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A Study of the Safety and Effectiveness of ADX-N05 for Excessive Daytime Sleepiness in Subjects With Narcolepsy

A Twelve-week, Double-blind, Placebo-controlled, Randomized, Parallel-group, Multi-center Study of the Safety and Efficacy of ADX-N05 in the Treatment of Excessive Daytime Sleepiness in Subjects With Narcolepsy

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT01681121
Enrollment
93
Registered
2012-09-07
Start date
2012-09-30
Completion date
2013-08-31
Last updated
2021-05-28

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Narcolepsy

Brief summary

This is a study to evaluate the safety and effectiveness of ADX-N05 compared to placebo in the treatment of excessive daytime sleepiness in adults with narcolepsy.

Interventions

150 mg once a day for 4 weeks followed by 300 mg once a day for 8 weeks

DRUGPlacebo

One capsule placebo to match ADX-N05 to be taken for 4 weeks followed by 2 capsules placebo to match ADX-N05 to be taken for 8 weeks

Sponsors

Jazz Pharmaceuticals
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
TRIPLE (Subject, Caregiver, Investigator)

Eligibility

Sex/Gender
ALL
Age
18 Years to 70 Years
Healthy volunteers
No

Inclusion criteria

* Diagnosis of narcolepsy * Good general health * Willing and able to comply with the study design and schedule and other requirements

Exclusion criteria

* If female, pregnant or lactating * Customary bedtime later than midnight * History of significant medical condition, behavioral, or psychiatric disorder (including suicidal ideation), or surgical history * Any other clinically relevant medical, behavioral or psychiatric disorder other than narcolepsy that is associated with excessive sleepiness * History of significant cardiovascular disease * Body mass index \> 34 * Excessive caffeine use - \> 600 mg/day of caffeine or \> 6 cups of coffee/day * History of alcohol or drug abuse within the past 2 years * Nicotine dependence that has an effect on sleep

Design outcomes

Primary

MeasureTime frameDescription
Change From Baseline in the Average Sleep Latency Time (in Minutes) as Determined From the Maintenance of Wakefulness Test (MWT) for ADX-N05 300 mg vs. Placebo at Last Assessment.Baseline up to Week 12/Last Assessment post-dose.The MWT is a validated objective measure of the ability to stay awake for a defined period of time. The primary analysis was a comparison of treatments vs. control groups on change from Baseline to last available post-Baseline assessment (Week 12/Last Assessment) in the average sleep latency time (in minutes) averaged across the first four trials of the MWT using a two-sample t-test.
Number of Participants With Improved Clinical Global Impression of Change (CGI-C) Scores for ADX-N05 vs. Placebo at Last AssessmentWeek 12The CGI-C scale rated the change in the participant's condition as compared to the Baseline visit on a 7-point scale ranging from a minimum of Very much improved to a maximum of Very much worse. The proportion of subjects experiencing at least minimal improvement on the CGI-C was calculated and summarized for each of the treatment groups at Week 4 and the last available post-Baseline assessment (Week 12/Last Assessment). The CGI-C scale consists of the following ratings: 1-Very Much improved, 2-Much improved, 3-Minimally improved, 4-No change, 5-Minimally worse, 6-Much worse, 7-Very much worse; a rating of 1 indicates a better outcome, and a rating of 7 indicates a worse outcome. Improvement was defined as a CGI-rating of 1, 2, or 3.

