Trial Outcomes & Findings for Modafinil for Freezing of Gait (FOG) in Parkinson's Disease (PD) (NCT NCT03083132)

NCT ID: NCT03083132

Last Updated: 2021-10-27

Results Overview

The freezing of gait questionnaire (FOG-Q) was administered by a movement disorders neurologist at baseline (week 0), and again after taking the randomly assigned treatment (either Modafinil or placebo) for 12 weeks. The FOG-Q scores 6 items between 0 and 4, for a total score of 24; higher values indicate worse FOG.

Recruitment status

COMPLETED

Study phase

PHASE2

Target enrollment

21 participants

Primary outcome timeframe

12 weeks

Results posted on

2021-10-27

Participant Flow

Participant milestones

Participant milestones
Measure
Early-start
24 weeks of modafinil 50 mg oral daily modafinil 50mg: 1 capsule oral daily
Delayed-start
12 weeks of oral placebo followed by 12 weeks of modafinil 50 mg oral daily modafinil 50mg: 1 capsule oral daily Placebo oral capsule: 1 capsule oral daily
First 12 Weeks (Placebo vs Modafinil)
STARTED
12
9
First 12 Weeks (Placebo vs Modafinil)
COMPLETED
12
7
First 12 Weeks (Placebo vs Modafinil)
NOT COMPLETED
0
2
Last 12 Weeks (Drug for All Subjects)
STARTED
12
7
Last 12 Weeks (Drug for All Subjects)
COMPLETED
11
6
Last 12 Weeks (Drug for All Subjects)
NOT COMPLETED
1
1

Reasons for withdrawal

Reasons for withdrawal
Measure
Early-start
24 weeks of modafinil 50 mg oral daily modafinil 50mg: 1 capsule oral daily
Delayed-start
12 weeks of oral placebo followed by 12 weeks of modafinil 50 mg oral daily modafinil 50mg: 1 capsule oral daily Placebo oral capsule: 1 capsule oral daily
First 12 Weeks (Placebo vs Modafinil)
Withdrawal by Subject
0
2
Last 12 Weeks (Drug for All Subjects)
Physician Decision
1
0
Last 12 Weeks (Drug for All Subjects)
Withdrawal by Subject
0
1

Baseline Characteristics

Modafinil for Freezing of Gait (FOG) in Parkinson's Disease (PD)

