Trial Outcomes & Findings for A Phase 2, to Evaluating the Safety and Efficacy of Pridopidine Vs Placebo for Symptomatic Treatment in Patients With Huntington's Disease (NCT NCT02006472)

NCT ID: NCT02006472

Last Updated: 2021-07-19

Results Overview

TMS was defined as the sum of all UHDRS motor domains ratings. The motor section of the UHDRS assesses motor features of Huntington's Disease (HD) with standardized ratings of oculo-motor function, dysarthria, chorea, dystonia, gait, and postural stability. Each of 15 assessments is rated on a scale of 0 (normal) to 4 (marked impairment) for a TMS range of 0-124. Negative change from baseline values indicate improvement.

Recruitment status

COMPLETED

Study phase

PHASE2

Target enrollment

408 participants

Primary outcome timeframe

26 weeks

Results posted on

2021-07-19

Participant Flow

A total of 492 patients were screened; of these, 408 were randomized. The main reason for not randomizing patients was noncompliance with the eligibility criteria.

Participant milestones

Participant milestones
Measure
Pridopidine 112.5 mg BID
Pridopidine given as hard capsules, twice daily Patients received a starting dose of pridopidine 22.5 mg and were during the first 4 weeks of treatment titrated to their randomized dose level. The randomized dose level was then to be maintained for the remainder of the treatment period through Week 52.
Placebo
Pridopidine matching placebo (hard capsules) Patients received a starting dose of placebo matching pridopidine 22.5 mg and were during the first 4 weeks of treatment titrated to the randomized dose level. The randomized dose level was then to be maintained for the remainder of the treatment period through Week 52.
Pridopidine 45 mg BID
Pridopidine given as hard capsules, twice daily Patients received a starting dose of pridopidine 22.5 mg and were during the first 4 weeks of treatment titrated to their randomized dose level. The randomized dose level was then to be maintained for the remainder of the treatment period through Week 52.
Pridopidine 67.5 mg BID
Pridopidine given as hard capsules, twice daily Patients received a starting dose of pridopidine 22.5 mg and were during the first 4 weeks of treatment titrated to their randomized dose level. The randomized dose level was then to be maintained for the remainder of the treatment period through Week 52.
Pridopidine 90 mg BID
Pridopidine given as hard capsules, twice daily Patients received a starting dose of pridopidine 22.5 mg and were during the first 4 weeks of treatment titrated to their randomized dose level. The randomized dose level was then to be maintained for the remainder of the treatment period through Week 52.
Period 1 (Through Week 26)
STARTED
82
82
81
82
81
Period 1 (Through Week 26)
ITT
82
82
81
82
81
Period 1 (Through Week 26)
FAS
81
81
75
79
81
Period 1 (Through Week 26)
Safety Set
82
82
81
82
81
Period 1 (Through Week 26)
COMPLETED
62
70
59
65
67
Period 1 (Through Week 26)
NOT COMPLETED
20
12
22
17
14
Period 2 (Through Week 52)
STARTED
46
57
49
54
56
Period 2 (Through Week 52)
Started Treatment in Period 2
46
57
49
52
56
Period 2 (Through Week 52)
COMPLETED
44
52
43
44
53
Period 2 (Through Week 52)
NOT COMPLETED
2
5
6
10
3

Reasons for withdrawal

Reasons for withdrawal
Measure
Pridopidine 112.5 mg BID
Pridopidine given as hard capsules, twice daily Patients received a starting dose of pridopidine 22.5 mg and were during the first 4 weeks of treatment titrated to their randomized dose level. The randomized dose level was then to be maintained for the remainder of the treatment period through Week 52.
Placebo
Pridopidine matching placebo (hard capsules) Patients received a starting dose of placebo matching pridopidine 22.5 mg and were during the first 4 weeks of treatment titrated to the randomized dose level. The randomized dose level was then to be maintained for the remainder of the treatment period through Week 52.
Pridopidine 45 mg BID
Pridopidine given as hard capsules, twice daily Patients received a starting dose of pridopidine 22.5 mg and were during the first 4 weeks of treatment titrated to their randomized dose level. The randomized dose level was then to be maintained for the remainder of the treatment period through Week 52.
Pridopidine 67.5 mg BID
Pridopidine given as hard capsules, twice daily Patients received a starting dose of pridopidine 22.5 mg and were during the first 4 weeks of treatment titrated to their randomized dose level. The randomized dose level was then to be maintained for the remainder of the treatment period through Week 52.
Pridopidine 90 mg BID
Pridopidine given as hard capsules, twice daily Patients received a starting dose of pridopidine 22.5 mg and were during the first 4 weeks of treatment titrated to their randomized dose level. The randomized dose level was then to be maintained for the remainder of the treatment period through Week 52.
Period 1 (Through Week 26)
Protocol Violation
0
1
1
1
1
Period 1 (Through Week 26)
Lack of Efficacy
0
0
0
1
0
Period 1 (Through Week 26)
Noncompliance
0
2
1
1
0
Period 1 (Through Week 26)
Other
3
1
5
0
2
Period 1 (Through Week 26)
Adverse Event
14
5
6
11
11
Period 1 (Through Week 26)
Withdrawal by Subject
3
3
9
3
0
Period 2 (Through Week 52)
Lack of Efficacy
1
1
0
0
1
Period 2 (Through Week 52)
Noncompliance
0
1
0
0
0
Period 2 (Through Week 52)
Adverse Event
1
1
4
5
1
Period 2 (Through Week 52)
Other
0
0
1
0
1
Period 2 (Through Week 52)
Not treated
0
0
0
2
0
Period 2 (Through Week 52)
Withdrawal by Subject
0
2
1
2
0
Period 2 (Through Week 52)
Sponsor decision
0
0
0
1
0

Baseline Characteristics

A Phase 2, to Evaluating the Safety and Efficacy of Pridopidine Vs Placebo for Symptomatic Treatment in Patients With Huntington's Disease

