Trial Outcomes & Findings for BOTOX® for the Treatment of Platysma Prominence (NCT NCT03915067)

NCT ID: NCT03915067

Last Updated: 2023-05-03

Results Overview

The investigator evaluated the participant's platysma prominence severity using a 5-grade scale C-APPS at maximum contraction where 1= minimal, and 5= extreme. Higher values indicate worsening condition. Data is reported for participants who achieved at least a 1-grade improvement rated on the C-APPS. Percentages are rounded off to whole number at the nearest decimal. Cochran-Mantel-Haenszel (CMH) chi-squared test was used for analysis.

Recruitment status

COMPLETED

Study phase

PHASE2

Target enrollment

171 participants

Primary outcome timeframe

Day 14

Results posted on

2023-05-03

Participant Flow

Participant flow and all-cause mortality tables are based on all participants randomized on Day 1. Adverse events are reported for safety population, which included all participants who were administered study intervention.

Participant milestones

Participant milestones
Measure
Placebo
Participants received matching placebo as superficial intramuscular injections administered to the platysma muscle on Day 1.
BOTOX® Low Dose
Participants received BOTOX® Low Dose as superficial intramuscular injections administered to the platysma muscle on Day 1.
BOTOX® High Dose
Participants received BOTOX® High Dose as superficial intramuscular injections administered to the platysma muscle on Day 1.
Overall Study
STARTED
57
59
55
Overall Study
Modified Intent-to-treat (mITT) Population
53
58
53
Overall Study
Safety Population
56
59
54
Overall Study
COMPLETED
47
50
49
Overall Study
NOT COMPLETED
10
9
6

Reasons for withdrawal

Reasons for withdrawal
Measure
Placebo
Participants received matching placebo as superficial intramuscular injections administered to the platysma muscle on Day 1.
BOTOX® Low Dose
Participants received BOTOX® Low Dose as superficial intramuscular injections administered to the platysma muscle on Day 1.
BOTOX® High Dose
Participants received BOTOX® High Dose as superficial intramuscular injections administered to the platysma muscle on Day 1.
Overall Study
Adverse Event
0
0
1
Overall Study
Withdrawal by Subject
4
3
0
Overall Study
Lost to Follow-up
3
2
0
Overall Study
Protocol Deviation
0
0
1
Overall Study
Covid-19 Related Issues
2
4
4
Overall Study
Randomized With Incorrect C-APPS
1
0
0

Baseline Characteristics

BOTOX® for the Treatment of Platysma Prominence

Baseline characteristics by cohort

Baseline characteristics by cohort
Measure
Placebo
n=53 Participants
Participants received matching placebo as superficial intramuscular injections administered to the platysma muscle on Day 1.
BOTOX® Low Dose
n=58 Participants
Participants received BOTOX® Low Dose as superficial intramuscular injections administered to the platysma muscle on Day 1.
BOTOX® High Dose
n=53 Participants
Participants received BOTOX® High Dose as superficial intramuscular injections administered to the platysma muscle on Day 1.
Total
n=164 Participants
Total of all reporting groups
Age, Continuous
49.3 years
STANDARD_DEVIATION 9.59 • n=5 Participants
51.8 years
STANDARD_DEVIATION 9.16 • n=7 Participants
48.6 years
STANDARD_DEVIATION 10.21 • n=5 Participants
50.0 years
STANDARD_DEVIATION 9.69 • n=4 Participants
Sex: Female, Male
Female
52 Participants
n=5 Participants
54 Participants
n=7 Participants
50 Participants
n=5 Participants
156 Participants
n=4 Participants
Sex: Female, Male
Male
1 Participants
n=5 Participants
4 Participants
n=7 Participants
3 Participants
n=5 Participants
8 Participants
n=4 Participants
Ethnicity (NIH/OMB)
Hispanic or Latino
5 Participants
n=5 Participants
6 Participants
n=7 Participants
6 Participants
n=5 Participants
17 Participants
n=4 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
48 Participants
n=5 Participants
52 Participants
n=7 Participants
47 Participants
n=5 Participants
147 Participants
n=4 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
0 Participants
n=4 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
0 Participants
n=4 Participants
Race (NIH/OMB)
Asian
1 Participants
n=5 Participants
1 Participants
n=7 Participants
3 Participants
n=5 Participants
5 Participants
n=4 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
2 Participants
n=5 Participants
1 Participants
n=7 Participants
0 Participants
n=5 Participants
3 Participants
n=4 Participants
Race (NIH/OMB)
Black or African American
1 Participants
n=5 Participants
0 Participants
n=7 Participants
1 Participants
n=5 Participants
2 Participants
n=4 Participants
Race (NIH/OMB)
White
49 Participants
n=5 Participants
56 Participants
n=7 Participants
49 Participants
n=5 Participants
154 Participants
n=4 Participants
Race (NIH/OMB)
More than one race
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
0 Participants
n=4 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
0 Participants
n=4 Participants

PRIMARY outcome

Timeframe: Day 14

Population: mITT population included all randomized participants who had at least 1 post-baseline assessment of the primary efficacy parameter, the C-APPS, as described in the protocol. Overall number analyzed is the number of participants with data available for analyses.

