Trial Outcomes & Findings for Cognitive Enhancement as a Target for Cocaine Pharmacotherapy (NCT NCT01531153)

NCT ID: NCT01531153

Last Updated: 2018-10-26

Results Overview

Presented are the average number of urine samples positive for cocaine over 12 weeks. This outcome was corrected from the protocol registration when the study data were entered.

Recruitment status

COMPLETED

Study phase

NA

Target enrollment

93 participants

Primary outcome timeframe

12 weeks

Results posted on

2018-10-26

Participant Flow

Participant milestones

Participant milestones
Measure
Placebo
Sugar Pill will be compared with the active medication Galantamine Placebo: Placebo dose.
Galantamine 8mg
Comparing the active medication with the placebo medication to see if the self administration cocaine decreases. Galantamine: 8mg
Galantamine 16mg
Comparing the active medication with the placebo medication to see if the self administration cocaine decreases. Galantamine: 16mg
Overall Study
STARTED
32
31
30
Overall Study
COMPLETED
22
22
15
Overall Study
NOT COMPLETED
10
9
15

Reasons for withdrawal

Reasons for withdrawal
Measure
Placebo
Sugar Pill will be compared with the active medication Galantamine Placebo: Placebo dose.
Galantamine 8mg
Comparing the active medication with the placebo medication to see if the self administration cocaine decreases. Galantamine: 8mg
Galantamine 16mg
Comparing the active medication with the placebo medication to see if the self administration cocaine decreases. Galantamine: 16mg
Overall Study
Withdrawal by Subject
10
9
15

Baseline Characteristics

Cognitive Enhancement as a Target for Cocaine Pharmacotherapy

Baseline characteristics by cohort

Baseline characteristics by cohort
Measure
Placebo
n=32 Participants
Sugar Pill will be compared with the active medication Galantamine Placebo: Placebo dose.
Galantamine 8mg
n=31 Participants
Comparing the active medication with the placebo medication to see if the self administration cocaine decreases. Galantamine: 8mg
Galantamine 16mg
n=30 Participants
Comparing the active medication with the placebo medication to see if the self administration cocaine decreases. Galantamine: 16mg
Total
n=93 Participants
Total of all reporting groups
Age, Continuous
48.1 years
STANDARD_DEVIATION 7.2 • n=5 Participants
47.4 years
STANDARD_DEVIATION 6.8 • n=7 Participants
43.3 years
STANDARD_DEVIATION 8.3 • n=5 Participants
46.3 years
STANDARD_DEVIATION 7.6 • n=4 Participants
Sex: Female, Male
Female
12 Participants
n=5 Participants
9 Participants
n=7 Participants
9 Participants
n=5 Participants
30 Participants
n=4 Participants
Sex: Female, Male
Male
20 Participants
n=5 Participants
22 Participants
n=7 Participants
21 Participants
n=5 Participants
63 Participants
n=4 Participants
Race/Ethnicity, Customized
African American
25 Participants
n=5 Participants
21 Participants
n=7 Participants
16 Participants
n=5 Participants
62 Participants
n=4 Participants
Race/Ethnicity, Customized
Caucasian
3 Participants
n=5 Participants
4 Participants
n=7 Participants
5 Participants
n=5 Participants
12 Participants
n=4 Participants
Race/Ethnicity, Customized
Hispanic
3 Participants
n=5 Participants
3 Participants
n=7 Participants
9 Participants
n=5 Participants
15 Participants
n=4 Participants
Race/Ethnicity, Customized
Multiracial
1 Participants
n=5 Participants
3 Participants
n=7 Participants
0 Participants
n=5 Participants
4 Participants
n=4 Participants
Region of Enrollment
United States
32 Participants
n=5 Participants
31 Participants
n=7 Participants
30 Participants
n=5 Participants
93 Participants
n=4 Participants
Marital Status
Married
29 Participants
n=5 Participants
26 Participants
n=7 Participants
24 Participants
n=5 Participants
79 Participants
n=4 Participants
Marital Status
Not Married
3 Participants
n=5 Participants
5 Participants
n=7 Participants
6 Participants
n=5 Participants
14 Participants
n=4 Participants
Employment
Working
7 Participants
n=5 Participants
6 Participants
n=7 Participants
8 Participants
n=5 Participants
21 Participants
n=4 Participants
Employment
Not Working
24 Participants
n=5 Participants
25 Participants
n=7 Participants
20 Participants
n=5 Participants
69 Participants
n=4 Participants
Education
Some College or More
9 Participants
n=5 Participants
3 Participants
n=7 Participants
8 Participants
n=5 Participants
20 Participants
n=4 Participants
Education
High School
15 Participants
n=5 Participants
17 Participants
n=7 Participants
16 Participants
n=5 Participants
48 Participants
n=4 Participants
Education
Less than High School
8 Participants
n=5 Participants
11 Participants
n=7 Participants
6 Participants
n=5 Participants
25 Participants
n=4 Participants
Baseline Urine Positive
Cocaine
29 Participants
n=5 Participants
23 Participants
n=7 Participants
27 Participants
n=5 Participants
79 Participants
n=4 Participants
Baseline Urine Positive
Benzodiazepines
1 Participants
n=5 Participants
1 Participants
n=7 Participants
0 Participants
n=5 Participants
2 Participants
n=4 Participants
Baseline Urine Positive
Marijuana
4 Participants
n=5 Participants
10 Participants
n=7 Participants
4 Participants
n=5 Participants
18 Participants
n=4 Participants

PRIMARY outcome

Timeframe: 12 weeks

Presented are the average number of urine samples positive for cocaine over 12 weeks. This outcome was corrected from the protocol registration when the study data were entered.

