NCT01393457

Brief Summary

The purpose of this study is to evaluate treatments designed to improve cocaine treatment success by combining medications that target cocaine-related cognitive impairments.

Trial Health

87
On Track

Trial Health Score

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

Enrollment
119

participants targeted

Target at P50-P75 for phase_2

Timeline
Completed

Started Jun 2011

Longer than P75 for phase_2

Geographic Reach
1 country

1 active site

Status
completed

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

Study Start

First participant enrolled

June 1, 2011

Completed
1 month until next milestone

First Submitted

Initial submission to the registry

July 11, 2011

Completed
2 days until next milestone

First Posted

Study publicly available on registry

July 13, 2011

Completed
5.6 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

February 1, 2017

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

February 1, 2017

Completed
1.2 years until next milestone

Results Posted

Study results publicly available

March 29, 2018

Completed
Last Updated

March 29, 2018

Status Verified

March 1, 2018

Enrollment Period

5.7 years

First QC Date

July 11, 2011

Results QC Date

February 23, 2018

Last Update Submit

March 23, 2018

Conditions

Keywords

cocainecognitionmedicationtreatment

Outcome Measures

Primary Outcomes (1)

  • Cocaine Use Based on Urine Drug Screening

    The mean of the predicted probabilities (derived from generalized linear mixed models) of negative drug screens over all 10 weeks is reported, as per the analysis proposed in the protocol.

    10 weeks

Secondary Outcomes (1)

  • Number of Participants Who Completed the 10 Week Trial

    10 weeks

Study Arms (4)

ldopa + ropinirole low dose

ACTIVE COMPARATOR

levodopa/carbidopa 800/200 mg/d plus ropinirole 2 mg/d

Drug: levodopa/carbidopaDrug: Ropinirole 2 mg/d

ldopa + ropinirole high dose

ACTIVE COMPARATOR

levodopa/carbidopa 800/200 mg/d plus ropinirole 4 mg/d

Drug: levodopa/carbidopaDrug: Ropinirole 4 mg/d

ldopa

ACTIVE COMPARATOR

levodopa/carbidopa 800/200 mg/d

Drug: levodopa/carbidopa

placebo

PLACEBO COMPARATOR

Placebo

Drug: Placebo

Interventions

800/200 mg/d

Also known as: ldopa
ldopaldopa + ropinirole high doseldopa + ropinirole low dose

2 mg/d

Also known as: Requip
ldopa + ropinirole low dose

sugar pill

placebo

4 mg/d

Also known as: Requip
ldopa + ropinirole high dose

Eligibility Criteria

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

You may qualify if:

  • meet criteria for cocaine dependence
  • seeking treatment for cocaine dependence
  • be in acceptable health based on medical history and physical exam

You may not qualify if:

  • dependent on drugs other than cocaine, nicotine, marijuana
  • have a medical condition contraindicating treatment with study medications
  • having conditions of probation or parole requiring reports of drug use to officers of the court

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Behavioral and Biomedical Sciences Building

Houston, Texas, 77045, United States

Location

Related Publications (1)

  • Suchting R, Green CE, de Dios C, Vincent J, Moeller FG, Lane SD, Schmitz JM. Citalopram for treatment of cocaine use disorder: A Bayesian drop-the-loser randomized clinical trial. Drug Alcohol Depend. 2021 Nov 1;228:109054. doi: 10.1016/j.drugalcdep.2021.109054. Epub 2021 Sep 23.

MeSH Terms

Conditions

Cocaine-Related Disorders

Interventions

carbidopa, levodopa drug combinationropinirole

Condition Hierarchy (Ancestors)

Substance-Related DisordersChemically-Induced DisordersMental Disorders

Results Point of Contact

Title
Charles Green, PhD
Organization
The University of Texas Health Science Center at Houston

Publication Agreements

PI is Sponsor Employee
Yes

Study Design

Study Type
interventional
Phase
phase 2
Allocation
RANDOMIZED
Masking
QUADRUPLE
Who Masked
PARTICIPANT, CARE PROVIDER, INVESTIGATOR, OUTCOMES ASSESSOR
Purpose
TREATMENT
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Professor - Psychiatry

Study Record Dates

First Submitted

July 11, 2011

First Posted

July 13, 2011

Study Start

June 1, 2011

Primary Completion

February 1, 2017

Study Completion

February 1, 2017

Last Updated

March 29, 2018

Results First Posted

March 29, 2018

Record last verified: 2018-03

Locations