Secondary

MeasureTime frameDescription
Change From Baseline in the Average Sleep Latency Time (in Minutes) as Determined From the Maintenance of Wakefulness Test (MWT) (Average of the First Four Trials) Following Four Weeks of Treatment With ADX-N05 150 mg vs. PlaceboBaseline up to Week 4 post-dose.The MWT is a validated objective measure of the ability to stay awake for a defined period of time. The MWT consisted of five 40-minute trials separated by 2 hour intervals. This secondary analysis repeated the primary analysis for effects at the end of Week 4.
Change From Baseline in Sleep Latency Time (in Minutes) as Determined From Each of the 5 Individual MWT Trials for ADX-N05 vs. Placebo at Week 4Baseline up to Week 4 post-dose.The MWT is a validated objective measure of the ability to stay awake for a defined period of time. The MWT consisted of five 40-minute trials separated by 2 hour intervals. This secondary analysis repeated the primary analysis for effects for the five MWT trials analyzed separately at Week 4.
Change From Baseline in Sleep Latency Time (in Minutes) as Determined From Each of the 5 Individual MWT Trials for ADX-N05 vs. Placebo at Last AssessmentBaseline up to Week 12/Last Assessment post-dose.The MWT is a validated objective measure of the ability to stay awake for a defined period of time. The MWT consisted of five 40-minute trials separated by 2 hour intervals. This secondary analysis repeated the primary analysis for effects for the five MWT trials analyzed separately at the last available post-Baseline assessment (Week 12/Last Assessment).
Change From Baseline in Epworth Sleepiness Scale (ESS) Scores for ADX-N05 vs. Placebo at Week 4Baseline up to Week 4 post-dose.The ESS is a questionnaire intended to measure daytime sleepiness. In this test, participants answer questions with regard to the level of sleepiness they experienced over approximately the 7 days prior to the assessment while performing eight common, non-stimulating activities. The ESS total score range is 1 to 24. Each activity is rated on a 4-point scale ranging from a minimum of would never doze to a maximum of a high chance of dozing. Thus, the ESS scale range is as follows: 0=would never doze, 1=slight chance of dozing, 2=moderate chance of dozing, 3=high chance of dozing; 0 indicates a better outcome, and 3 indicates a worse outcome. A negative mean change value indicates a decrease in score from baseline and an improvement in daytime sleepiness.
Change From Baseline in ESS Scores for ADX-N05 vs. Placebo at Last AssessmentBaseline up to Week 12/Last Assessment post-dose.The ESS is a questionnaire intended to measure daytime sleepiness. In this test, participants answer questions with regard to the level of sleepiness they experienced over approximately the 7 days prior to the assessment while performing eight common, non-stimulating activities. The ESS total score range is 1 to 24. Each activity is rated on a 4-point scale ranging from a minimum of would never doze to a maximum of a high chance of dozing. Thus, the ESS scale range is as follows: 0=would never doze, 1=slight chance of dozing, 2=moderate chance of dozing, 3=high chance of dozing; 0 indicates a better outcome, and 3 indicates a worse outcome. A negative mean change value indicates a decrease in score from baseline and an improvement in daytime sleepiness.
Number of Participants With Improved Clinical Global Impression of Change (CGI-C) Scores for ADX-N05 vs. Placebo at Week 4Week 4The CGI-C scale rated the change in the participant's condition as compared to the Baseline visit on a 7-point scale ranging from a minimum of Very much improved to a maximum of Very much worse. The proportion of subjects experiencing at least minimal improvement on the CGI-C was calculated and summarized for each of the treatment groups at Week 4 and the last available post-Baseline assessment (Week 12/Last Assessment). The CGI-C scale consists of the following ratings: 1-Very Much improved, 2-Much improved, 3-Minimally improved, 4-No change, 5-Minimally worse, 6-Much worse, 7-Very much worse; a rating of 1 indicates a better outcome, and a rating of 7 indicates a worse outcome. Improvement was defined as a CGI-rating of 1, 2, or 3.
Number of Participants With Improved Patient Global Impression Change (PGI-C) Scores for ADX-N05 vs. Placebo at Week 4Week 4The Patient Global Impression - Change (PGI-C) scale was completed by the subject at the Weeks 1, 2, 4, 6, 8, and 12 visits. The CGI-C scale rated the change in the participant's condition as compared to the Baseline visit on a 7-point scale ranging from a minimum of Very much improved to a maximum of Very much worse. The proportion of subjects experiencing at least minimal improvement on the CGI-C was calculated and summarized for each of the treatment groups at Week 4 and the last available post-Baseline assessment (Week 12/Last Assessment). The CGI-C scale consists of the following ratings: 1-Very Much improved, 2-Much improved, 3-Minimally improved, 4-No change, 5-Minimally worse, 6-Much worse, 7-Very much worse; a rating of 1 indicates a better outcome, and a rating of 7 indicates a worse outcome. Improvement was defined as a CGI-rating of 1, 2, or 3.
Number of Participants With Improved PGI-C Scores for ADX-N05 vs. Placebo at Last AssessmentWeek 12/Last AssessmentThe Patient Global Impression - Change (PGI-C) scale was completed by the subject at the Weeks 1, 2, 4, 6, 8, and 12 visits. The CGI-C scale rated the change in the participant's condition as compared to the Baseline visit on a 7-point scale ranging from a minimum of Very much improved to a maximum of Very much worse. The proportion of subjects experiencing at least minimal improvement on the CGI-C was calculated and summarized for each of the treatment groups at Week 4 and the last available post-Baseline assessment (Week 12/Last Assessment). The CGI-C scale consists of the following ratings: 1-Very Much improved, 2-Much improved, 3-Minimally improved, 4-No change, 5-Minimally worse, 6-Much worse, 7-Very much worse; a rating of 1 indicates a better outcome, and a rating of 7 indicates a worse outcome. Improvement was defined as a CGI-rating of 1, 2, or 3.