Outcome measures

Outcome measures
Measure
Placebo
n=26 Participants
Sugar Pill will be compared with the active medication Galantamine Placebo: Placebo dose.
Galantamine 8mg
n=24 Participants
Comparing the active medication with the placebo medication to see if the self administration cocaine decreases. Galantamine: 8mg
Galantamine 16mg
n=22 Participants
Comparing the active medication with the placebo medication to see if the self administration cocaine decreases. Galantamine: 16mg
Urine Toxicology
16.1 average cocaine positive urine samples
Standard Deviation 8.0
17 average cocaine positive urine samples
Standard Deviation 9.4
14.9 average cocaine positive urine samples
Standard Deviation 8.5

SECONDARY outcome

Timeframe: once a day for up to two days over 12 Weeks

Population: Summary data for only those measured at each week are presented (per protocol).

Pulse

Outcome measures

Outcome measures
Measure
Placebo
n=26 Participants
Sugar Pill will be compared with the active medication Galantamine Placebo: Placebo dose.
Galantamine 8mg
n=24 Participants
Comparing the active medication with the placebo medication to see if the self administration cocaine decreases. Galantamine: 8mg
Galantamine 16mg
n=26 Participants
Comparing the active medication with the placebo medication to see if the self administration cocaine decreases. Galantamine: 16mg
Heart Rate
Week 1
78.85 beats per minute (bpm)
Standard Deviation 12.67
77.76 beats per minute (bpm)
Standard Deviation 9.24
75.01 beats per minute (bpm)
Standard Deviation 9.31
Heart Rate
Week 2
80.24 beats per minute (bpm)
Standard Deviation 13.61
79.74 beats per minute (bpm)
Standard Deviation 10.62
77.13 beats per minute (bpm)
Standard Deviation 10.62
Heart Rate
Week 3
78.68 beats per minute (bpm)
Standard Deviation 11.03
80.42 beats per minute (bpm)
Standard Deviation 8.15
74.98 beats per minute (bpm)
Standard Deviation 10.86
Heart Rate
Week 4
82.35 beats per minute (bpm)
Standard Deviation 11.18
77.83 beats per minute (bpm)
Standard Deviation 7.56
74.84 beats per minute (bpm)
Standard Deviation 8.52
Heart Rate
Week 5
80.91 beats per minute (bpm)
Standard Deviation 10.59
78.82 beats per minute (bpm)
Standard Deviation 9.25
76.72 beats per minute (bpm)
Standard Deviation 9.68
Heart Rate
Week 6
80.44 beats per minute (bpm)
Standard Deviation 11.17
75.55 beats per minute (bpm)
Standard Deviation 10.08
75.80 beats per minute (bpm)
Standard Deviation 10.08
Heart Rate
Week 7
78.65 beats per minute (bpm)
Standard Deviation 13.04
80.50 beats per minute (bpm)
Standard Deviation 9.03
76.48 beats per minute (bpm)
Standard Deviation 10.76
Heart Rate
Week 8
82.73 beats per minute (bpm)
Standard Deviation 12.34
77.46 beats per minute (bpm)
Standard Deviation 10.46
78.56 beats per minute (bpm)
Standard Deviation 10.02
Heart Rate
Week 9
80.59 beats per minute (bpm)
Standard Deviation 11.91
81.31 beats per minute (bpm)
Standard Deviation 9.81
78.09 beats per minute (bpm)
Standard Deviation 10.15
Heart Rate
Week 10
80.03 beats per minute (bpm)
Standard Deviation 13.02
81.28 beats per minute (bpm)
Standard Deviation 10.11
80.02 beats per minute (bpm)
Standard Deviation 12.00
Heart Rate
Week 11
82.90 beats per minute (bpm)
Standard Deviation 10.98
80.51 beats per minute (bpm)
Standard Deviation 11.16
80.02 beats per minute (bpm)
Standard Deviation 12.15
Heart Rate
Week 12
81.07 beats per minute (bpm)
Standard Deviation 10.49
76.33 beats per minute (bpm)
Standard Deviation 7.47
77.38 beats per minute (bpm)
Standard Deviation 12.60

SECONDARY outcome

Timeframe: 2 times a week for 12 weeks

Population: Data are reported for those that were measured at each assessment.