Baseline characteristics by cohort

Baseline characteristics by cohort
Measure
Placebo
n=82 Participants
Pridopidine matching placebo (hard capsules) Patients received a starting dose of placebo matching pridopidine 22.5 mg or matching placebo and were during the first 4 weeks of treatment titrated to their randomized dose level. The randomized dose level was then to be maintained for the remainder of the treatment period through Week 52.
Pridopidine 45 mg BID
n=81 Participants
Pridopidine given as hard capsules, twice daily Patients received a starting dose of pridopidine 22.5 mg and were during the first 4 weeks of treatment titrated to their randomized dose level. The randomized dose level was then to be maintained for the remainder of the treatment period through Week 52.
Pridopidine 67.5 mg BID
n=82 Participants
Pridopidine given as hard capsules, twice daily Patients received a starting dose of pridopidine 22.5 mg and were during the first 4 weeks of treatment titrated to their randomized dose level. The randomized dose level was then to be maintained for the remainder of the treatment period through Week 52.
Pridopidine 90 mg BID
n=81 Participants
Pridopidine given as hard capsules, twice daily Patients received a starting dose of pridopidine 22.5 mg and were during the first 4 weeks of treatment titrated to their randomized dose level. The randomized dose level was then to be maintained for the remainder of the treatment period through Week 52.
Pridopidine 112.5 mg BID
n=82 Participants
Pridopidine given as hard capsules, twice daily Patients received a starting dose of pridopidine 22.5 mg and were during the first 4 weeks of treatment titrated to their randomized dose level. The randomized dose level was then to be maintained for the remainder of the treatment period through Week 52.
Total
n=408 Participants
Total of all reporting groups
Age, Continuous
50.3 years
STANDARD_DEVIATION 11.34 • n=5 Participants
51.9 years
STANDARD_DEVIATION 11.75 • n=7 Participants
51.0 years
STANDARD_DEVIATION 11.83 • n=5 Participants
51.3 years
STANDARD_DEVIATION 12.69 • n=4 Participants
47.5 years
STANDARD_DEVIATION 11.40 • n=21 Participants
50.4 years
STANDARD_DEVIATION 11.85 • n=8 Participants
Sex: Female, Male
Female
40 Participants
n=5 Participants
40 Participants
n=7 Participants
41 Participants
n=5 Participants
43 Participants
n=4 Participants
39 Participants
n=21 Participants
203 Participants
n=8 Participants
Sex: Female, Male
Male
42 Participants
n=5 Participants
41 Participants
n=7 Participants
41 Participants
n=5 Participants
38 Participants
n=4 Participants
43 Participants
n=21 Participants
205 Participants
n=8 Participants
Race/Ethnicity, Customized
White
73 Participants
n=5 Participants
75 Participants
n=7 Participants
78 Participants
n=5 Participants
75 Participants
n=4 Participants
77 Participants
n=21 Participants
378 Participants
n=8 Participants
Race/Ethnicity, Customized
Black
0 Participants
n=5 Participants
0 Participants
n=7 Participants
1 Participants
n=5 Participants
0 Participants
n=4 Participants
0 Participants
n=21 Participants
1 Participants
n=8 Participants
Race/Ethnicity, Customized
Asian
1 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
1 Participants
n=4 Participants
0 Participants
n=21 Participants
2 Participants
n=8 Participants
Race/Ethnicity, Customized
Other
0 Participants
n=5 Participants
1 Participants
n=7 Participants
0 Participants
n=5 Participants
1 Participants
n=4 Participants
0 Participants
n=21 Participants
2 Participants
n=8 Participants
Race/Ethnicity, Customized
Missing
8 Participants
n=5 Participants
5 Participants
n=7 Participants
3 Participants
n=5 Participants
4 Participants
n=4 Participants
5 Participants
n=21 Participants
25 Participants
n=8 Participants
Use of neuroleptics
Yes
31 Participants
n=5 Participants
31 Participants
n=7 Participants
32 Participants
n=5 Participants
31 Participants
n=4 Participants
32 Participants
n=21 Participants
157 Participants
n=8 Participants
Use of neuroleptics
No
51 Participants
n=5 Participants
50 Participants
n=7 Participants
50 Participants
n=5 Participants
50 Participants
n=4 Participants
50 Participants
n=21 Participants
251 Participants
n=8 Participants
CYP2D6 genotype
Poor metaboliser
1 Participants
n=5 Participants
5 Participants
n=7 Participants
4 Participants
n=5 Participants
2 Participants
n=4 Participants
4 Participants
n=21 Participants
16 Participants
n=8 Participants
CYP2D6 genotype
Extensive metaboliser
72 Participants
n=5 Participants
70 Participants
n=7 Participants
70 Participants
n=5 Participants
74 Participants
n=4 Participants
69 Participants
n=21 Participants
355 Participants
n=8 Participants
CYP2D6 genotype
Intermediate metaboliser
8 Participants
n=5 Participants
5 Participants
n=7 Participants
8 Participants
n=5 Participants
5 Participants
n=4 Participants
9 Participants
n=21 Participants
35 Participants
n=8 Participants
CYP2D6 genotype
Ultra-rapid metaboliser
1 Participants
n=5 Participants
1 Participants
n=7 Participants
0 Participants
n=5 Participants
0 Participants
n=4 Participants
0 Participants
n=21 Participants
2 Participants
n=8 Participants
Number of Cytosine-Adenosine-Guanine (CAG) Repeats
44.4 Number of CAG repeats
STANDARD_DEVIATION 3.23 • n=5 Participants
44.1 Number of CAG repeats
STANDARD_DEVIATION 4.12 • n=7 Participants
45.0 Number of CAG repeats
STANDARD_DEVIATION 4.73 • n=5 Participants
44.5 Number of CAG repeats
STANDARD_DEVIATION 4.90 • n=4 Participants
45.3 Number of CAG repeats
STANDARD_DEVIATION 3.66 • n=21 Participants
44.7 Number of CAG repeats
STANDARD_DEVIATION 4.18 • n=8 Participants

PRIMARY outcome

Timeframe: 26 weeks

Population: Full analysis set (FAS) i.e. patients who received at least one dose of study drug and had at least one post-baseline efficacy assessment

TMS was defined as the sum of all UHDRS motor domains ratings. The motor section of the UHDRS assesses motor features of Huntington's Disease (HD) with standardized ratings of oculo-motor function, dysarthria, chorea, dystonia, gait, and postural stability. Each of 15 assessments is rated on a scale of 0 (normal) to 4 (marked impairment) for a TMS range of 0-124. Negative change from baseline values indicate improvement.

