Trial Outcomes & Findings for Study of Preladenant for the Treatment of Antipsychotic Induced Movement Disorders in Participants With Schizophrenia (Study P04628) (NCT NCT00686699)
NCT ID: NCT00686699
Last Updated: 2018-11-09
Results Overview
The ESRS total score consists of 4 subscales: 1) a questionnaire of extrapyramidal symptoms (EPS) and drug-induced movement disorders (DIMD) over the previous 7 days (7 items scored as 0=Absent to 3=Severe; score range: 0-21), 2) an examination of Parkinsonism and akathisia (17 items scored as 0=None to 6=Severe; score range: 0-102), 3) an examination of dystonia (10 items scored as 0=Absent to 6=Most Severe; score range 0-60) and 4) an examination of dyskinesia (7 items scored as 0=None to 6=Severe; score range: 0-42). The ESRS total score could range from 0 to 225, with a lower score reflecting a better outcome. The lowest ESRS total score for each participant within the 6-hour range on Day 14 was analyzed.
TERMINATED
PHASE2
11 participants
Up to 6 hours post-dose on Day 14
2018-11-09
Participant Flow
Participant milestones
| Measure |
Preladenant 25 mg BID→Placebo BID
Participants received one preladenant 25 mg capsule twice daily (BID) for 14 days during the first treatment period and received one matching placebo capsule BID during the second treatment period. The 2 treatment periods were separated by a 3-week washout period.
|
Placebo BID→Preladenant 25 mg BID
Participants received one matching placebo capsule BID for 14 days during the first treatment period and received one preladenant 25 mg capsule during the second treatment period. The 2 treatment periods were separated by a 3-week washout period.
|
|---|---|---|
|
Treatment Period 1
STARTED
|
4
|
7
|
|
Treatment Period 1
COMPLETED
|
4
|
5
|
|
Treatment Period 1
NOT COMPLETED
|
0
|
2
|
|
Treatment Period 2
STARTED
|
4
|
5
|
|
Treatment Period 2
COMPLETED
|
4
|
5
|
|
Treatment Period 2
NOT COMPLETED
|
0
|
0
|
Reasons for withdrawal
| Measure |
Preladenant 25 mg BID→Placebo BID
Participants received one preladenant 25 mg capsule twice daily (BID) for 14 days during the first treatment period and received one matching placebo capsule BID during the second treatment period. The 2 treatment periods were separated by a 3-week washout period.
|
Placebo BID→Preladenant 25 mg BID
Participants received one matching placebo capsule BID for 14 days during the first treatment period and received one preladenant 25 mg capsule during the second treatment period. The 2 treatment periods were separated by a 3-week washout period.
|
|---|---|---|
|
Treatment Period 1
Adverse Event
|
0
|
2
|
Baseline Characteristics
Study of Preladenant for the Treatment of Antipsychotic Induced Movement Disorders in Participants With Schizophrenia (Study P04628)
Baseline characteristics by cohort
| Measure |
Preladenant 25 mg BID→Placebo BID
n=4 Participants
Participants received one preladenant 25 mg capsule BID for 14 days during the first treatment period and received one matching placebo capsule BID during the second treatment period. The 2 treatment periods were separated by a 3-week washout period.
|
Placebo BID→Preladenant 25 mg BID
n=7 Participants
Participants received one matching placebo capsule BID for 14 days during the first treatment period and received one preladenant 25 mg capsule during the second treatment period. The 2 treatment periods were separated by a 3-week washout period.
|
Total
n=11 Participants
Total of all reporting groups
|
|---|---|---|---|
|
Age, Continuous
|
33.8 Years
STANDARD_DEVIATION 8.5 • n=5 Participants
|
46.0 Years
STANDARD_DEVIATION 13.2 • n=7 Participants
|
41.5 Years
STANDARD_DEVIATION 12.8 • n=5 Participants
|
|
Sex: Female, Male
Female
|
1 Participants
n=5 Participants
|
3 Participants
n=7 Participants
|
4 Participants
n=5 Participants
|
|
Sex: Female, Male
Male
|
3 Participants
n=5 Participants
|
4 Participants
n=7 Participants
|
7 Participants
n=5 Participants
|
PRIMARY outcome
Timeframe: Up to 6 hours post-dose on Day 14Population: Consisted of all participants who received both treatments \& had Day 14 ESRS scores from both treatment periods.
The ESRS total score consists of 4 subscales: 1) a questionnaire of extrapyramidal symptoms (EPS) and drug-induced movement disorders (DIMD) over the previous 7 days (7 items scored as 0=Absent to 3=Severe; score range: 0-21), 2) an examination of Parkinsonism and akathisia (17 items scored as 0=None to 6=Severe; score range: 0-102), 3) an examination of dystonia (10 items scored as 0=Absent to 6=Most Severe; score range 0-60) and 4) an examination of dyskinesia (7 items scored as 0=None to 6=Severe; score range: 0-42). The ESRS total score could range from 0 to 225, with a lower score reflecting a better outcome. The lowest ESRS total score for each participant within the 6-hour range on Day 14 was analyzed.