Blood Pressure is taken for safety reasons

Outcome measures

Outcome measures
Measure
Placebo
n=26 Participants
Sugar Pill will be compared with the active medication Galantamine Placebo: Placebo dose.
Galantamine 8mg
n=24 Participants
Comparing the active medication with the placebo medication to see if the self administration cocaine decreases. Galantamine: 8mg
Galantamine 16mg
n=26 Participants
Comparing the active medication with the placebo medication to see if the self administration cocaine decreases. Galantamine: 16mg
Blood Pressure- Systolic
Week 1 Time 1
133.62 mmHg
Standard Deviation 14.01
127.75 mmHg
Standard Deviation 11.69
132.21 mmHg
Standard Deviation 13.68
Blood Pressure- Systolic
Week 1 Time 2
132.04 mmHg
Standard Deviation 14.27
125.70 mmHg
Standard Deviation 16.11
136.68 mmHg
Standard Deviation 16.46
Blood Pressure- Systolic
Week 2 Time 1
132.92 mmHg
Standard Deviation 14.89
125.62 mmHg
Standard Deviation 12.58
130.69 mmHg
Standard Deviation 13.56
Blood Pressure- Systolic
Week 2 Time 2
128.46 mmHg
Standard Deviation 12.46
129.65 mmHg
Standard Deviation 14.76
130.21 mmHg
Standard Deviation 16.53
Blood Pressure- Systolic
Week 3 Time 1
132.29 mmHg
Standard Deviation 13.81
123.05 mmHg
Standard Deviation 13.19
130.58 mmHg
Standard Deviation 17.35
Blood Pressure- Systolic
Week 3 Time 2
129.14 mmHg
Standard Deviation 16.10
131.50 mmHg
Standard Deviation 15.47
129.00 mmHg
Standard Deviation 28.65
Blood Pressure- Systolic
Week 4 Time 1
129.42 mmHg
Standard Deviation 15.34
131.47 mmHg
Standard Deviation 13.86
131.46 mmHg
Standard Deviation 12.55
Blood Pressure- Systolic
Week 4 Time 2
130.22 mmHg
Standard Deviation 15.13
130.40 mmHg
Standard Deviation 12.87
131.00 mmHg
Standard Deviation 13.16
Blood Pressure- Systolic
Week 5 Time 1
132.30 mmHg
Standard Deviation 17.50
133.12 mmHg
Standard Deviation 14.80
136.58 mmHg
Standard Deviation 14.83
Blood Pressure- Systolic
Week 5 Time 2
134.67 mmHg
Standard Deviation 16.21
128.47 mmHg
Standard Deviation 19.13
133.27 mmHg
Standard Deviation 15.71
Blood Pressure- Systolic
Week 6 Time 1
131.04 mmHg
Standard Deviation 17.66
125.94 mmHg
Standard Deviation 15.28
132.26 mmHg
Standard Deviation 17.56
Blood Pressure- Systolic
Week 6 Time 2
135.23 mmHg
Standard Deviation 16.01
124.21 mmHg
Standard Deviation 10.53
132.96 mmHg
Standard Deviation 10.45
Blood Pressure- Systolic
Week 7 Time 1
133.68 mmHg
Standard Deviation 12.44
121.50 mmHg
Standard Deviation 15.84
128.96 mmHg
Standard Deviation 15.62
Blood Pressure- Systolic
Week 7 Time 2
133.82 mmHg
Standard Deviation 14.32
125.27 mmHg
Standard Deviation 15.40
129.86 mmHg
Standard Deviation 12.87
Blood Pressure- Systolic
Week 8 Time 1
136.43 mmHg
Standard Deviation 19.92
129.56 mmHg
Standard Deviation 15.18
134.09 mmHg
Standard Deviation 17.12
Blood Pressure- Systolic
Week 8 Time 2
132.95 mmHg
Standard Deviation 17.00
133.00 mmHg
Standard Deviation 15.96
134.76 mmHg
Standard Deviation 14.74
Blood Pressure- Systolic
Week 9 Time 1
140.95 mmHg
Standard Deviation 43.91
121.93 mmHg
Standard Deviation 13.05
135.32 mmHg
Standard Deviation 14.36
Blood Pressure- Systolic
Week 9 Time 2
130.29 mmHg
Standard Deviation 19.31
130.43 mmHg
Standard Deviation 14.48
133.50 mmHg
Standard Deviation 17.32
Blood Pressure- Systolic
Week 10 Time 1
136.95 mmHg
Standard Deviation 16.85
127.00 mmHg
Standard Deviation 14.41
131.05 mmHg
Standard Deviation 15.08
Blood Pressure- Systolic
Week 10 Time 2
132.52 mmHg
Standard Deviation 13.13
121.07 mmHg
Standard Deviation 19.86
128.00 mmHg
Standard Deviation 15.70
Blood Pressure- Systolic
Week 11 Time 1
133.86 mmHg
Standard Deviation 14.23
125.79 mmHg
Standard Deviation 18.65
134.95 mmHg
Standard Deviation 23.90
Blood Pressure- Systolic
Week 11 Time 2
129.73 mmHg
Standard Deviation 16.59
125.71 mmHg
Standard Deviation 12.13
136.18 mmHg
Standard Deviation 16.28
Blood Pressure- Systolic
Week 12 Time 1
131.57 mmHg
Standard Deviation 15.10
125.54 mmHg
Standard Deviation 15.64
140.32 mmHg
Standard Deviation 18.56
Blood Pressure- Systolic
Week 12 Time 2
129.67 mmHg
Standard Deviation 18.11
131.85 mmHg
Standard Deviation 14.28
134.62 mmHg
Standard Deviation 11.38

SECONDARY outcome

Timeframe: 2 times a week for 12 weeks

Population: Data are reported for those that were measured at each assessment.