Outcome measures

Outcome measures
Measure
Placebo
n=81 Participants
Pridopidine matching placebo (hard capsules) Patients received a starting dose of placebo matching pridopidine 22.5 mg and were during the first 4 weeks of treatment titrated to their randomized dose level. The randomized dose level was then to be maintained for the remainder of the treatment period through Week 52.
Pridopidine 45 mg BID
n=75 Participants
Pridopidine given as hard capsules, twice daily Patients received a starting dose of pridopidine 22.5 mg and were during the first 4 weeks of treatment titrated to their randomized dose level. The randomized dose level was then to be maintained for the remainder of the treatment period through Week 52.
Pridopidine 67.5 mg BID
n=79 Participants
Pridopidine given as hard capsules, twice daily Patients received a starting dose of pridopidine 22.5 mg and were during the first 4 weeks of treatment titrated to their randomized dose level. The randomized dose level was then to be maintained for the remainder of the treatment period through Week 52.
Pridopidine 90 mg BID
n=81 Participants
Pridopidine given as hard capsules, twice daily Patients received a starting dose of pridopidine 22.5 mg and were during the first 4 weeks of treatment titrated to their randomized dose level. The randomized dose level was then to be maintained for the remainder of the treatment period through Week 52.
Pridopidine 112.5 mg BID
n=81 Participants
Pridopidine given as hard capsules, twice daily Patients received a starting dose of pridopidine 22.5 mg and were during the first 4 weeks of treatment titrated to their randomized dose level. The randomized dose level was then to be maintained for the remainder of the treatment period through Week 52.
Change From Baseline in Unified Huntington's Disease Rating Scale-Total Motor Score (UHDRS-TMS) at Week 26
-4.79 score on a scale
Standard Error 0.99
-3.37 score on a scale
Standard Error 1.05
-3.09 score on a scale
Standard Error 1.02
-4.13 score on a scale
Standard Error 1.00
-2.74 score on a scale
Standard Error 1.01

SECONDARY outcome

Timeframe: 52 weeks

Population: Safety Analysis set, i.e. patients who received at least one dose of study drug

Outcome measures

Outcome measures
Measure
Placebo
n=82 Participants
Pridopidine matching placebo (hard capsules) Patients received a starting dose of placebo matching pridopidine 22.5 mg and were during the first 4 weeks of treatment titrated to their randomized dose level. The randomized dose level was then to be maintained for the remainder of the treatment period through Week 52.
Pridopidine 45 mg BID
n=81 Participants
Pridopidine given as hard capsules, twice daily Patients received a starting dose of pridopidine 22.5 mg and were during the first 4 weeks of treatment titrated to their randomized dose level. The randomized dose level was then to be maintained for the remainder of the treatment period through Week 52.
Pridopidine 67.5 mg BID
n=82 Participants
Pridopidine given as hard capsules, twice daily Patients received a starting dose of pridopidine 22.5 mg and were during the first 4 weeks of treatment titrated to their randomized dose level. The randomized dose level was then to be maintained for the remainder of the treatment period through Week 52.
Pridopidine 90 mg BID
n=81 Participants
Pridopidine given as hard capsules, twice daily Patients received a starting dose of pridopidine 22.5 mg and were during the first 4 weeks of treatment titrated to their randomized dose level. The randomized dose level was then to be maintained for the remainder of the treatment period through Week 52.
Pridopidine 112.5 mg BID
n=82 Participants
Pridopidine given as hard capsules, twice daily Patients received a starting dose of pridopidine 22.5 mg and were during the first 4 weeks of treatment titrated to their randomized dose level. The randomized dose level was then to be maintained for the remainder of the treatment period through Week 52.
Number of Patients With Adverse Events
62 Participants
63 Participants
69 Participants
71 Participants
67 Participants

OTHER_PRE_SPECIFIED outcome

Timeframe: 52 weeks

Population: Full analysis set (FAS) i.e. patients who received at least one dose of study drug and had at least one post-baseline efficacy assessment

The TFC is one subscale of the Unified Huntington's Disease Rating Scale (UHDRS), comprising 5 functional domains associated with disability (occupation, finances, domestic chores, activities of daily living, and care level), with scores on each item ranging from 0 to either 2 or 3. The TFC total score is the sum of the 5 TFC items and can range from 0 to 13, with greater scores indicating higher functioning. Negative change from baseline indicates worsening.

Outcome measures

Outcome measures
Measure
Placebo
n=81 Participants
Pridopidine matching placebo (hard capsules) Patients received a starting dose of placebo matching pridopidine 22.5 mg and were during the first 4 weeks of treatment titrated to their randomized dose level. The randomized dose level was then to be maintained for the remainder of the treatment period through Week 52.
Pridopidine 45 mg BID
n=75 Participants
Pridopidine given as hard capsules, twice daily Patients received a starting dose of pridopidine 22.5 mg and were during the first 4 weeks of treatment titrated to their randomized dose level. The randomized dose level was then to be maintained for the remainder of the treatment period through Week 52.
Pridopidine 67.5 mg BID
n=78 Participants
Pridopidine given as hard capsules, twice daily Patients received a starting dose of pridopidine 22.5 mg and were during the first 4 weeks of treatment titrated to their randomized dose level. The randomized dose level was then to be maintained for the remainder of the treatment period through Week 52.
Pridopidine 90 mg BID
n=81 Participants
Pridopidine given as hard capsules, twice daily Patients received a starting dose of pridopidine 22.5 mg and were during the first 4 weeks of treatment titrated to their randomized dose level. The randomized dose level was then to be maintained for the remainder of the treatment period through Week 52.
Pridopidine 112.5 mg BID
n=81 Participants
Pridopidine given as hard capsules, twice daily Patients received a starting dose of pridopidine 22.5 mg and were during the first 4 weeks of treatment titrated to their randomized dose level. The randomized dose level was then to be maintained for the remainder of the treatment period through Week 52.
Change From Baseline in Total Functional Capacity (TFC) at Week 52
-0.83 score on a scale
Standard Error 0.20
0.04 score on a scale
Standard Error 0.22
-0.72 score on a scale
Standard Error 0.21
-0.65 score on a scale
Standard Error 0.20
-0.59 score on a scale
Standard Error 0.22

POST_HOC outcome

Timeframe: 52 weeks

Population: FAS i.e. pts receiving ≥1 dose of study drug and with ≥1 post-BL efficacy assessment; pts with early HD defined by BL TFC score ≥7. The study tested 4 pridopidine doses on TMS for 26 w. Due to a new understanding on pridopidine's mechanism of action (S1R agonist), the study was extended to 52w to assess TFC in all HD. A post-hoc analysis for the 45 mg bid dose was performed for TFC in early HD, and the dose was chosen for Phase 3.