Baseline characteristics by cohort

Baseline characteristics by cohort
Measure
Early-start
n=12 Participants
24 weeks of modafinil 50 mg oral daily modafinil 50mg: 1 capsule oral daily
Delayed-start
n=9 Participants
12 weeks of oral placebo followed by 12 weeks of modafinil 50 mg oral daily modafinil 50mg: 1 capsule oral daily Placebo oral capsule: 1 capsule oral daily
Total
n=21 Participants
Total of all reporting groups
Age, Continuous
71.6 years
STANDARD_DEVIATION 6.3 • n=5 Participants
72.9 years
STANDARD_DEVIATION 5.3 • n=7 Participants
72.1 years
STANDARD_DEVIATION 5.8 • n=5 Participants
Sex: Female, Male
Female
3 Participants
n=5 Participants
3 Participants
n=7 Participants
6 Participants
n=5 Participants
Sex: Female, Male
Male
9 Participants
n=5 Participants
6 Participants
n=7 Participants
15 Participants
n=5 Participants
Ethnicity (NIH/OMB)
Hispanic or Latino
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
12 Participants
n=5 Participants
9 Participants
n=7 Participants
21 Participants
n=5 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
Race (NIH/OMB)
Asian
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
Race (NIH/OMB)
Black or African American
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
Race (NIH/OMB)
White
12 Participants
n=5 Participants
9 Participants
n=7 Participants
21 Participants
n=5 Participants
Race (NIH/OMB)
More than one race
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
Region of Enrollment
United States
12 participants
n=5 Participants
9 participants
n=7 Participants
21 participants
n=5 Participants
Freezing of Gait Questionnaire (FOG-Q)
13.8 units on a scale
STANDARD_DEVIATION 2.5 • n=5 Participants
14.4 units on a scale
STANDARD_DEVIATION 1.7 • n=7 Participants
14.0 units on a scale
STANDARD_DEVIATION 2.2 • n=5 Participants
Gait stride length (cm)
69.8 cms
STANDARD_DEVIATION 30.4 • n=5 Participants
82.2 cms
STANDARD_DEVIATION 27.3 • n=7 Participants
75.1 cms
STANDARD_DEVIATION 29.1 • n=5 Participants
motor Unified Parkinson's Disease Rating Scale (UPDRS) score
37.7 units on a scale
STANDARD_DEVIATION 5.9 • n=5 Participants
38.0 units on a scale
STANDARD_DEVIATION 8.3 • n=7 Participants
37.8 units on a scale
STANDARD_DEVIATION 6.9 • n=5 Participants
Parkinson's Disease Questionnaire-39 (PDQ-39)
59.8 units on a scale
STANDARD_DEVIATION 21.1 • n=5 Participants
60.7 units on a scale
STANDARD_DEVIATION 21.3 • n=7 Participants
60.1 units on a scale
STANDARD_DEVIATION 20.7 • n=5 Participants
REM sleep Behavior Disorder Questionnaire (RBD-Q)
5.1 units on a scale
STANDARD_DEVIATION 3.5 • n=5 Participants
5.3 units on a scale
STANDARD_DEVIATION 2.9 • n=7 Participants
5.2 units on a scale
STANDARD_DEVIATION 3.2 • n=5 Participants
Epworth Sleepiness Scale (ESS) score
10.3 units on a scale
STANDARD_DEVIATION 2.9 • n=5 Participants
10.1 units on a scale
STANDARD_DEVIATION 4.6 • n=7 Participants
10.2 units on a scale
STANDARD_DEVIATION 3.6 • n=5 Participants

PRIMARY outcome

Timeframe: 12 weeks

Population: Participants that completed the placebo controlled portion of the study (first 12 weeks of the study)

The freezing of gait questionnaire (FOG-Q) was administered by a movement disorders neurologist at baseline (week 0), and again after taking the randomly assigned treatment (either Modafinil or placebo) for 12 weeks. The FOG-Q scores 6 items between 0 and 4, for a total score of 24; higher values indicate worse FOG.

Outcome measures

Outcome measures
Measure
Delayed-start
n=7 Participants
12 weeks of oral placebo followed by 12 weeks of modafinil 50 mg oral daily modafinil 50mg: 1 capsule oral daily Placebo oral capsule: 1 capsule oral daily
Early-start
n=12 Participants
24 weeks of modafinil 50 mg oral daily modafinil 50mg: 1 capsule oral daily
Mean Change From Baseline Freezing of Gait (FOG) After First 12 Weeks of Treatment, as Measured by the Giladi Freezing of Gait Questionnaire (FOG-Q).
12 weeks
13.43 units on a scale
Standard Deviation 1.90
14.42 units on a scale
Standard Deviation 4.03
Mean Change From Baseline Freezing of Gait (FOG) After First 12 Weeks of Treatment, as Measured by the Giladi Freezing of Gait Questionnaire (FOG-Q).
0 weeks (Baseline)
14.57 units on a scale
Standard Deviation 1.62
13.75 units on a scale
Standard Deviation 2.53

PRIMARY outcome

Timeframe: 12 weeks

Population: Participants that completed the placebo controlled portion of the study (first 12 weeks)

Participants walked on a 20 foot instrumented gait mat for a total of 80 feet, first at baseline (week 0), and again after taking the randomly assigned treatment (either Modafinil or placebo) for 12 weeks. The stride length values usually range between 0 and 160 centimeters (the maximum stride length we have seen in an aging healthy population); lower values typically indicate more shuffling gait and have been associated with greater gait instability.