Outcome measures
| Measure |
Preladenant 25 mg BID
n=9 Participants
Participants received one preladenant 25 mg capsule BID for 14 days.
|
Placebo BID
n=11 Participants
Participants received one matching placebo capsule BID for 14 days.
|
|---|---|---|
|
Lowest Extrapyramidal Symptom Rating Score (ESRS) Total Score Within the 6-hour Evaluation on Day 14 of Each Treatment Period
Day 14 (n=9, 9)
|
9.56 Score on a scale
Standard Deviation 6.64
|
10.89 Score on a scale
Standard Deviation 7.57
|
|
Lowest Extrapyramidal Symptom Rating Score (ESRS) Total Score Within the 6-hour Evaluation on Day 14 of Each Treatment Period
Baseline (n=9, 11)
|
14.22 Score on a scale
Standard Deviation 6.24
|
17.18 Score on a scale
Standard Deviation 11.03
|
SECONDARY outcome
Timeframe: 1, 2, 3, 4, 5, and 6 hours post-dose on Day 14Population: Consisted of all participants who had a Baseline value and at least one post-Baseline value at each time point for Day 14 ESRS scores from both treatment periods. Therefore Baseline includes only participants who had corresponding data on Day 14.
The ESRS total score consists of 4 subscales: 1) a questionnaire of EPS and DIMD over the previous 7 days (7 items scored as 0=Absent to 3=Severe; score range: 0-21), 2) an examination of Parkinsonism and akathisia (17 items scored as 0=None to 6=Severe; score range: 0-102), 3) an examination of dystonia (10 items scored as 0=Absent to 6=Most Severe; score range 0-60) and 4) an examination of dyskinesia (7 items scored as 0=None to 6=Severe; score range: 0-42). The ESRS total score could range from 0 to 225, with a lower score reflecting a better outcome. The mean ESRS total scores at Hours 1, 2, 3, 4, 5, and 6 on Day 14 were analyzed.
Outcome measures
| Measure |
Preladenant 25 mg BID
n=9 Participants
Participants received one preladenant 25 mg capsule BID for 14 days.
|
Placebo BID
n=9 Participants
Participants received one matching placebo capsule BID for 14 days.
|
|---|---|---|
|
Mean ESRS Total Scores Within the 6-hour Evaluation on Day 14 of Each Treatment Period
Baseline
|
21.0 Score on a scale
Standard Deviation 8.6
|
20.7 Score on a scale
Standard Deviation 15.8
|
|
Mean ESRS Total Scores Within the 6-hour Evaluation on Day 14 of Each Treatment Period
1 hour post-dose
|
14.3 Score on a scale
Standard Deviation 7.0
|
15.1 Score on a scale
Standard Deviation 10.4
|
|
Mean ESRS Total Scores Within the 6-hour Evaluation on Day 14 of Each Treatment Period
4 hours post-dose
|
12.8 Score on a scale
Standard Deviation 6.7
|
14.1 Score on a scale
Standard Deviation 10.8
|
|
Mean ESRS Total Scores Within the 6-hour Evaluation on Day 14 of Each Treatment Period
5 hours post-dose
|
12.3 Score on a scale
Standard Deviation 7.0
|
13.0 Score on a scale
Standard Deviation 9.5
|
|
Mean ESRS Total Scores Within the 6-hour Evaluation on Day 14 of Each Treatment Period
6 hours post-dose
|
11.8 Score on a scale
Standard Deviation 6.7
|
11.8 Score on a scale
Standard Deviation 7.3
|
|
Mean ESRS Total Scores Within the 6-hour Evaluation on Day 14 of Each Treatment Period
2 hours post-dose
|
15.3 Score on a scale
Standard Deviation 7.1
|
13.8 Score on a scale
Standard Deviation 11.2
|
|
Mean ESRS Total Scores Within the 6-hour Evaluation on Day 14 of Each Treatment Period
3 hours post-dose
|
12.8 Score on a scale
Standard Deviation 6.6
|
14.6 Score on a scale
Standard Deviation 11.5
|
SECONDARY outcome
Timeframe: Up to 6 hours post-dose on Day 14Population: Consisted of all participants who received both treatments \& had Day 14 ESRS scores from both treatment periods.
The ESRS consists of 4 subscales: 1) a questionnaire of EPS and DIMD over the previous 7 days (7 items scored as 0=Absent to 3=Severe; score range: 0-21), 2) an examination of Parkinsonism and akathisia (17 items scored as 0=None to 6=Severe; score range: 0-102), 3) an examination of dystonia (10 items scored as 0=Absent to 6=Most Severe; score range 0-60) and 4) an examination of dyskinesia (7 items scored as 0=None to 6=Severe; score range: 0-42). A lower subscale score reflects a better outcome. The lowest subscale score on Day 14 was analyzed.
Outcome measures
| Measure |
Preladenant 25 mg BID
n=9 Participants
Participants received one preladenant 25 mg capsule BID for 14 days.
|
Placebo BID
n=11 Participants
Participants received one matching placebo capsule BID for 14 days.
|
|---|---|---|
|
Lowest ESRS Part I Subscore: EPS and DIMD Within the 6-hour Evaluation on Day 14 of Each Treatment Period
Baseline (n=9, 11)
|
2.67 Score on a scale
Standard Deviation 1.41
|
3.00 Score on a scale
Standard Deviation 2.24
|
|
Lowest ESRS Part I Subscore: EPS and DIMD Within the 6-hour Evaluation on Day 14 of Each Treatment Period
Day 14 (n=9, 9)
|
1.89 Score on a scale
Standard Deviation 1.54
|
2.00 Score on a scale
Standard Deviation 1.50
|
SECONDARY outcome
Timeframe: 1, 2, 3, 4, 5, and 6 hours post-dose on Day 14Population: Consisted of all participants who had a Baseline value and at least one post-Baseline value at each time point for Day 14 ESRS scores from both treatment periods. Therefore Baseline includes only participants who had corresponding data on Day 14.