The TFC is one subscale of the Unified Huntington's Disease Rating Scale (UHDRS), comprising 5 functional domains associated with disability (occupation, finances, domestic chores, activities of daily living, and care level), with scores on each item ranging from 0 to either 2 or 3. The TFC total score is the sum of the 5 TFC items and can range from 0 to 13, with greater scores indicating higher functioning. Negative change from baseline indicates worsening.

Outcome measures

Outcome measures
Measure
Placebo
n=62 Participants
Pridopidine matching placebo (hard capsules) Patients received a starting dose of placebo matching pridopidine 22.5 mg and were during the first 4 weeks of treatment titrated to their randomized dose level. The randomized dose level was then to be maintained for the remainder of the treatment period through Week 52.
Pridopidine 45 mg BID
n=59 Participants
Pridopidine given as hard capsules, twice daily Patients received a starting dose of pridopidine 22.5 mg and were during the first 4 weeks of treatment titrated to their randomized dose level. The randomized dose level was then to be maintained for the remainder of the treatment period through Week 52.
Pridopidine 67.5 mg BID
Pridopidine given as hard capsules, twice daily Patients received a starting dose of pridopidine 22.5 mg and were during the first 4 weeks of treatment titrated to their randomized dose level. The randomized dose level was then to be maintained for the remainder of the treatment period through Week 52.
Pridopidine 90 mg BID
Pridopidine given as hard capsules, twice daily Patients received a starting dose of pridopidine 22.5 mg and were during the first 4 weeks of treatment titrated to their randomized dose level. The randomized dose level was then to be maintained for the remainder of the treatment period through Week 52.
Pridopidine 112.5 mg BID
Pridopidine given as hard capsules, twice daily Patients received a starting dose of pridopidine 22.5 mg and were during the first 4 weeks of treatment titrated to their randomized dose level. The randomized dose level was then to be maintained for the remainder of the treatment period through Week 52.
Change in Total Functional Capacity (TFC) From Baseline in Patients With Early HD (Defined as Patients With TFC>=7)
-1.17 score on a scale
Standard Error 0.22
-0.01 score on a scale
Standard Error 0.23

POST_HOC outcome

Timeframe: 52 weeks

Population: FAS i.e. pts receiving ≥1 dose of study drug and with ≥1 post-BL efficacy assessment; pts with early HD defined by BL TFC score ≥7 who completed 52 weeks. The study tested 4 pridopidine doses on TMS for 26 w. Due to a new understanding on pridopidine's mechanism of action (S1R agonist), the study was extended to 52w to assess TFC in all HD. A post-hoc analysis for the 45 mg bid dose was performed for TFC in early HD, and the dose was chosen for Phase 3.

The TFC is one subscale of the Unified Huntington's Disease Rating Scale (UHDRS), comprising 5 functional domains associated with disability (occupation, finances, domestic chores, activities of daily living, and care level), with scores on each item ranging from 0 to either 2 or 3. The TFC total score is the sum of the 5 TFC items and can range from 0 to 13, with greater scores indicating higher functioning. Responder was defined as a TFC change to Week 52 of TFC\>=0.

Outcome measures

Outcome measures
Measure
Placebo
n=41 Participants
Pridopidine matching placebo (hard capsules) Patients received a starting dose of placebo matching pridopidine 22.5 mg and were during the first 4 weeks of treatment titrated to their randomized dose level. The randomized dose level was then to be maintained for the remainder of the treatment period through Week 52.
Pridopidine 45 mg BID
n=37 Participants
Pridopidine given as hard capsules, twice daily Patients received a starting dose of pridopidine 22.5 mg and were during the first 4 weeks of treatment titrated to their randomized dose level. The randomized dose level was then to be maintained for the remainder of the treatment period through Week 52.
Pridopidine 67.5 mg BID
Pridopidine given as hard capsules, twice daily Patients received a starting dose of pridopidine 22.5 mg and were during the first 4 weeks of treatment titrated to their randomized dose level. The randomized dose level was then to be maintained for the remainder of the treatment period through Week 52.
Pridopidine 90 mg BID
Pridopidine given as hard capsules, twice daily Patients received a starting dose of pridopidine 22.5 mg and were during the first 4 weeks of treatment titrated to their randomized dose level. The randomized dose level was then to be maintained for the remainder of the treatment period through Week 52.
Pridopidine 112.5 mg BID
Pridopidine given as hard capsules, twice daily Patients received a starting dose of pridopidine 22.5 mg and were during the first 4 weeks of treatment titrated to their randomized dose level. The randomized dose level was then to be maintained for the remainder of the treatment period through Week 52.
Total Functional Capacity Responder Rate in Early HD
20 Participants
30 Participants

POST_HOC outcome

Timeframe: 26 and 52 weeks

Population: FAS i.e. pts receiving \>=1 dose of study drug and with \>=1 post-BL efficacy assessment; pts with early HD defined by BL TFC score ≥7. The study tested 4 pridopidine doses on TMS for 26 w. Due to a new understanding on pridopidine's mechanism of action (S1R agonist), the study was extended to 52w to assess TFC in all HD. A post-hoc analysis for the 45 mg bid dose was performed for TFC in early HD, and the dose was chosen for Phase 3.

Q-motor assessments were based on the application of force transducers and 3-dimensional position sensors. The reported parameter is the Pro-Sup-Inter-Tap-interval-MN-Hand, measured in seconds. Positive change from baseline indicates worsening.

