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Study of BEMA™ Fentanyl in the Treatment of Breakthrough Pain in Cancer Subjects

A Double-blind, Placebo Controlled Evaluation of the Efficacy, Safety and Tolerability of BEMA™ Fentanyl in the Treatment of Breakthrough Pain in Cancer Subjects

Status
Completed
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT00293033
Enrollment
152
Registered
2006-02-17
Start date
2006-02-28
Completion date
2007-04-30
Last updated
2019-11-18

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

Conditions

Cancer, Pain

Keywords

Breakthrough Pain in Patients with Cancer

Brief summary

The purpose of this study is to evaluate the efficacy of BEMA Fentanyl (Onsolis) at any dose in the management of breakthrough pain in cancer subjects on background opioid therapy. The standard of care for these breakthrough pain episodes is a rapid onset, short acting analgesic with minimal associated sleepiness. Oral morphine, oxycodone and hydromorphone are routinely used, but because of slow and variable oral absorption, the pain control is not the best with these products. Oral transmucosal fentanyl citrate (OTFC) has been used successfully in treating breakthrough pain episodes associated with cancer. OTFC is a lozenge of fentanyl on a stick and is administered by continuously swabbing the interior of the subject's mouth until the product is dissolved (approximately 15 to 30 minutes). The buccal route of administration avoids the delay and variability associated with oral absorption.

Detailed description

This is a randomized, double-blind, placebo controlled, multiple cross-over study. Eligible subjects will be treated with open label BEMA fentanyl over a period of up to two weeks. Doses will be titrated upward, starting at 200 μg, until a dose is identified that produces satisfactory pain relief for at least 2 episodes. Those subjects who identify a dose of BEMA fentanyl that produces satisfactory relief of breakthrough pain episodes will enter the double-blind, placebo controlled period of the trial. They will receive 3 placebo doses and 6 BEMA fentanyl doses in a random sequence per randomization schedule.

Interventions

DRUGBEMA™

BioDelivery Sciences International, Inc. (BDSI) has developed BioErodible MucoAdhesive (BEMA) Fentanyl, an alternative product to OTFC that does not require the subject to continuously paint the inside of the mouth with the dosage form. The BDSI product is a small soluble film that is placed against the mucosal membrane inside the mouth. The mucoadhesive polymers in the film readily adhere to the mucosal membrane (within 5 seconds) when moistened. The components of the film are water soluble, so the entire dosage form dissolves within 30 minutes of application.

DRUGPlacebo

Sponsors

BioDelivery Sciences International
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
TREATMENT
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)

Eligibility

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

Inclusion criteria

* Male or non-pregnant and non-lactating female. A female of child-bearing potential is eligible to participate in this study if she is using an acceptable method of birth control. * 18 years or older * Patient must have pain associated with cancer or cancer treatment. * Patient must be on a stable current regimen of oral opioids equivalent to 60 - 1000 mg/day of oral morphine or 50 - 300 µg/hr of transdermal fentanyl (e.g. oxycodone 30 mg, methadone 20 mg, and hydromorphone 7.5 mg). * Regularly experiences 1 - 4 breakthrough pain episodes per day that require additional opioids for pain control * At least partial relief of breakthrough pain by use of opioid therapy * Subject must be able to self-administer the study medication correctly. * Subject must be willing and able to complete the electronic diary card with each pain episode. * Signed consent must be obtained at screening prior to any procedures being performed.

Exclusion criteria

* Psychiatric/cognitive or neurological impairment that would limit the subject's ability to understand or complete the diary * Cardiopulmonary disease that, in the opinion of the investigator, would significantly increase the risk of respiratory depression * Recent history or current evidence of alcohol or other drug substance (licit or illicit) abuse * Rapidly escalating pain that the investigator believes may require an increase in the dosage of background pain medication during the study * Moderate (Grade 3) to severe (Grade 4) mucositis (Subjects with less than moderate mucositis are permitted and must be instructed to not apply the BEMA disc at a site of inflammation.) * Strontium 89 therapy within the previous 6 months * Any other therapy prior to the study that the investigator considers could alter pain or the response to pain medication. * Use of an investigational drug within 4 weeks preceding this study * History of hypersensitivity or intolerance to fentanyl * Regularly more than 4 episodes per day * Eastern Cooperative Oncology Group (ECOG) performance status of 4 or 5 * Subject is pregnant, actively trying to become pregnant, breast feeding or not using adequate contraceptive measures

Design outcomes

Primary

MeasureTime frameDescription
Summary of Pain Intensity Differences (SPID)0-30 minutesPain intensity (using an 11-point \[0 = no pain to 10 = worst pain\] numeric scale) was recorded at 0, 5, 10, 15, 30, 45, and 60 minutes after dosing. Pain intensity difference (PID) was defined as the baseline pain score minus the pain score of each time point. The primary endpoint was the Summary of Pain Intensity Differences at 30 minutes after dosing (SPID 30) in ITT population for Onsolis versus placebo during double-blind period of study. SPID was calculated as a weighted sum of the PID of all time points at or before time point of interest.Range of possible SPID values is -10X time point (minutes) to 10X time point (minutes). Higher value indicates a better outcome.

Secondary

MeasureTime frameDescription
SPID0-5 minutesPain intensity (using an 11-point \[0 = no pain to 10 = worst pain\] numeric scale) was recorded at 0, 5, 10, 15, 30, 45, and 60 minutes after dosing. Pain intensity difference (PID) was defined as the baseline pain score minus the pain score of each time point. The primary endpoint was the Summary of Pain Intensity Differences at 30 minutes after dosing (SPID 30) in ITT population for Onsolis versus placebo during double-blind period of study. SPID was calculated as a weighted sum of the PID of all time points at or before time point of interest.Range of possible SPID values is -10X time point (minutes) to 10X time point (minutes). Higher value indicates a better outcome.SPID was calculated as a weighted sum of the pain intensity difference of all time points at or before the time point of interest.
PID5 minutes after dosingPain intensity (using an 11-point \[0 = no pain to 10 = worst pain\] numeric scale) was recorded at 0, 5, 10, 15, 30, 45, and 60 minutes after dosing. Pain intensity difference (PID) was defined as the baseline pain score minus the pain score of each time point.
Pain Relief5 minutes after dosingPain relief (PR) is measured using a 5-point categorical scale (0=no relief to 4=complete relief) at 5, 10, 15, 30, 45, and 60 minutes after taking the study medication or until rescue.
Total Pain Relief5 minutesTotal Pain Relief (TOTPAR) is calculated as the weighted sum of the pain relief (PR) of all time points at or prior to the time point of interest.Pain relief (PR) is measured using a 5-point categorical scale (0=no relief to 4=complete relief)compared to baseline (pre-dose)
Subject Overall Satisfaction With Study Drug60 minutes or at time of rescue medication useSubjects evaluated their overall satisfaction with study drug at the time rescue medication was consumed or at the 60-minute time point using a 5-point categorical scale (0 = poor, 1 = fair, 2 = good, 3 = very good, and 4 = excellent).
Episodes With at Least 50% Decreases in Pain15 minutesNumber of episodes where the total pain score has at least a 50% reduction from baseline.
Episodes With at Least 33% Decreases in Pain15 minutesNumber of episodes where the total pain score has at least a 33% reduction from baseline.
Episodes With Complete Pain Relief5 minutesPain relief (PR) is measured using a 5-point categorical scale (0=no relief to 4=complete relief). Percentage of episodes with complete relief per subject is analyzed where a complete pain relief episode is defined as pain relief of value 4 at the specified time point.
Rescue Medication Usage28 DaysRescue medication is medication taken if adequate pain relief is not realized within 30 minutes following application of the study drug. Percentage of episodes when rescue medication was used per subject is analyzed.
Percentage of Pain Free Episodes5 minutesA pain free episode is one with 0 pain intensity at the specified time point. Percentage of episodes that are pain-free per subject is analyzed.