The investigator evaluated the participant's platysma prominence severity using a 5-grade scale C-APPS at maximum contraction where 1= minimal, and 5= extreme. Higher values indicate worsening condition. Data is reported for participants who achieved at least a 1-grade improvement rated on the C-APPS. Percentages are rounded off to whole number at the nearest decimal. Cochran-Mantel-Haenszel (CMH) chi-squared test was used for analysis.

Outcome measures

Outcome measures
Measure
Placebo
n=50 Participants
Participants received matching placebo as superficial intramuscular injections administered to the platysma muscle on Day 1.
BOTOX® Low Dose
n=54 Participants
Participants received BOTOX® Low Dose as superficial intramuscular injections administered to the platysma muscle on Day 1.
BOTOX® High Dose
n=51 Participants
Participants received BOTOX® High Dose as superficial intramuscular injections administered to the platysma muscle on Day 1.
Percentage of Participants With at Least 1-Grade Improvement at Day 14 as Rated by Investigator Using the Clinician Allergan Platysma Prominence Scale (C-APPS)
12.0 percentage of participants
Interval 3.0 to 21.0
77.8 percentage of participants
Interval 66.7 to 88.9
88.2 percentage of participants
Interval 79.4 to 97.1

PRIMARY outcome

Timeframe: From the first dose of study drug up to end of study (up to Day 120)

Population: Safety population included all participants who were administered study intervention.

An adverse event (AE) is defined as any untoward medical occurrence in a patient or clinical investigation participant administered a pharmaceutical product which does not necessarily have a causal relationship with this treatment. The investigator assesses the relationship of each event to the use of study drug. Treatment-emergent adverse events are defined as any event that began or worsened in severity on or after the first dose of study drug or any AE that was present before the first dose of study intervention, but increased in severity or became serious after the first dose of study intervention.

Outcome measures

Outcome measures
Measure
Placebo
n=56 Participants
Participants received matching placebo as superficial intramuscular injections administered to the platysma muscle on Day 1.
BOTOX® Low Dose
n=59 Participants
Participants received BOTOX® Low Dose as superficial intramuscular injections administered to the platysma muscle on Day 1.
BOTOX® High Dose
n=54 Participants
Participants received BOTOX® High Dose as superficial intramuscular injections administered to the platysma muscle on Day 1.
Number of Participants Who Experienced One or More Treatment-Emergent Adverse Event (TEAE)
13 Participants
14 Participants
14 Participants

PRIMARY outcome

Timeframe: Baseline (Day 1)

Population: Safety population included all participants who were administered study intervention.

Participants were seated for at least 5 minutes, and pulse was counted over 60 seconds and recorded.

Outcome measures

Outcome measures
Measure
Placebo
n=56 Participants
Participants received matching placebo as superficial intramuscular injections administered to the platysma muscle on Day 1.
BOTOX® Low Dose
n=59 Participants
Participants received BOTOX® Low Dose as superficial intramuscular injections administered to the platysma muscle on Day 1.
BOTOX® High Dose
n=54 Participants
Participants received BOTOX® High Dose as superficial intramuscular injections administered to the platysma muscle on Day 1.
Pulse Rate at Baseline
73.0 beats per minute (beats/min)
Standard Deviation 10.77
74.4 beats per minute (beats/min)
Standard Deviation 9.77
73.6 beats per minute (beats/min)
Standard Deviation 10.66

PRIMARY outcome

Timeframe: Baseline; Day 7

Population: Safety population included all participants who were administered study intervention. Overall number analyzed is the number of participants with data available for analyses.

Participants were seated for at least 5 minutes, and pulse was counted over 60 seconds and recorded.

Outcome measures

Outcome measures
Measure
Placebo
n=46 Participants
Participants received matching placebo as superficial intramuscular injections administered to the platysma muscle on Day 1.
BOTOX® Low Dose
n=49 Participants
Participants received BOTOX® Low Dose as superficial intramuscular injections administered to the platysma muscle on Day 1.
BOTOX® High Dose
n=46 Participants
Participants received BOTOX® High Dose as superficial intramuscular injections administered to the platysma muscle on Day 1.
Change From Baseline in Pulse Rate at Day 7
1.0 beats/min
Standard Deviation 8.19
-0.5 beats/min
Standard Deviation 6.76
1.2 beats/min
Standard Deviation 13.86

PRIMARY outcome

Timeframe: Baseline; Day 14

Population: Safety population included all participants who were administered study intervention. Overall number analyzed is the number of participants with data available for analyses.

Participants were seated for at least 5 minutes, and pulse was counted over 60 seconds and recorded.

Outcome measures

Outcome measures
Measure
Placebo
n=50 Participants
Participants received matching placebo as superficial intramuscular injections administered to the platysma muscle on Day 1.
BOTOX® Low Dose
n=54 Participants
Participants received BOTOX® Low Dose as superficial intramuscular injections administered to the platysma muscle on Day 1.
BOTOX® High Dose
n=51 Participants
Participants received BOTOX® High Dose as superficial intramuscular injections administered to the platysma muscle on Day 1.
Change From Baseline in Pulse Rate at Day 14
0.4 beats/min
Standard Deviation 8.76
-1.4 beats/min
Standard Deviation 7.96
1.3 beats/min
Standard Deviation 10.49

PRIMARY outcome

Timeframe: Baseline; Day 30

Population: Safety population included all participants who were administered study intervention. Overall number analyzed is the number of participants with data available for analyses.