The ESRS consists of 4 subscales: 1) a questionnaire of EPS and DIMD over the previous 7 days (7 items scored as 0=Absent to 3=Severe; score range: 0-21), 2) an examination of Parkinsonism and akathisia (17 items scored as 0=None to 6=Severe; score range: 0-102), 3) an examination of dystonia (10 items scored as 0=Absent to 6=Most Severe; score range 0-60) and 4) an examination of dyskinesia (7 items scored as 0=None to 6=Severe; score range: 0-42). A lower subscale score reflects a better outcome. The mean subscores at Hours 1, 2, 3, 4, 5 and 6 on Day 14 were analyzed.
Outcome measures
| Measure |
Preladenant 25 mg BID
n=9 Participants
Participants received one preladenant 25 mg capsule BID for 14 days.
|
Placebo BID
n=9 Participants
Participants received one matching placebo capsule BID for 14 days.
|
|---|---|---|
|
Mean ESRS Part I Subscore: EPS and DIMD Within the 6-hour Evaluation on Day 14 of Each Treatment Period
3 hours post-dose
|
2.9 Score on a scale
Standard Deviation 2.0
|
2.7 Score on a scale
Standard Deviation 2.2
|
|
Mean ESRS Part I Subscore: EPS and DIMD Within the 6-hour Evaluation on Day 14 of Each Treatment Period
4 hours post-dose
|
2.7 Score on a scale
Standard Deviation 1.9
|
2.4 Score on a scale
Standard Deviation 2.2
|
|
Mean ESRS Part I Subscore: EPS and DIMD Within the 6-hour Evaluation on Day 14 of Each Treatment Period
Baseline
|
4.0 Score on a scale
Standard Deviation 1.9
|
4.1 Score on a scale
Standard Deviation 2.8
|
|
Mean ESRS Part I Subscore: EPS and DIMD Within the 6-hour Evaluation on Day 14 of Each Treatment Period
1 hour post-dose
|
2.9 Score on a scale
Standard Deviation 1.8
|
2.8 Score on a scale
Standard Deviation 2.4
|
|
Mean ESRS Part I Subscore: EPS and DIMD Within the 6-hour Evaluation on Day 14 of Each Treatment Period
2 hours post-dose
|
3.1 Score on a scale
Standard Deviation 1.8
|
2.3 Score on a scale
Standard Deviation 1.7
|
|
Mean ESRS Part I Subscore: EPS and DIMD Within the 6-hour Evaluation on Day 14 of Each Treatment Period
5 hours post-dose
|
2.6 Score on a scale
Standard Deviation 1.7
|
2.7 Score on a scale
Standard Deviation 2.2
|
|
Mean ESRS Part I Subscore: EPS and DIMD Within the 6-hour Evaluation on Day 14 of Each Treatment Period
6 hours post-dose
|
2.6 Score on a scale
Standard Deviation 1.7
|
2.2 Score on a scale
Standard Deviation 1.9
|
SECONDARY outcome
Timeframe: Up to 6 hours post-dose on Day 14Population: Consisted of all participants who received both treatments \& had Day 14 ESRS scores from both treatment periods.
The ESRS consists of 4 subscales: 1) a questionnaire of EPS and DIMD over the previous 7 days (7 items scored as 0=Absent to 3=Severe; score range: 0-21), 2) an examination of Parkinsonism and akathisia (17 items scored as 0=None to 6=Severe; score range: 0-102), 3) an examination of dystonia (10 items scored as 0=Absent to 6=Most Severe; score range 0-60) and 4) an examination of dyskinesia (7 items scored as 0=None to 6=Severe; score range: 0-42). A lower subscale score reflects a better outcome. The lowest subscale score on Day 14 was analyzed.
Outcome measures
| Measure |
Preladenant 25 mg BID
n=9 Participants
Participants received one preladenant 25 mg capsule BID for 14 days.
|
Placebo BID
n=11 Participants
Participants received one matching placebo capsule BID for 14 days.
|
|---|---|---|
|
Lowest ESRS Part II Subscore: Parkinsonism and Akathisia Within the 6-hour Evaluation on Day 14 of Each Treatment Period
Baseline (n=9, 11)
|
7.22 Score on a scale
Standard Deviation 5.04
|
8.91 Score on a scale
Standard Deviation 6.79
|
|
Lowest ESRS Part II Subscore: Parkinsonism and Akathisia Within the 6-hour Evaluation on Day 14 of Each Treatment Period
Day 14 (n=9, 9)
|
4.67 Score on a scale
Standard Deviation 4.24
|
5.67 Score on a scale
Standard Deviation 5.74
|
SECONDARY outcome
Timeframe: 1, 2, 3, 4, 5, and 6 hours post-dose on Day 14Population: Consisted of all participants who had a Baseline value and at least one post-Baseline value at each time point for Day 14 ESRS scores from both treatment periods. Therefore Baseline includes only participants who had corresponding data on Day 14.