Outcome measures

Outcome measures
Measure
Delayed-start
n=7 Participants
12 weeks of oral placebo followed by 12 weeks of modafinil 50 mg oral daily modafinil 50mg: 1 capsule oral daily Placebo oral capsule: 1 capsule oral daily
Early-start
n=12 Participants
24 weeks of modafinil 50 mg oral daily modafinil 50mg: 1 capsule oral daily
Mean Change From Baseline Stride Length After 12 Weeks on Treatment, as Measured Using an Instrumented Gait Mat.
0 weeks (baseline)
90.13 cms
Standard Deviation 14.53
69.78 cms
Standard Deviation 30.37
Mean Change From Baseline Stride Length After 12 Weeks on Treatment, as Measured Using an Instrumented Gait Mat.
12 weeks
88.97 cms
Standard Deviation 15.91
64.04 cms
Standard Deviation 33.55

SECONDARY outcome

Timeframe: 12 weeks

Population: Subjects who completed the first 12 weeks of the study

For each participant, the Unified Parkinson's disease Rating scale (UPDRS) was administered by a movement disorders neurologist. The scale was first administered at baseline (week 0), and again after taking the randomly assigned treatment (either Modafinil or placebo) for 12 weeks. The motor subscale of the UPDRS takes integer values between 0 and 4 for each of the 27 items for a total maximum score of 108; higher values indicate worse motor function.

Outcome measures

Outcome measures
Measure
Delayed-start
n=7 Participants
12 weeks of oral placebo followed by 12 weeks of modafinil 50 mg oral daily modafinil 50mg: 1 capsule oral daily Placebo oral capsule: 1 capsule oral daily
Early-start
n=12 Participants
24 weeks of modafinil 50 mg oral daily modafinil 50mg: 1 capsule oral daily
Mean Change From Baseline in Motor Function After 12 Weeks on Treatment, as Measured by the Unified Parkinson's Disease Rating Scale Motor Score (UPDRS-III).
0 weeks (baseline)
39.00 units on a scale
Standard Deviation 9.11
37.71 units on a scale
Standard Deviation 5.95
Mean Change From Baseline in Motor Function After 12 Weeks on Treatment, as Measured by the Unified Parkinson's Disease Rating Scale Motor Score (UPDRS-III).
12 weeks
34.36 units on a scale
Standard Deviation 9.07
37.25 units on a scale
Standard Deviation 10.02

SECONDARY outcome

Timeframe: 12 weeks

Population: Participants that completed the placebo controlled portion of the study (first 12 weeks)

For each participant, the Parkinson's Disease Questionnaire (PDQ-39) was self-administered by participants. The questionnaire was first administered at baseline (week 0), and again after taking the randomly assigned treatment (either Modafinil or placebo) for 12 weeks. The PDQ-39 scores takes integer values between 0 and 4, for each of the 39 items for a total maximum score of 156; higher values indicate worse quality of life.

Outcome measures

Outcome measures
Measure
Delayed-start
n=7 Participants
12 weeks of oral placebo followed by 12 weeks of modafinil 50 mg oral daily modafinil 50mg: 1 capsule oral daily Placebo oral capsule: 1 capsule oral daily
Early-start
n=12 Participants
24 weeks of modafinil 50 mg oral daily modafinil 50mg: 1 capsule oral daily
Mean Change From Baseline Quality of Life After 12 Weeks on Treatment, as Measured by the Parkinson's Disease Questionnaire-39 (PDQ-39).
0 weeks (baseline)
65.7 units on a scale
Standard Deviation 21.2
59.8 units on a scale
Standard Deviation 21.1
Mean Change From Baseline Quality of Life After 12 Weeks on Treatment, as Measured by the Parkinson's Disease Questionnaire-39 (PDQ-39).
12 weeks
63.3 units on a scale
Standard Deviation 23.5
62.6 units on a scale
Standard Deviation 17.5

SECONDARY outcome

Timeframe: 12 weeks

For each participant, the REM sleep behavior disorder questionnaire (RBD-Q) was self-administered by participants. The questionnaires were first administered at baseline (week 0), and again after taking the randomly assigned treatment (either Modafinil or placebo) for 12 weeks. The RBD-Q score takes integer values between 0 and 1, for each of the 13 item yes/no questions for a total maximum score of 13; higher values indicate worse sleep behavior disorder.