Participants were seated for at least 5 minutes, and pulse was counted over 60 seconds and recorded.

Outcome measures

Outcome measures
Measure
Placebo
n=50 Participants
Participants received matching placebo as superficial intramuscular injections administered to the platysma muscle on Day 1.
BOTOX® Low Dose
n=53 Participants
Participants received BOTOX® Low Dose as superficial intramuscular injections administered to the platysma muscle on Day 1.
BOTOX® High Dose
n=53 Participants
Participants received BOTOX® High Dose as superficial intramuscular injections administered to the platysma muscle on Day 1.
Change From Baseline in Pulse Rate at Day 30
0.1 beats/min
Standard Deviation 11.57
-0.9 beats/min
Standard Deviation 7.09
-0.5 beats/min
Standard Deviation 10.22

PRIMARY outcome

Timeframe: Baseline; Day 60

Population: Safety population included all participants who were administered study intervention. Overall number analyzed is the number of participants with data available for analyses.

Participants were seated for at least 5 minutes, and pulse was counted over 60 seconds and recorded.

Outcome measures

Outcome measures
Measure
Placebo
n=46 Participants
Participants received matching placebo as superficial intramuscular injections administered to the platysma muscle on Day 1.
BOTOX® Low Dose
n=52 Participants
Participants received BOTOX® Low Dose as superficial intramuscular injections administered to the platysma muscle on Day 1.
BOTOX® High Dose
n=51 Participants
Participants received BOTOX® High Dose as superficial intramuscular injections administered to the platysma muscle on Day 1.
Change From Baseline in Pulse Rate at Day 60
0.4 beats/min
Standard Deviation 11.14
0.3 beats/min
Standard Deviation 8.24
-2.1 beats/min
Standard Deviation 11.62

PRIMARY outcome

Timeframe: Baseline; Day 90

Population: Safety population included all participants who were administered study intervention. Overall number analyzed is the number of participants with data available for analyses.

Participants were seated for at least 5 minutes, and pulse was counted over 60 seconds and recorded.

Outcome measures

Outcome measures
Measure
Placebo
n=48 Participants
Participants received matching placebo as superficial intramuscular injections administered to the platysma muscle on Day 1.
BOTOX® Low Dose
n=53 Participants
Participants received BOTOX® Low Dose as superficial intramuscular injections administered to the platysma muscle on Day 1.
BOTOX® High Dose
n=52 Participants
Participants received BOTOX® High Dose as superficial intramuscular injections administered to the platysma muscle on Day 1.
Change From Baseline in Pulse Rate at Day 90
1.1 beats/min
Standard Deviation 10.58
-0.9 beats/min
Standard Deviation 8.76
0.0 beats/min
Standard Deviation 9.45

PRIMARY outcome

Timeframe: Baseline; Day 120

Population: Safety population included all participants who were administered study intervention. Overall number analyzed is the number of participants with data available for analyses.

Participants were seated for at least 5 minutes, and pulse was counted over 60 seconds and recorded.

Outcome measures

Outcome measures
Measure
Placebo
n=47 Participants
Participants received matching placebo as superficial intramuscular injections administered to the platysma muscle on Day 1.
BOTOX® Low Dose
n=50 Participants
Participants received BOTOX® Low Dose as superficial intramuscular injections administered to the platysma muscle on Day 1.
BOTOX® High Dose
n=49 Participants
Participants received BOTOX® High Dose as superficial intramuscular injections administered to the platysma muscle on Day 1.
Change From Baseline in Pulse Rate at Day 120
0.5 beats/min
Standard Deviation 12.39
-0.4 beats/min
Standard Deviation 9.24
0.8 beats/min
Standard Deviation 11.77

PRIMARY outcome

Timeframe: Baseline (Day 1)

Population: Safety population included all participants who were administered study intervention.

Participants were seated for at least 5 minutes, and systolic and diastolic BP was measured.

Outcome measures

Outcome measures
Measure
Placebo
n=56 Participants
Participants received matching placebo as superficial intramuscular injections administered to the platysma muscle on Day 1.
BOTOX® Low Dose
n=59 Participants
Participants received BOTOX® Low Dose as superficial intramuscular injections administered to the platysma muscle on Day 1.
BOTOX® High Dose
n=54 Participants
Participants received BOTOX® High Dose as superficial intramuscular injections administered to the platysma muscle on Day 1.
Systolic and Diastolic Blood Pressure (BP) at Baseline
Systolic Blood Pressure
116.6 millimeters of mercury (mmHg)
Standard Deviation 12.62
119.7 millimeters of mercury (mmHg)
Standard Deviation 14.96
120.4 millimeters of mercury (mmHg)
Standard Deviation 13.38
Systolic and Diastolic Blood Pressure (BP) at Baseline
Diastolic Blood Pressure
77.2 millimeters of mercury (mmHg)
Standard Deviation 9.11
76.6 millimeters of mercury (mmHg)
Standard Deviation 9.26
77.6 millimeters of mercury (mmHg)
Standard Deviation 8.81

PRIMARY outcome

Timeframe: Baseline; Day 7

Population: Safety population included all participants who were administered study intervention. Overall number analyzed is the number of participants with data available for analyses.

Participants were seated for at least 5 minutes, and systolic and diastolic BP was measured.