The ESRS consists of 4 subscales: 1) a questionnaire of EPS and DIMD over the previous 7 days (7 items scored as 0=Absent to 3=Severe; score range: 0-21), 2) an examination of Parkinsonism and akathisia (17 items scored as 0=None to 6=Severe; score range: 0-102), 3) an examination of dystonia (10 items scored as 0=Absent to 6=Most Severe; score range 0-60) and 4) an examination of dyskinesia (7 items scored as 0=None to 6=Severe; score range: 0-42). A lower subscale score reflects a better outcome. The mean subscores at Hours 1, 2, 3, 4, 5 and 6 on Day 14 were analyzed.
Outcome measures
| Measure |
Preladenant 25 mg BID
n=9 Participants
Participants received one preladenant 25 mg capsule BID for 14 days.
|
Placebo BID
n=9 Participants
Participants received one matching placebo capsule BID for 14 days.
|
|---|---|---|
|
Mean ESRS Part II Subscores: Parkinsonism and Akathisia Within the 6-hour Evaluation on Day 14 of Each Treatment Period
5 hours post-dose
|
7.7 Score on a scale
Standard Deviation 5.2
|
7.1 Score on a scale
Standard Deviation 6.9
|
|
Mean ESRS Part II Subscores: Parkinsonism and Akathisia Within the 6-hour Evaluation on Day 14 of Each Treatment Period
6 hours post-dose
|
6.8 Score on a scale
Standard Deviation 4.7
|
6.7 Score on a scale
Standard Deviation 6.3
|
|
Mean ESRS Part II Subscores: Parkinsonism and Akathisia Within the 6-hour Evaluation on Day 14 of Each Treatment Period
Baseline
|
10.8 Score on a scale
Standard Deviation 5.9
|
9.4 Score on a scale
Standard Deviation 5.0
|
|
Mean ESRS Part II Subscores: Parkinsonism and Akathisia Within the 6-hour Evaluation on Day 14 of Each Treatment Period
1 hour post-dose
|
8.1 Score on a scale
Standard Deviation 5.6
|
8.1 Score on a scale
Standard Deviation 6.7
|
|
Mean ESRS Part II Subscores: Parkinsonism and Akathisia Within the 6-hour Evaluation on Day 14 of Each Treatment Period
2 hours post-dose
|
9.2 Score on a scale
Standard Deviation 5.2
|
7.4 Score on a scale
Standard Deviation 8.2
|
|
Mean ESRS Part II Subscores: Parkinsonism and Akathisia Within the 6-hour Evaluation on Day 14 of Each Treatment Period
3 hours post-dose
|
7.3 Score on a scale
Standard Deviation 5.0
|
8.0 Score on a scale
Standard Deviation 7.8
|
|
Mean ESRS Part II Subscores: Parkinsonism and Akathisia Within the 6-hour Evaluation on Day 14 of Each Treatment Period
4 hours post-dose
|
7.6 Score on a scale
Standard Deviation 4.6
|
7.8 Score on a scale
Standard Deviation 7.5
|
SECONDARY outcome
Timeframe: Up to 6 hours post-dose on Day 14Population: Consisted of all participants who received both treatments \& had Day 14 ESRS scores from both treatment periods.
The ESRS consists of 4 subscales: 1) a questionnaire of EPS and DIMD over the previous 7 days (7 items scored as 0=Absent to 3=Severe; score range: 0-21), 2) an examination of Parkinsonism and akathisia (17 items scored as 0=None to 6=Severe; score range: 0-102), 3) an examination of dystonia (10 items scored as 0=Absent to 6=Most Severe; score range 0-60) and 4) an examination of dyskinesia (7 items scored as 0=None to 6=Severe; score range: 0-42). A lower subscale score reflects a better outcome. The lowest subscale score on Day 14 was analyzed.
Outcome measures
| Measure |
Preladenant 25 mg BID
n=9 Participants
Participants received one preladenant 25 mg capsule BID for 14 days.
|
Placebo BID
n=11 Participants
Participants received one matching placebo capsule BID for 14 days.
|
|---|---|---|
|
Lowest ESRS Part III Subscore: Dystonia Within the 6-hour Evaluation on Day 14 of Each Treatment Period
Baseline (n=9, 11)
|
1.56 Score on a scale
Standard Deviation 2.79
|
2.09 Score on a scale
Standard Deviation 4.57
|
|
Lowest ESRS Part III Subscore: Dystonia Within the 6-hour Evaluation on Day 14 of Each Treatment Period
Day 14 (n=9, 9)
|
1.22 Score on a scale
Standard Deviation 1.99
|
1.22 Score on a scale
Standard Deviation 1.86
|
SECONDARY outcome
Timeframe: 1, 2, 3, 4, 5, and 6 hours post-dose on Day 14Population: Consisted of all participants who had a Baseline value and at least one post-Baseline value at each time point for Day 14 ESRS scores from both treatment periods. Therefore Baseline includes only participants who had corresponding data on Day 14.
