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CompletedNCT00223236Updated Aug 11, 2014Results posted

Trial of Citicoline Therapy in Patients With Mania or Hypomania and Cocaine Abuse/Dependence

A Phase 3 interventional study of Citicoline and Placebo in Mania, Hypomania and Cocaine Abuse, sponsored by University of Texas Southwestern Medical Center. Completed at 1 site in United States. Open to participants aged 18 Years to 70 Years. Per ClinicalTrials.gov, last updated 2014-08-11.

Sponsored by University of Texas Southwestern Medical Center · Phase 3, Interventional, and Treatment

Phase
Phase 3
Study type
Interventional
Enrollment
44
Allocation
Randomized
Ages
18 Years to 70 Years
Sex
All
01

Study summary

The purpose of this research is to determine if a citicoline supplement is associated with a reduction in cocaine use and craving in patients with bipolar disorder (a mental disorder marked by alternating periods of mania and depression) or schizoaffective disorder/bipolar type (a psychotic disturbance in which there is a mixture of schizophrenic and manic-depressive symptoms) and cocaine abuse/dependence. This research also wants to explore if citicoline supplements are associated with greater improvement in symptoms of mania and on memory and cognition (the mental faculty of perception, reasoning, and judgement) in these patients.

Read the detailed description

Forty-four outpatients meeting the inclusion and exclusion criteria were enrolled after completing an Institutional Review Board (IRB)-approved informed consent process. Baseline evaluation included a medical and psychiatric history, structured diagnostic interview using Diagnostic and Statistical Manual (DSM)-IV criteria, mood assessment with the Inventory of Depressive Symptomatology-Self Report (IDS-SR), Young Mania Rating Scale (YMRS), and cognitive assessment with the Rey Auditory Verbal Learning Test (RAVLT). Alternate but equivalent versions of the RAVLT were used to minimize practice effects with repeated administration. Cocaine use was assessed at each biweekly visit with urine drug screens. Citicoline or placebo was given beginning at one tablet (500 mg)/day with an increase to two tablets (1000 mg/day) at week 2, three tablets (1500 mg/day) at week 4, and four tablets (2000 mg/day) at week 6. Doses were decreased, if needed, due to side effects.

02

Conditions studied

  • Mania
  • Hypomania
  • Cocaine Abuse
  • Cocaine Dependence
03

In context

Mania

97 studies on the registry are indexed under Mania; 10 are open to participants now.

This study's enrollment of 44 is below the median of 86 across 86 interventional studies indexed under Mania.

Browse Mania studies →

Lead sponsor

University of Texas Southwestern Medical Center is the lead sponsor of 990 studies on the registry; 201 are open to participants now.

Of its 135 completed or terminated interventional studies of FDA-regulated products, 100 (74%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 70 Years
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Men and women ages 18-70 years
  • History of mania or hypomania (bipolar I,II, not otherwise specified (NOS) or cyclothymic disorder or schizoaffective disorder/bipolar type)
  • Early recovery for cocaine abuse/dependence (between 7 days and 12 weeks of enrollment).
  • Any current mood state as indicated by structured diagnostic interview
  • No psychotropic medication changes within 7 days prior to enrollment.
  • English or Spanish speaking

Exclusion criteria

Exclusion Criteria:

  • Pregnant/nursing woman
  • Current or past citicoline therapy
  • Active suicidal or homicidal ideation with plan and intent
  • Dementia, mental retardation or other severe cognitive impairment
  • Severe or life threatening medical condition
05

Study design

Phase
Phase 3
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Quadruple (Participant, Care provider, Investigator, Outcomes assessor)
Enrollment
44 participants (actual)

Study arms

  • Active comparator
    Citicoline

    Citicoline is an over the counter supplement that may have neuroprotective properties and may have antidepressant effects.

    Drug: Citicoline

  • Placebo comparator
    Placebo

    Inactive ingredient matching the active medication in appearance

    Drug: Placebo

Interventions

  • DrugCiticoline

    Citicoline or placebo will be given beginning at one table (500mg)/day with an increase to two tablets (1000mg)/day at week 2, three tablets (1500mg)/day at week 4 and four tablets (2000mg)/day at week 6. Patients will remain on 2000mg/day through week 12. Doses will be decreased if needed due to side effects.

    Also known as: Cytidine-5'-diphosphocholine, CDP-choline

  • DrugPlacebo

    Placebo matching active medication in all other aspects.

    Also known as: Identical placebo

06

What researchers measure

Primary outcomes

  1. Cocaine Use Determined by Urine Analysis

    Urine drug screens were administered at each visit to detect cocaine in urine. If negative according to urine analysis, it is determined as no cocaine use and if positive, cocaine use. Percentage of participants with no cocaine detected in urine at exit is an outcome measuring treatment effectiveness. Exit week is defined as the last week of treatment. It varied between 2 week an 12 weeks with an average exit week of 10 week and 7 week for the citicoline treatment and placebo groups, respectively. Allowing unequal week of treatment period in measuring outcome enables us to include most participants due to a low retention rate in the end of the study period, 12 weeks.