Outcome measures

Outcome measures
Measure
Delayed-start
n=7 Participants
12 weeks of oral placebo followed by 12 weeks of modafinil 50 mg oral daily modafinil 50mg: 1 capsule oral daily Placebo oral capsule: 1 capsule oral daily
Early-start
n=12 Participants
24 weeks of modafinil 50 mg oral daily modafinil 50mg: 1 capsule oral daily
Mean Change From Baseline Sleep Quality After 12 Weeks on Treatment, as Measured by the REM Sleep Behavior Disorder Questionnaire (RBD-Q).
12 weeks
3.57 units on a scale
Standard Deviation 2.37
5.58 units on a scale
Standard Deviation 3.65
Mean Change From Baseline Sleep Quality After 12 Weeks on Treatment, as Measured by the REM Sleep Behavior Disorder Questionnaire (RBD-Q).
0 weeks (baseline)
5.42 units on a scale
Standard Deviation 2.37
5.08 units on a scale
Standard Deviation 3.53

SECONDARY outcome

Timeframe: 12 weeks

Population: Participants that completed the placebo controlled portion of the study (first 12 weeks)

For each participant, the Epworth Sleepiness Scale (ESS) questionnaires was self-administered by participants. The questionnaires were first administered at baseline (week 0), and again after taking the randomly assigned treatment (either Modafinil or placebo) for 12 weeks. The ESS takes integer values between 0 and 3, for each of the 8 items for a total maximum score of 24; higher values indicate more daytime sleepiness.

Outcome measures

Outcome measures
Measure
Delayed-start
n=7 Participants
12 weeks of oral placebo followed by 12 weeks of modafinil 50 mg oral daily modafinil 50mg: 1 capsule oral daily Placebo oral capsule: 1 capsule oral daily
Early-start
n=12 Participants
24 weeks of modafinil 50 mg oral daily modafinil 50mg: 1 capsule oral daily
Mean Change From Baseline Sleep Quality After 12 Weeks on Treatment, as Measured by the Epworth Sleepiness Scale (ESS).
0 weeks (baseline)
9.00 units on a scale
Standard Deviation 4.58
10.33 units on a scale
Standard Deviation 2.90
Mean Change From Baseline Sleep Quality After 12 Weeks on Treatment, as Measured by the Epworth Sleepiness Scale (ESS).
12 weeks
8.71 units on a scale
Standard Deviation 2.69
10.25 units on a scale
Standard Deviation 4.35

Adverse Events

Early-start

Serious events: 1 serious events
Other events: 12 other events
Deaths: 0 deaths

Delayed-start

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

Serious adverse events

Serious adverse events
Measure
Early-start
n=12 participants at risk
24 weeks of modafinil 50 mg oral daily modafinil 50mg: 1 capsule oral daily
Delayed-start
n=9 participants at risk
12 weeks of oral placebo followed by 12 weeks of modafinil 50 mg oral daily modafinil 50mg: 1 capsule oral daily Placebo oral capsule: 1 capsule oral daily
Nervous system disorders
Cervical stenosis
8.3%
1/12 • Number of events 1 • Period of the trial (30 weeks)
0.00%
0/9 • Period of the trial (30 weeks)

