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Cognitive Effects of Atomoxetine in Humans: Genetic Moderators

This study has been completed.
Information provided by (Responsible Party):
Mehmet Sofuoglu, Yale University Identifier:
First received: December 20, 2011
Last updated: December 15, 2014
Last verified: December 2014
The overall goal of this study is to determine if atomoxetine treatment improves selective cognitive functions in abstinent cocaine users, compared to healthy controls. The study will also test if a functional variation of the NET promoter polymorphic region (NETpPR) moderates the cognitive effects of atomoxetine.

Condition Intervention
Drug: Atomoxetine
Drug: Sugar Pill

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Crossover Assignment
Masking: Double Blind (Participant, Investigator)
Primary Purpose: Treatment
Official Title: Cognitive Effects of Atomoxetine in Humans: Genetic Moderators

Resource links provided by NLM:

Further study details as provided by Yale University:

Primary Outcome Measures:
  • Rapid Visual Information Processing [ Time Frame: 2 years ]
    Cognitive Test to determine the speed of Visual information

Enrollment: 35
Study Start Date: December 2011
Study Completion Date: July 2013
Primary Completion Date: July 2013 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Active Comparator: Atomoxetine Drug: Sugar Pill
Once out of the three days
Placebo Comparator: Sugar Pill Drug: Atomoxetine
40mg or 80mg

Detailed Description:

This will be a double-blind, placebo-controlled, crossover study, with cocaine use (cocaine users vs. healthy controls) and NET AAGG4 status (L4/ L4 vs. L4/S4 or S4/ S4 genotype) as the between-subject factors. Similar to previous studies, we propose to compare individuals with two copies of the L4 allele to participants with at least one S4 allele because only less than two percent of the general population is homozygous for the S4 allele. Forty cocaine users and 40 healthy controls will participate in 3 test sessions, where they will be assigned to 40 mg atomoxetine, 80 mg atomoxetine, or placebo. Outcome measures will include physiological, subjective, and cognitive performance measures.

To date this study has 35 completers and currently in data analysis. (December 2014)


Ages Eligible for Study:   21 Years to 50 Years   (Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Male and females, between the ages of 21 and 50;
  • No current dependence or abuse of drugs of abuse or alcohol (except and tobacco);
  • No current medical problems and normal ECG;
  • For women, not pregnant as determined by pregnancy screening nor breast feeding, and using acceptable birth control methods.

Exclusion Criteria:

  • Current major psychiatric illnesses including mood, psychotic, or anxiety disorders;
  • History of major medical illnesses; including liver diseases, heart disease, or other medical conditions that the physician investigator deems contraindicated for the subject to be in the study;
  • Known allergy to Atomoxetine;
  • Use of Monoamine Oxidase inhibitor within the last month (clinically Atomoxetine administration is contraindicated with or within 2 weeks of discontinuation of Monoamine oxidase inhibitor therapy).
  Contacts and Locations
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Please refer to this study by its identifier: NCT01498549

United States, Connecticut
Department of Veterans Affairs
West Haven, Connecticut, United States, 06516
Sponsors and Collaborators
Yale University
Principal Investigator: Mehmet Sofuoglu, M.D., Ph.D. Yale University
  More Information

Responsible Party: Mehmet Sofuoglu, Prinicipal Investigator, Yale University Identifier: NCT01498549     History of Changes
Other Study ID Numbers: 1103008235
Study First Received: December 20, 2011
Last Updated: December 15, 2014

Keywords provided by Yale University:
Abstinent cocaine users
cognitive testing

Additional relevant MeSH terms:
Atomoxetine Hydrochloride
Adrenergic Uptake Inhibitors
Neurotransmitter Uptake Inhibitors
Membrane Transport Modulators
Molecular Mechanisms of Pharmacological Action
Adrenergic Agents
Neurotransmitter Agents
Physiological Effects of Drugs processed this record on May 22, 2017