    Time frame: Biweekly (visit) urine drug screens

Secondary outcomes

  1. Inventory of Depressive Symptomatology Self Report (IDS-SR).

    The IDS-SR is a 30 item self report used to assess the severity of depressive symptoms. The each item has a 4-likert scale, 0 to 3, with 3 representing the worst symptom. The total score of IDS-SR is calculated as a sum of each item score. The range of possible score is between 0 and 90, 0 as no symptom and 90 the worst symptom. The higher the score, the more severe the depression. Exit week is defined as the last week of treatment. It varied between 2 week an 12 weeks with an average exit week of 10 week and 7 week for the citicoline treatment and placebo groups, respectively. Allowing unequal week of treatment period in measuring outcome enables us to include most participants due to a low retention rate in the end of the tudy period, 12 weeks. The outcome was measured by change in scores between baseline and exit (exit - baseline).

    Time frame: Change in scores between baseline and exit (exit - baseline).

  2. Young Mania Rating Scale(YMRS).

    The YMRS questionnaire has 11 items with scale range 0 to 4 for 7 items and 0 to 8 for 4 items. 0=normal and and 4 or 8 =most abnormal. The total possible score is 0 to 60, 0 being no symptom and 60 the worst symptom. The higher the score, the worse the mania symptoms are. Exit week is defined as the last week of treatment. It varied between 2 week an 12 weeks with an average exit week of 10 week and 7 week for the citicoline treatment and placebo groups, respectively. Allowing unequal week of treatment period in measuring outcome enables us to include most participants due to a low retention rate in the end of the study period, 12 weeks. The outcome was measured by change in scores between baseline and exit (exit - baseline).

    Time frame: Baseline to exit (exit score - baseline score)

  3. Rey Auditory Verbal Learning Test(RAVLT)

    The RAVLT consists of 15 nouns read aloud for five consecutive trials with each trial followed by a free-recall trial. The total score is the total number of words recalled through the five trials. Normative RAVLT T-scores was used. the higher T score, the better memory. Exit week is defined as the last week of treatment. It varied between 2 week an 12 weeks with an average exit week of 10 week and 7 week for the citicoline treatment and placebo groups, respectively. Allowing unequal week of treatment period in measuring outcome enables us to include most participants due to a low retention rate in the end of the study period, 12 weeks. The outcome was measured by change in RAVLT T scores between baseline and exit (exit - baseline).

    Time frame: Change in T scores between baseline and exit (exitT score - baseline T score).

07

Results

Posted Aug 11, 2014
Limitations and caveats
Low retention rate in the end of study (12 weeks) leading to a potential underestimation of treatment effectiveness.

Participant flow

Patients were recruited from local community behavioral healthcare clinics and through advertising in local publications. The recruitment period was from 5/1/2004 to 4/12/2005.

Participant flow — Overall Study
MilestoneCiticolinePlacebo
Started1618
Completed94
Not completed714

Outcome measures

PrimaryCocaine Use Determined by Urine Analysis

Urine drug screens were administered at each visit to detect cocaine in urine. If negative according to urine analysis, it is determined as no cocaine use and if positive, cocaine use. Percentage of participants with no cocaine detected in urine at exit is an outcome measuring treatment effectiveness. Exit week is defined as the last week of treatment. It varied between 2 week an 12 weeks with an average exit week of 10 week and 7 week for the citicoline treatment and placebo groups, respectively. Allowing unequal week of treatment period in measuring outcome enables us to include most participants due to a low retention rate in the end of the study period, 12 weeks.

Time frame:
Biweekly (visit) urine drug screens
Reported as:
Number · percentage of participants no cocaine
Cocaine Use Determined by Urine Analysis
percentage of participants no cocaineCiticolinePlacebo
Cocaine Use Determined by Urine Analysis62.5050.00
Statistical analysis
  • Citicoline vs Placebo · Chi-squared · p = .4637df=1 n=34
SecondaryInventory of Depressive Symptomatology Self Report (IDS-SR).

The IDS-SR is a 30 item self report used to assess the severity of depressive symptoms. The each item has a 4-likert scale, 0 to 3, with 3 representing the worst symptom. The total score of IDS-SR is calculated as a sum of each item score. The range of possible score is between 0 and 90, 0 as no symptom and 90 the worst symptom. The higher the score, the more severe the depression. Exit week is defined as the last week of treatment. It varied between 2 week an 12 weeks with an average exit week of 10 week and 7 week for the citicoline treatment and placebo groups, respectively. Allowing unequal week of treatment period in measuring outcome enables us to include most participants due to a low retention rate in the end of the tudy period, 12 weeks. The outcome was measured by change in scores between baseline and exit (exit - baseline).

