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Augmenting Exposure Therapy With an N-Methyl-D-Aspartate (NMDA) Agonist for Panic Disorder

Placebo-Controlled Evaluation of the Efficacy of D-Cycloserine for Enhancing the Effects of CBT for Panic Disorder

Status
Completed
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT00131339
Enrollment
40
Registered
2005-08-18
Start date
2004-11-30
Completion date
2007-03-31
Last updated
2009-08-26

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Panic Disorder

Keywords

panic disorder, cognitive behavioral therapy, D-cycloserine, medication, treatment trial, placebo-controlled, double-blind, randomized

Brief summary

This study involves cognitive behavioral therapy (CBT) and a medication called D-cycloserine (DCS), which is thought to help reduce panic symptoms more effectively by interacting with N-methyl-D-aspartate (NMDA) glutamate receptors, facilitating many forms of learning including the extinction of fear. Participants will be randomly assigned (like flipping a coin) to receive either DCS or a placebo in addition to CBT.

Detailed description

This study consists of cognitive behavioral therapy (CBT) including exposure to physical sensations and feared situations, which have been demonstrated to be effective for many individuals with panic disorder. All assessments and treatment sessions are free of charge. Half of the patients will be randomly assigned to receive D-cycloserine (DCS) and half wll be assigned to receive a placebo. Although DCS is used in humans to treat tuberculosis, it has not been FDA approved for this indication. Recent research in other anxiety disorders has shown that DCS plus behavior therapy is more effective than behavior therapy alone. This treatment study had two active interventions. All patients will receive CBT and the researchers expect that everybody will improve from this treatment. However, it may be that those patients in the DCS intervention will improve somewhat more than those in the placebo intervention. The treatment will be structured with at home practice and repeated assessments. Assessments are extremely important as they guide the treatment and provide the study investigators necessary information about the treatment. The treatment consists of 5 sessions (once a week) plus a one week post-treatment assessment and follow-up assessments at one month and six months.

Interventions

BEHAVIORALCognitive behavioral therapy
DRUGD-cycloserine

Sponsors

Hartford Hospital
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
DOUBLE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Principal diagnosis of panic disorder

Exclusion criteria

* History of psychotic disorders or bipolar disorder * Substance dependence * Pregnant or breastfeeding * History of a medical condition that may increase the risks of taking the study drug

Design outcomes

Primary

MeasureTime frame
significant reduction in panic symptoms after completion of treatment

Countries

United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026