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.

Recruitment status

TERMINATED

Study phase

PHASE2

Target enrollment

11 participants

Primary outcome timeframe

Up to 6 hours post-dose on Day 14

Results posted on

2018-11-09

Participant Flow

Participant milestones

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

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

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 14

Population: 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

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 14

Population: 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

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 14

Population: 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

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 14

Population: 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

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 14

Population: 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

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 14

Population: 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

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 14

Population: 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

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 14

Population: 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

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 14

Population: 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

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 14

Population: 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

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

Serious events: 0 serious events
Other events: 4 other events
Deaths: 0 deaths

Placebo BID

Serious events: 1 serious events
Other events: 7 other events
Deaths: 0 deaths

Serious adverse events

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

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.

Phone: 1-800-672-6372

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