Other

MeasureTime frameDescription
SPID in Neuropathic Pain Subpopulation15 minutesPain intensity (using an 11-point \[0 = no pain to 10 = worst pain\] numeric scale) was recorded at 0, 5, 10, 15, 30, 45, and 60 minutes after dosing. Pain intensity difference (PID) was defined as the baseline pain score minus the pain score of each time point. The primary endpoint was the Summary of Pain Intensity Differences at 30 minutes after dosing (SPID 30) in ITT population for Onsolis versus placebo during double-blind period of study. SPID was calculated as a weighted sum of the PID of all time points at or before time point of interest.Range of possible SPID values is -10X time point (minutes) to 10X time point (minutes). Higher value indicates a better outcome. SPID was calculated as a weighted sum of the pain intensity difference of all time points at or before the time point of interest for the Neuropathic pain subpopulation for relevant time points (15, 30, 45, 60 minutes). Neuropathic pain subpopulation is a subset of ITT population who have neuropathic pain at baseline.

Countries

United States

Participant flow

Recruitment details

24FEB2006 to 14MAR2007

Pre-assignment details

During the open-label titration period, subjects were treated with Onsolis at escalating doses (200, 400, 600, 800, and 1200 μg) over a period of up to two weeks until subjects identified a dose that produced satisfactory pain relief for at least two episodes.

Participants by arm

ArmCount
Onsolis
Includes all subjects and all dose levels
151
Total151

Withdrawals & dropouts

PeriodReasonFG000
Double-blind Treatment PeriodAdverse Event3
Double-blind Treatment PeriodLack of Efficacy1
Double-blind Treatment PeriodNoncompliance4
Double-blind Treatment PeriodWithdrawal by Subject4
Open-label Titration PeriodAdverse Event10
Open-label Titration PeriodDeath3
Open-label Titration PeriodLack of Efficacy5
Open-label Titration PeriodNoncompliance and other27
Open-label Titration PeriodProtocol Violation2
Open-label Titration PeriodWithdrawal by Subject22

Baseline characteristics

CharacteristicOnsolis
Age, Categorical
<=18 years
0 Participants
Age, Categorical
>=65 years
47 Participants
Age, Categorical
Between 18 and 65 years
104 Participants
Age, Continuous57.1 years
STANDARD_DEVIATION 12.2
Female reproductive status
Male
67 Participants
Female reproductive status
Post-menopausal
43 Participants
Female reproductive status
Potentially able to bear children
3 Participants
Female reproductive status
Sterile
38 Participants
Height (inches)66.4 Inches
STANDARD_DEVIATION 3.86
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
Race (NIH/OMB)
Asian
1 Participants
Race (NIH/OMB)
Black or African American
12 Participants
Race (NIH/OMB)
More than one race
0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants
Race (NIH/OMB)
Unknown or Not Reported
7 Participants
Race (NIH/OMB)
White
131 Participants
Region of Enrollment
United States
151 participants
Sex: Female, Male
Female
85 Participants
Sex: Female, Male
Male
66 Participants
Weight (pounds)160.89 pounds
STANDARD_DEVIATION 42.011

Adverse events

Event typeEG000
affected / at risk
deaths
Total, all-cause mortality
— / —
other
Total, other adverse events
44 / 151
serious
Total, serious adverse events
23 / 151

Outcome results

Primary

Summary of Pain Intensity Differences (SPID)

Pain intensity (using an 11-point \[0 = no pain to 10 = worst pain\] numeric scale) was recorded at 0, 5, 10, 15, 30, 45, and 60 minutes after dosing. Pain intensity difference (PID) was defined as the baseline pain score minus the pain score of each time point. The primary endpoint was the Summary of Pain Intensity Differences at 30 minutes after dosing (SPID 30) in ITT population for Onsolis versus placebo during double-blind period of study. SPID was calculated as a weighted sum of the PID of all time points at or before time point of interest.Range of possible SPID values is -10X time point (minutes) to 10X time point (minutes). Higher value indicates a better outcome.

Time frame: 0-30 minutes

Population: In double-blind period, subjects received 3 doses placebo and 6 doses Onsolis. Mean SPID of Onsolis episodes and mean SPID of placebo episodes are calculated per subject and are used in analysis.Missing data were imputed on an episode-by-episode basis by carrying forward last observed data value (last observation carried forward \[LOCF\]).

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
OnsolisSummary of Pain Intensity Differences (SPID)47.9 Score on a scaleStandard Error 3.87
PlaceboSummary of Pain Intensity Differences (SPID)38.1 Score on a scaleStandard Error 4.3
p-value: 0.00495% CI: [3.31, 16.18]Mixed Models Analysis
Secondary

Episodes With at Least 33% Decreases in Pain

Number of episodes where the total pain score has at least a 33% reduction from baseline.

Time frame: 15 minutes

Population: During the double-blind period, subjects received 3 doses of placebo and 6 doses of Onsolis.~All efficacy analyses were conducted using the intent-to-treat (ITT) population.~Last observation carried forward (LOCF) is used to impute missing data or data after rescue medication usage.

ArmMeasureValue (MEAN)Dispersion
OnsolisEpisodes With at Least 33% Decreases in Pain26.4 episodesStandard Error 3.55
PlaceboEpisodes With at Least 33% Decreases in Pain21.3 episodesStandard Error 3.66
p-value: 0.1Wilcoxon (Mann-Whitney)
Secondary

Episodes With at Least 33% Decreases in Pain

Number of episodes where the total pain score has at least a 33% reduction from baseline.