Other adverse events

Other adverse events
Measure
Early-start
n=12 participants at risk
24 weeks of modafinil 50 mg oral daily modafinil 50mg: 1 capsule oral daily
Delayed-start
n=9 participants at risk
12 weeks of oral placebo followed by 12 weeks of modafinil 50 mg oral daily modafinil 50mg: 1 capsule oral daily Placebo oral capsule: 1 capsule oral daily
Cardiac disorders
lower extremity edema
0.00%
0/12 • Period of the trial (30 weeks)
11.1%
1/9 • Period of the trial (30 weeks)
Cardiac disorders
dyspnea on exertion
0.00%
0/12 • Period of the trial (30 weeks)
11.1%
1/9 • Period of the trial (30 weeks)
Cardiac disorders
palpitations
0.00%
0/12 • Period of the trial (30 weeks)
11.1%
1/9 • Period of the trial (30 weeks)
Cardiac disorders
lightheadedness on standing
8.3%
1/12 • Period of the trial (30 weeks)
0.00%
0/9 • Period of the trial (30 weeks)
Skin and subcutaneous tissue disorders
dry skin
8.3%
1/12 • Period of the trial (30 weeks)
0.00%
0/9 • Period of the trial (30 weeks)
Skin and subcutaneous tissue disorders
facial rash
8.3%
1/12 • Period of the trial (30 weeks)
0.00%
0/9 • Period of the trial (30 weeks)
Skin and subcutaneous tissue disorders
skin tag
8.3%
1/12 • Period of the trial (30 weeks)
0.00%
0/9 • Period of the trial (30 weeks)
Endocrine disorders
cold intolerance
0.00%
0/12 • Period of the trial (30 weeks)
11.1%
1/9 • Period of the trial (30 weeks)
Endocrine disorders
diagnosed with diabetes
8.3%
1/12 • Period of the trial (30 weeks)
0.00%
0/9 • Period of the trial (30 weeks)
General disorders
rhinorrhea
16.7%
2/12 • Period of the trial (30 weeks)
22.2%
2/9 • Period of the trial (30 weeks)
General disorders
allergy flare
0.00%
0/12 • Period of the trial (30 weeks)
11.1%
1/9 • Period of the trial (30 weeks)
Eye disorders
lower eyelid edema
8.3%
1/12 • Period of the trial (30 weeks)
0.00%
0/9 • Period of the trial (30 weeks)
Ear and labyrinth disorders
tinnitus
8.3%
1/12 • Period of the trial (30 weeks)
0.00%
0/9 • Period of the trial (30 weeks)
Gastrointestinal disorders
abdominal pain
0.00%
0/12 • Period of the trial (30 weeks)
11.1%
1/9 • Period of the trial (30 weeks)
Gastrointestinal disorders
constipation
0.00%
0/12 • Period of the trial (30 weeks)
11.1%
1/9 • Period of the trial (30 weeks)
Metabolism and nutrition disorders
hyperphagia
0.00%
0/12 • Period of the trial (30 weeks)
11.1%
1/9 • Period of the trial (30 weeks)
Gastrointestinal disorders
nausea
8.3%
1/12 • Period of the trial (30 weeks)
0.00%
0/9 • Period of the trial (30 weeks)
Musculoskeletal and connective tissue disorders
calf pain/cramps
16.7%
2/12 • Period of the trial (30 weeks)
22.2%
2/9 • Period of the trial (30 weeks)
Musculoskeletal and connective tissue disorders
bursitis/epicondylitis
0.00%
0/12 • Period of the trial (30 weeks)
11.1%
1/9 • Period of the trial (30 weeks)
Musculoskeletal and connective tissue disorders
neck stiffness
8.3%
1/12 • Period of the trial (30 weeks)
0.00%
0/9 • Period of the trial (30 weeks)
Nervous system disorders
paresthesias
8.3%
1/12 • Period of the trial (30 weeks)
11.1%
1/9 • Period of the trial (30 weeks)
Nervous system disorders
morning grogginess
0.00%
0/12 • Period of the trial (30 weeks)
11.1%
1/9 • Period of the trial (30 weeks)
Nervous system disorders
daytime sleepiness
8.3%
1/12 • Period of the trial (30 weeks)
11.1%
1/9 • Period of the trial (30 weeks)
Nervous system disorders
insomnia
8.3%