Time frame:
Change in scores between baseline and exit (exit - baseline).
Reported as:
Mean · units on scale
Inventory of Depressive Symptomatology Self Report (IDS-SR).
units on scaleCiticolinePlacebo
Inventory of Depressive Symptomatology Self Report (IDS-SR).-20.54 ± 14.56-11.89 ± 14.45
SecondaryYoung Mania Rating Scale(YMRS).

The YMRS questionnaire has 11 items with scale range 0 to 4 for 7 items and 0 to 8 for 4 items. 0=normal and and 4 or 8 =most abnormal. The total possible score is 0 to 60, 0 being no symptom and 60 the worst symptom. The higher the score, the worse the mania symptoms are. Exit week is defined as the last week of treatment. It varied between 2 week an 12 weeks with an average exit week of 10 week and 7 week for the citicoline treatment and placebo groups, respectively. Allowing unequal week of treatment period in measuring outcome enables us to include most participants due to a low retention rate in the end of the study period, 12 weeks. The outcome was measured by change in scores between baseline and exit (exit - baseline).

Time frame:
Baseline to exit (exit score - baseline score)
Reported as:
Mean · units on a scale
Young Mania Rating Scale(YMRS).
units on a scaleCiticolinePlacebo
Young Mania Rating Scale(YMRS).-2.00 ± 8.03-2.88 ± 5.68
SecondaryRey Auditory Verbal Learning Test(RAVLT)

The RAVLT consists of 15 nouns read aloud for five consecutive trials with each trial followed by a free-recall trial. The total score is the total number of words recalled through the five trials. Normative RAVLT T-scores was used. the higher T score, the better memory. Exit week is defined as the last week of treatment. It varied between 2 week an 12 weeks with an average exit week of 10 week and 7 week for the citicoline treatment and placebo groups, respectively. Allowing unequal week of treatment period in measuring outcome enables us to include most participants due to a low retention rate in the end of the study period, 12 weeks. The outcome was measured by change in RAVLT T scores between baseline and exit (exit - baseline).

Time frame:
Change in T scores between baseline and exit (exitT score - baseline T score).
Reported as:
Mean · T score
Rey Auditory Verbal Learning Test(RAVLT)
T scoreCiticolinePlacebo
Rey Auditory Verbal Learning Test(RAVLT)7.06 ± 11.793.14 ± 7.07

Adverse events

Non-serious events are listed at a 0% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Citicoline—1/23 (4.3%)0/23 (0%)
Placebo—2/21 (9.5%)0/21 (0%)
Most frequent serious events
Most frequent serious events
EventCiticolinePlacebo
Skin rashSkin and subcutaneous tissue disorders1/231/21
HypomaniaPsychiatric disorders0/231/21

Baseline characteristics

Number of paticipants who completed baseline assessment

Age, Categorical
Age, Categorical(Participants)CiticolinePlaceboTotal
<=18 years000
Between 18 and 65 years232144
>=65 years000
Age, Continuous
Age, Continuous(years)CiticolinePlaceboTotal
Mean42.1 ± 6.640.7 ± 8.041.4 ± 7.1
Sex: Female, Male
Sex: Female, Male(Participants)CiticolinePlaceboTotal
Female101121
Male131023
Region of Enrollment
Region of Enrollment(participants)CiticolinePlaceboTotal
United States232144
Inventory of Depressive Symptomatology
Inventory of Depressive Symptomatology(Units on a scale)CiticolinePlaceboTotal
Mean43.6 ± 10.638.7 ± 1341.26 ± 11.9
Young Mania Rating Scale
Young Mania Rating Scale(Units on a scale)CiticolinePlaceboTotal
Mean11.2 ± 4.911.5 ± 7.011.34 ± 5.89
Rey Auditory Verbal Learning Scale
Rey Auditory Verbal Learning Scale(T scores)CiticolinePlaceboTotal
Mean36.6 ± 10.036.0 ± 9.036.33 ± 9.47
cocaine used
cocaine used(participants)CiticolinePlaceboTotal
No cocaine used191938
Cocaine used415
Unknown011
08

Study locations

1 site
  • The UT Southwestern Medical Center of Dallas
    Dallas, Texas 75390-8849, United States
09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Aug 11, 2014, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT00223236
Lead sponsor
University of Texas Southwestern Medical Center
Responsible party
Sherwood Brown (professor, University of Texas Southwestern Medical Center) — Principal investigator
First posted
Sep 22, 2005
Start date
Jul 2010
Primary completion
May 2012
Completion
May 2012
Results posted
Aug 11, 2014
Last update
Aug 11, 2014

Study contacts

E. Sherwood Brown, PH.D., M.D.
principal investigator · The UT Southwestern Medical Center of Dallas

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

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