Time frame: 30 minutes

Population: During the double-blind period, subjects received 3 doses of placebo and 6 doses of Onsolis.~All efficacy analyses were conducted using the intent-to-treat (ITT) population.~Last observation carried forward (LOCF) is used to impute missing data or data after rescue medication usage.

ArmMeasureValue (MEAN)Dispersion
OnsolisEpisodes With at Least 33% Decreases in Pain47.3 episodesStandard Error 4.05
PlaceboEpisodes With at Least 33% Decreases in Pain38.2 episodesStandard Error 4.45
p-value: 0.009Wilcoxon (Mann-Whitney)
Secondary

Episodes With at Least 33% Decreases in Pain

Number of episodes where the total pain score has at least a 50% reduction from baseline.

Time frame: 60 minutes

Population: During the double-blind period, subjects received 3 doses of placebo and 6 doses of Onsolis.~All efficacy analyses were conducted using the intent-to-treat (ITT) population.~Last observation carried forward (LOCF) is used to impute missing data or data after rescue medication usage.

ArmMeasureValue (MEAN)Dispersion
OnsolisEpisodes With at Least 33% Decreases in Pain64.3 episodesStandard Error 3.72
PlaceboEpisodes With at Least 33% Decreases in Pain48.2 episodesStandard Error 4.51
p-value: <0.001Wilcoxon (Mann-Whitney)
Secondary

Episodes With at Least 33% Decreases in Pain

Number of episodes where the total pain score has at least a 33% reduction from baseline.

Time frame: 45 minutes

Population: During the double-blind period, subjects received 3 doses of placebo and 6 doses of Onsolis.~All efficacy analyses were conducted using the intent-to-treat (ITT) population.~Last observation carried forward (LOCF) is used to impute missing data or data after rescue medication usage.

ArmMeasureValue (MEAN)Dispersion
OnsolisEpisodes With at Least 33% Decreases in Pain57.5 episodesStandard Error 3.93
PlaceboEpisodes With at Least 33% Decreases in Pain46.5 episodesStandard Error 4.5
p-value: 0.004Wilcoxon (Mann-Whitney)
Secondary

Episodes With at Least 50% Decreases in Pain

Number of episodes where the total pain score has at least a 50% reduction from baseline.

Time frame: 30 minutes

Population: During the double-blind period, subjects received 3 doses of placebo and 6 doses of Onsolis.~All efficacy analyses were conducted using the intent-to-treat (ITT) population.~Last observation carried forward (LOCF) is used to impute missing data or data after rescue medication usage.

ArmMeasureValue (MEAN)Dispersion
OnsolisEpisodes With at Least 50% Decreases in Pain32.8 episodesStandard Error 3.78
PlaceboEpisodes With at Least 50% Decreases in Pain24.1 episodesStandard Error 3.87
p-value: 0.002Wilcoxon (Mann-Whitney)
Secondary

Episodes With at Least 50% Decreases in Pain

Number of episodes where the total pain score has at least a 50% reduction from baseline.

Time frame: 45 minutes

Population: During the double-blind period, subjects received 3 doses of placebo and 6 doses of Onsolis.~All efficacy analyses were conducted using the intent-to-treat (ITT) population.~Last observation carried forward (LOCF) is used to impute missing data or data after rescue medication usage.

ArmMeasureValue (MEAN)Dispersion
OnsolisEpisodes With at Least 50% Decreases in Pain41.1 episodesStandard Error 4.11
PlaceboEpisodes With at Least 50% Decreases in Pain30.5 episodesStandard Error 4.1
p-value: 0.008Wilcoxon (Mann-Whitney)
Secondary

Episodes With at Least 50% Decreases in Pain

Number of episodes where the total pain score has at least a 50% reduction from baseline.

Time frame: 60 minutes

Population: During the double-blind period, subjects received 3 doses of placebo and 6 doses of Onsolis.~All efficacy analyses were conducted using the intent-to-treat (ITT) population.~Last observation carried forward (LOCF) is used to impute missing data or data after rescue medication usage.

ArmMeasureValue (MEAN)Dispersion
OnsolisEpisodes With at Least 50% Decreases in Pain46.1 episodesStandard Error 4.17
PlaceboEpisodes With at Least 50% Decreases in Pain34.0 episodesStandard Error 4.3
p-value: 0.005Wilcoxon (Mann-Whitney)
Secondary

Episodes With at Least 50% Decreases in Pain

Number of episodes where the total pain score has at least a 50% reduction from baseline.

Time frame: 15 minutes

Population: During the double-blind period, subjects received 3 doses of placebo and 6 doses of Onsolis.~All efficacy analyses were conducted using the intent-to-treat (ITT) population.~Last observation carried forward (LOCF) is used to impute missing data or data after rescue medication usage.

ArmMeasureValue (MEAN)Dispersion
OnsolisEpisodes With at Least 50% Decreases in Pain14.9 episodesStandard Error 2.81
PlaceboEpisodes With at Least 50% Decreases in Pain14.7 episodesStandard Error 3.35
p-value: 0.963Wilcoxon (Mann-Whitney)
Secondary

Episodes With Complete Pain Relief

Pain relief (PR) is measured using a 5-point categorical scale (0=no relief to 4=complete relief). Percentage of episodes with complete relief per subject is analyzed where a complete pain relief episode is defined as pain relief of value 4 at the specified time point.

Time frame: 45 minutes

Population: All efficacy analyses were conducted using the intent-to-treat (ITT) population.

ArmMeasureValue (MEAN)Dispersion
OnsolisEpisodes With Complete Pain Relief9.4 percentage of episodesStandard Error 2.18
PlaceboEpisodes With Complete Pain Relief6.4 percentage of episodesStandard Error 2.27
p-value: 0.131Wilcoxon (Mann-Whitney)
Secondary

Episodes With Complete Pain Relief

Pain relief (PR) is measured using a 5-point categorical scale (0=no relief to 4=complete relief).Percentage of episodes with complete relief per subject is analyzed where a complete pain relief episode is defined as pain relief of value 4 at the specified time point.

Time frame: 15 minutes

Population: All efficacy analyses were conducted using the intent-to-treat (ITT) population.