Outcome measures

Outcome measures
Measure
Placebo
n=62 Participants
Pridopidine matching placebo (hard capsules) Patients received a starting dose of placebo matching pridopidine 22.5 mg and were during the first 4 weeks of treatment titrated to their randomized dose level. The randomized dose level was then to be maintained for the remainder of the treatment period through Week 52.
Pridopidine 45 mg BID
n=59 Participants
Pridopidine given as hard capsules, twice daily Patients received a starting dose of pridopidine 22.5 mg and were during the first 4 weeks of treatment titrated to their randomized dose level. The randomized dose level was then to be maintained for the remainder of the treatment period through Week 52.
Pridopidine 67.5 mg BID
Pridopidine given as hard capsules, twice daily Patients received a starting dose of pridopidine 22.5 mg and were during the first 4 weeks of treatment titrated to their randomized dose level. The randomized dose level was then to be maintained for the remainder of the treatment period through Week 52.
Pridopidine 90 mg BID
Pridopidine given as hard capsules, twice daily Patients received a starting dose of pridopidine 22.5 mg and were during the first 4 weeks of treatment titrated to their randomized dose level. The randomized dose level was then to be maintained for the remainder of the treatment period through Week 52.
Pridopidine 112.5 mg BID
Pridopidine given as hard capsules, twice daily Patients received a starting dose of pridopidine 22.5 mg and were during the first 4 weeks of treatment titrated to their randomized dose level. The randomized dose level was then to be maintained for the remainder of the treatment period through Week 52.
Change From Baseline in Quantitative Motor (Q-motor) Measurements, Pro-Sup-Inter-Tap-interval-MN-Hand, Early HD
Change from baseline to Week 26
0.0247 seconds
Standard Error 0.0118
-0.0096 seconds
Standard Error 0.0110
Change From Baseline in Quantitative Motor (Q-motor) Measurements, Pro-Sup-Inter-Tap-interval-MN-Hand, Early HD
Change from baseline to Week 52
0.0447 seconds
Standard Error 0.0142
0.0003 seconds
Standard Error 0.0150

