Dextro-Amphetamine Versus Caffeine in Treatment-resistant OCD
|Study Design:||Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double (Participant, Investigator)
Primary Purpose: Treatment
|Official Title:||Double-blind Trial of Acute and Intermediate-term Dextro-amphetamine Versus Caffeine Augmentation in Treatment Resistant Obsessive Compulsive Disorder (OCD)|
- Number of Subjects With Clinical Global Impressions Scale - Improvement (CGI-I) Score of 1 or 2 [ Time Frame: At end of week 5, except 1 d-amphetamine subject rated at end of week 2 ]Clinical Global Impressions Scale Improvement Score = 1 (very much improved), or 2 (much improved). Additional possible scale scores are 3 (minimally improved), 4 (no change), 5 (minimally worse), 6 (much worse) and 7 (very much worse).
- Yale-Brown Obsessive-Compulsive Scale (Y-BOCS) Score [ Time Frame: At end of week 5, except 1 d-amphetamine subject rated at end of week 2 ]Yale-Brown Obsessive-Compulsive Scale score by blinded investigator in direct interview. The scale score is the sum of ten items (5 for obsessions and 5 for compulsions: time occupied, degree of interference with functioning, degree of distress, effort to resist the symptom, success in resisting), each rated from 0 to 4, with higher scores indicating more severe OCD. Maximum score is 40. Scores of 14 and below are often described as "subclinical," though patients with these scores may still exhibit troubling symptoms and mild to moderate distress. A total score of 8 or less is often termed "remission." A decrease in total score from baseline to endpoint of either 25% or 35% is often used as a "responder" criterion in clinical trials.
|Study Start Date:||August 2006|
|Study Completion Date:||March 2008|
|Primary Completion Date:||March 2008 (Final data collection date for primary outcome measure)|
dextro-amphetamine capsules, 15 mg per capsule, in Bottles A and B, dose: one from Bottle A each morning and 1 from Bottle B each morning
dextro-amphetamine dosage form: 15 mg capsules, in Bottles A and B. Dosage: One capsule from Bottle A and one capsule from bottle B each morning. Frequency: once daily. Duration: 5 weeks.
Other Name: Dexedrine
Sham Comparator: Sham comparison
caffeine in capsules identical to those containing d-amphetamine, with 200 mg of caffeine in Bottle A capsules, and 100 mg of caffeine in Bottle B capsules, dose was 1 capsule from Bottle A and 1 capsule from Bottle B each morning
Drug: Sham Comparison
caffeine dosage form: capsules identical to those in dextro-amphetamine arm, but containing 200 mg caffeine in Bottle A and 100 mg caffeine in Bottle B. Frequency: once daily. Duration: 5 weeks
Other Name: Caffeine, 300 mg/day
The study will investigate whether dextro-amphetamine (d-amphetamine) is safe and effective compared to caffeine as an active placebo when used to augment treatment for Obsessive-Compulsive Disorder (OCD), and whether tolerance (loss of therapeutic effect) to the medication will develop over a period of several weeks
D-amphetamine is approved by the U.S. Food and Drug Administration to treat Attention Deficit Hyperactivity Disorder (ADHD) in children and adolescents. Because of the effects that d-amphetamine has on the brain, Dr. Koran believes it may be helpful in treating OCD. A positive finding in this study may stimulate research aimed at improving OCD treatment and understanding of the neurochemistry involved.
This research study will enroll 24 people who are taking medication for their OCD but are not receiving sufficient benefit. The research will be performed only at Stanford University.
Please refer to this study by its ClinicalTrials.gov identifier: NCT00363298
|United States, California|
|Stanford University School of Medicine|
|Stanford, California, United States, 94305|
|Principal Investigator:||Lorrin M Koran||Stanford University|