ArmMeasureValue (MEAN)Dispersion
OnsolisEpisodes With Complete Pain Relief1.7 percentage of episodesStandard Error 0.83
PlaceboEpisodes With Complete Pain Relief1.3 percentage of episodesStandard Error 0.94
p-value: 0.75Wilcoxon (Mann-Whitney)
Secondary

Episodes With Complete Pain Relief

Pain relief (PR) is measured using a 5-point categorical scale (0=no relief to 4=complete relief).Percentage of episodes with complete relief per subject is analyzed where a complete pain relief episode is defined as pain relief of value 4 at the specified time point.

Time frame: 10 minutes

Population: All efficacy analyses were conducted using the intent-to-treat (ITT) population.

ArmMeasureValue (MEAN)Dispersion
OnsolisEpisodes With Complete Pain Relief1.0 percentage of episodesStandard Error 0.72
PlaceboEpisodes With Complete Pain Relief0.7 percentage of episodesStandard Error 0.68
p-value: 1Wilcoxon (Mann-Whitney)
Secondary

Episodes With Complete Pain Relief

Pain relief (PR) is measured using a 5-point categorical scale (0=no relief to 4=complete relief). Percentage of episodes with complete relief per subject is analyzed where a complete pain relief episode is defined as pain relief of value 4 at the specified time point.

Time frame: 5 minutes

Population: All efficacy analyses were conducted using the intent-to-treat (ITT) population.

ArmMeasureValue (MEAN)Dispersion
OnsolisEpisodes With Complete Pain Relief0.7 percentage of episodesStandard Error 0.66
PlaceboEpisodes With Complete Pain Relief0.7 percentage of episodesStandard Error 0.68
p-value: 1Wilcoxon (Mann-Whitney)
Secondary

Episodes With Complete Pain Relief

Pain relief (PR) is measured using a 5-point categorical scale (0=no relief to 4=complete relief). Percentage of episodes with complete relief per subject is analyzed where a complete pain relief episode is defined as pain relief of value 4 at the specified time point.

Time frame: 60 minutes

Population: All efficacy analyses were conducted using the intent-to-treat (ITT) population.

ArmMeasureValue (MEAN)Dispersion
OnsolisEpisodes With Complete Pain Relief12.8 percentage of episodesStandard Error 2.49
PlaceboEpisodes With Complete Pain Relief7.2 percentage of episodesStandard Error 2.4
p-value: 0.007Wilcoxon (Mann-Whitney)
Secondary

Episodes With Complete Pain Relief

Pain relief (PR) is measured using a 5-point categorical scale (0=no relief to 4=complete relief). Percentage of episodes with complete relief per subject is analyzed where a complete pain relief episode is defined as pain relief of value 4 at the specified time point.

Time frame: 30 minutes

Population: All efficacy analyses were conducted using the intent-to-treat (ITT) population.

ArmMeasureValue (MEAN)Dispersion
OnsolisEpisodes With Complete Pain Relief5.4 percentage of episodesStandard Error 1.63
PlaceboEpisodes With Complete Pain Relief2.6 percentage of episodesStandard Error 1.33
p-value: 0.032Wilcoxon (Mann-Whitney)
Secondary

Pain Relief

Pain relief (PR) is measured using a 5-point categorical scale (0=no relief to 4=complete relief) at 5, 10, 15, 30, 45, and 60 minutes after taking the study medication or until rescue.

Time frame: 5 minutes after dosing

Population: During the double-blind period, subjects received 3 doses of placebo and 6 doses of Onsolis.~All efficacy analyses were conducted using the intent-to-treat (ITT) population.~Last observation carried forward (LOCF) is used to impute missing data or data after rescue medication usage.

ArmMeasureValue (MEAN)Dispersion
OnsolisPain Relief0.4 Scores on a scaleStandard Error 0.04
PlaceboPain Relief0.4 Scores on a scaleStandard Error 0.06
p-value: 0.193Wilcoxon (Mann-Whitney)
Secondary

Pain Relief

Pain relief (PR) is measured using a 5-point categorical scale (0=no relief to 4=complete relief) at 5, 10, 15, 30, 45, and 60 minutes after taking the study medication or until rescue.

Time frame: 10 minutes after dosing

Population: During the double-blind period, subjects received 3 doses of placebo and 6 doses of Onsolis.~All efficacy analyses were conducted using the intent-to-treat (ITT) population.~Last observation carried forward (LOCF) is used to impute missing data or data after rescue medication usage.

ArmMeasureValue (MEAN)Dispersion
OnsolisPain Relief0.8 Scores on a scaleStandard Error 0.05
PlaceboPain Relief0.7 Scores on a scaleStandard Error 0.06
p-value: 0.113Wilcoxon (Mann-Whitney)
Secondary

Pain Relief

Pain relief (PR) is measured using a 5-point categorical scale (0=no relief to 4=complete relief) at 5, 10, 15, 30, 45, and 60 minutes after taking the study medication or until rescue.

Time frame: 15 minutes after dosing

Population: During the double-blind period, subjects received 3 doses of placebo and 6 doses of Onsolis.~All efficacy analyses were conducted using the intent-to-treat (ITT) population.~Last observation carried forward (LOCF) is used to impute missing data or data after rescue medication usage.

ArmMeasureValue (MEAN)Dispersion
OnsolisPain Relief1.1 Scores on a scaleStandard Error 0.05
PlaceboPain Relief1.0 Scores on a scaleStandard Error 0.07
p-value: 0.192Wilcoxon (Mann-Whitney)
Secondary

Pain Relief

Pain relief (PR) is measured using a 5-point categorical scale (0=no relief to 4=complete relief) at 5, 10, 15, 30, 45, and 60 minutes after taking the study medication or until rescue.

Time frame: 30 minutes after dosing

Population: During the double-blind period, subjects received 3 doses of placebo and 6 doses of Onsolis.~All efficacy analyses were conducted using the intent-to-treat (ITT) population.~Last observation carried forward (LOCF) is used to impute missing data or data after rescue medication usage.

ArmMeasureValue (MEAN)Dispersion
OnsolisPain Relief1.7 Scores on a scaleStandard Error 0.05
PlaceboPain Relief1.3 Scores on a scaleStandard Error 0.08
p-value: 0.002Wilcoxon (Mann-Whitney)
Secondary

Pain Relief

Pain relief (PR) is measured using a 5-point categorical scale (0=no relief to 4=complete relief) at 5, 10, 15, 30, 45, and 60 minutes after taking the study medication or until rescue.

Time frame: 45 minutes after dosing

Population: During the double-blind period, subjects received 3 doses of placebo and 6 doses of Onsolis.~All efficacy analyses were conducted using the intent-to-treat (ITT) population.~Last observation carried forward (LOCF) is used to impute missing data or data after rescue medication usage.