Countries

United States

Participant flow

Participants by arm

ArmCount
ADX-N05
ADX-N05 to be taken once a day for 12 weeks ADX-N05: 150 mg once a day for 4 weeks followed by 300 mg once a day for 8 weeks
44
Placebo
Placebo to match ADX-N05 to be taken once a day for 12 weeks Placebo: One capsule placebo to match ADX-N05 to be taken for 4 weeks followed by 2 capsules placebo to match ADX-N05 to be taken for 8 weeks
49
Total93

Baseline characteristics

CharacteristicADX-N05PlaceboTotal
Age, Continuous41 Years
STANDARD_DEVIATION 12.33
36.7 Years
STANDARD_DEVIATION 11.71
38.7 Years
STANDARD_DEVIATION 12.13
Sex: Female, Male
Female
30 Participants30 Participants60 Participants
Sex: Female, Male
Male
14 Participants19 Participants33 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
0 / 440 / 49
other
Total, other adverse events
21 / 4412 / 49
serious
Total, serious adverse events
2 / 440 / 49

Outcome results

Primary

Change From Baseline in the Average Sleep Latency Time (in Minutes) as Determined From the Maintenance of Wakefulness Test (MWT) for ADX-N05 300 mg vs. Placebo at Last Assessment.

The MWT is a validated objective measure of the ability to stay awake for a defined period of time. The primary analysis was a comparison of treatments vs. control groups on change from Baseline to last available post-Baseline assessment (Week 12/Last Assessment) in the average sleep latency time (in minutes) averaged across the first four trials of the MWT using a two-sample t-test.

Time frame: Baseline up to Week 12/Last Assessment post-dose.

ArmMeasureValue (MEAN)Dispersion
ADX-N05Change From Baseline in the Average Sleep Latency Time (in Minutes) as Determined From the Maintenance of Wakefulness Test (MWT) for ADX-N05 300 mg vs. Placebo at Last Assessment.12.8 minutesStandard Deviation 10.28
PlaceboChange From Baseline in the Average Sleep Latency Time (in Minutes) as Determined From the Maintenance of Wakefulness Test (MWT) for ADX-N05 300 mg vs. Placebo at Last Assessment.2.1 minutesStandard Deviation 7.88
Primary

Number of Participants With Improved Clinical Global Impression of Change (CGI-C) Scores for ADX-N05 vs. Placebo at Last Assessment

The CGI-C scale rated the change in the participant's condition as compared to the Baseline visit on a 7-point scale ranging from a minimum of Very much improved to a maximum of Very much worse. The proportion of subjects experiencing at least minimal improvement on the CGI-C was calculated and summarized for each of the treatment groups at Week 4 and the last available post-Baseline assessment (Week 12/Last Assessment). The CGI-C scale consists of the following ratings: 1-Very Much improved, 2-Much improved, 3-Minimally improved, 4-No change, 5-Minimally worse, 6-Much worse, 7-Very much worse; a rating of 1 indicates a better outcome, and a rating of 7 indicates a worse outcome. Improvement was defined as a CGI-rating of 1, 2, or 3.

Time frame: Week 12

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
ADX-N05Number of Participants With Improved Clinical Global Impression of Change (CGI-C) Scores for ADX-N05 vs. Placebo at Last Assessment37 Participants
PlaceboNumber of Participants With Improved Clinical Global Impression of Change (CGI-C) Scores for ADX-N05 vs. Placebo at Last Assessment18 Participants
Secondary

Change From Baseline in Epworth Sleepiness Scale (ESS) Scores for ADX-N05 vs. Placebo at Week 4

The ESS is a questionnaire intended to measure daytime sleepiness. In this test, participants answer questions with regard to the level of sleepiness they experienced over approximately the 7 days prior to the assessment while performing eight common, non-stimulating activities. The ESS total score range is 1 to 24. Each activity is rated on a 4-point scale ranging from a minimum of would never doze to a maximum of a high chance of dozing. Thus, the ESS scale range is as follows: 0=would never doze, 1=slight chance of dozing, 2=moderate chance of dozing, 3=high chance of dozing; 0 indicates a better outcome, and 3 indicates a worse outcome. A negative mean change value indicates a decrease in score from baseline and an improvement in daytime sleepiness.