Adverse Events

Placebo

Serious events: 0 serious events
Other events: 45 other events
Deaths: 0 deaths

Pridopidine 45 mg BID

Serious events: 8 serious events
Other events: 49 other events
Deaths: 0 deaths

Pridopidine 67.5 mg BID

Serious events: 9 serious events
Other events: 63 other events
Deaths: 0 deaths

Pridopidine 90 mg BID

Serious events: 9 serious events
Other events: 57 other events
Deaths: 1 deaths

Pridopidine 112.5 mg BID

Serious events: 9 serious events
Other events: 53 other events
Deaths: 1 deaths

Serious adverse events

Serious adverse events
Measure
Placebo
n=82 participants at risk
Pridopidine matching placebo (hard capsules) Patients received a starting dose of pridopidine 22.5 mg or matching placebo and were during the first 4 weeks of treatment titrated to their randomised dose level. The randomised dose level was then to be maintained for the remainder of the treatment period through Week 26.
Pridopidine 45 mg BID
n=81 participants at risk
Pridopidine given as hard capsules, twice daily Patients received a starting dose of pridopidine 22.5 mg (or matching placebo) and were during the first 4 weeks of treatment titrated to their randomised dose level. The randomised dose level was then to be maintained for the remainder of the treatment period through Week 26.
Pridopidine 67.5 mg BID
n=82 participants at risk
Pridopidine given as hard capsules, twice daily Patients received a starting dose of pridopidine 22.5 mg (or matching placebo) and were during the first 4 weeks of treatment titrated to their randomised dose level. The randomised dose level was then to be maintained for the remainder of the treatment period through Week 26.
Pridopidine 90 mg BID
n=81 participants at risk
Pridopidine given as hard capsules, twice daily Patients received a starting dose of pridopidine 22.5 mg (or matching placebo) and were during the first 4 weeks of treatment titrated to their randomised dose level. The randomised dose level was then to be maintained for the remainder of the treatment period through Week 26.
Pridopidine 112.5 mg BID
n=82 participants at risk
Pridopidine given as hard capsules, twice daily Patients received a starting dose of pridopidine 22.5 mg (or matching placebo) and were during the first 4 weeks of treatment titrated to their randomised dose level. The randomised dose level was then to be maintained for the remainder of the treatment period through Week 26.
Injury, poisoning and procedural complications
Laceration
0.00%
0/82 • 52 weeks
1.2%
1/81 • Number of events 1 • 52 weeks
0.00%
0/82 • 52 weeks
0.00%
0/81 • 52 weeks
0.00%
0/82 • 52 weeks
Injury, poisoning and procedural complications
Humerus fracture
0.00%
0/82 • 52 weeks
1.2%
1/81 • Number of events 1 • 52 weeks
0.00%
0/82 • 52 weeks
0.00%
0/81 • 52 weeks
0.00%
0/82 • 52 weeks
Injury, poisoning and procedural complications
Hand fracture
0.00%
0/82 • 52 weeks
1.2%
1/81 • Number of events 1 • 52 weeks
0.00%
0/82 • 52 weeks
0.00%
0/81 • 52 weeks
0.00%
0/82 • 52 weeks
Injury, poisoning and procedural complications
Concussion
0.00%
0/82 • 52 weeks
1.2%
1/81 • Number of events 1 • 52 weeks
0.00%
0/82 • 52 weeks
0.00%
0/81 • 52 weeks
0.00%
0/82 • 52 weeks
Injury, poisoning and procedural complications
Skull fracture
0.00%
0/82 • 52 weeks
1.2%
1/81 • Number of events 1 • 52 weeks
0.00%
0/82 • 52 weeks
0.00%
0/81 • 52 weeks
0.00%
0/82 • 52 weeks
Injury, poisoning and procedural complications
Fall
0.00%
0/82 • 52 weeks
4.9%
4/81 • Number of events 5 • 52 weeks
0.00%
0/82 • 52 weeks
1.2%
1/81 • Number of events 1 • 52 weeks
0.00%
0/82 • 52 weeks
Injury, poisoning and procedural complications
Head injury
0.00%
0/82 • 52 weeks
2.5%
2/81 • Number of events 2 • 52 weeks
0.00%
0/82 • 52 weeks
0.00%
0/81 • 52 weeks
1.2%
1/82 • Number of events 1 • 52 weeks
Injury, poisoning and procedural complications
Intentional overdose
0.00%
0/82 • 52 weeks
0.00%
0/81 • 52 weeks
0.00%
0/82 • 52 weeks
0.00%
0/81 • 52 weeks
1.2%
1/82 • Number of events 1 • 52 weeks
Injury, poisoning and procedural complications
Face injury
0.00%
0/82 • 52 weeks
0.00%
0/81 • 52 weeks
0.00%
0/82 • 52 weeks
0.00%
0/81 • 52 weeks
1.2%
1/82 • Number of events 1 • 52 weeks
Investigations
Blood creatine phosphokinase increased
0.00%
0/82 • 52 weeks
1.2%
1/81 • Number of events 1 • 52 weeks
0.00%
0/82 • 52 weeks
0.00%
0/81 • 52 weeks
0.00%
0/82 • 52 weeks
Neoplasms benign, malignant and unspecified (incl cysts and polyps)
Colon cancer
0.00%
0/82 • 52 weeks
1.2%
1/81 • Number of events 1 • 52 weeks
0.00%
0/82 • 52 weeks
0.00%
0/81 • 52 weeks
0.00%
0/82 • 52 weeks
Neoplasms benign, malignant and unspecified (incl cysts and polyps)
Acute myeloid leukaemia
0.00%
0/82 • 52 weeks
1.2%
1/81 • Number of events 1 • 52 weeks
0.00%
0/82 • 52 weeks
0.00%
0/81 • 52 weeks
0.00%
0/82 • 52 weeks
Neoplasms benign, malignant and unspecified (incl cysts and polyps)
Adenocarcinoma of the colon
0.00%
0/82 • 52 weeks
0.00%
0/81 • 52 weeks
0.00%
0/82 • 52 weeks
1.2%
1/81 • Number of events 1 • 52 weeks
0.00%
0/82 • 52 weeks
Neoplasms benign, malignant and unspecified (incl cysts and polyps)