The ESRS consists of 4 subscales: 1) a questionnaire of EPS and DIMD over the previous 7 days (7 items scored as 0=Absent to 3=Severe; score range: 0-21), 2) an examination of Parkinsonism and akathisia (17 items scored as 0=None to 6=Severe; score range: 0-102), 3) an examination of dystonia (10 items scored as 0=Absent to 6=Most Severe; score range 0-60) and 4) an examination of dyskinesia (7 items scored as 0=None to 6=Severe; score range: 0-42). A lower subscale score reflects a better outcome. The mean subscores at Hours 1, 2, 3, 4, 5 and 6 on Day 14 were analyzed.
Outcome measures
| Measure |
Preladenant 25 mg BID
n=9 Participants
Participants received one preladenant 25 mg capsule BID for 14 days.
|
Placebo BID
n=9 Participants
Participants received one matching placebo capsule BID for 14 days.
|
|---|---|---|
|
Mean ESRS Part III Subscores: Dystonia Within the 6-hour Evaluation on Day 14 of Each Treatment Period
1 hour post-dose
|
1.6 Score on a scale
Standard Deviation 2.8
|
2.2 Score on a scale
Standard Deviation 2.8
|
|
Mean ESRS Part III Subscores: Dystonia Within the 6-hour Evaluation on Day 14 of Each Treatment Period
4 hours post-dose
|
1.3 Score on a scale
Standard Deviation 2.2
|
2.0 Score on a scale
Standard Deviation 2.7
|
|
Mean ESRS Part III Subscores: Dystonia Within the 6-hour Evaluation on Day 14 of Each Treatment Period
5 hours post-dose
|
1.2 Score on a scale
Standard Deviation 2.0
|
1.8 Score on a scale
Standard Deviation 2.2
|
|
Mean ESRS Part III Subscores: Dystonia Within the 6-hour Evaluation on Day 14 of Each Treatment Period
6 hours post-dose
|
1.2 Score on a scale
Standard Deviation 2.0
|
1.3 Score on a scale
Standard Deviation 2.1
|
|
Mean ESRS Part III Subscores: Dystonia Within the 6-hour Evaluation on Day 14 of Each Treatment Period
Baseline
|
3.0 Score on a scale
Standard Deviation 4.4
|
4.2 Score on a scale
Standard Deviation 8.7
|
|
Mean ESRS Part III Subscores: Dystonia Within the 6-hour Evaluation on Day 14 of Each Treatment Period
2 hours post-dose
|
1.4 Score on a scale
Standard Deviation 2.5
|
2.0 Score on a scale
Standard Deviation 2.6
|
|
Mean ESRS Part III Subscores: Dystonia Within the 6-hour Evaluation on Day 14 of Each Treatment Period
3 hours post-dose
|
1.3 Score on a scale
Standard Deviation 2.2
|
2.1 Score on a scale
Standard Deviation 2.7
|
SECONDARY outcome
Timeframe: Up to 6 hours post-dose on Day 14Population: Consisted of all participants who received both treatments \& had Day 14 ESRS scores from both treatment periods.
The ESRS consists of 4 subscales: 1) a questionnaire of EPS and DIMD over the previous 7 days (7 items scored as 0=Absent to 3=Severe; score range: 0-21), 2) an examination of Parkinsonism and akathisia (17 items scored as 0=None to 6=Severe; score range: 0-102), 3) an examination of dystonia (10 items scored as 0=Absent to 6=Most Severe; score range 0-60) and 4) an examination of dyskinesia (7 items scored as 0=None to 6=Severe; score range: 0-42). A lower subscale score reflects a better outcome. The lowest subscale score on Day 14 was analyzed.
Outcome measures
| Measure |
Preladenant 25 mg BID
n=9 Participants
Participants received one preladenant 25 mg capsule BID for 14 days.
|
Placebo BID
n=11 Participants
Participants received one matching placebo capsule BID for 14 days.
|
|---|---|---|
|
Lowest ESRS Part IV Subscore: Dyskinesia Within the 6-hour Evaluation on Day 14 of Each Treatment Period
Baseline (n=9, 11)
|
2.00 Score on a scale
Standard Deviation 3.84
|
2.18 Score on a scale
Standard Deviation 4.12
|
|
Lowest ESRS Part IV Subscore: Dyskinesia Within the 6-hour Evaluation on Day 14 of Each Treatment Period
Day 14 (n=9, 9)
|
0.89 Score on a scale
Standard Deviation 2.32
|
1.22 Score on a scale
Standard Deviation 1.99
|
SECONDARY outcome
Timeframe: 1, 2, 3, 4, 5, and 6 hours post-dose on Day 14Population: Consisted of all participants who had a Baseline value and at least one post-Baseline value at each time point for Day 14 ESRS scores from both treatment periods. Therefore Baseline includes only participants who had corresponding data on Day 14.
The ESRS consists of 4 subscales: 1) a questionnaire of EPS and DIMD over the previous 7 days (7 items scored as 0=Absent to 3=Severe; score range: 0-21), 2) an examination of Parkinsonism and akathisia (17 items scored as 0=None to 6=Severe; score range: 0-102), 3) an examination of dystonia (10 items scored as 0=Absent to 6=Most Severe; score range 0-60) and 4) an examination of dyskinesia (7 items scored as 0=None to 6=Severe; score range: 0-42). A lower subscale score reflects a better outcome. The mean subscores at Hours 1, 2, 3, 4, 5 and 6 on Day 14 were analyzed.
