NCT01784016

Brief Summary

This trial aims to determine whether dopamine D3 receptors are elevated in smokers versus nonsmokers and whether correlations exist between D3 receptor binding potential (BP) and functional MRI (fMRI) reactivity to smoking cues, which has been associated with smoking relapse vulnerability. Neuroimaging measures of D3 BP and smoking cue fMRI reactivity will be collected concurrently in otherwise healthy nicotine-dependent smokers and age-matched nonsmokers using a 3 Tesla MRI scanner configured to conduct fMRI and Positron Emission Tomography (PET). We will measure D3 receptor BP using radiolabeled \[11C\]-(+)-PHNO, which has a relatively higher affinity for D3 versus D2 receptors. We hypothesize that D3 BP will be elevated in smokers versus nonsmokers and that in smokers, there will be a positive correlation between smoking cue fMRI reactivity and D3 BP.

Trial Health

30
At Risk

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Trial has exceeded expected completion date
Timeline
Completed

Started Jan 2014

Shorter than P25 for phase_1

Geographic Reach
1 country

3 active sites

Status
withdrawn

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

January 30, 2013

Completed
6 days until next milestone

First Posted

Study publicly available on registry

February 5, 2013

Completed
11 months until next milestone

Study Start

First participant enrolled

January 1, 2014

Completed
4 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

May 1, 2014

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

May 1, 2014

Completed
Last Updated

May 23, 2014

Status Verified

May 1, 2014

Enrollment Period

4 months

First QC Date

January 30, 2013

Last Update Submit

May 22, 2014

Conditions

Outcome Measures

Primary Outcomes (1)

  • Dopamine D3 Receptor Binding Potential Difference Between Smokers and Nonsmokers

    We will determine whether dopamine D3 receptor binding potential, a dimensionless number which represents the relative concentration of dopamine D3 receptors available for binding, is elevated in smokers versus nonsmoking controls.

    March 2014

Secondary Outcomes (1)

  • Smoking Cue fMRI Reactivity Association with Dopamine D3 Receptor Binding Potential

    March 2014

Study Arms (2)

Healthy Smokers

EXPERIMENTAL

Healthy smokers aged 18-50 years reporting average cigarette consumption of 15 or more cigarettes/day for the past year, providing an expired breath carbon monoxide reading exceeding 10 ppm at screening.

Radiation: [11C]-PHNO

Healthy Nonsmokers

EXPERIMENTAL

Healthy nonsmoking controls aged 18-50 reporting consumption of \<100 cigarettes in their lifetime, none in the last 6 months, providing an exhaled breath carbon monoxide reading of \< 9 ppm at screening.

Radiation: [11C]-PHNO

Interventions

[11C]-PHNORADIATION

\[11C\]-PHNO will be administered once intravenously to conduct Positron Emission Tomography (PET) measurements of dopamine D2/D3 binding potential.

Also known as: 11C-(+)-4-propyl-3,4,4a,5,6,10b-hexahydro-2H-naphtho[1,2-b][1,4]oxazin-9-ol
Healthy NonsmokersHealthy Smokers

Eligibility Criteria

Age18 Years - 50 Years
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64)

You may qualify if:

  • competent to provide written informed consent
  • Smokers: self-report of smoking 15 or more cigarettes/day for the past year, self-report of smoking first cigarette of the day within 30 minutes of awakening, meets DSM-IV criteria for Nicotine Dependence, provides expired breath carbon monoxide reading of \> 10 ppm at enrollment
  • Nonsmokers: self-report of consuming \<100 cigarettes in their lifetime, none in the last 6 months, provides expired breath carbon monoxide reading of \< 9 ppm at enrollment
  • Women of childbearing potential: negative STAT serum beta-human chorionic gonadotrophin pregnancy test before scanning

You may not qualify if:

  • pregnant or able to become pregnant and not willing to undergo blood pregnancy test
  • unstable medical illness with likely hospitalization for treatment within 6 months
  • life-threatening arrhythmia, cerebro-vascular or cardiovascular event within 6 months of enrollment; liver function tests elevated over 2.5x normal; CNS tumor or seizure disorder
  • users of other tobacco- or nicotine-containing products (gum, patches, e-cigarettes)
  • lifetime history of DSM-IV bulimia, organic mental disorder, brain injury or psychotic disorder
  • month history of non-nicotine substance use disorder or major depression
  • history of multiple adverse drug reactions
  • current use of excluded concomitant medications (smoking cessation medications)
  • known history of allergic reaction to the PET ligand \[11C\]-PHNO, its components, or any medication