Outcome measures

Outcome measures
Measure
Placebo
n=46 Participants
Participants received matching placebo as superficial intramuscular injections administered to the platysma muscle on Day 1.
BOTOX® Low Dose
n=49 Participants
Participants received BOTOX® Low Dose as superficial intramuscular injections administered to the platysma muscle on Day 1.
BOTOX® High Dose
n=46 Participants
Participants received BOTOX® High Dose as superficial intramuscular injections administered to the platysma muscle on Day 1.
Change From Baseline in Systolic and Diastolic BP at Day 7
Systolic BP
1.2 mmHg
Standard Deviation 11.49
1.7 mmHg
Standard Deviation 13.37
-2.0 mmHg
Standard Deviation 11.14
Change From Baseline in Systolic and Diastolic BP at Day 7
Diastolic BP
-0.5 mmHg
Standard Deviation 6.66
0.3 mmHg
Standard Deviation 8.43
0.2 mmHg
Standard Deviation 8.57

PRIMARY outcome

Timeframe: Baseline; Day 14

Population: Safety population included all participants who were administered study intervention. Overall number analyzed is the number of participants with data available for analyses.

Participants were seated for at least 5 minutes, and systolic and diastolic BP was measured.

Outcome measures

Outcome measures
Measure
Placebo
n=50 Participants
Participants received matching placebo as superficial intramuscular injections administered to the platysma muscle on Day 1.
BOTOX® Low Dose
n=54 Participants
Participants received BOTOX® Low Dose as superficial intramuscular injections administered to the platysma muscle on Day 1.
BOTOX® High Dose
n=51 Participants
Participants received BOTOX® High Dose as superficial intramuscular injections administered to the platysma muscle on Day 1.
Change From Baseline in Systolic and Diastolic BP at Day 14
Systolic BP
0.0 mmHg
Standard Deviation 9.29
1.9 mmHg
Standard Deviation 13.27
-1.7 mmHg
Standard Deviation 10.17
Change From Baseline in Systolic and Diastolic BP at Day 14
Diastolic BP
-1.0 mmHg
Standard Deviation 6.99
1.1 mmHg
Standard Deviation 8.69
-0.5 mmHg
Standard Deviation 7.41

PRIMARY outcome

Timeframe: Baseline; Day 30

Population: Safety population included all participants who were administered study intervention. Overall number analyzed is the number of participants with data available for analyses.

Participants were seated for at least 5 minutes, and systolic and diastolic BP was measured.

Outcome measures

Outcome measures
Measure
Placebo
n=50 Participants
Participants received matching placebo as superficial intramuscular injections administered to the platysma muscle on Day 1.
BOTOX® Low Dose
n=53 Participants
Participants received BOTOX® Low Dose as superficial intramuscular injections administered to the platysma muscle on Day 1.
BOTOX® High Dose
n=53 Participants
Participants received BOTOX® High Dose as superficial intramuscular injections administered to the platysma muscle on Day 1.
Change From Baseline in Systolic and Diastolic BP at Day 30
Systolic BP
-2.0 mmHg
Standard Deviation 9.25
-0.7 mmHg
Standard Deviation 13.71
-2.8 mmHg
Standard Deviation 9.56
Change From Baseline in Systolic and Diastolic BP at Day 30
Diastolic BP
-1.3 mmHg
Standard Deviation 7.46
0.6 mmHg
Standard Deviation 8.77
-0.8 mmHg
Standard Deviation 9.01

PRIMARY outcome

Timeframe: Baseline; Day 60

Population: Safety population included all participants who were administered study intervention. Overall number analyzed is the number of participants with data available for analyses.

Participants were seated for at least 5 minutes, and systolic and diastolic BP was measured.

Outcome measures

Outcome measures
Measure
Placebo
n=46 Participants
Participants received matching placebo as superficial intramuscular injections administered to the platysma muscle on Day 1.
BOTOX® Low Dose
n=52 Participants
Participants received BOTOX® Low Dose as superficial intramuscular injections administered to the platysma muscle on Day 1.
BOTOX® High Dose
n=51 Participants
Participants received BOTOX® High Dose as superficial intramuscular injections administered to the platysma muscle on Day 1.
Change From Baseline in Systolic and Diastolic BP at Day 60
Systolic BP
-1.2 mmHg
Standard Deviation 9.14
2.2 mmHg
Standard Deviation 14.49
-2.6 mmHg
Standard Deviation 15.00
Change From Baseline in Systolic and Diastolic BP at Day 60
Diastolic BP
-0.4 mmHg
Standard Deviation 6.50
1.9 mmHg
Standard Deviation 10.03
-2.4 mmHg
Standard Deviation 9.80

PRIMARY outcome

Timeframe: Baseline; Day 90

Population: Safety population included all participants who were administered study intervention. Overall number analyzed is the number of participants with data available for analyses.

Participants were seated for at least 5 minutes, and systolic and diastolic BP was measured.