Breast cancer
0.00%
0/82 • 52 weeks
0.00%
0/81 • 52 weeks
0.00%
0/82 • 52 weeks
0.00%
0/81 • 52 weeks
1.2%
1/82 • Number of events 1 • 52 weeks
Cardiac disorders
Acute myocardial infarction
0.00%
0/82 • 52 weeks
0.00%
0/81 • 52 weeks
1.2%
1/82 • Number of events 1 • 52 weeks
0.00%
0/81 • 52 weeks
0.00%
0/82 • 52 weeks
Respiratory, thoracic and mediastinal disorders
Respiratory failure
0.00%
0/82 • 52 weeks
0.00%
0/81 • 52 weeks
1.2%
1/82 • Number of events 1 • 52 weeks
0.00%
0/81 • 52 weeks
0.00%
0/82 • 52 weeks
Respiratory, thoracic and mediastinal disorders
Pneumonia aspiration
0.00%
0/82 • 52 weeks
0.00%
0/81 • 52 weeks
1.2%
1/82 • Number of events 1 • 52 weeks
1.2%
1/81 • Number of events 1 • 52 weeks
1.2%
1/82 • Number of events 1 • 52 weeks
Nervous system disorders
Grand mal convulsion
0.00%
0/82 • 52 weeks
0.00%
0/81 • 52 weeks
1.2%
1/82 • Number of events 1 • 52 weeks
0.00%
0/81 • 52 weeks
0.00%
0/82 • 52 weeks
Nervous system disorders
Akathisia
0.00%
0/82 • 52 weeks
0.00%
0/81 • 52 weeks
1.2%
1/82 • Number of events 1 • 52 weeks
0.00%
0/81 • 52 weeks
0.00%
0/82 • 52 weeks
Nervous system disorders
Headache
0.00%
0/82 • 52 weeks
0.00%
0/81 • 52 weeks
0.00%
0/82 • 52 weeks
1.2%
1/81 • Number of events 1 • 52 weeks
0.00%
0/82 • 52 weeks
Nervous system disorders
Psychomotor hyperactivity
0.00%
0/82 • 52 weeks
0.00%
0/81 • 52 weeks
0.00%
0/82 • 52 weeks
0.00%
0/81 • 52 weeks
1.2%
1/82 • Number of events 1 • 52 weeks
Eye disorders
Optic ischaemic neuropathy
0.00%
0/82 • 52 weeks
0.00%
0/81 • 52 weeks
0.00%
0/82 • 52 weeks
0.00%
0/81 • 52 weeks
1.2%
1/82 • Number of events 1 • 52 weeks
Psychiatric disorders
Mood disorder due to a general medical condition
0.00%
0/82 • 52 weeks
0.00%
0/81 • 52 weeks
1.2%
1/82 • Number of events 1 • 52 weeks
0.00%
0/81 • 52 weeks
0.00%
0/82 • 52 weeks
Psychiatric disorders
Anxiety
0.00%
0/82 • 52 weeks
0.00%
0/81 • 52 weeks
1.2%
1/82 • Number of events 1 • 52 weeks
0.00%
0/81 • 52 weeks
0.00%
0/82 • 52 weeks
Psychiatric disorders
Suicide attempt
0.00%
0/82 • 52 weeks
1.2%
1/81 • Number of events 1 • 52 weeks
0.00%
0/82 • 52 weeks
1.2%
1/81 • Number of events 1 • 52 weeks
2.4%
2/82 • Number of events 2 • 52 weeks
Psychiatric disorders
Suicidal ideation
0.00%
0/82 • 52 weeks
0.00%
0/81 • 52 weeks
1.2%
1/82 • Number of events 1 • 52 weeks
1.2%
1/81 • Number of events 1 • 52 weeks
1.2%
1/82 • Number of events 1 • 52 weeks
Psychiatric disorders
Psychotic disorder
0.00%
0/82 • 52 weeks
1.2%
1/81 • Number of events 1 • 52 weeks
0.00%
0/82 • 52 weeks
0.00%
0/81 • 52 weeks
1.2%
1/82 • Number of events 1 • 52 weeks
Gastrointestinal disorders
Duodenal ulcer perforation
0.00%
0/82 • 52 weeks
0.00%
0/81 • 52 weeks
1.2%
1/82 • Number of events 1 • 52 weeks
0.00%
0/81 • 52 weeks
0.00%
0/82 • 52 weeks
Gastrointestinal disorders
Duodenitis
0.00%
0/82 • 52 weeks
0.00%
0/81 • 52 weeks
1.2%
1/82 • Number of events 1 • 52 weeks
0.00%
0/81 • 52 weeks
0.00%
0/82 • 52 weeks
Gastrointestinal disorders
Dysphagia
0.00%
0/82 • 52 weeks
0.00%
0/81 • 52 weeks
1.2%
1/82 • Number of events 1 • 52 weeks
1.2%
1/81 • Number of events 1 • 52 weeks
0.00%
0/82 • 52 weeks
Gastrointestinal disorders
Vomiting
0.00%
0/82 • 52 weeks
0.00%
0/81 • 52 weeks
0.00%
0/82 • 52 weeks
1.2%
1/81 • Number of events 1 • 52 weeks
0.00%
0/82 • 52 weeks
Gastrointestinal disorders
Abdominal pain
0.00%
0/82 • 52 weeks
0.00%
0/81 • 52 weeks
0.00%
0/82 • 52 weeks
1.2%
1/81 • Number of events 1 • 52 weeks
0.00%
0/82 • 52 weeks
Gastrointestinal disorders
Diarrhoea
0.00%
0/82 • 52 weeks
0.00%
0/81 • 52 weeks
0.00%
0/82 • 52 weeks
1.2%
1/81 • Number of events 1 • 52 weeks
0.00%
0/82 • 52 weeks
Gastrointestinal disorders
Abdominal pain upper
0.00%
0/82 • 52 weeks
0.00%
0/81 • 52 weeks
0.00%
0/82 • 52 weeks
0.00%
0/81 • 52 weeks
1.2%
1/82 • Number of events 1 • 52 weeks
Reproductive system and breast disorders
Uterine prolapse
0.00%
0/82 • 52 weeks
0.00%
0/81 • 52 weeks
1.2%
1/82 • Number of events 1 • 52 weeks
0.00%
0/81 • 52 weeks
0.00%
0/82 • 52 weeks
Reproductive system and breast disorders
Prostatitis
0.00%
0/82 • 52 weeks
0.00%
0/81 • 52 weeks
0.00%
0/82 • 52 weeks
1.2%
1/81 • Number of events 1 • 52 weeks
0.00%
0/82 • 52 weeks
Reproductive system and breast disorders
Urinary tetention
0.00%
0/82 • 52 weeks
0.00%
0/81 • 52 weeks
0.00%
0/82 • 52 weeks
1.2%
1/81 • Number of events 1 • 52 weeks
0.00%
0/82 • 52 weeks
Infections and infestations
Peritonitis
0.00%
0/82 • 52 weeks
0.00%
0/81 • 52 weeks
1.2%
1/82 • Number of events 1 • 52 weeks
0.00%
0/81 • 52 weeks
0.00%
0/82 • 52 weeks
Infections and infestations
Osteomyelitis
0.00%
0/82 • 52 weeks
0.00%
0/81 • 52 weeks
0.00%
0/82 • 52 weeks
1.2%
1/81 • Number of events 1 • 52 weeks
0.00%
0/82 • 52 weeks
Infections and infestations
Bronchopneumonia
0.00%
0/82 • 52 weeks
0.00%
0/81 • 52 weeks
0.00%
0/82 • 52 weeks
1.2%
1/81 • Number of events 1 • 52 weeks
0.00%
0/82 • 52 weeks
Infections and infestations
Urinary tract infection
0.00%
0/82 • 52 weeks
0.00%
0/81 • 52 weeks
0.00%
0/82 • 52 weeks
0.00%
0/81 • 52 weeks
1.2%
1/82 • Number of events 1 • 52 weeks