1/12 • Period of the trial (30 weeks)
33.3%
3/9 • Period of the trial (30 weeks)
Nervous system disorders
falls
8.3%
1/12 • Period of the trial (30 weeks)
22.2%
2/9 • Period of the trial (30 weeks)
Nervous system disorders
sciatica
0.00%
0/12 • Period of the trial (30 weeks)
11.1%
1/9 • Period of the trial (30 weeks)
Nervous system disorders
daytime confusion
8.3%
1/12 • Period of the trial (30 weeks)
0.00%
0/9 • Period of the trial (30 weeks)
Nervous system disorders
dysphagia
8.3%
1/12 • Period of the trial (30 weeks)
0.00%
0/9 • Period of the trial (30 weeks)
Nervous system disorders
fatigue
8.3%
1/12 • Period of the trial (30 weeks)
0.00%
0/9 • Period of the trial (30 weeks)
Nervous system disorders
hallucinations
8.3%
1/12 • Period of the trial (30 weeks)
0.00%
0/9 • Period of the trial (30 weeks)
Nervous system disorders
hand cramps
8.3%
1/12 • Period of the trial (30 weeks)
0.00%
0/9 • Period of the trial (30 weeks)
Nervous system disorders
freezing of gait
8.3%
1/12 • Period of the trial (30 weeks)
0.00%
0/9 • Period of the trial (30 weeks)
Nervous system disorders
headaches
16.7%
2/12 • Period of the trial (30 weeks)
11.1%
1/9 • Period of the trial (30 weeks)
Nervous system disorders
imbalance
16.7%
2/12 • Period of the trial (30 weeks)
0.00%
0/9 • Period of the trial (30 weeks)
Nervous system disorders
difficulty getting out of bed
8.3%
1/12 • Period of the trial (30 weeks)
0.00%
0/9 • Period of the trial (30 weeks)
Nervous system disorders
difficulty with ADLs
8.3%
1/12 • Period of the trial (30 weeks)
0.00%
0/9 • Period of the trial (30 weeks)
Nervous system disorders
slowed gait
8.3%
1/12 • Period of the trial (30 weeks)
0.00%
0/9 • Period of the trial (30 weeks)
Nervous system disorders
toe walking
8.3%
1/12 • Period of the trial (30 weeks)
0.00%
0/9 • Period of the trial (30 weeks)
Nervous system disorders
word finding difficulty
8.3%
1/12 • Period of the trial (30 weeks)
0.00%
0/9 • Period of the trial (30 weeks)
Eye disorders
lacrimation
8.3%
1/12 • Period of the trial (30 weeks)
11.1%
1/9 • Period of the trial (30 weeks)
Eye disorders
visual floaters/flashing
8.3%
1/12 • Period of the trial (30 weeks)
11.1%
1/9 • Period of the trial (30 weeks)
Eye disorders
blurred vision
8.3%
1/12 • Period of the trial (30 weeks)
0.00%
0/9 • Period of the trial (30 weeks)
Psychiatric disorders
anxiety
8.3%
1/12 • Period of the trial (30 weeks)
22.2%
2/9 • Period of the trial (30 weeks)
Psychiatric disorders
depressed mood
8.3%
1/12 • Period of the trial (30 weeks)
0.00%
0/9 • Period of the trial (30 weeks)
Psychiatric disorders
irritability
8.3%
1/12 • Period of the trial (30 weeks)
0.00%
0/9 • Period of the trial (30 weeks)
Renal and urinary disorders
nocturia
33.3%
4/12 • Period of the trial (30 weeks)
11.1%
1/9 • Period of the trial (30 weeks)
Renal and urinary disorders
nephrolithiasis
8.3%
1/12 • Period of the trial (30 weeks)
0.00%
0/9 • Period of the trial (30 weeks)
Renal and urinary disorders
urinary incontinance
8.3%
1/12 • Period of the trial (30 weeks)
0.00%
0/9 • Period of the trial (30 weeks)
Infections and infestations
urinary tract infection
8.3%
1/12 • Period of the trial (30 weeks)
0.00%
0/9 • Period of the trial (30 weeks)

Additional Information

Dr. Tuhin Virmani

University of Arkansas for Medical Sciences

Phone: 501-686-7235

Results disclosure agreements

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