ArmMeasureValue (MEAN)Dispersion
OnsolisPain Relief1.9 Scores on a scaleStandard Error 0.06
PlaceboPain Relief1.5 Scores on a scaleStandard Error 0.09
p-value: 0.002Wilcoxon (Mann-Whitney)
Secondary

Pain Relief

Pain relief (PR) is measured using a 5-point categorical scale (0=no relief to 4=complete relief) at 5, 10, 15, 30, 45, and 60 minutes after taking the study medication or until rescue.

Time frame: 60 minutes after dosing

Population: During the double-blind period, subjects received 3 doses of placebo and 6 doses of Onsolis.~All efficacy analyses were conducted using the intent-to-treat (ITT) population.~Last observation carried forward (LOCF) is used to impute missing data or data after rescue medication usage.

ArmMeasureValue (MEAN)Dispersion
OnsolisPain Relief2.1 Scores on a scaleStandard Error 0.06
PlaceboPain Relief1.6 Scores on a scaleStandard Error 0.09
p-value: <0.001Wilcoxon (Mann-Whitney)
Secondary

Percentage of Pain Free Episodes

A pain free episode is one with 0 pain intensity at the specified time point. Percentage of episodes that are pain-free per subject is analyzed.

Time frame: 10 minutes

Population: During the double-blind period, subjects received 3 doses of placebo and 6 doses of Onsolis.~All efficacy analyses were conducted using the intent-to-treat (ITT) population.~Last observation carried forward (LOCF) is used to impute missing data or data after rescue medication usage.

ArmMeasureValue (MEAN)Dispersion
OnsolisPercentage of Pain Free Episodes1.0 percentage of episodesStandard Error 0.72
PlaceboPercentage of Pain Free Episodes1.4 percentage of episodesStandard Error 1.35
p-value: 1Wilcoxon (Mann-Whitney)
Secondary

Percentage of Pain Free Episodes

A pain free episode is one with 0 pain intensity at the specified time point. Percentage of episodes that are pain-free per subject is analyzed.

Time frame: 15 minutes

Population: During the double-blind period, subjects received 3 doses of placebo and 6 doses of Onsolis.~All efficacy analyses were conducted using the intent-to-treat (ITT) population.~Last observation carried forward (LOCF) is used to impute missing data or data after rescue medication usage.

ArmMeasureValue (MEAN)Dispersion
OnsolisPercentage of Pain Free Episodes2.3 percentage of episodesStandard Error 1.02
PlaceboPercentage of Pain Free Episodes2.0 percentage of episodesStandard Error 1.48
p-value: 0.563Wilcoxon (Mann-Whitney)
Secondary

Percentage of Pain Free Episodes

A pain free episode is one with 0 pain intensity at the specified time point. Percentage of episodes that are pain-free per subject is analyzed.

Time frame: 30 minutes

Population: During the double-blind period, subjects received 3 doses of placebo and 6 doses of Onsolis.~All efficacy analyses were conducted using the intent-to-treat (ITT) population.~Last observation carried forward (LOCF) is used to impute missing data or data after rescue medication usage.

ArmMeasureValue (MEAN)Dispersion
OnsolisPercentage of Pain Free Episodes5.3 percentage of episodesStandard Error 1.57
PlaceboPercentage of Pain Free Episodes4.4 percentage of episodesStandard Error 1.88
p-value: 0.498Wilcoxon (Mann-Whitney)
Secondary

Percentage of Pain Free Episodes

A pain free episode is one with 0 pain intensity at the specified time point. Percentage of episodes that are pain-free per subject is analyzed.

Time frame: 45 minutes

Population: During the double-blind period, subjects received 3 doses of placebo and 6 doses of Onsolis.~All efficacy analyses were conducted using the intent-to-treat (ITT) population.~Last observation carried forward (LOCF) is used to impute missing data or data after rescue medication usage.

ArmMeasureValue (MEAN)Dispersion
OnsolisPercentage of Pain Free Episodes10.5 percentage of episodesStandard Error 2.34
PlaceboPercentage of Pain Free Episodes6.4 percentage of episodesStandard Error 2.27
p-value: 0.077Wilcoxon (Mann-Whitney)
Secondary

Percentage of Pain Free Episodes

A pain free episode is one with 0 pain intensity at the specified time point. Percentage of episodes that are pain-free per subject is analyzed.

Time frame: 60 minutes

Population: During the double-blind period, subjects received 3 doses of placebo and 6 doses of Onsolis.~All efficacy analyses were conducted using the intent-to-treat (ITT) population.~Last observation carried forward (LOCF) is used to impute missing data or data after rescue medication usage.

ArmMeasureValue (MEAN)Dispersion
OnsolisPercentage of Pain Free Episodes14.2 percentage of episodesStandard Error 2.62
PlaceboPercentage of Pain Free Episodes9.6 percentage of episodesStandard Error 2.9
p-value: 0.031Wilcoxon (Mann-Whitney)
Secondary

Percentage of Pain Free Episodes

A pain free episode is one with 0 pain intensity at the specified time point. Percentage of episodes that are pain-free per subject is analyzed.

Time frame: 5 minutes

Population: During the double-blind period, subjects received 3 doses of placebo and 6 doses of Onsolis.~All efficacy analyses were conducted using the intent-to-treat (ITT) population, however, only available data is summarized here.

ArmMeasureValue (MEAN)Dispersion
OnsolisPercentage of Pain Free Episodes1.0 percentage of episodesStandard Error 0.73
PlaceboPercentage of Pain Free Episodes1.4 percentage of episodesStandard Error 1.37
p-value: 1Wilcoxon (Mann-Whitney)
Secondary

PID

Pain intensity (using an 11-point \[0 = no pain to 10 = worst pain\] numeric scale) was recorded at 0, 5, 10, 15, 30, 45, and 60 minutes after dosing. Pain intensity difference (PID) was defined as the baseline pain score minus the pain score of each time point.

Time frame: 15 minutes after dosing

ArmMeasureValue (MEAN)Dispersion
OnsolisPID1.4 Scores on a scaleStandard Error 0.09
PlaceboPID1.2 Scores on a scaleStandard Error 0.1
p-value: 0.223Wilcoxon (Mann-Whitney)
Secondary

PID

Pain intensity (using an 11-point \[0 = no pain to 10 = worst pain\] numeric scale) was recorded at 0, 5, 10, 15, 30, 45, and 60 minutes after dosing. Pain intensity difference (PID) was defined as the baseline pain score minus the pain score of each time point.