Time frame: Baseline up to Week 4 post-dose.

ArmMeasureValue (MEAN)Dispersion
ADX-N05Change From Baseline in Epworth Sleepiness Scale (ESS) Scores for ADX-N05 vs. Placebo at Week 4-5.6 score on a scaleStandard Deviation 5.28
PlaceboChange From Baseline in Epworth Sleepiness Scale (ESS) Scores for ADX-N05 vs. Placebo at Week 4-2.4 score on a scaleStandard Deviation 4.6
Secondary

Change From Baseline in ESS Scores for ADX-N05 vs. Placebo at Last Assessment

The ESS is a questionnaire intended to measure daytime sleepiness. In this test, participants answer questions with regard to the level of sleepiness they experienced over approximately the 7 days prior to the assessment while performing eight common, non-stimulating activities. The ESS total score range is 1 to 24. Each activity is rated on a 4-point scale ranging from a minimum of would never doze to a maximum of a high chance of dozing. Thus, the ESS scale range is as follows: 0=would never doze, 1=slight chance of dozing, 2=moderate chance of dozing, 3=high chance of dozing; 0 indicates a better outcome, and 3 indicates a worse outcome. A negative mean change value indicates a decrease in score from baseline and an improvement in daytime sleepiness.

Time frame: Baseline up to Week 12/Last Assessment post-dose.

ArmMeasureValue (MEAN)Dispersion
ADX-N05Change From Baseline in ESS Scores for ADX-N05 vs. Placebo at Last Assessment-8.5 score on a scaleStandard Deviation 5.75
PlaceboChange From Baseline in ESS Scores for ADX-N05 vs. Placebo at Last Assessment-2.5 score on a scaleStandard Deviation 5.13
Secondary

Change From Baseline in Sleep Latency Time (in Minutes) as Determined From Each of the 5 Individual MWT Trials for ADX-N05 vs. Placebo at Last Assessment

The MWT is a validated objective measure of the ability to stay awake for a defined period of time. The MWT consisted of five 40-minute trials separated by 2 hour intervals. This secondary analysis repeated the primary analysis for effects for the five MWT trials analyzed separately at the last available post-Baseline assessment (Week 12/Last Assessment).

Time frame: Baseline up to Week 12/Last Assessment post-dose.

ArmMeasureGroupValue (MEAN)Dispersion
ADX-N05Change From Baseline in Sleep Latency Time (in Minutes) as Determined From Each of the 5 Individual MWT Trials for ADX-N05 vs. Placebo at Last AssessmentTrial 410.8 minutesStandard Deviation 13.85
ADX-N05Change From Baseline in Sleep Latency Time (in Minutes) as Determined From Each of the 5 Individual MWT Trials for ADX-N05 vs. Placebo at Last AssessmentTrial 58.2 minutesStandard Deviation 12.73
ADX-N05Change From Baseline in Sleep Latency Time (in Minutes) as Determined From Each of the 5 Individual MWT Trials for ADX-N05 vs. Placebo at Last AssessmentTrial 115.5 minutesStandard Deviation 13.84
ADX-N05Change From Baseline in Sleep Latency Time (in Minutes) as Determined From Each of the 5 Individual MWT Trials for ADX-N05 vs. Placebo at Last AssessmentTrial 213.4 minutesStandard Deviation 15.31
ADX-N05Change From Baseline in Sleep Latency Time (in Minutes) as Determined From Each of the 5 Individual MWT Trials for ADX-N05 vs. Placebo at Last AssessmentTrial 311.4 minutesStandard Deviation 12.62
PlaceboChange From Baseline in Sleep Latency Time (in Minutes) as Determined From Each of the 5 Individual MWT Trials for ADX-N05 vs. Placebo at Last AssessmentTrial 32.0 minutesStandard Deviation 10.83
PlaceboChange From Baseline in Sleep Latency Time (in Minutes) as Determined From Each of the 5 Individual MWT Trials for ADX-N05 vs. Placebo at Last AssessmentTrial 22.7 minutesStandard Deviation 10.97
PlaceboChange From Baseline in Sleep Latency Time (in Minutes) as Determined From Each of the 5 Individual MWT Trials for ADX-N05 vs. Placebo at Last AssessmentTrial 5-1.6 minutesStandard Deviation 13.12
PlaceboChange From Baseline in Sleep Latency Time (in Minutes) as Determined From Each of the 5 Individual MWT Trials for ADX-N05 vs. Placebo at Last AssessmentTrial 41.0 minutesStandard Deviation 6.92
PlaceboChange From Baseline in Sleep Latency Time (in Minutes) as Determined From Each of the 5 Individual MWT Trials for ADX-N05 vs. Placebo at Last AssessmentTrial 12.6 minutesStandard Deviation 10.65
Secondary