Outcome measures

Outcome measures
Measure
Placebo
n=48 Participants
Participants received matching placebo as superficial intramuscular injections administered to the platysma muscle on Day 1.
BOTOX® Low Dose
n=53 Participants
Participants received BOTOX® Low Dose as superficial intramuscular injections administered to the platysma muscle on Day 1.
BOTOX® High Dose
n=52 Participants
Participants received BOTOX® High Dose as superficial intramuscular injections administered to the platysma muscle on Day 1.
Change From Baseline in Systolic and Diastolic BP at Day 90
Systolic BP
1.4 mmHg
Standard Deviation 11.40
-0.3 mmHg
Standard Deviation 11.62
-2.7 mmHg
Standard Deviation 11.89
Change From Baseline in Systolic and Diastolic BP at Day 90
Diastolic BP
-2.4 mmHg
Standard Deviation 8.52
0.6 mmHg
Standard Deviation 7.14
-3.2 mmHg
Standard Deviation 10.18

PRIMARY outcome

Timeframe: Baseline; Day 120

Population: Safety population included all participants who were administered study intervention. Overall number analyzed is the number of participants with data available for analyses.

Participants were seated for at least 5 minutes, and systolic and diastolic BP was measured.

Outcome measures

Outcome measures
Measure
Placebo
n=47 Participants
Participants received matching placebo as superficial intramuscular injections administered to the platysma muscle on Day 1.
BOTOX® Low Dose
n=50 Participants
Participants received BOTOX® Low Dose as superficial intramuscular injections administered to the platysma muscle on Day 1.
BOTOX® High Dose
n=49 Participants
Participants received BOTOX® High Dose as superficial intramuscular injections administered to the platysma muscle on Day 1.
Change From Baseline in Systolic and Diastolic BP at Day 120
Systolic BP
0.6 mmHg
Standard Deviation 12.05
0.1 mmHg
Standard Deviation 14.11
-1.3 mmHg
Standard Deviation 10.27
Change From Baseline in Systolic and Diastolic BP at Day 120
Diastolic BP
-0.7 mmHg
Standard Deviation 9.92
-0.4 mmHg
Standard Deviation 10.43
-0.5 mmHg
Standard Deviation 9.11

PRIMARY outcome

Timeframe: Baseline (Day 1)

Population: Safety population included all participants who were administered study intervention.

Participants were seated for at least 5 minutes, and breaths were counted for 30 seconds and multiplied by 2.

Outcome measures

Outcome measures
Measure
Placebo
n=56 Participants
Participants received matching placebo as superficial intramuscular injections administered to the platysma muscle on Day 1.
BOTOX® Low Dose
n=59 Participants
Participants received BOTOX® Low Dose as superficial intramuscular injections administered to the platysma muscle on Day 1.
BOTOX® High Dose
n=54 Participants
Participants received BOTOX® High Dose as superficial intramuscular injections administered to the platysma muscle on Day 1.
Respiratory Rate at Baseline
15.6 breaths per minute (breaths/min)
Standard Deviation 2.53
15.5 breaths per minute (breaths/min)
Standard Deviation 2.66
15.6 breaths per minute (breaths/min)
Standard Deviation 2.51

PRIMARY outcome

Timeframe: Baseline; Day 7

Population: Safety population included all participants who were administered study intervention. Overall number analyzed is the number of participants with data available for analyses.

Participants were seated for at least 5 minutes, and breaths were counted for 30 seconds and multiplied by 2.

Outcome measures

Outcome measures
Measure
Placebo
n=46 Participants
Participants received matching placebo as superficial intramuscular injections administered to the platysma muscle on Day 1.
BOTOX® Low Dose
n=49 Participants
Participants received BOTOX® Low Dose as superficial intramuscular injections administered to the platysma muscle on Day 1.
BOTOX® High Dose
n=46 Participants
Participants received BOTOX® High Dose as superficial intramuscular injections administered to the platysma muscle on Day 1.
Change From Baseline in Respiratory Rate at Day 7
-0.1 breaths/min
Standard Deviation 1.73
0.1 breaths/min
Standard Deviation 1.80
-0.2 breaths/min
Standard Deviation 1.65

PRIMARY outcome

Timeframe: Baseline; Day 14

Population: Safety population included all participants who were administered study intervention. Overall number analyzed is the number of participants with data available for analyses.

Participants were seated for at least 5 minutes, and breaths were counted for 30 seconds and multiplied by 2.

Outcome measures

Outcome measures
Measure
Placebo
n=50 Participants
Participants received matching placebo as superficial intramuscular injections administered to the platysma muscle on Day 1.
BOTOX® Low Dose
n=54 Participants
Participants received BOTOX® Low Dose as superficial intramuscular injections administered to the platysma muscle on Day 1.
BOTOX® High Dose
n=51 Participants
Participants received BOTOX® High Dose as superficial intramuscular injections administered to the platysma muscle on Day 1.
Change From Baseline in Respiratory Rate at Day 14
-0.2 breaths/min
Standard Deviation 1.20
-0.1 breaths/min
Standard Deviation 2.05
0.0 breaths/min
Standard Deviation 1.55

PRIMARY outcome

Timeframe: Baseline; Day 30

Population: Safety population included all participants who were administered study intervention. Overall number analyzed is the number of participants with data available for analyses.

Participants were seated for at least 5 minutes, and breaths were counted for 30 seconds and multiplied by 2.