Outcome measures
| Measure |
Preladenant 25 mg BID
n=9 Participants
Participants received one preladenant 25 mg capsule BID for 14 days.
|
Placebo BID
n=9 Participants
Participants received one matching placebo capsule BID for 14 days.
|
|---|---|---|
|
Mean ESRS Part IV Subscores: Dyskinesia Within the 6-hour Evaluation on Day 14 of Each Treatment Period
Baseline
|
3.2 Score on a scale
Standard Deviation 6.4
|
2.9 Score on a scale
Standard Deviation 6.5
|
|
Mean ESRS Part IV Subscores: Dyskinesia Within the 6-hour Evaluation on Day 14 of Each Treatment Period
3 hours post-dose
|
1.2 Score on a scale
Standard Deviation 2.6
|
1.8 Score on a scale
Standard Deviation 2.6
|
|
Mean ESRS Part IV Subscores: Dyskinesia Within the 6-hour Evaluation on Day 14 of Each Treatment Period
6 hours post-dose
|
1.2 Score on a scale
Standard Deviation 2.6
|
1.6 Score on a scale
Standard Deviation 2.4
|
|
Mean ESRS Part IV Subscores: Dyskinesia Within the 6-hour Evaluation on Day 14 of Each Treatment Period
1 hour post-dose
|
1.8 Score on a scale
Standard Deviation 3.6
|
2.0 Score on a scale
Standard Deviation 3.0
|
|
Mean ESRS Part IV Subscores: Dyskinesia Within the 6-hour Evaluation on Day 14 of Each Treatment Period
2 hours post-dose
|
1.6 Score on a scale
Standard Deviation 2.9
|
2.0 Score on a scale
Standard Deviation 3.0
|
|
Mean ESRS Part IV Subscores: Dyskinesia Within the 6-hour Evaluation on Day 14 of Each Treatment Period
4 hours post-dose
|
1.2 Score on a scale
Standard Deviation 2.6
|
1.9 Score on a scale
Standard Deviation 2.6
|
|
Mean ESRS Part IV Subscores: Dyskinesia Within the 6-hour Evaluation on Day 14 of Each Treatment Period
5 hours post-dose
|
0.9 Score on a scale
Standard Deviation 2.3
|
1.4 Score on a scale
Standard Deviation 2.1
|
Adverse Events
Preladenant 25 mg BID
Placebo BID
Serious adverse events
| Measure |
Preladenant 25 mg BID
n=9 participants at risk
Participants received one preladenant 25 mg capsule BID for 14 days.
|
Placebo BID
n=11 participants at risk
Participants received one matching placebo capsule BID for 14 days.
|
|---|---|---|
|
Gastrointestinal disorders
Diarrhoea
|
0.00%
0/9 • Up to 1 week after the last dose of study drug in a treatment period (Up to 8 weeks)
The safety population consisted of all participants who received at least one dose of study drug. Adverse events are reported based on the study drug a participant was taking at the time of the event.
|
9.1%
1/11 • Number of events 1 • Up to 1 week after the last dose of study drug in a treatment period (Up to 8 weeks)
The safety population consisted of all participants who received at least one dose of study drug. Adverse events are reported based on the study drug a participant was taking at the time of the event.
|
|
Gastrointestinal disorders
Nausea
|
0.00%
0/9 • Up to 1 week after the last dose of study drug in a treatment period (Up to 8 weeks)
The safety population consisted of all participants who received at least one dose of study drug. Adverse events are reported based on the study drug a participant was taking at the time of the event.
|
9.1%
1/11 • Number of events 1 • Up to 1 week after the last dose of study drug in a treatment period (Up to 8 weeks)
The safety population consisted of all participants who received at least one dose of study drug. Adverse events are reported based on the study drug a participant was taking at the time of the event.
|
|
Gastrointestinal disorders
Vomiting
|
0.00%
0/9 • Up to 1 week after the last dose of study drug in a treatment period (Up to 8 weeks)
The safety population consisted of all participants who received at least one dose of study drug. Adverse events are reported based on the study drug a participant was taking at the time of the event.
|
9.1%
1/11 • Number of events 1 • Up to 1 week after the last dose of study drug in a treatment period (Up to 8 weeks)
The safety population consisted of all participants who received at least one dose of study drug. Adverse events are reported based on the study drug a participant was taking at the time of the event.
|
|
Metabolism and nutrition disorders
Dehydration
|
0.00%
0/9 • Up to 1 week after the last dose of study drug in a treatment period (Up to 8 weeks)
The safety population consisted of all participants who received at least one dose of study drug. Adverse events are reported based on the study drug a participant was taking at the time of the event.
|
9.1%
1/11 • Number of events 1 • Up to 1 week after the last dose of study drug in a treatment period (Up to 8 weeks)
The safety population consisted of all participants who received at least one dose of study drug. Adverse events are reported based on the study drug a participant was taking at the time of the event.
|
Other adverse events
| Measure |
Preladenant 25 mg BID
n=9 participants at risk
Participants received one preladenant 25 mg capsule BID for 14 days.
|
Placebo BID
n=11 participants at risk
Participants received one matching placebo capsule BID for 14 days.