Change From Baseline in Sleep Latency Time (in Minutes) as Determined From Each of the 5 Individual MWT Trials for ADX-N05 vs. Placebo at Week 4

The MWT is a validated objective measure of the ability to stay awake for a defined period of time. The MWT consisted of five 40-minute trials separated by 2 hour intervals. This secondary analysis repeated the primary analysis for effects for the five MWT trials analyzed separately at Week 4.

Time frame: Baseline up to Week 4 post-dose.

ArmMeasureGroupValue (MEAN)Dispersion
ADX-N05Change From Baseline in Sleep Latency Time (in Minutes) as Determined From Each of the 5 Individual MWT Trials for ADX-N05 vs. Placebo at Week 4Trial 39.9 minutesStandard Deviation 11.44
ADX-N05Change From Baseline in Sleep Latency Time (in Minutes) as Determined From Each of the 5 Individual MWT Trials for ADX-N05 vs. Placebo at Week 4Trial 46.8 minutesStandard Deviation 10.56
ADX-N05Change From Baseline in Sleep Latency Time (in Minutes) as Determined From Each of the 5 Individual MWT Trials for ADX-N05 vs. Placebo at Week 4Trial 29.7 minutesStandard Deviation 12.51
ADX-N05Change From Baseline in Sleep Latency Time (in Minutes) as Determined From Each of the 5 Individual MWT Trials for ADX-N05 vs. Placebo at Week 4Trial 55.4 minutesStandard Deviation 9.1
ADX-N05Change From Baseline in Sleep Latency Time (in Minutes) as Determined From Each of the 5 Individual MWT Trials for ADX-N05 vs. Placebo at Week 4Trial 111.7 minutesStandard Deviation 12.5
PlaceboChange From Baseline in Sleep Latency Time (in Minutes) as Determined From Each of the 5 Individual MWT Trials for ADX-N05 vs. Placebo at Week 4Trial 5-4.0 minutesStandard Deviation 12.28
PlaceboChange From Baseline in Sleep Latency Time (in Minutes) as Determined From Each of the 5 Individual MWT Trials for ADX-N05 vs. Placebo at Week 4Trial 11.6 minutesStandard Deviation 9.86
PlaceboChange From Baseline in Sleep Latency Time (in Minutes) as Determined From Each of the 5 Individual MWT Trials for ADX-N05 vs. Placebo at Week 4Trial 21.0 minutesStandard Deviation 9.01
PlaceboChange From Baseline in Sleep Latency Time (in Minutes) as Determined From Each of the 5 Individual MWT Trials for ADX-N05 vs. Placebo at Week 4Trial 41.8 minutesStandard Deviation 7.64
PlaceboChange From Baseline in Sleep Latency Time (in Minutes) as Determined From Each of the 5 Individual MWT Trials for ADX-N05 vs. Placebo at Week 4Trial 31.3 minutesStandard Deviation 9.86
Secondary

Change From Baseline in the Average Sleep Latency Time (in Minutes) as Determined From the Maintenance of Wakefulness Test (MWT) (Average of the First Four Trials) Following Four Weeks of Treatment With ADX-N05 150 mg vs. Placebo

The MWT is a validated objective measure of the ability to stay awake for a defined period of time. The MWT consisted of five 40-minute trials separated by 2 hour intervals. This secondary analysis repeated the primary analysis for effects at the end of Week 4.

Time frame: Baseline up to Week 4 post-dose.