Outcome measures

Outcome measures
Measure
Placebo
n=50 Participants
Participants received matching placebo as superficial intramuscular injections administered to the platysma muscle on Day 1.
BOTOX® Low Dose
n=53 Participants
Participants received BOTOX® Low Dose as superficial intramuscular injections administered to the platysma muscle on Day 1.
BOTOX® High Dose
n=53 Participants
Participants received BOTOX® High Dose as superficial intramuscular injections administered to the platysma muscle on Day 1.
Change From Baseline in Respiratory Rate at Day 30
-0.3 breaths/min
Standard Deviation 1.70
0.5 breaths/min
Standard Deviation 1.86
0.0 breaths/min
Standard Deviation 1.63

PRIMARY outcome

Timeframe: Baseline; Day 60

Population: Safety population included all participants who were administered study intervention. Overall number analyzed is the number of participants with data available for analyses.

Participants were seated for at least 5 minutes, and breaths were counted for 30 seconds and multiplied by 2.

Outcome measures

Outcome measures
Measure
Placebo
n=46 Participants
Participants received matching placebo as superficial intramuscular injections administered to the platysma muscle on Day 1.
BOTOX® Low Dose
n=52 Participants
Participants received BOTOX® Low Dose as superficial intramuscular injections administered to the platysma muscle on Day 1.
BOTOX® High Dose
n=51 Participants
Participants received BOTOX® High Dose as superficial intramuscular injections administered to the platysma muscle on Day 1.
Change From Baseline in Respiratory Rate at Day 60
-0.2 breaths/min
Standard Deviation 1.83
-0.1 breaths/min
Standard Deviation 1.69
0.2 breaths/min
Standard Deviation 1.83

PRIMARY outcome

Timeframe: Baseline; Day 90

Population: Safety population included all participants who were administered study intervention. Overall number analyzed is the number of participants with data available for analyses.

Participants were seated for at least 5 minutes, and breaths were counted for 30 seconds and multiplied by 2.

Outcome measures

Outcome measures
Measure
Placebo
n=48 Participants
Participants received matching placebo as superficial intramuscular injections administered to the platysma muscle on Day 1.
BOTOX® Low Dose
n=53 Participants
Participants received BOTOX® Low Dose as superficial intramuscular injections administered to the platysma muscle on Day 1.
BOTOX® High Dose
n=52 Participants
Participants received BOTOX® High Dose as superficial intramuscular injections administered to the platysma muscle on Day 1.
Change From Baseline in Respiratory Rate at Day 90
-0.3 breaths/min
Standard Deviation 1.85
-0.1 breaths/min
Standard Deviation 2.00
-0.2 breaths/min
Standard Deviation 2.04

PRIMARY outcome

Timeframe: Baseline; Day 120

Population: Safety population included all participants who were administered study intervention. Overall number analyzed is the number of participants with data available for analyses.

Participants were seated for at least 5 minutes, and breaths were counted for 30 seconds and multiplied by 2.

Outcome measures

Outcome measures
Measure
Placebo
n=47 Participants
Participants received matching placebo as superficial intramuscular injections administered to the platysma muscle on Day 1.
BOTOX® Low Dose
n=50 Participants
Participants received BOTOX® Low Dose as superficial intramuscular injections administered to the platysma muscle on Day 1.
BOTOX® High Dose
n=49 Participants
Participants received BOTOX® High Dose as superficial intramuscular injections administered to the platysma muscle on Day 1.
Change From Baseline in Respiratory Rate at Day 120
-0.7 breaths/min
Standard Deviation 1.71
-0.2 breaths/min
Standard Deviation 2.09
-0.3 breaths/min
Standard Deviation 1.85

SECONDARY outcome

Timeframe: Day 14

Population: mITT population included all randomized participants who had at least 1 post-baseline assessment of the primary efficacy parameter, the C-APPS, as described in the protocol. Overall number analyzed is the number of participants with data available for analyses.

The participants evaluated their own Platysma Prominence severity using a 5-grade scale where 1= minimal, and 5= extreme. Higher values indicate worsening conditions. Data is reported for participants who achieved at least a 1-grade improvement rated on the P-APPS. Percentages are rounded off to whole number at the nearest decimal. CMH chi-squared test was used for analysis.

Outcome measures

Outcome measures
Measure
Placebo
n=50 Participants
Participants received matching placebo as superficial intramuscular injections administered to the platysma muscle on Day 1.
BOTOX® Low Dose
n=54 Participants
Participants received BOTOX® Low Dose as superficial intramuscular injections administered to the platysma muscle on Day 1.
BOTOX® High Dose
n=51 Participants
Participants received BOTOX® High Dose as superficial intramuscular injections administered to the platysma muscle on Day 1.
Percentage of Participants With at Least a 1-Grade Improvement at Day 14 as Rated by Participant Using the Participant Allergan Platysma Prominence Scale (P-APPS)
18.0 percentage of participants
Interval 7.4 to 28.6
75.9 percentage of participants
Interval 64.5 to 87.3
88.2 percentage of participants
Interval 79.4 to 97.1

