NCT03213418

Brief Summary

This project aims to develop electroretinogram as a new putative marker for dopamine release, and as a predictor of treatment response among patients seeking treatment for smoking cessation. Tobacco smoking continues to be a major public health challenge. Dopamine is a neurotransmitter released in the brain. Several lines of evidence suggest that dopamine release deficit in the brain is involved in the development and maintenance of nicotine dependence. The investigators hypothesize that smokers who do not have a deficit in dopamine release will more readily respond to behavioral treatment for smoking cessation, and in particular, financial incentives contingent on abstinence (Contingency Management). Previous pilot data suggest electroretinogram (ERG), which records electrical signals from the retina in response to light, is a clinically accessible correlate to dopamine release in the brain. The project proposes an ERG-based biomarker, and a pilot clinical trial to apply this biomarker to personalize smoking cessation treatment. This clinically tractable biomarker of central dopamine release may have a large number of future applications in the diagnosis and treatment of other mental illnesses and substance use disorders. The study will recruit normal controls and smokers, measure ERG before and after a standard dose of oral immediate release methylphenidate. Smokers will undergo a 12-week standardized treatment course of CM. The investigators will test whether smoking status and the response to CM are correlated to changes in ERG in response to methylphenidate challenge.

Trial Health

57
Monitor

Trial Health Score

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

Enrollment
11

participants targeted

Target at below P25 for not_applicable

Timeline
Completed

Started Feb 2018

Longer than P75 for not_applicable

Geographic Reach
1 country

1 active site

Status
terminated

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

July 6, 2017

Completed
5 days until next milestone

First Posted

Study publicly available on registry

July 11, 2017

Completed
7 months until next milestone

Study Start

First participant enrolled

February 1, 2018

Completed
4.8 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

November 1, 2022

Completed
1 month until next milestone

Study Completion

Last participant's last visit for all outcomes

December 1, 2022

Completed
Last Updated

January 5, 2023

Status Verified

January 1, 2023

Enrollment Period

4.8 years

First QC Date

July 6, 2017

Last Update Submit

January 3, 2023

Conditions

Keywords

tobaccosmokingTobacco UseTobacco DependenceSmoking, TobaccoCigarette SmokingCigaretteNicotine

Outcome Measures

Primary Outcomes (1)

  • Abstinence

    Prolonged abstinence from cigarette smoking will be measured through a combination of self-reported timeline follow back, as it is corroborated with urine cotinine and expired CO levels.

    1 month

Study Arms (1)

Contingency management

EXPERIMENTAL
Behavioral: Contingency management

Interventions

Contingency management is an evidence-based psychotherapy program that promotes behavioral change with financial incentives.

Contingency management

Eligibility Criteria

Age18 Years - 55 Years
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64)

You may qualify if:

  • Be between the ages of 18 to 55 years of age.
  • Have an estimated average daily consumption of greater than 10 cigarettes.
  • Have a Fagerstrom Nicotine Dependence Scale (FTND) \>= 5.
  • Is willing to try a method of smoking cessation without using any pharmacologic help for 3 months.

You may not qualify if:

  • Present with a serious psychiatric illness or substantial suicide or violence risk, as assessed by a licensed clinician involved in the screening phase of the study.
  • Present with any history or current substance use disorder (other than tobacco use disorder), or significant substance use for any substance other than nicotine, alcohol or caffeine, defined as greater than once weekly use.
  • Legally mandated to complete a substance abuse treatment program.
  • Express a desire or intent to obtain additional substance abuse treatment while in the study.
  • Have history of psychotic symptoms such as hallucinations and delusions.
  • Have history of using other smoking cessation treatment, either psychotherapeutic or pharmacologic, in the past 2 months.
  • Have history of any chronic medical or ophthalmologic diseases that may affect retinal function (including but not limited to diabetes, age related macular degeneration, retinitis pigmentosa, narrow angle glaucoma, or neurological conditions, such as Parkinson's disease) and that may affect ERG recordings.
  • The use of any prescription or over the counter medication that may affect the retinal dopamine system, including bromocriptine, antipsychotics, or anticholinergics.
  • If female, be currently pregnant, breastfeeding, or lack of effective birth control during 15 days prior to before the ERG.
  • The use of stimulant medications in the past 12 months.
  • Have a known hypersensitivity to stimulant medications
  • Have history of medical condition that contraindicates the use of methylphenidate, including any history of significant cardiovascular disease or abnormal screening EKG.
  • Is unable to understand or consent to study procedure, or is in the opinion of the study clinician to be unlikely to be able to tolerate the study treatment procedure.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

NYSPI, STARS Clinic, 3 Columbus Circle, suite 1408, 14th Floor

New York, New York, 10019, United States

Location

MeSH Terms

Conditions

Smoking CessationTobacco UseTobacco Use DisorderTobacco SmokingCigarette SmokingSmoking

Condition Hierarchy (Ancestors)

Health BehaviorBehaviorSubstance-Related DisordersChemically-Induced DisordersMental Disorders

Study Officials

  • Sean Luo, MD, PhD

    New York State Psychiatric Institute

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
interventional
Phase
not applicable
Allocation
NA
Masking
NONE
Purpose
BASIC SCIENCE
Intervention Model
SINGLE GROUP
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Research Psychiatrist

Study Record Dates

First Submitted

July 6, 2017

First Posted

July 11, 2017

Study Start

February 1, 2018

Primary Completion

November 1, 2022

Study Completion

December 1, 2022

Last Updated

January 5, 2023

Record last verified: 2023-01

Locations