Blood Pressure is taken for safety reasons

Outcome measures

Outcome measures
Measure
Placebo
n=26 Participants
Sugar Pill will be compared with the active medication Galantamine Placebo: Placebo dose.
Galantamine 8mg
n=24 Participants
Comparing the active medication with the placebo medication to see if the self administration cocaine decreases. Galantamine: 8mg
Galantamine 16mg
n=26 Participants
Comparing the active medication with the placebo medication to see if the self administration cocaine decreases. Galantamine: 16mg
Blood Pressure- Diastolic
Week 7 Time 1
79.05 mmHg
Standard Deviation 9.92
132.31 mmHg
Standard Deviation 200.73
79.83 mmHg
Standard Deviation 10.06
Blood Pressure- Diastolic
Week 1 Time 1
77.42 mmHg
Standard Deviation 11.61
78.75 mmHg
Standard Deviation 9.71
79.54 mmHg
Standard Deviation 7.55
Blood Pressure- Diastolic
Week 1 Time 2
79.13 mmHg
Standard Deviation 8.04
75.75 mmHg
Standard Deviation 11.80
80.88 mmHg
Standard Deviation 10.53
Blood Pressure- Diastolic
Week 2 Time 1
76.68 mmHg
Standard Deviation 10.48
76.48 mmHg
Standard Deviation 15.37
79.00 mmHg
Standard Deviation 10.99
Blood Pressure- Diastolic
Week 2 Time 2
77.46 mmHg
Standard Deviation 9.07
80.70 mmHg
Standard Deviation 11.85
79.42 mmHg
Standard Deviation 10.70
Blood Pressure- Diastolic
Week 3 Time 1
79.00 mmHg
Standard Deviation 9.04
78.79 mmHg
Standard Deviation 10.99
78.31 mmHg
Standard Deviation 10.39
Blood Pressure- Diastolic
Week 3 Time 2
74.59 mmHg
Standard Deviation 9.59
79.50 mmHg
Standard Deviation 11.15
78.35 mmHg
Standard Deviation 10.02
Blood Pressure- Diastolic
Week 4 Time 1
77.75 mmHg
Standard Deviation 10.61
81.88 mmHg
Standard Deviation 13.37
80.08 mmHg
Standard Deviation 8.67
Blood Pressure- Diastolic
Week 4 Time 2
76.09 mmHg
Standard Deviation 10.87
81.67 mmHg
Standard Deviation 12.12
80.13 mmHg
Standard Deviation 10.07
Blood Pressure- Diastolic
Week 5 Time 1
78.87 mmHg
Standard Deviation 11.29
81.41 mmHg
Standard Deviation 10.45
80.13 mmHg
Standard Deviation 8.27
Blood Pressure- Diastolic
Week 5 Time 2
76.48 mmHg
Standard Deviation 9.28
76.53 mmHg
Standard Deviation 12.17
80.36 mmHg
Standard Deviation 7.19
Blood Pressure- Diastolic
Week 6 Time 1
78.96 mmHg
Standard Deviation 9.15
80.63 mmHg
Standard Deviation 13.08
80.57 mmHg
Standard Deviation 10.12
Blood Pressure- Diastolic
Week 6 Time 2
77.77 mmHg
Standard Deviation 9.13
80.43 mmHg
Standard Deviation 10.45
83.22 mmHg
Standard Deviation 9.33
Blood Pressure- Diastolic
Week 7 Time 2
79.05 mmHg
Standard Deviation 10.82
80.00 mmHg
Standard Deviation 11.03
81.09 mmHg
Standard Deviation 10.92
Blood Pressure- Diastolic
Week 8 Time 1
80.43 mmHg
Standard Deviation 9.72
79.50 mmHg
Standard Deviation 8.63
81.82 mmHg
Standard Deviation 8.58
Blood Pressure- Diastolic
Week 8 Time 2
76.90 mmHg
Standard Deviation 10.23
82.71 mmHg
Standard Deviation 14.70
82.48 mmHg
Standard Deviation 8.61
Blood Pressure- Diastolic
Week 9 Time 1
102.64 mmHg
Standard Deviation 129.67
74.67 mmHg
Standard Deviation 12.82
81.27 mmHg
Standard Deviation 7.75
Blood Pressure- Diastolic
Week 9 Time 2
74.86 mmHg
Standard Deviation 9.24
83.50 mmHg
Standard Deviation 7.80
80.23 mmHg
Standard Deviation 9.89
Blood Pressure- Diastolic
Week 10 Time 1
78.32 mmHg
Standard Deviation 9.18
78.75 mmHg
Standard Deviation 12.87
81.71 mmHg
Standard Deviation 12.49
Blood Pressure- Diastolic
Week 10 Time 2
76.19 mmHg
Standard Deviation 7.49
77.57 mmHg
Standard Deviation 10.61
76.81 mmHg
Standard Deviation 8.02
Blood Pressure- Diastolic
Week 11 Time 1
80.95 mmHg
Standard Deviation 9.32
80.57 mmHg
Standard Deviation 12.18
85.05 mmHg
Standard Deviation 13.60
Blood Pressure- Diastolic
Week 11 Time 2
76.36 mmHg
Standard Deviation 13.17
75.36 mmHg
Standard Deviation 22.30
82.91 mmHg
Standard Deviation 12.50
Blood Pressure- Diastolic
Week 12 Time 1
79.76 mmHg
Standard Deviation 10.72
81.46 mmHg
Standard Deviation 8.92
84.00 mmHg
Standard Deviation 10.87
Blood Pressure- Diastolic
Week 12 Time 2
74.90 mmHg
Standard Deviation 12.48
80.15 mmHg
Standard Deviation 10.79
84.05 mmHg
Standard Deviation 9.60

SECONDARY outcome

Timeframe: Baseline and 12 Weeks

Population: complete case analysis at 12 weeks

RVIP is a computerized measure of attention. This is given at baseline and every 4 weeks over the course of the 12-week study. RVP A' (aka RVIP A PRIME): is a signal detection measure of target sensitivity (i.e., successful response to targets and withholding of responses to non-targets). Range of 0 to 1. Higher scores are better.

Outcome measures

Outcome measures
Measure
Placebo
n=17 Participants
Sugar Pill will be compared with the active medication Galantamine Placebo: Placebo dose.
Galantamine 8mg
n=12 Participants
Comparing the active medication with the placebo medication to see if the self administration cocaine decreases. Galantamine: 8mg
Galantamine 16mg
n=15 Participants
Comparing the active medication with the placebo medication to see if the self administration cocaine decreases. Galantamine: 16mg
CANTAB RVIP Measure: RVP A
Baseline
.86 units on a scale
Standard Deviation .06
.86 units on a scale
Standard Deviation .05
.85 units on a scale
Standard Deviation .08
CANTAB RVIP Measure: RVP A
Week 12
.88 units on a scale
Standard Deviation .07
.84 units on a scale
Standard Deviation .12
.87 units on a scale
Standard Deviation .08

SECONDARY outcome

Timeframe: Baseline and 12 Weeks

Population: complete case analysis at 12 weeks

RVIP is a computerized measure of attention. This is given at baseline and every 4 weeks over the course of the 12-week study. RVP B": A measure of response bias (i.e., bias towards under-responding (to targets) versus over-responding (i.e., to non-targets)) range from -1 to +1, respectively.

Outcome measures

Outcome measures
Measure
Placebo
n=17 Participants
Sugar Pill will be compared with the active medication Galantamine Placebo: Placebo dose.
Galantamine 8mg
n=12 Participants
Comparing the active medication with the placebo medication to see if the self administration cocaine decreases. Galantamine: 8mg
Galantamine 16mg
n=15 Participants
Comparing the active medication with the placebo medication to see if the self administration cocaine decreases. Galantamine: 16mg
CANTAB RVIP Measure: RVP B
Baseline
.77 units on a scale
Standard Deviation .42
.91 units on a scale
Standard Deviation .13
.77 units on a scale
Standard Deviation .22
CANTAB RVIP Measure: RVP B
Week 12
.77 units on a scale
Standard Deviation .42
.91 units on a scale
Standard Deviation .13
.77 units on a scale
Standard Deviation .22

SECONDARY outcome

Timeframe: Baseline and 12 Weeks

Population: complete case analysis at 12 weeks

RVIP is a computerized measure of attention. This is given at baseline and every 4 weeks over the course of the 12-week study. RVP FALSE ALARM is probability of false alarm. False alarms are responses to non-targets. Higher numbers are worse (i.e., could be seen as a measure of poor response inhibition). Scores range from 0-1 where 1 is the least desirable probablity.