Adverse Events

Placebo

Serious events: 0 serious events
Other events: 10 other events
Deaths: 0 deaths

BOTOX® Low Dose

Serious events: 2 serious events
Other events: 6 other events
Deaths: 0 deaths

BOTOX® High Dose

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

Serious adverse events

Serious adverse events
Measure
Placebo
n=56 participants at risk
Participants received matching placebo as superficial intramuscular injections administered to the platysma muscle on Day 1.
BOTOX® Low Dose
n=59 participants at risk
Participants received BOTOX® Low Dose as superficial intramuscular injections administered to the platysma muscle on Day 1.
BOTOX® High Dose
n=54 participants at risk
Participants received BOTOX® High Dose as superficial intramuscular injections administered to the platysma muscle on Day 1.
Blood and lymphatic system disorders
THROMBOCYTOSIS
0.00%
0/56 • All cause mortality is reported from enrollment to end of study; median time on follow up was 128.0, 127.0 and 129.0 days for placebo, BOTOX low dose and BOTOX high dose, respectively. TEAEs and SAEs were collected from first dose of study drug until 120 days after last dose of study drug; mean duration on study drug was 1 day for placebo, BOTOX low dose and BOTOX high dose, respectively.
All-cause mortality: All participants randomized on Day 1. Serious and non-serious adverse events: Safety population included all participants who were administered study intervention.
1.7%
1/59 • Number of events 1 • All cause mortality is reported from enrollment to end of study; median time on follow up was 128.0, 127.0 and 129.0 days for placebo, BOTOX low dose and BOTOX high dose, respectively. TEAEs and SAEs were collected from first dose of study drug until 120 days after last dose of study drug; mean duration on study drug was 1 day for placebo, BOTOX low dose and BOTOX high dose, respectively.
All-cause mortality: All participants randomized on Day 1. Serious and non-serious adverse events: Safety population included all participants who were administered study intervention.
0.00%
0/54 • All cause mortality is reported from enrollment to end of study; median time on follow up was 128.0, 127.0 and 129.0 days for placebo, BOTOX low dose and BOTOX high dose, respectively. TEAEs and SAEs were collected from first dose of study drug until 120 days after last dose of study drug; mean duration on study drug was 1 day for placebo, BOTOX low dose and BOTOX high dose, respectively.
All-cause mortality: All participants randomized on Day 1. Serious and non-serious adverse events: Safety population included all participants who were administered study intervention.
Infections and infestations
APPENDICITIS
0.00%
0/56 • All cause mortality is reported from enrollment to end of study; median time on follow up was 128.0, 127.0 and 129.0 days for placebo, BOTOX low dose and BOTOX high dose, respectively. TEAEs and SAEs were collected from first dose of study drug until 120 days after last dose of study drug; mean duration on study drug was 1 day for placebo, BOTOX low dose and BOTOX high dose, respectively.
All-cause mortality: All participants randomized on Day 1. Serious and non-serious adverse events: Safety population included all participants who were administered study intervention.
1.7%
1/59 • Number of events 1 • All cause mortality is reported from enrollment to end of study; median time on follow up was 128.0, 127.0 and 129.0 days for placebo, BOTOX low dose and BOTOX high dose, respectively. TEAEs and SAEs were collected from first dose of study drug until 120 days after last dose of study drug; mean duration on study drug was 1 day for placebo, BOTOX low dose and BOTOX high dose, respectively.
All-cause mortality: All participants randomized on Day 1. Serious and non-serious adverse events: Safety population included all participants who were administered study intervention.
0.00%
0/54 • All cause mortality is reported from enrollment to end of study; median time on follow up was 128.0, 127.0 and 129.0 days for placebo, BOTOX low dose and BOTOX high dose, respectively. TEAEs and SAEs were collected from first dose of study drug until 120 days after last dose of study drug; mean duration on study drug was 1 day for placebo, BOTOX low dose and BOTOX high dose, respectively.
All-cause mortality: All participants randomized on Day 1. Serious and non-serious adverse events: Safety population included all participants who were administered study intervention.