Time frame: 45 minutes after dosing

ArmMeasureValue (MEAN)Dispersion
OnsolisPID3.0 Scores on a scaleStandard Error 0.13
PlaceboPID2.3 Scores on a scaleStandard Error 0.17
p-value: 0.001Wilcoxon (Mann-Whitney)
Secondary

PID

Pain intensity (using an 11-point \[0 = no pain to 10 = worst pain\] numeric scale) was recorded at 0, 5, 10, 15, 30, 45, and 60 minutes after dosing. Pain intensity difference (PID) was defined as the baseline pain score minus the pain score of each time point.

Time frame: 30 minutes after dosing

ArmMeasureValue (MEAN)Dispersion
OnsolisPID2.5 Scores on a scaleStandard Error 0.11
PlaceboPID1.9 Scores on a scaleStandard Error 0.14
p-value: 0.015Wilcoxon (Mann-Whitney)
Secondary

PID

Pain intensity (using an 11-point \[0 = no pain to 10 = worst pain\] numeric scale) was recorded at 0, 5, 10, 15, 30, 45, and 60 minutes after dosing. Pain intensity difference (PID) was defined as the baseline pain score minus the pain score of each time point.

Time frame: 60 minutes after dosing

ArmMeasureValue (MEAN)Dispersion
OnsolisPID3.3 Scores on a scaleStandard Error 0.13
PlaceboPID2.4 Scores on a scaleStandard Error 0.18
p-value: <0.001Wilcoxon (Mann-Whitney)
Secondary

PID

Pain intensity (using an 11-point \[0 = no pain to 10 = worst pain\] numeric scale) was recorded at 0, 5, 10, 15, 30, 45, and 60 minutes after dosing. Pain intensity difference (PID) was defined as the baseline pain score minus the pain score of each time point.

Time frame: 10 minutes after dosing

ArmMeasureValue (MEAN)Dispersion
OnsolisPID0.8 Scores on a scaleStandard Error 0.07
PlaceboPID0.7 Scores on a scaleStandard Error 0.08
p-value: 0.458Wilcoxon (Mann-Whitney)
Secondary

PID

Pain intensity (using an 11-point \[0 = no pain to 10 = worst pain\] numeric scale) was recorded at 0, 5, 10, 15, 30, 45, and 60 minutes after dosing. Pain intensity difference (PID) was defined as the baseline pain score minus the pain score of each time point.

Time frame: 5 minutes after dosing

Population: During the double-blind period, subjects received 3 doses of placebo and 6 doses of Onsolis.~All efficacy analyses were conducted using the intent-to-treat (ITT) population.~Last observation carried forward (LOCF) is used to impute missing data or data after rescue medication usage.

ArmMeasureValue (MEAN)Dispersion
OnsolisPID0.3 Scores on a scaleStandard Error 0.04
PlaceboPID0.3 Scores on a scaleStandard Error 0.06
p-value: 0.517Wilcoxon (Mann-Whitney)
Secondary

Rescue Medication Usage

Rescue medication is medication taken if adequate pain relief is not realized within 30 minutes following application of the study drug. Percentage of episodes when rescue medication was used per subject is analyzed.

Time frame: 28 Days

Population: All efficacy analyses were conducted using the intent-to-treat (ITT) population.

ArmMeasureValue (MEAN)Dispersion
OnsolisRescue Medication Usage30.0 percentage of episodesStandard Error 3.53
PlaceboRescue Medication Usage44.6 percentage of episodesStandard Error 4.38
p-value: 0.002Wilcoxon (Mann-Whitney)
Secondary

SPID

Pain intensity (using an 11-point \[0 = no pain to 10 = worst pain\] numeric scale) was recorded at 0, 5, 10, 15, 30, 45, and 60 minutes after dosing. Pain intensity difference (PID) was defined as the baseline pain score minus the pain score of each time point. The primary endpoint was the Summary of Pain Intensity Differences at 30 minutes after dosing (SPID 30) in ITT population for Onsolis versus placebo during double-blind period of study. SPID was calculated as a weighted sum of the PID of all time points at or before time point of interest.Range of possible SPID values is -10X time point (minutes) to 10X time point (minutes). Higher value indicates a better outcome.SPID was calculated as a weighted sum of the pain intensity difference of all time points at or before the time point of interest.

Time frame: 0-60 minutes

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
OnsolisSPID138.0 Scores on a scaleStandard Error 9.41
PlaceboSPID106.0 Scores on a scaleStandard Error 10.58
p-value: <0.00195% CI: [15.85, 48.12]Mixed Models Analysis
Secondary

SPID

Pain intensity (using an 11-point \[0 = no pain to 10 = worst pain\] numeric scale) was recorded at 0, 5, 10, 15, 30, 45, and 60 minutes after dosing. Pain intensity difference (PID) was defined as the baseline pain score minus the pain score of each time point. The primary endpoint was the Summary of Pain Intensity Differences at 30 minutes after dosing (SPID 30) in ITT population for Onsolis versus placebo during double-blind period of study. SPID was calculated as a weighted sum of the PID of all time points at or before time point of interest.Range of possible SPID values is -10X time point (minutes) to 10X time point (minutes). Higher value indicates a better outcome.SPID was calculated as a weighted sum of the pain intensity difference of all time points at or before the time point of interest.

Time frame: 0-45 minutes

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
OnsolisSPID90.5 Scores on a scaleStandard Error 6.63
PlaceboSPID70.8 Scores on a scaleStandard Error 7.41
p-value: <0.00195% CI: [8.5, 30.86]Mixed Models Analysis
Secondary

SPID

Pain intensity (using an 11-point \[0 = no pain to 10 = worst pain\] numeric scale) was recorded at 0, 5, 10, 15, 30, 45, and 60 minutes after dosing. Pain intensity difference (PID) was defined as the baseline pain score minus the pain score of each time point. The primary endpoint was the Summary of Pain Intensity Differences at 30 minutes after dosing (SPID 30) in ITT population for Onsolis versus placebo during double-blind period of study. SPID was calculated as a weighted sum of the PID of all time points at or before time point of interest.Range of possible SPID values is -10X time point (minutes) to 10X time point (minutes). Higher value indicates a better outcome.SPID was calculated as a weighted sum of the pain intensity difference of all time points at or before the time point of interest.