Outcome measures

Outcome measures
Measure
Placebo
n=17 Participants
Sugar Pill will be compared with the active medication Galantamine Placebo: Placebo dose.
Galantamine 8mg
n=12 Participants
Comparing the active medication with the placebo medication to see if the self administration cocaine decreases. Galantamine: 8mg
Galantamine 16mg
n=15 Participants
Comparing the active medication with the placebo medication to see if the self administration cocaine decreases. Galantamine: 16mg
CANTAB RVIP Measure: RVP FALSE ALARM
Baseline
.04 units on a scale
Standard Deviation .08
.01 units on a scale
Standard Deviation .02
.03 units on a scale
Standard Deviation .04
CANTAB RVIP Measure: RVP FALSE ALARM
Week 12
.03 units on a scale
Standard Deviation .03
.03 units on a scale
Standard Deviation .04
.02 units on a scale
Standard Deviation .02

SECONDARY outcome

Timeframe: Baseline and 12 Weeks

Population: Complete cases analyzed at baseline and 12 weeks.

This is the CANTAB SST measure which evaluates response inhibition. Stop Signal Reaction Time (SSRT): The estimate of the length of time between the go stimulus and the stop stimulus at which the subject is able to successfully inhibit their response on 50% of the trials. Range of scores from 0 to 1500 (unit=milliseconds) and lower scores are 'better'.

Outcome measures

Outcome measures
Measure
Placebo
n=17 Participants
Sugar Pill will be compared with the active medication Galantamine Placebo: Placebo dose.
Galantamine 8mg
n=12 Participants
Comparing the active medication with the placebo medication to see if the self administration cocaine decreases. Galantamine: 8mg
Galantamine 16mg
n=15 Participants
Comparing the active medication with the placebo medication to see if the self administration cocaine decreases. Galantamine: 16mg
CANTAB SST- SSRT
Baseline
215.3 milliseconds
Standard Deviation 89.9
277.2 milliseconds
Standard Deviation 142.6
244.1 milliseconds
Standard Deviation 234.8
CANTAB SST- SSRT
12 Weeks
241.9 milliseconds
Standard Deviation 140.2
267.9 milliseconds
Standard Deviation 196.6
234.8 milliseconds
Standard Deviation 129.2

SECONDARY outcome

Timeframe: Baseline and 12 Weeks

Population: Complete cases analyzed at baseline and 12 weeks.

This is the CANTAB SST measure which evaluates response inhibition. Stop Signal Reaction Time (SSRT): The estimate of the length of time between the go stimulus and the stop stimulus at which the subject is able to successfully inhibit their response on 50% of the trials. Range of scores from 0 to 1500 (unit=milliseconds) and lower scores are 'better'. Median correct is the median of response times across 'go' trials where the subject has responded on the correct button (right or left).

Outcome measures

Outcome measures
Measure
Placebo
n=17 Participants
Sugar Pill will be compared with the active medication Galantamine Placebo: Placebo dose.
Galantamine 8mg
n=12 Participants
Comparing the active medication with the placebo medication to see if the self administration cocaine decreases. Galantamine: 8mg
Galantamine 16mg
n=15 Participants
Comparing the active medication with the placebo medication to see if the self administration cocaine decreases. Galantamine: 16mg
CANTAB SST- Median Correct
Baseline
706.3 milliseconds
Standard Deviation 260.0
619.7 milliseconds
Standard Deviation 285.7
680.0 milliseconds
Standard Deviation 631.5
CANTAB SST- Median Correct
12 Weeks
608.6 milliseconds
Standard Deviation 201.6
669.7 milliseconds
Standard Deviation 323.5
631.5 milliseconds
Standard Deviation 150.6

SECONDARY outcome

Timeframe: Baseline and 12 Weeks

Population: Complete cases analyzed at baseline and 12 weeks.

This is the CANTAB SST measure which evaluates response inhibition. Stop Signal Reaction Time (SSRT): The estimate of the length of time between the go stimulus and the stop stimulus at which the subject is able to successfully inhibit their response on 50% of the trials. Range of scores from 0 to 1500 (unit=milliseconds) and lower scores are 'better'. SD Correct is the standard deviation of response times across 'go' trials where the subject has responded on the correct button (right or left).

Outcome measures

Outcome measures
Measure
Placebo
n=17 Participants
Sugar Pill will be compared with the active medication Galantamine Placebo: Placebo dose.
Galantamine 8mg
n=12 Participants
Comparing the active medication with the placebo medication to see if the self administration cocaine decreases. Galantamine: 8mg
Galantamine 16mg
n=15 Participants
Comparing the active medication with the placebo medication to see if the self administration cocaine decreases. Galantamine: 16mg
CANTAB SST- SD Correct
Baseline
276.5 milliseconds
Standard Deviation 138.5
302.3 milliseconds
Standard Deviation 174.6
363.4 milliseconds
Standard Deviation 214.4
CANTAB SST- SD Correct
12 Weeks
337.8 milliseconds
Standard Deviation 262.9
410.6 milliseconds
Standard Deviation 276.1
492.6 milliseconds
Standard Deviation 530.5

SECONDARY outcome

Timeframe: weeks 0, 4, 8, 12, 16, 24, 36

Population: Data are reported for those that were assessed at each visit.

Drug Stroop Task is a computerized task which presents words either cocaine-related ('drug') words or non-drug-related ('neutral') words written in colored font. The subject is asked to press a button to indicate the color of the font as quickly and accurately as possible. The task is thought to measure attentional bias to drug-related stimuli. RT Correct Neutral is the mean response time to neutral trials where the subject pressed the correct color response.

