMBET) helps treat post-traumatic stress disorder (PTSD) in people who survived a cardiac arrest. This study will compare AMBET to another psychotherapy treatment called Present Centered Therapy (PCT) to see which therapy is more effective in treating PTSD.

The main questions it aims to answer are:

Does AMBET reduce PTSD symptoms in survivors of cardiac arrest? How do the benefits of AMBET compare to PCT?

Participants will:

  • Be randomly assigned to receive either AMBET or PCT
  • Attend 12 hours of individual psychotherapy sessions over about 12 weeks
  • Complete short weekly surveys about their mood and behaviors online
  • Wear a Fitbit device to track sleep and activity during the study
  • Do brief homework assignments between sessions
02

Conditions studied

  • PTSD - Post Traumatic Stress Disorder
  • Cardiac Arrest (CA)
03

In context

Combat Disorders

200 studies on the registry are indexed under Combat Disorders; 90 are open to participants now.

This study's planned enrollment of 90 is above the median of 72 across 167 interventional studies indexed under Combat Disorders.

Browse Combat Disorders studies →

Lead sponsor

Columbia University is the lead sponsor of 1,136 studies on the registry; 195 are open to participants now.

Of its 180 completed or terminated interventional studies of FDA-regulated products, 148 (82%) have results posted.

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

04

Who can participate

Ages eligible
18 Years to 81 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. Between 18 and 81 years old at the time of consent
  2. Fluency in English
  3. Medical history of cardiac arrest >3 months ago
  4. Clinically elevated PTSD symptoms (Clinician-Administered PTSD Scale for (CAPS-5) score ≥25)
  5. U.S. Resident

Exclusion criteria

Exclusion Criteria:

  1. Lifetime history of primary psychotic or bipolar disorders
  2. Current substance use disorder (moderate or severe in the past 6 months)
  3. Active suicidal ideation with some intent to act in past 12 months, and/or suicide attempt in past 24 months
  4. Substantial cognitive impairment (Mini Mental Status Exam () score \<25)
  5. Initiation of new psychotropic medication \<3 months ago
  6. Non-cardiac etiology of CA (drowning, bleeding, trauma, drug overdose, etc)
  7. Terminal illness with \<1 year
  8. Concurrent psychotherapy for PTSD
Terms in these criteria, in plain language(3)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

DSM diagnostic criteria

The American Psychiatric Association’s manual of mental health diagnoses. DSM-5 (2013, revised as DSM-5-TR in 2022) replaced DSM-IV, and some studies still name the older edition. “Meets DSM criteria for …” means diagnosed by that edition’s diagnostic criteria, usually by a clinician in an interview.

MMSE and MoCA

Short tests of memory and thinking, each scored out of 30. Lower scores suggest more difficulty; criteria give a range, either to include people with memory problems or to leave them out.

Life expectancy

The study doctor’s estimate of how long someone is likely to live. Criteria use it so that people can stay in the study long enough for it to answer its question.

05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Single (Outcomes assessor)
Enrollment
90 participants (estimated)

Study arms

  • Experimental
    Acceptance- and mindfulness-based exposure therapy (AMBET)

    Remotely delivered psychotherapy combining exposure therapy with mindfulness.

    Behavioral: Acceptance and Mindfulness Based Exposure Therapy

  • Active comparator
    Present-Centered Therapy (PCT)

    Remotely delivered psychotherapy that focuses on increasing adaptive responses to current life stressors and difficulties.

    Behavioral: Present-Centered Therapy

Interventions

  • BehavioralAcceptance and Mindfulness Based Exposure Therapy

    Eight sessions of exposure therapy combined with mindfulness delivered via videoconferencing platform. AMBET will consist of 90-minute weekly sessions for 4 weeks, then every other week for 4 more sessions.

    Also known as: AMBET

  • BehavioralPresent-Centered Therapy

    Twelve 60-minute weekly sessions of psychotherapy delivered via videoconferencing platform.

    Also known as: PCT

06

What researchers measure

Primary outcomes

  1. Change in PTSD symptoms over time

    Change in symptoms as measured by the Clinician Administered PTSD Scale (CAPS-5) from pre- to post-treatment. The full score range is 0 - 80, where lower scores indicate lower symptom levels of PTSD.

    Time frame: Baseline, At 6 weeks, Post-treatment: Approximately 3 months and 6 months from intake

Secondary outcomes

  1. Change in depressive symptoms over time

    Change in symptoms as measured by the Hamilton Depression Rating Scale (HDRS-24) from pre- to post-treatment. The full score range is 0 - 76, where lower scores indicate lower symptom levels of depression.

    Time frame: Baseline, At 6 weeks, Post-treatment: approximately 3 months and 6 months from intake

07

Study locations

1 of 1 sites recruiting
08

References and documents

Individual participant data

Plan to share: Undecided

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Apr 9, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT07410481
Responsible party
Yuval Neria (Professor of Clinical Medical Psychology, Columbia University) — Principal investigator
First posted
Feb 13, 2026
Start date
Mar 31, 2026
Primary completion
Jun 30, 2028 (estimated)
Completion
Mar 31, 2029 (estimated)
Last update
Apr 9, 2026

Study contacts

Yuval Neria, Ph.D.
Contact
ny126@cumc.columbia.edu
212-543-6061
Maja Bergman, Ph.D.
Contact
mb3829@cumc.columbia.edu
212-543-6061
Yuval Neria, PhD
principal investigator · Columbia University
Maja Bergman, PhD
study director · Columbia University

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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