ArmMeasureValue (MEAN)Dispersion
ADX-N05Change From Baseline in the Average Sleep Latency Time (in Minutes) as Determined From the Maintenance of Wakefulness Test (MWT) (Average of the First Four Trials) Following Four Weeks of Treatment With ADX-N05 150 mg vs. Placebo9.5 minutesStandard Deviation 8.38
PlaceboChange From Baseline in the Average Sleep Latency Time (in Minutes) as Determined From the Maintenance of Wakefulness Test (MWT) (Average of the First Four Trials) Following Four Weeks of Treatment With ADX-N05 150 mg vs. Placebo1.4 minutesStandard Deviation 7.59
Secondary

Number of Participants With Improved Clinical Global Impression of Change (CGI-C) Scores for ADX-N05 vs. Placebo at Week 4

The CGI-C scale rated the change in the participant's condition as compared to the Baseline visit on a 7-point scale ranging from a minimum of Very much improved to a maximum of Very much worse. The proportion of subjects experiencing at least minimal improvement on the CGI-C was calculated and summarized for each of the treatment groups at Week 4 and the last available post-Baseline assessment (Week 12/Last Assessment). The CGI-C scale consists of the following ratings: 1-Very Much improved, 2-Much improved, 3-Minimally improved, 4-No change, 5-Minimally worse, 6-Much worse, 7-Very much worse; a rating of 1 indicates a better outcome, and a rating of 7 indicates a worse outcome. Improvement was defined as a CGI-rating of 1, 2, or 3.

Time frame: Week 4

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
ADX-N05Number of Participants With Improved Clinical Global Impression of Change (CGI-C) Scores for ADX-N05 vs. Placebo at Week 432 Participants
PlaceboNumber of Participants With Improved Clinical Global Impression of Change (CGI-C) Scores for ADX-N05 vs. Placebo at Week 423 Participants
Secondary

Number of Participants With Improved Patient Global Impression Change (PGI-C) Scores for ADX-N05 vs. Placebo at Week 4

The Patient Global Impression - Change (PGI-C) scale was completed by the subject at the Weeks 1, 2, 4, 6, 8, and 12 visits. The CGI-C scale rated the change in the participant's condition as compared to the Baseline visit on a 7-point scale ranging from a minimum of Very much improved to a maximum of Very much worse. The proportion of subjects experiencing at least minimal improvement on the CGI-C was calculated and summarized for each of the treatment groups at Week 4 and the last available post-Baseline assessment (Week 12/Last Assessment). The CGI-C scale consists of the following ratings: 1-Very Much improved, 2-Much improved, 3-Minimally improved, 4-No change, 5-Minimally worse, 6-Much worse, 7-Very much worse; a rating of 1 indicates a better outcome, and a rating of 7 indicates a worse outcome. Improvement was defined as a CGI-rating of 1, 2, or 3.

Time frame: Week 4

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
ADX-N05Number of Participants With Improved Patient Global Impression Change (PGI-C) Scores for ADX-N05 vs. Placebo at Week 433 Participants
PlaceboNumber of Participants With Improved Patient Global Impression Change (PGI-C) Scores for ADX-N05 vs. Placebo at Week 420 Participants
Secondary

Number of Participants With Improved PGI-C Scores for ADX-N05 vs. Placebo at Last Assessment

The Patient Global Impression - Change (PGI-C) scale was completed by the subject at the Weeks 1, 2, 4, 6, 8, and 12 visits. The CGI-C scale rated the change in the participant's condition as compared to the Baseline visit on a 7-point scale ranging from a minimum of Very much improved to a maximum of Very much worse. The proportion of subjects experiencing at least minimal improvement on the CGI-C was calculated and summarized for each of the treatment groups at Week 4 and the last available post-Baseline assessment (Week 12/Last Assessment). The CGI-C scale consists of the following ratings: 1-Very Much improved, 2-Much improved, 3-Minimally improved, 4-No change, 5-Minimally worse, 6-Much worse, 7-Very much worse; a rating of 1 indicates a better outcome, and a rating of 7 indicates a worse outcome. Improvement was defined as a CGI-rating of 1, 2, or 3.

Time frame: Week 12/Last Assessment

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
ADX-N05Number of Participants With Improved PGI-C Scores for ADX-N05 vs. Placebo at Last Assessment40 Participants
PlaceboNumber of Participants With Improved PGI-C Scores for ADX-N05 vs. Placebo at Last Assessment18 Participants

Source: ClinicalTrials.gov · Data processed: Mar 1, 2026