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (3)

McLean Hospital

Belmont, Massachusetts, 02478, United States

Location

Massachusetts General Hospital

Boston, Massachusetts, 02114, United States

Location

Massachusetts General Hospital, Athinoula A. Martinos Center for Biomedical Imaging

Charlestown, Massachusetts, 02129, United States

Location

Related Publications (6)

  • Janes AC, Pizzagalli DA, Richardt S, deB Frederick B, Chuzi S, Pachas G, Culhane MA, Holmes AJ, Fava M, Evins AE, Kaufman MJ. Brain reactivity to smoking cues prior to smoking cessation predicts ability to maintain tobacco abstinence. Biol Psychiatry. 2010 Apr 15;67(8):722-9. doi: 10.1016/j.biopsych.2009.12.034. Epub 2010 Feb 20.

    PMID: 20172508BACKGROUND
  • Le Foll B, Diaz J, Sokoloff P. Increased dopamine D3 receptor expression accompanying behavioral sensitization to nicotine in rats. Synapse. 2003 Mar;47(3):176-83. doi: 10.1002/syn.10170.

    PMID: 12494400BACKGROUND
  • Searle G, Beaver JD, Comley RA, Bani M, Tziortzi A, Slifstein M, Mugnaini M, Griffante C, Wilson AA, Merlo-Pich E, Houle S, Gunn R, Rabiner EA, Laruelle M. Imaging dopamine D3 receptors in the human brain with positron emission tomography, [11C]PHNO, and a selective D3 receptor antagonist. Biol Psychiatry. 2010 Aug 15;68(4):392-9. doi: 10.1016/j.biopsych.2010.04.038.

    PMID: 20599188BACKGROUND
  • Tziortzi AC, Searle GE, Tzimopoulou S, Salinas C, Beaver JD, Jenkinson M, Laruelle M, Rabiner EA, Gunn RN. Imaging dopamine receptors in humans with [11C]-(+)-PHNO: dissection of D3 signal and anatomy. Neuroimage. 2011 Jan 1;54(1):264-77. doi: 10.1016/j.neuroimage.2010.06.044. Epub 2010 Jun 30.

    PMID: 20600980BACKGROUND
  • Wilson AA, McCormick P, Kapur S, Willeit M, Garcia A, Hussey D, Houle S, Seeman P, Ginovart N. Radiosynthesis and evaluation of [11C]-(+)-4-propyl-3,4,4a,5,6,10b-hexahydro-2H-naphtho[1,2-b][1,4]oxazin-9-ol as a potential radiotracer for in vivo imaging of the dopamine D2 high-affinity state with positron emission tomography. J Med Chem. 2005 Jun 16;48(12):4153-60. doi: 10.1021/jm050155n.

    PMID: 15943487BACKGROUND
  • Pak AC, Ashby CR Jr, Heidbreder CA, Pilla M, Gilbert J, Xi ZX, Gardner EL. The selective dopamine D3 receptor antagonist SB-277011A reduces nicotine-enhanced brain reward and nicotine-paired environmental cue functions. Int J Neuropsychopharmacol. 2006 Oct;9(5):585-602. doi: 10.1017/S1461145706006560. Epub 2006 Aug 31.

    PMID: 16942635BACKGROUND

MeSH Terms

Conditions

Tobacco Use Disorder

Interventions

naxagolide

Condition Hierarchy (Ancestors)

Substance-Related DisordersChemically-Induced DisordersMental Disorders

Study Officials

  • Marc J. Kaufman, Ph.D.

    Mclean Hospital

    PRINCIPAL INVESTIGATOR
0

Study Design

Study Type
interventional
Phase
phase 1
Allocation
NON RANDOMIZED
Masking
NONE
Purpose
BASIC SCIENCE
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Director, Translational Imaging Laboratory, McLean Hospital

Study Record Dates

First Submitted

January 30, 2013

First Posted

February 5, 2013

Study Start

January 1, 2014

Primary Completion

May 1, 2014

Study Completion

May 1, 2014

Last Updated

May 23, 2014

Record last verified: 2014-05

Locations