Other adverse events

Other adverse events
Measure
Placebo
n=82 participants at risk
Pridopidine matching placebo (hard capsules) Patients received a starting dose of pridopidine 22.5 mg or matching placebo and were during the first 4 weeks of treatment titrated to their randomised dose level. The randomised dose level was then to be maintained for the remainder of the treatment period through Week 26.
Pridopidine 45 mg BID
n=81 participants at risk
Pridopidine given as hard capsules, twice daily Patients received a starting dose of pridopidine 22.5 mg (or matching placebo) and were during the first 4 weeks of treatment titrated to their randomised dose level. The randomised dose level was then to be maintained for the remainder of the treatment period through Week 26.
Pridopidine 67.5 mg BID
n=82 participants at risk
Pridopidine given as hard capsules, twice daily Patients received a starting dose of pridopidine 22.5 mg (or matching placebo) and were during the first 4 weeks of treatment titrated to their randomised dose level. The randomised dose level was then to be maintained for the remainder of the treatment period through Week 26.
Pridopidine 90 mg BID
n=81 participants at risk
Pridopidine given as hard capsules, twice daily Patients received a starting dose of pridopidine 22.5 mg (or matching placebo) and were during the first 4 weeks of treatment titrated to their randomised dose level. The randomised dose level was then to be maintained for the remainder of the treatment period through Week 26.
Pridopidine 112.5 mg BID
n=82 participants at risk
Pridopidine given as hard capsules, twice daily Patients received a starting dose of pridopidine 22.5 mg (or matching placebo) and were during the first 4 weeks of treatment titrated to their randomised dose level. The randomised dose level was then to be maintained for the remainder of the treatment period through Week 26.
Vascular disorders
Hypertension
1.2%
1/82 • Number of events 1 • 52 weeks
0.00%
0/81 • 52 weeks
1.2%
1/82 • Number of events 1 • 52 weeks
6.2%
5/81 • Number of events 6 • 52 weeks
2.4%
2/82 • Number of events 2 • 52 weeks
Injury, poisoning and procedural complications
Fall
20.7%
17/82 • Number of events 31 • 52 weeks
19.8%
16/81 • Number of events 44 • 52 weeks
25.6%
21/82 • Number of events 31 • 52 weeks
16.0%
13/81 • Number of events 19 • 52 weeks
19.5%
16/82 • Number of events 42 • 52 weeks
Injury, poisoning and procedural complications
Contusion
3.7%
3/82 • Number of events 3 • 52 weeks
7.4%
6/81 • Number of events 7 • 52 weeks
7.3%
6/82 • Number of events 8 • 52 weeks
0.00%
0/81 • 52 weeks
3.7%
3/82 • Number of events 4 • 52 weeks
Investigations
Weight decreased
3.7%
3/82 • Number of events 3 • 52 weeks
4.9%
4/81 • Number of events 4 • 52 weeks
3.7%
3/82 • Number of events 3 • 52 weeks
3.7%
3/81 • Number of events 3 • 52 weeks
8.5%
7/82 • Number of events 7 • 52 weeks
Investigations
Creatinine renal clearance decreased
1.2%
1/82 • Number of events 1 • 52 weeks
6.2%
5/81 • Number of events 6 • 52 weeks
2.4%
2/82 • Number of events 2 • 52 weeks
3.7%
3/81 • Number of events 4 • 52 weeks
6.1%
5/82 • Number of events 8 • 52 weeks
Respiratory, thoracic and mediastinal disorders
Cough
2.4%
2/82 • Number of events 2 • 52 weeks
6.2%
5/81 • Number of events 5 • 52 weeks
2.4%
2/82 • Number of events 2 • 52 weeks
1.2%
1/81 • Number of events 1 • 52 weeks
6.1%
5/82 • Number of events 5 • 52 weeks
Nervous system disorders
Headache
9.8%
8/82 • Number of events 8 • 52 weeks
8.6%
7/81 • Number of events 18 • 52 weeks
8.5%
7/82 • Number of events 11 • 52 weeks
13.6%
11/81 • Number of events 19 • 52 weeks
9.8%
8/82 • Number of events 10 • 52 weeks
Nervous system disorders
Chorea
1.2%
1/82 • Number of events 1 • 52 weeks
4.9%
4/81 • Number of events 4 • 52 weeks
15.9%
13/82 • Number of events 15 • 52 weeks
3.7%
3/81 • Number of events 3 • 52 weeks
8.5%
7/82 • Number of events 8 • 52 weeks
Nervous system disorders
Dizziness
2.4%
2/82 • Number of events 2 • 52 weeks
2.5%
2/81 • Number of events 2 • 52 weeks
7.3%
6/82 • Number of events 12 • 52 weeks
6.2%
5/81 • Number of events 5 • 52 weeks
7.3%
6/82 • Number of events 8 • 52 weeks
Nervous system disorders
Balance disorder
3.7%
3/82 • Number of events 3 • 52 weeks
2.5%
2/81 • Number of events 3 • 52 weeks
6.1%
5/82 • Number of events 6 • 52 weeks
1.2%
1/81 • Number of events 1 • 52 weeks
3.7%
3/82 • Number of events 3 • 52 weeks
General disorders
Fatigue
8.5%
7/82 • Number of events 10 • 52 weeks
3.7%
3/81 • Number of events 3 • 52 weeks
7.3%
6/82 • Number of events 6 • 52 weeks
8.6%
7/81 • Number of events 8 • 52 weeks
6.1%
5/82 • Number of events 5 • 52 weeks
Psychiatric disorders
Anxiety
2.4%
2/82 • Number of events 2 • 52 weeks
7.4%
6/81 • Number of events 6 • 52 weeks
7.3%
6/82 • Number of events 6 • 52 weeks
8.6%
7/81 • Number of events 8 • 52 weeks
6.1%
5/82 • Number of events 5 • 52 weeks
Psychiatric disorders
Suicidal ideation
0.00%
0/82 • 52 weeks
2.5%
2/81 • Number of events 2 • 52 weeks
8.5%
7/82 • Number of events 8 • 52 weeks
1.2%
1/81 • Number of events 1 • 52 weeks
0.00%
0/82 • 52 weeks
Psychiatric disorders
Insomnia
3.7%
3/82 • Number of events 5 • 52 weeks
6.2%
5/81 • Number of events 6 • 52 weeks
13.4%
11/82 • Number of events 11 • 52 weeks
11.1%
9/81 • Number of events 10 • 52 weeks
11.0%
9/82 • Number of events 11 • 52 weeks
Psychiatric disorders
Irritability
8.5%
7/82 • Number of events 8 • 52 weeks
4.9%
4/81 • Number of events 4 • 52 weeks
7.3%
6/82 • Number of events 7 • 52 weeks
6.2%
5/81 • Number of events 5 • 52 weeks
2.4%
2/82 • Number of events 2 • 52 weeks
Gastrointestinal disorders
Diarrhoea
11.0%
9/82 • Number of events 14 • 52 weeks
11.1%
9/81 • Number of events 11 • 52 weeks
13.4%
11/82 • Number of events 14 • 52 weeks
13.6%
11/81 • Number of events 17 • 52 weeks
12.2%
10/82 • Number of events 15 • 52 weeks
Gastrointestinal disorders
Vomiting
4.9%
4/82 • Number of events 6 • 52 weeks
6.2%
5/81 • Number of events 7 • 52 weeks
7.3%
6/82 • Number of events 7 • 52 weeks
6.2%
5/81 • Number of events 5 • 52 weeks
4.9%
4/82 • Number of events 4 • 52 weeks
Gastrointestinal disorders
Nausea
4.9%
4/82 • Number of events 4 • 52 weeks
4.9%
4/81 • Number of events 6 • 52 weeks
8.5%
7/82 • Number of events 10 • 52 weeks
4.9%
4/81 • Number of events 6 • 52 weeks
3.7%
3/82 • Number of events 3 • 52 weeks
Musculoskeletal and connective tissue disorders
Back pain
3.7%
3/82 • Number of events 3 • 52 weeks
4.9%
4/81 • Number of events 4 • 52 weeks
3.7%
3/82 • Number of events 3 • 52 weeks
7.4%
6/81 • Number of events 9 • 52 weeks
6.1%
5/82 • Number of events 6 • 52 weeks
Infections and infestations
Nasopharyngitis
8.5%
7/82 • Number of events 8 • 52 weeks
17.3%
14/81 • Number of events 21 • 52 weeks
14.6%
12/82 • Number of events 16 • 52 weeks
16.0%
13/81 • Number of events 15 • 52 weeks
18.3%
15/82 • Number of events 23 • 52 weeks
Infections and infestations
Urinary tract infection
4.9%
4/82 • Number of events 4 • 52 weeks
3.7%
3/81 • Number of events 3 • 52 weeks
7.3%
6/82 • Number of events 6 • 52 weeks
4.9%
4/81 • Number of events 5 • 52 weeks
6.1%
5/82 • Number of events 6 • 52 weeks

Additional Information

Prilenia

Prilenia

Phone: +972 775558

Results disclosure agreements

  • Principal investigator is a sponsor employee Data and results are owned by the sponsor. Results can be used by the institution for (a) internal noncommercial research, education and patient care, and (b) as required under applicable laws and regulations. Other uses require prior written consent of the sponsor.
  • Publication restrictions are in place

Restriction type: OTHER