|
|---|---|---|
|
Cardiac disorders
Tachycardia
|
0.00%
0/9 • Up to 1 week after the last dose of study drug in a treatment period (Up to 8 weeks)
The safety population consisted of all participants who received at least one dose of study drug. Adverse events are reported based on the study drug a participant was taking at the time of the event.
|
9.1%
1/11 • Number of events 1 • Up to 1 week after the last dose of study drug in a treatment period (Up to 8 weeks)
The safety population consisted of all participants who received at least one dose of study drug. Adverse events are reported based on the study drug a participant was taking at the time of the event.
|
|
Gastrointestinal disorders
Constipation
|
22.2%
2/9 • Number of events 4 • Up to 1 week after the last dose of study drug in a treatment period (Up to 8 weeks)
The safety population consisted of all participants who received at least one dose of study drug. Adverse events are reported based on the study drug a participant was taking at the time of the event.
|
9.1%
1/11 • Number of events 1 • Up to 1 week after the last dose of study drug in a treatment period (Up to 8 weeks)
The safety population consisted of all participants who received at least one dose of study drug. Adverse events are reported based on the study drug a participant was taking at the time of the event.
|
|
General disorders
Fatigue
|
0.00%
0/9 • Up to 1 week after the last dose of study drug in a treatment period (Up to 8 weeks)
The safety population consisted of all participants who received at least one dose of study drug. Adverse events are reported based on the study drug a participant was taking at the time of the event.
|
18.2%
2/11 • Number of events 2 • Up to 1 week after the last dose of study drug in a treatment period (Up to 8 weeks)
The safety population consisted of all participants who received at least one dose of study drug. Adverse events are reported based on the study drug a participant was taking at the time of the event.
|
|
General disorders
Feeling hot
|
11.1%
1/9 • Number of events 1 • Up to 1 week after the last dose of study drug in a treatment period (Up to 8 weeks)
The safety population consisted of all participants who received at least one dose of study drug. Adverse events are reported based on the study drug a participant was taking at the time of the event.
|
9.1%
1/11 • Number of events 1 • Up to 1 week after the last dose of study drug in a treatment period (Up to 8 weeks)
The safety population consisted of all participants who received at least one dose of study drug. Adverse events are reported based on the study drug a participant was taking at the time of the event.
|
|
Infections and infestations
Nasopharyngitis
|
0.00%
0/9 • Up to 1 week after the last dose of study drug in a treatment period (Up to 8 weeks)
The safety population consisted of all participants who received at least one dose of study drug. Adverse events are reported based on the study drug a participant was taking at the time of the event.
|
9.1%
1/11 • Number of events 1 • Up to 1 week after the last dose of study drug in a treatment period (Up to 8 weeks)
The safety population consisted of all participants who received at least one dose of study drug. Adverse events are reported based on the study drug a participant was taking at the time of the event.
|
|
Infections and infestations
Rhinitis
|
0.00%
0/9 • Up to 1 week after the last dose of study drug in a treatment period (Up to 8 weeks)
The safety population consisted of all participants who received at least one dose of study drug. Adverse events are reported based on the study drug a participant was taking at the time of the event.
|
9.1%
1/11 • Number of events 1 • Up to 1 week after the last dose of study drug in a treatment period (Up to 8 weeks)
The safety population consisted of all participants who received at least one dose of study drug. Adverse events are reported based on the study drug a participant was taking at the time of the event.
|
|
Infections and infestations
Tracheitis
|
0.00%
0/9 • Up to 1 week after the last dose of study drug in a treatment period (Up to 8 weeks)
The safety population consisted of all participants who received at least one dose of study drug. Adverse events are reported based on the study drug a participant was taking at the time of the event.
|
9.1%
1/11 • Number of events 1 • Up to 1 week after the last dose of study drug in a treatment period (Up to 8 weeks)
The safety population consisted of all participants who received at least one dose of study drug. Adverse events are reported based on the study drug a participant was taking at the time of the event.
|
|
Musculoskeletal and connective tissue disorders
Pain in extremity
|
0.00%
0/9 • Up to 1 week after the last dose of study drug in a treatment period (Up to 8 weeks)
The safety population consisted of all participants who received at least one dose of study drug. Adverse events are reported based on the study drug a participant was taking at the time of the event.
|
9.1%
1/11 • Number of events 1 • Up to 1 week after the last dose of study drug in a treatment period (Up to 8 weeks)
The safety population consisted of all participants who received at least one dose of study drug. Adverse events are reported based on the study drug a participant was taking at the time of the event.
|
|
Nervous system disorders
Burning sensation
|
0.00%
0/9 • Up to 1 week after the last dose of study drug in a treatment period (Up to 8 weeks)
The safety population consisted of all participants who received at least one dose of study drug. Adverse events are reported based on the study drug a participant was taking at the time of the event.
|
9.1%
1/11 • Number of events 1 • Up to 1 week after the last dose of study drug in a treatment period (Up to 8 weeks)
The safety population consisted of all participants who received at least one dose of study drug. Adverse events are reported based on the study drug a participant was taking at the time of the event.
|
|
Psychiatric disorders
Anxiety
|
0.00%
0/9 • Up to 1 week after the last dose of study drug in a treatment period (Up to 8 weeks)
The safety population consisted of all participants who received at least one dose of study drug. Adverse events are reported based on the study drug a participant was taking at the time of the event.