Time frame: 0-15 minutes

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
OnsolisSPID12.8 Scores on a scaleStandard Error 1.47
PlaceboSPID10.4 Scores on a scaleStandard Error 1.61
p-value: 0.04795% CI: [0.04, 4.61]Mixed Models Analysis
Secondary

SPID

Pain intensity (using an 11-point \[0 = no pain to 10 = worst pain\] numeric scale) was recorded at 0, 5, 10, 15, 30, 45, and 60 minutes after dosing. Pain intensity difference (PID) was defined as the baseline pain score minus the pain score of each time point. The primary endpoint was the Summary of Pain Intensity Differences at 30 minutes after dosing (SPID 30) in ITT population for Onsolis versus placebo during double-blind period of study. SPID was calculated as a weighted sum of the PID of all time points at or before time point of interest.Range of possible SPID values is -10X time point (minutes) to 10X time point (minutes). Higher value indicates a better outcome.SPID was calculated as a weighted sum of the pain intensity difference of all time points at or before the time point of interest.

Time frame: 0-10 minutes

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
OnsolisSPID5.9 Scores on a scaleStandard Error 0.8
PlaceboSPID4.9 Scores on a scaleStandard Error 0.9
p-value: 0.17995% CI: [-0.44, 2.33]Mixed Models Analysis
Secondary

SPID

Pain intensity (using an 11-point \[0 = no pain to 10 = worst pain\] numeric scale) was recorded at 0, 5, 10, 15, 30, 45, and 60 minutes after dosing. Pain intensity difference (PID) was defined as the baseline pain score minus the pain score of each time point. The primary endpoint was the Summary of Pain Intensity Differences at 30 minutes after dosing (SPID 30) in ITT population for Onsolis versus placebo during double-blind period of study. SPID was calculated as a weighted sum of the PID of all time points at or before time point of interest.Range of possible SPID values is -10X time point (minutes) to 10X time point (minutes). Higher value indicates a better outcome.SPID was calculated as a weighted sum of the pain intensity difference of all time points at or before the time point of interest.

Time frame: 0-5 minutes

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
OnsolisSPID1.8 Scores on a scaleStandard Error 0.3
PlaceboSPID1.5 Scores on a scaleStandard Error 0.36
p-value: 0.4495% CI: [-0.4, 0.91]Wilcoxon (Mann-Whitney)
Secondary

Subject Overall Satisfaction With Study Drug

Subjects evaluated their overall satisfaction with study drug at the time rescue medication was consumed or at the 60-minute time point using a 5-point categorical scale (0 = poor, 1 = fair, 2 = good, 3 = very good, and 4 = excellent).

Time frame: 60 minutes or at time of rescue medication use

Population: All efficacy analyses were conducted using the intent-to-treat (ITT) population.

ArmMeasureValue (MEAN)Dispersion
OnsolisSubject Overall Satisfaction With Study Drug2.0 Scores on a scaleStandard Error 0.06
PlaceboSubject Overall Satisfaction With Study Drug1.5 Scores on a scaleStandard Error 0.1
p-value: <0.001Wilcoxon (Mann-Whitney)
Secondary

Total Pain Relief

Total Pain Relief (TOTPAR) is calculated as the weighted sum of the pain relief (PR) of all time points at or prior to the time point of interest. Pain relief (PR) is measured using a 5-point categorical scale (0=no relief to 4=complete relief)compared to baseline (pre-dose)

Time frame: 30 minutes

Population: During the double-blind period, subjects received 3 doses of placebo and 6 doses of Onsolis.~All efficacy analyses were conducted using the intent-to-treat (ITT) population.~Last observation carried forward (LOCF) is used to impute missing data or data after rescue medication usage.

ArmMeasureValue (MEAN)Dispersion
OnsolisTotal Pain Relief36.1 Scores on a scaleStandard Error 1.3
PlaceboTotal Pain Relief29.5 Scores on a scaleStandard Error 1.79
p-value: 0.002Wilcoxon (Mann-Whitney)
Secondary

Total Pain Relief

Total Pain Relief (TOTPAR) is calculated as the weighted sum of the pain relief (PR) of all time points at or prior to the time point of interest. Pain relief (PR) is measured using a 5-point categorical scale (0=no relief to 4=complete relief)compared to baseline (pre-dose)

Time frame: 45 minutes

Population: During the double-blind period, subjects received 3 doses of placebo and 6 doses of Onsolis.~All efficacy analyses were conducted using the intent-to-treat (ITT) population.~Last observation carried forward (LOCF) is used to impute missing data or data after rescue medication usage.

ArmMeasureValue (MEAN)Dispersion
OnsolisTotal Pain Relief64.2 Scores on a scaleStandard Error 2.05
PlaceboTotal Pain Relief52.3 Scores on a scaleStandard Error 2.93
p-value: 0.005Wilcoxon (Mann-Whitney)
Secondary

Total Pain Relief

Total Pain Relief (TOTPAR) is calculated as the weighted sum of the pain relief (PR) of all time points at or prior to the time point of interest. Pain relief (PR) is measured using a 5-point categorical scale (0=no relief to 4=complete relief)compared to baseline (pre-dose)

Time frame: 60 minutes

Population: During the double-blind period, subjects received 3 doses of placebo and 6 doses of Onsolis.~All efficacy analyses were conducted using the intent-to-treat (ITT) population.~Last observation carried forward (LOCF) is used to impute missing data or data after rescue medication usage.

ArmMeasureValue (MEAN)Dispersion
OnsolisTotal Pain Relief94.8 Scores on a scaleStandard Error 2.84
PlaceboTotal Pain Relief76.0 Scores on a scaleStandard Error 4.16
p-value: 0.001Wilcoxon (Mann-Whitney)
Secondary

Total Pain Relief

Total Pain Relief (TOTPAR) is calculated as the weighted sum of the pain relief (PR) of all time points at or prior to the time point of interest. Pain relief (PR) is measured using a 5-point categorical scale (0=no relief to 4=complete relief)compared to baseline (pre-dose)

Time frame: 15 minutes

Population: During the double-blind period, subjects received 3 doses of placebo and 6 doses of Onsolis.~All efficacy analyses were conducted using the intent-to-treat (ITT) population.~Last observation carried forward (LOCF) is used to impute missing data or data after rescue medication usage.

ArmMeasureValue (MEAN)Dispersion
OnsolisTotal Pain Relief11.6 Scores on a scaleStandard Error 0.62
PlaceboTotal Pain Relief9.8 Scores on a scaleStandard Error 0.82
p-value: 0.062Wilcoxon (Mann-Whitney)
Secondary

Total Pain Relief

Total Pain Relief (TOTPAR) is calculated as the weighted sum of the pain relief (PR) of all time points at or prior to the time point of interest. Pain relief (PR) is measured using a 5-point categorical scale (0=no relief to 4=complete relief)compared to baseline (pre-dose)

Time frame: 10 minutes

Population: During the double-blind period, subjects received 3 doses of placebo and 6 doses of Onsolis.~All efficacy analyses were conducted using the intent-to-treat (ITT) population.~Last observation carried forward (LOCF) is used to impute missing data or data after rescue medication usage.