Outcome measures

Outcome measures
Measure
Placebo
n=29 Participants
Sugar Pill will be compared with the active medication Galantamine Placebo: Placebo dose.
Galantamine 8mg
n=28 Participants
Comparing the active medication with the placebo medication to see if the self administration cocaine decreases. Galantamine: 8mg
Galantamine 16mg
n=28 Participants
Comparing the active medication with the placebo medication to see if the self administration cocaine decreases. Galantamine: 16mg
Stroop- RT Correct Neutral
Baseline
785.18 milliseconds
Standard Deviation 183.55
805.24 milliseconds
Standard Deviation 158.88
871.07 milliseconds
Standard Deviation 191.15
Stroop- RT Correct Neutral
Week 4
821.37 milliseconds
Standard Deviation 202.21
813.66 milliseconds
Standard Deviation 182.02
845.66 milliseconds
Standard Deviation 164.98
Stroop- RT Correct Neutral
Week 8
817.69 milliseconds
Standard Deviation 220.50
741.33 milliseconds
Standard Deviation 169.06
830.22 milliseconds
Standard Deviation 175.45
Stroop- RT Correct Neutral
Week 12
764.53 milliseconds
Standard Deviation 182.65
756.00 milliseconds
Standard Deviation 134.75
816.47 milliseconds
Standard Deviation 180.70
Stroop- RT Correct Neutral
Week 16
849.17 milliseconds
Standard Deviation 274.21
802.90 milliseconds
Standard Deviation 219.22
895.03 milliseconds
Standard Deviation 136.86
Stroop- RT Correct Neutral
Week 24
814.09 milliseconds
Standard Deviation 255.82
769.47 milliseconds
Standard Deviation 191.59
876.61 milliseconds
Standard Deviation 230.52
Stroop- RT Correct Neutral
Week 36
824.54 milliseconds
Standard Deviation 274.04
747.65 milliseconds
Standard Deviation 99.74
989.42 milliseconds
Standard Deviation 156.74

SECONDARY outcome

Timeframe: weeks 0, 4, 8, 12, 16, 24, 36

Population: Data are reported for those that were assessed at each visit.

Drug Stroop Task is a computerized task which presents words either cocaine-related ('drug') words or non-drug-related ('neutral') words written in colored font. The subject is asked to press a button to indicate the color of the font as quickly and accurately as possible. The task is thought to measure attentional bias to drug-related stimuli. RT Correct Drug is the mean response time to drug trials where the subject pressed the correct color response.

Outcome measures

Outcome measures
Measure
Placebo
n=29 Participants
Sugar Pill will be compared with the active medication Galantamine Placebo: Placebo dose.
Galantamine 8mg
n=28 Participants
Comparing the active medication with the placebo medication to see if the self administration cocaine decreases. Galantamine: 8mg
Galantamine 16mg
n=28 Participants
Comparing the active medication with the placebo medication to see if the self administration cocaine decreases. Galantamine: 16mg
Stroop- RT Correct Drug
Baseline
795.40 milliseconds
Standard Deviation 185.18
806.57 milliseconds
Standard Deviation 159.26
872.44 milliseconds
Standard Deviation 190.94
Stroop- RT Correct Drug
Week 4
825.09 milliseconds
Standard Deviation 203.50
815.97 milliseconds
Standard Deviation 182.08
846.59 milliseconds
Standard Deviation 165.73
Stroop- RT Correct Drug
Week 8
819.39 milliseconds
Standard Deviation 221.27
741.46 milliseconds
Standard Deviation 168.87
829.90 milliseconds
Standard Deviation 175.51
Stroop- RT Correct Drug
Week 12
766.90 milliseconds
Standard Deviation 181.53
755.87 milliseconds
Standard Deviation 135.32
817.91 milliseconds
Standard Deviation 180.55
Stroop- RT Correct Drug
Week 16
847.89 milliseconds
Standard Deviation 272.23
802.33 milliseconds
Standard Deviation 217.92
894.15 milliseconds
Standard Deviation 136.44
Stroop- RT Correct Drug
Week 24
812.65 milliseconds
Standard Deviation 254.72
768.93 milliseconds
Standard Deviation 189.97
874.56 milliseconds
Standard Deviation 229.66
Stroop- RT Correct Drug
Week 36
829.28 milliseconds
Standard Deviation 278.61
747.40 milliseconds
Standard Deviation 98.62
990.59 milliseconds
Standard Deviation 156.20

SECONDARY outcome

Timeframe: weeks 0, 4, 8, 12, 16, 24, 36

Population: Data are reported for those that were assessed at each visit.

Drug Stroop Task is a computerized task which presents words either cocaine-related ('drug') words or non-drug-related ('neutral') words written in colored font. The subject is asked to press a button to indicate the color of the font as quickly and accurately as possible. The task is thought to measure attentional bias to drug-related stimuli. Stroop Effect is difference in response time to drug versus neutral trials (i.e., RT Correct Drug - RT Correct Neutral). A larger stroop effect is 'worse' (thought to indicate more attentional bias to drug related stimuli).

Outcome measures

Outcome measures
Measure
Placebo
n=29 Participants
Sugar Pill will be compared with the active medication Galantamine Placebo: Placebo dose.
Galantamine 8mg
n=28 Participants
Comparing the active medication with the placebo medication to see if the self administration cocaine decreases. Galantamine: 8mg
Galantamine 16mg
n=28 Participants
Comparing the active medication with the placebo medication to see if the self administration cocaine decreases. Galantamine: 16mg
Stroop- Effect Drug Neutral Mean Correct
Baseline
.22 milliseconds
Standard Deviation 10.60
1.33 milliseconds
Standard Deviation 5.21
1.37 milliseconds
Standard Deviation 4.09
Stroop- Effect Drug Neutral Mean Correct
Week 4
3.71 milliseconds
Standard Deviation 8.26
2.31 milliseconds
Standard Deviation 5.83
0.92 milliseconds
Standard Deviation 3.08
Stroop- Effect Drug Neutral Mean Correct
Week 8
1.69 milliseconds
Standard Deviation 4.24
0.13 milliseconds
Standard Deviation 3.40
-0.12 milliseconds
Standard Deviation 3.05
Stroop- Effect Drug Neutral Mean Correct
Week 12
2.36 milliseconds
Standard Deviation 6.23
-0.12 milliseconds
Standard Deviation 3.05
1.43 milliseconds
Standard Deviation 3.81
Stroop- Effect Drug Neutral Mean Correct
Week 16
-1.27 milliseconds
Standard Deviation 4.02
-0.56 milliseconds
Standard Deviation 2.77
-0.87 milliseconds
Standard Deviation 4.50
Stroop- Effect Drug Neutral Mean Correct
Week 24
-1.44 milliseconds
Standard Deviation 3.31
-0.53 milliseconds
Standard Deviation 2.24
-2.05 milliseconds
Standard Deviation 3.04
Stroop- Effect Drug Neutral Mean Correct
Week 36
4.73 milliseconds
Standard Deviation 5.53
-0.25 milliseconds
Standard Deviation 1.56
1.17 milliseconds
Standard Deviation 4.11

SECONDARY outcome

Timeframe: Baseline and 12 Weeks

Population: Complete cases at 12 weeks were analyzed.