|
9.1%
1/11 • Number of events 1 • Up to 1 week after the last dose of study drug in a treatment period (Up to 8 weeks)
The safety population consisted of all participants who received at least one dose of study drug. Adverse events are reported based on the study drug a participant was taking at the time of the event.
|
|
Psychiatric disorders
Crying
|
0.00%
0/9 • Up to 1 week after the last dose of study drug in a treatment period (Up to 8 weeks)
The safety population consisted of all participants who received at least one dose of study drug. Adverse events are reported based on the study drug a participant was taking at the time of the event.
|
9.1%
1/11 • Number of events 1 • Up to 1 week after the last dose of study drug in a treatment period (Up to 8 weeks)
The safety population consisted of all participants who received at least one dose of study drug. Adverse events are reported based on the study drug a participant was taking at the time of the event.
|
|
Psychiatric disorders
Depression
|
0.00%
0/9 • Up to 1 week after the last dose of study drug in a treatment period (Up to 8 weeks)
The safety population consisted of all participants who received at least one dose of study drug. Adverse events are reported based on the study drug a participant was taking at the time of the event.
|
9.1%
1/11 • Number of events 1 • Up to 1 week after the last dose of study drug in a treatment period (Up to 8 weeks)
The safety population consisted of all participants who received at least one dose of study drug. Adverse events are reported based on the study drug a participant was taking at the time of the event.
|
|
Psychiatric disorders
Fear
|
0.00%
0/9 • Up to 1 week after the last dose of study drug in a treatment period (Up to 8 weeks)
The safety population consisted of all participants who received at least one dose of study drug. Adverse events are reported based on the study drug a participant was taking at the time of the event.
|
9.1%
1/11 • Number of events 1 • Up to 1 week after the last dose of study drug in a treatment period (Up to 8 weeks)
The safety population consisted of all participants who received at least one dose of study drug. Adverse events are reported based on the study drug a participant was taking at the time of the event.
|
|
Psychiatric disorders
Insomnia
|
11.1%
1/9 • Number of events 1 • Up to 1 week after the last dose of study drug in a treatment period (Up to 8 weeks)
The safety population consisted of all participants who received at least one dose of study drug. Adverse events are reported based on the study drug a participant was taking at the time of the event.
|
9.1%
1/11 • Number of events 1 • Up to 1 week after the last dose of study drug in a treatment period (Up to 8 weeks)
The safety population consisted of all participants who received at least one dose of study drug. Adverse events are reported based on the study drug a participant was taking at the time of the event.
|
|
Psychiatric disorders
Sleep disorder
|
11.1%
1/9 • Number of events 1 • Up to 1 week after the last dose of study drug in a treatment period (Up to 8 weeks)
The safety population consisted of all participants who received at least one dose of study drug. Adverse events are reported based on the study drug a participant was taking at the time of the event.
|
0.00%
0/11 • Up to 1 week after the last dose of study drug in a treatment period (Up to 8 weeks)
The safety population consisted of all participants who received at least one dose of study drug. Adverse events are reported based on the study drug a participant was taking at the time of the event.
|
|
Psychiatric disorders
Suicidal ideation
|
0.00%
0/9 • Up to 1 week after the last dose of study drug in a treatment period (Up to 8 weeks)
The safety population consisted of all participants who received at least one dose of study drug. Adverse events are reported based on the study drug a participant was taking at the time of the event.
|
9.1%
1/11 • Number of events 1 • Up to 1 week after the last dose of study drug in a treatment period (Up to 8 weeks)
The safety population consisted of all participants who received at least one dose of study drug. Adverse events are reported based on the study drug a participant was taking at the time of the event.
|
|
Reproductive system and breast disorders
Breast discomfort
|
0.00%
0/9 • Up to 1 week after the last dose of study drug in a treatment period (Up to 8 weeks)
The safety population consisted of all participants who received at least one dose of study drug. Adverse events are reported based on the study drug a participant was taking at the time of the event.
|
9.1%
1/11 • Number of events 1 • Up to 1 week after the last dose of study drug in a treatment period (Up to 8 weeks)
The safety population consisted of all participants who received at least one dose of study drug. Adverse events are reported based on the study drug a participant was taking at the time of the event.
|
|
Respiratory, thoracic and mediastinal disorders
Pharyngolaryngeal pain
|
0.00%
0/9 • Up to 1 week after the last dose of study drug in a treatment period (Up to 8 weeks)
The safety population consisted of all participants who received at least one dose of study drug. Adverse events are reported based on the study drug a participant was taking at the time of the event.
|
9.1%
1/11 • Number of events 1 • Up to 1 week after the last dose of study drug in a treatment period (Up to 8 weeks)
The safety population consisted of all participants who received at least one dose of study drug. Adverse events are reported based on the study drug a participant was taking at the time of the event.
|
Additional Information
Senior Vice President, Global Clinical Development
Merck Sharp & Dohme Corp.
Results disclosure agreements
- Principal investigator is a sponsor employee The principal investigator agrees to provide to the sponsor 30 days prior to submission for publication or presentation, review copies of abstracts or manuscripts for publication that report any results of the study.
- Publication restrictions are in place
Restriction type: OTHER