Trial Outcomes & Findings for PH94B Nasal Spray for Anxiety Induced by a Public Speaking Challenge (NCT NCT04754802)

NCT ID: NCT04754802

Last Updated: 2025-09-12

Results Overview

The SUDS is a patient self-rated scale that is scored in the range of 0 to 100 (operationalized for participants in this study as 0=totally relaxed or no anxiety and 100=highest distress or anxiety ever felt

Recruitment status

COMPLETED

Study phase

PHASE3

Target enrollment

224 participants

Primary outcome timeframe

Visit 2 (Baseline; Day 0) to Visit 3 (Day 7 ± 2 days)

Results posted on

2025-09-12

Participant Flow

Participant milestones

Participant milestones
Measure
PH94B
PH94B Nasal Spray - single treatment with 3.2 micrograms PH94B
Placebo
Placebo Nasal Spray - single treatment with placebo
Overall Study
STARTED
112
112
Overall Study
COMPLETED
110
110
Overall Study
NOT COMPLETED
2
2

Reasons for withdrawal

Reasons for withdrawal
Measure
PH94B
PH94B Nasal Spray - single treatment with 3.2 micrograms PH94B
Placebo
Placebo Nasal Spray - single treatment with placebo
Overall Study
Lost to Follow-up
0
2
Overall Study
Withdrawal by Subject
2
0

Baseline Characteristics

PH94B Nasal Spray for Anxiety Induced by a Public Speaking Challenge

Baseline characteristics by cohort

Baseline characteristics by cohort
Measure
PH94B
n=112 Participants
3.2 micrograms PH94B intranasal spray (100 microliters to each nostril) one time PH94B Nasal Spray: Nasal spray delivered 20 minutes before the public speaking stressor
Placebo
n=112 Participants
Placebo intranasal spray (100 microliters to each nostril) one time Placebo Nasal Spray: Nasal spray delivered 20 minutes before the public speaking stressor
Total
n=224 Participants
Total of all reporting groups
Age, Categorical
<=18 years
0 Participants
n=93 Participants
0 Participants
n=4 Participants
0 Participants
n=27 Participants
Age, Categorical
Between 18 and 65 years
112 Participants
n=93 Participants
112 Participants
n=4 Participants
224 Participants
n=27 Participants
Age, Categorical
>=65 years
0 Participants
n=93 Participants
0 Participants
n=4 Participants
0 Participants
n=27 Participants
Age, Continuous
34.9 years
STANDARD_DEVIATION 10.69 • n=93 Participants
35.6 years
STANDARD_DEVIATION 11.71 • n=4 Participants
35.3 years
STANDARD_DEVIATION 11.19 • n=27 Participants
Sex: Female, Male
Female
77 Participants
n=93 Participants
73 Participants
n=4 Participants
150 Participants
n=27 Participants
Sex: Female, Male
Male
35 Participants
n=93 Participants
39 Participants
n=4 Participants
74 Participants
n=27 Participants
Race (NIH/OMB)
American Indian or Alaska Native
1 Participants
n=93 Participants
3 Participants
n=4 Participants
4 Participants
n=27 Participants
Race (NIH/OMB)
Asian
18 Participants
n=93 Participants
3 Participants
n=4 Participants
21 Participants
n=27 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
1 Participants
n=93 Participants
1 Participants
n=4 Participants
2 Participants
n=27 Participants
Race (NIH/OMB)
Black or African American
23 Participants
n=93 Participants
18 Participants
n=4 Participants
41 Participants
n=27 Participants
Race (NIH/OMB)
White
63 Participants
n=93 Participants
71 Participants
n=4 Participants
134 Participants
n=27 Participants
Race (NIH/OMB)
More than one race
3 Participants
n=93 Participants
10 Participants
n=4 Participants
13 Participants
n=27 Participants
Race (NIH/OMB)
Unknown or Not Reported
3 Participants
n=93 Participants
6 Participants
n=4 Participants
9 Participants
n=27 Participants
Region of Enrollment
United States
112 participants
n=93 Participants
112 participants
n=4 Participants
224 participants
n=27 Participants
Subjective Units of Distress (SUDS) score
77.7 score on a scale
STANDARD_DEVIATION 11.67 • n=93 Participants
78.2 score on a scale
STANDARD_DEVIATION 12.42 • n=4 Participants
77.95 score on a scale
STANDARD_DEVIATION 12.05 • n=27 Participants

PRIMARY outcome

Timeframe: Visit 2 (Baseline; Day 0) to Visit 3 (Day 7 ± 2 days)

The SUDS is a patient self-rated scale that is scored in the range of 0 to 100 (operationalized for participants in this study as 0=totally relaxed or no anxiety and 100=highest distress or anxiety ever felt

Outcome measures

Outcome measures
Measure
PH94B
n=112 Participants
3.2 micrograms PH94B intranasal spray (100 microliters to each nostril) one time PH94B Nasal Spray: Nasal spray delivered 20 minutes before the public speaking stressor
Placebo
n=112 Participants
Placebo intranasal spray (100 microliters to each nostril) one time Placebo Nasal Spray: Nasal spray delivered 20 minutes before the public speaking stressor
Subjective Units of Distress Scale (SUDS) Score
Visit 2
77.7 score on a scale
Standard Deviation 11.67
78.2 score on a scale
Standard Deviation 12.42
Subjective Units of Distress Scale (SUDS) Score
Visit 3
62.3 score on a scale
Standard Deviation 19.40
61.3 score on a scale
Standard Deviation 19.56

SECONDARY outcome

Timeframe: Visit 2 (Baseline; Day 0) to Visit 3 (Day 7 ± 2 days)

Population: Although the population of analysis included n=112, one subject had no CGI-I value. No imputation was done for secondary endpoints, resulting in n=111 in the denominator.

The CGI-I scale is a clinician-rated scale to assess illness improvement. The CGI-I scale includes one item scored from 1 (Very much less anxious) to 7 (Very much more anxious) with 4 being no change. Subjects are considered CGI-I responders with scores of 1 (Very much less anxious) or 2 (Much less anxious

Outcome measures

Outcome measures
Measure
PH94B
n=111 Participants
3.2 micrograms PH94B intranasal spray (100 microliters to each nostril) one time PH94B Nasal Spray: Nasal spray delivered 20 minutes before the public speaking stressor
Placebo
n=112 Participants
Placebo intranasal spray (100 microliters to each nostril) one time Placebo Nasal Spray: Nasal spray delivered 20 minutes before the public speaking stressor
Proportions (%) of CGI-I Responders in PH94B-treated and Placebo-treated Groups at the End of Visit 3 (Treatment)
34 Participants
36 Participants

Adverse Events

PH94B

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

Placebo

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

Serious adverse events

Adverse event data not reported

Other adverse events

Adverse event data not reported

Additional Information

Ester Salman, MPH

Vistagen Therapeutics, Inc.

Phone: 650-577-3693

Results disclosure agreements

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