Digit Span Task description: Orally administered (not computerized) task where subjects are read-aloud lists of digits and asked to repeat them in the same order they heard them (Forward condition). Subjects are given a pair of lists for each digit length - and given a point for each list they get entirely correct. If they get at least one out of the two correct for that length, then the researcher gives them another one of a longer length (one digit longer). If they get both wrong at a given length- that task is ended. The task is then repeated with different digit lists to recall, but they are asked to repeat them or in the reverse order that they heard them (Backward condition). Longest Digit Span Forward (LDSF) is the longest digit span a participant gets correct, in the forward condition. Higher scores are better (Scale of 0 to 9).

Outcome measures

Outcome measures
Measure
Placebo
n=22 Participants
Sugar Pill will be compared with the active medication Galantamine Placebo: Placebo dose.
Galantamine 8mg
n=13 Participants
Comparing the active medication with the placebo medication to see if the self administration cocaine decreases. Galantamine: 8mg
Galantamine 16mg
n=17 Participants
Comparing the active medication with the placebo medication to see if the self administration cocaine decreases. Galantamine: 16mg
Digit Span- LDSF
Baseline
5.9 units on a scale
Standard Deviation 1.7
5.7 units on a scale
Standard Deviation 1.3
6.4 units on a scale
Standard Deviation 2.3
Digit Span- LDSF
12 Weeks
6.5 units on a scale
Standard Deviation 1.4
6.8 units on a scale
Standard Deviation 1.0
7.4 units on a scale
Standard Deviation 1.2

SECONDARY outcome

Timeframe: Baseline and 12 Weeks

Population: Complete cases at 12 weeks were analyzed.

Digit Span Task description: Orally administered (not computerized) task where subjects are read-aloud lists of digits and asked to repeat them in the same order they heard them (Forward condition). Subjects are given a pair of lists for each digit length - and given a point for each list they get entirely correct. If they get at least one out of the two correct for that length, then the researcher gives them another one of a longer length (one digit longer). If they get both wrong at a given length- that task is ended. The task is then repeated with different digit lists to recall, but they are asked to repeat them or in the reverse order that they heard them (Backward condition). Digit Span Forward (DSF) is the number of digit span trials participants got correct in the forward condition. Higher scores are better (Scale of 0 to 14).

Outcome measures

Outcome measures
Measure
Placebo
n=22 Participants
Sugar Pill will be compared with the active medication Galantamine Placebo: Placebo dose.
Galantamine 8mg
n=13 Participants
Comparing the active medication with the placebo medication to see if the self administration cocaine decreases. Galantamine: 8mg
Galantamine 16mg
n=19 Participants
Comparing the active medication with the placebo medication to see if the self administration cocaine decreases. Galantamine: 16mg
Digit Span- DSF
Baseline
9.3 units on a scale
Standard Deviation 3.0
9.9 units on a scale
Standard Deviation 2.3
10.7 units on a scale
Standard Deviation 2.1
Digit Span- DSF
12 Weeks
10.5 units on a scale
Standard Deviation 2.6
10.7 units on a scale
Standard Deviation 1.8
11.2 units on a scale
Standard Deviation 3.1

SECONDARY outcome

Timeframe: Baseline and 12 Weeks

Population: Complete cases at 12 weeks were analyzed.

Digit Span Task description: Orally administered (not computerized) task where subjects are read-aloud lists of digits and asked to repeat them in the same order they heard them (Forward condition). Subjects are given a pair of lists for each digit length - and given a point for each list they get entirely correct. If they get at least one out of the two correct for that length, then the researcher gives them another one of a longer length (one digit longer). If they get both wrong at a given length- that task is ended. The task is then repeated with different digit lists to recall, but they are asked to repeat them or in the reverse order that they heard them (Backward condition). Longest Digit Span Backward (LDSB) is the longest digit span participants got correct, in the backward condition. Higher scores are better (Scale of 0 to 8).

Outcome measures

Outcome measures
Measure
Placebo
n=22 Participants
Sugar Pill will be compared with the active medication Galantamine Placebo: Placebo dose.
Galantamine 8mg
n=13 Participants
Comparing the active medication with the placebo medication to see if the self administration cocaine decreases. Galantamine: 8mg
Galantamine 16mg
n=17 Participants
Comparing the active medication with the placebo medication to see if the self administration cocaine decreases. Galantamine: 16mg
Digit Span- LDSB
Baseline
4.2 units on a scale
Standard Deviation 1.7
3.2 units on a scale
Standard Deviation 0.9
4.0 units on a scale
Standard Deviation 1.7
Digit Span- LDSB
12 Weeks
4.2 units on a scale
Standard Deviation 1.2
4.3 units on a scale
Standard Deviation 1.4
3.9 units on a scale
Standard Deviation 1.6

SECONDARY outcome

Timeframe: Baseline and 12 Weeks

Population: Complete cases at 12 weeks were analyzed.

Digit Span Task description: Orally administered (not computerized) task where subjects are read-aloud lists of digits and asked to repeat them in the same order they heard them (Forward condition). Subjects are given a pair of lists for each digit length - and given a point for each list they get entirely correct. If they get at least one out of the two correct for that length, then the researcher gives them another one of a longer length (one digit longer). If they get both wrong at a given length- that task is ended. The task is then repeated with different digit lists to recall, but they are asked to repeat them or in the reverse order that they heard them (Backward condition). Digit Span Forward (DSB) is the number of digit span trials participants got correct in the backward condition. Higher scores are better (Scale of 0 to 14).