Other adverse events

Other adverse events
Measure
Placebo
n=56 participants at risk
Participants received matching placebo as superficial intramuscular injections administered to the platysma muscle on Day 1.
BOTOX® Low Dose
n=59 participants at risk
Participants received BOTOX® Low Dose as superficial intramuscular injections administered to the platysma muscle on Day 1.
BOTOX® High Dose
n=54 participants at risk
Participants received BOTOX® High Dose as superficial intramuscular injections administered to the platysma muscle on Day 1.
General disorders
INJECTION SITE BRUISING
7.1%
4/56 • Number of events 4 • All cause mortality is reported from enrollment to end of study; median time on follow up was 128.0, 127.0 and 129.0 days for placebo, BOTOX low dose and BOTOX high dose, respectively. TEAEs and SAEs were collected from first dose of study drug until 120 days after last dose of study drug; mean duration on study drug was 1 day for placebo, BOTOX low dose and BOTOX high dose, respectively.
All-cause mortality: All participants randomized on Day 1. Serious and non-serious adverse events: Safety population included all participants who were administered study intervention.
6.8%
4/59 • Number of events 6 • All cause mortality is reported from enrollment to end of study; median time on follow up was 128.0, 127.0 and 129.0 days for placebo, BOTOX low dose and BOTOX high dose, respectively. TEAEs and SAEs were collected from first dose of study drug until 120 days after last dose of study drug; mean duration on study drug was 1 day for placebo, BOTOX low dose and BOTOX high dose, respectively.
All-cause mortality: All participants randomized on Day 1. Serious and non-serious adverse events: Safety population included all participants who were administered study intervention.
5.6%
3/54 • Number of events 3 • All cause mortality is reported from enrollment to end of study; median time on follow up was 128.0, 127.0 and 129.0 days for placebo, BOTOX low dose and BOTOX high dose, respectively. TEAEs and SAEs were collected from first dose of study drug until 120 days after last dose of study drug; mean duration on study drug was 1 day for placebo, BOTOX low dose and BOTOX high dose, respectively.
All-cause mortality: All participants randomized on Day 1. Serious and non-serious adverse events: Safety population included all participants who were administered study intervention.
General disorders
INJECTION SITE HAEMORRHAGE
5.4%
3/56 • Number of events 3 • All cause mortality is reported from enrollment to end of study; median time on follow up was 128.0, 127.0 and 129.0 days for placebo, BOTOX low dose and BOTOX high dose, respectively. TEAEs and SAEs were collected from first dose of study drug until 120 days after last dose of study drug; mean duration on study drug was 1 day for placebo, BOTOX low dose and BOTOX high dose, respectively.
All-cause mortality: All participants randomized on Day 1. Serious and non-serious adverse events: Safety population included all participants who were administered study intervention.
3.4%
2/59 • Number of events 2 • All cause mortality is reported from enrollment to end of study; median time on follow up was 128.0, 127.0 and 129.0 days for placebo, BOTOX low dose and BOTOX high dose, respectively. TEAEs and SAEs were collected from first dose of study drug until 120 days after last dose of study drug; mean duration on study drug was 1 day for placebo, BOTOX low dose and BOTOX high dose, respectively.
All-cause mortality: All participants randomized on Day 1. Serious and non-serious adverse events: Safety population included all participants who were administered study intervention.
1.9%
1/54 • Number of events 2 • All cause mortality is reported from enrollment to end of study; median time on follow up was 128.0, 127.0 and 129.0 days for placebo, BOTOX low dose and BOTOX high dose, respectively. TEAEs and SAEs were collected from first dose of study drug until 120 days after last dose of study drug; mean duration on study drug was 1 day for placebo, BOTOX low dose and BOTOX high dose, respectively.
All-cause mortality: All participants randomized on Day 1. Serious and non-serious adverse events: Safety population included all participants who were administered study intervention.
Infections and infestations
NASOPHARYNGITIS
5.4%
3/56 • Number of events 3 • All cause mortality is reported from enrollment to end of study; median time on follow up was 128.0, 127.0 and 129.0 days for placebo, BOTOX low dose and BOTOX high dose, respectively. TEAEs and SAEs were collected from first dose of study drug until 120 days after last dose of study drug; mean duration on study drug was 1 day for placebo, BOTOX low dose and BOTOX high dose, respectively.
All-cause mortality: All participants randomized on Day 1. Serious and non-serious adverse events: Safety population included all participants who were administered study intervention.
0.00%
0/59 • All cause mortality is reported from enrollment to end of study; median time on follow up was 128.0, 127.0 and 129.0 days for placebo, BOTOX low dose and BOTOX high dose, respectively. TEAEs and SAEs were collected from first dose of study drug until 120 days after last dose of study drug; mean duration on study drug was 1 day for placebo, BOTOX low dose and BOTOX high dose, respectively.
All-cause mortality: All participants randomized on Day 1. Serious and non-serious adverse events: Safety population included all participants who were administered study intervention.
1.9%
1/54 • Number of events 1 • All cause mortality is reported from enrollment to end of study; median time on follow up was 128.0, 127.0 and 129.0 days for placebo, BOTOX low dose and BOTOX high dose, respectively. TEAEs and SAEs were collected from first dose of study drug until 120 days after last dose of study drug; mean duration on study drug was 1 day for placebo, BOTOX low dose and BOTOX high dose, respectively.
All-cause mortality: All participants randomized on Day 1. Serious and non-serious adverse events: Safety population included all participants who were administered study intervention.
Musculoskeletal and connective tissue disorders
MUSCULAR WEAKNESS
0.00%
0/56 • All cause mortality is reported from enrollment to end of study; median time on follow up was 128.0, 127.0 and 129.0 days for placebo, BOTOX low dose and BOTOX high dose, respectively. TEAEs and SAEs were collected from first dose of study drug until 120 days after last dose of study drug; mean duration on study drug was 1 day for placebo, BOTOX low dose and BOTOX high dose, respectively.
All-cause mortality: All participants randomized on Day 1. Serious and non-serious adverse events: Safety population included all participants who were administered study intervention.
0.00%
0/59 • All cause mortality is reported from enrollment to end of study; median time on follow up was 128.0, 127.0 and 129.0 days for placebo, BOTOX low dose and BOTOX high dose, respectively. TEAEs and SAEs were collected from first dose of study drug until 120 days after last dose of study drug; mean duration on study drug was 1 day for placebo, BOTOX low dose and BOTOX high dose, respectively.
All-cause mortality: All participants randomized on Day 1. Serious and non-serious adverse events: Safety population included all participants who were administered study intervention.
11.1%
6/54 • Number of events 10 • All cause mortality is reported from enrollment to end of study; median time on follow up was 128.0, 127.0 and 129.0 days for placebo, BOTOX low dose and BOTOX high dose, respectively. TEAEs and SAEs were collected from first dose of study drug until 120 days after last dose of study drug; mean duration on study drug was 1 day for placebo, BOTOX low dose and BOTOX high dose, respectively.
All-cause mortality: All participants randomized on Day 1. Serious and non-serious adverse events: Safety population included all participants who were administered study intervention.

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