Outcome measures

Outcome measures
Measure
Placebo
n=22 Participants
Sugar Pill will be compared with the active medication Galantamine Placebo: Placebo dose.
Galantamine 8mg
n=13 Participants
Comparing the active medication with the placebo medication to see if the self administration cocaine decreases. Galantamine: 8mg
Galantamine 16mg
n=19 Participants
Comparing the active medication with the placebo medication to see if the self administration cocaine decreases. Galantamine: 16mg
Digit Span- DSB
Baseline
8.3 units on a scale
Standard Deviation 3.1
7.2 units on a scale
Standard Deviation 1.5
7.6 units on a scale
Standard Deviation 1.9
Digit Span- DSB
12 Weeks
8.3 units on a scale
Standard Deviation 2.1
8.5 units on a scale
Standard Deviation 2.7
7.3 units on a scale
Standard Deviation 2.7

Adverse Events

Placebo

Serious events: 0 serious events
Other events: 19 other events
Deaths: 0 deaths

Galantamine 8mg

Serious events: 0 serious events
Other events: 13 other events
Deaths: 0 deaths

Galantamine 16mg

Serious events: 0 serious events
Other events: 15 other events
Deaths: 0 deaths

Serious adverse events

Adverse event data not reported

Other adverse events

Other adverse events
Measure
Placebo
n=32 participants at risk
Sugar Pill will be compared with the active medication Galantamine Placebo: Placebo dose.
Galantamine 8mg
n=31 participants at risk
Comparing the active medication with the placebo medication to see if the self administration cocaine decreases. Galantamine: 8mg
Galantamine 16mg
n=30 participants at risk
Comparing the active medication with the placebo medication to see if the self administration cocaine decreases. Galantamine: 16mg
Psychiatric disorders
Confusion
3.1%
1/32
3.2%
1/31
6.7%
2/30
Psychiatric disorders
Hallucinations
0.00%
0/32
3.2%
1/31
3.3%
1/30
Psychiatric disorders
Delusions
0.00%
0/32
0.00%
0/31
6.7%
2/30
Psychiatric disorders
Agitation
15.6%
5/32
9.7%
3/31
13.3%
4/30
General disorders
Tiredness
21.9%
7/32
19.4%
6/31
26.7%
8/30
General disorders
Drowsiness
0.00%
0/32
3.2%
1/31
6.7%
2/30
General disorders
Insomnia
15.6%
5/32
3.2%
1/31
16.7%
5/30
General disorders
Nightmares
6.2%
2/32
0.00%
0/31
6.7%
2/30
Psychiatric disorders
Irresponsible Behavior
6.2%
2/32
0.00%
0/31
3.3%
1/30
Psychiatric disorders
Depression
0.00%
0/32
9.7%
3/31
10.0%
3/30
Psychiatric disorders
Anxiety
12.5%
4/32
9.7%
3/31
13.3%
4/30
Nervous system disorders
Tingling
3.1%
1/32
0.00%
0/31
0.00%
0/30
Gastrointestinal disorders
Cramps
6.2%
2/32
3.2%
1/31
0.00%
0/30
General disorders
Headache
21.9%
7/32
6.5%
2/31
6.7%
2/30
Eye disorders
Blurred Vision
3.1%
1/32
6.5%
2/31
10.0%
3/30
General disorders
Dry Mouth
6.2%
2/32
6.5%
2/31
6.7%
2/30
Skin and subcutaneous tissue disorders
Increased Perspiration
3.1%
1/32
3.2%
1/31
3.3%
1/30
Skin and subcutaneous tissue disorders
Flushing
0.00%
0/32
3.2%
1/31
0.00%
0/30
Gastrointestinal disorders
Constipation
6.2%
2/32
3.2%
1/31
3.3%
1/30
Gastrointestinal disorders
Diarrhea
3.1%
1/32
6.5%
2/31
16.7%
5/30
Renal and urinary disorders
Urinary Frequency
9.4%
3/32
16.1%
5/31
6.7%
2/30
General disorders
Dizziness
6.2%
2/32
3.2%
1/31
0.00%
0/30
Metabolism and nutrition disorders
Decreased Appetite
6.2%
2/32
0.00%
0/31
6.7%
2/30
Metabolism and nutrition disorders
Increased Appetite
6.2%
2/32
3.2%
1/31
0.00%
0/30
Gastrointestinal disorders
Heartburn
12.5%
4/32
0.00%
0/31
3.3%
1/30
Gastrointestinal disorders
Abdominal Pain
9.4%
3/32
3.2%
1/31
0.00%
0/30
Psychiatric disorders
Euphoria
0.00%
0/32
0.00%
0/31
3.3%
1/30
General disorders
Poor Concentration
3.1%
1/32
0.00%
0/31
0.00%
0/30
Nervous system disorders
Chills
3.1%
1/32
3.2%
1/31
3.3%
1/30
Psychiatric disorders
Increased Libido
3.1%
1/32
0.00%
0/31
3.3%
1/30
Respiratory, thoracic and mediastinal disorders
Shortness of Breath
3.1%
1/32
6.5%
2/31
3.3%
1/30
Gastrointestinal disorders
Nausea/Vomiting
6.2%
2/32
0.00%
0/31
6.7%
2/30
General disorders
Disturbed Concetration
0.00%
0/32
9.7%
3/31
10.0%
3/30
Psychiatric disorders
Decreased Libido
0.00%
0/32
0.00%
0/31
3.3%
1/30
Nervous system disorders
Fainting
3.1%
1/32
0.00%
0/31
0.00%
0/30

Additional Information

Dr. Mehmet Sofuoglu, Professor of Psychiatry; Director of VA New England Mental Illness Research, Ed

Yale University

Phone: (203) 937-4809

Results disclosure agreements

  • Principal investigator is a sponsor employee
  • Publication restrictions are in place