ArmMeasureValue (MEAN)Dispersion
OnsolisTotal Pain Relief6.1 Scores on a scaleStandard Error 0.4
PlaceboTotal Pain Relief5.2 Scores on a scaleStandard Error 0.54
p-value: 0.278Wilcoxon (Mann-Whitney)
Secondary

Total Pain Relief

Total Pain Relief (TOTPAR) is calculated as the weighted sum of the pain relief (PR) of all time points at or prior to the time point of interest.Pain relief (PR) is measured using a 5-point categorical scale (0=no relief to 4=complete relief)compared to baseline (pre-dose)

Time frame: 5 minutes

Population: During the double-blind period, subjects received 3 doses of placebo and 6 doses of Onsolis.~All efficacy analyses were conducted using the intent-to-treat (ITT) population.~Last observation carried forward (LOCF) is used to impute missing data or data after rescue medication usage.

ArmMeasureValue (MEAN)Dispersion
OnsolisTotal Pain Relief2.2 Scores on a scaleStandard Error 0.21
PlaceboTotal Pain Relief1.8 Scores on a scaleStandard Error 0.28
p-value: 0.157Wilcoxon (Mann-Whitney)
Other Pre-specified

SPID in Neuropathic Pain Subpopulation

Pain intensity (using an 11-point \[0 = no pain to 10 = worst pain\] numeric scale) was recorded at 0, 5, 10, 15, 30, 45, and 60 minutes after dosing. Pain intensity difference (PID) was defined as the baseline pain score minus the pain score of each time point. The primary endpoint was the Summary of Pain Intensity Differences at 30 minutes after dosing (SPID 30) in ITT population for Onsolis versus placebo during double-blind period of study. SPID was calculated as a weighted sum of the PID of all time points at or before time point of interest.Range of possible SPID values is -10X time point (minutes) to 10X time point (minutes). Higher value indicates a better outcome. SPID was calculated as a weighted sum of the pain intensity difference of all time points at or before the time point of interest for the Neuropathic pain subpopulation for relevant time points (15, 30, 45, 60 minutes). Neuropathic pain subpopulation is a subset of ITT population who have neuropathic pain at baseline.

Time frame: 15 minutes

Population: During the double-blind period, subjects received 3 doses of placebo and 6 doses of Onsolis.~All efficacy analyses were conducted using the intent-to-treat (ITT) population.~Missing data were imputed on an episode-by-episode basis by carrying forward the last observed data value (last observation carried forward \[LOCF\]).

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
OnsolisSPID in Neuropathic Pain Subpopulation13.8 Scores on a scaleStandard Error 2.93
PlaceboSPID in Neuropathic Pain Subpopulation7.8 Scores on a scaleStandard Error 3.2
p-value: 0.02395% CI: [0.92, 11.01]Mixed Models Analysis
Other Pre-specified

SPID in Neuropathic Pain Subpopulation

Pain intensity (using an 11-point \[0 = no pain to 10 = worst pain\] numeric scale) was recorded at 0, 5, 10, 15, 30, 45, and 60 minutes after dosing. Pain intensity difference (PID) was defined as the baseline pain score minus the pain score of each time point. The primary endpoint was the Summary of Pain Intensity Differences at 30 minutes after dosing (SPID 30) in ITT population for Onsolis versus placebo during double-blind period of study. SPID was calculated as a weighted sum of the PID of all time points at or before time point of interest.Range of possible SPID values is -10X time point (minutes) to 10X time point (minutes). Higher value indicates a better outcome. SPID was calculated as a weighted sum of the pain intensity difference of all time points at or before the time point of interest for the Neuropathic pain subpopulation for relevant time points (15, 30, 45, 60 minutes). Neuropathic pain subpopulation is a subset of ITT population who have neuropathic pain at baseline.

Time frame: 30 minutes

Population: During the double-blind period, subjects received 3 doses of placebo and 6 doses of Onsolis.~All efficacy analyses were conducted using the intent-to-treat (ITT) population.~Missing data were imputed on an episode-by-episode basis by carrying forward the last observed data value (last observation carried forward \[LOCF\]).

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
OnsolisSPID in Neuropathic Pain Subpopulation51.6 Scores on a scaleStandard Error 8.05
PlaceboSPID in Neuropathic Pain Subpopulation31.8 Scores on a scaleStandard Error 8.86
p-value: 0.00995% CI: [5.63, 34.04]Mixed Models Analysis
Other Pre-specified

SPID in Neuropathic Pain Subpopulation

Pain intensity (using an 11-point \[0 = no pain to 10 = worst pain\] numeric scale) was recorded at 0, 5, 10, 15, 30, 45, and 60 minutes after dosing. Pain intensity difference (PID) was defined as the baseline pain score minus the pain score of each time point. The primary endpoint was the Summary of Pain Intensity Differences at 30 minutes after dosing (SPID 30) in ITT population for Onsolis versus placebo during double-blind period of study. SPID was calculated as a weighted sum of the PID of all time points at or before time point of interest.Range of possible SPID values is -10X time point (minutes) to 10X time point (minutes). Higher value indicates a better outcome. SPID was calculated as a weighted sum of the pain intensity difference of all time points at or before the time point of interest for the Neuropathic pain subpopulation for relevant time points (15, 30, 45, 60 minutes). Neuropathic pain subpopulation is a subset of ITT population who have neuropathic pain at baseline.

Time frame: 45 minutes

Population: During the double-blind period, subjects received 3 doses of placebo and 6 doses of Onsolis.~All efficacy analyses were conducted using the intent-to-treat (ITT) population.~Missing data were imputed on an episode-by-episode basis by carrying forward the last observed data value (last observation carried forward \[LOCF\]).

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
OnsolisSPID in Neuropathic Pain Subpopulation93.0 Scores on a scaleStandard Error 14.09
PlaceboSPID in Neuropathic Pain Subpopulation59.7 Scores on a scaleStandard Error 15.63
p-value: 0.01295% CI: [8.32, 58.2]Mixed Models Analysis
Other Pre-specified

SPID in Neuropathic Pain Subpopulation

Pain intensity (using an 11-point \[0 = no pain to 10 = worst pain\] numeric scale) was recorded at 0, 5, 10, 15, 30, 45, and 60 minutes after dosing. Pain intensity difference (PID) was defined as the baseline pain score minus the pain score of each time point. The primary endpoint was the Summary of Pain Intensity Differences at 30 minutes after dosing (SPID 30) in ITT population for Onsolis versus placebo during double-blind period of study. SPID was calculated as a weighted sum of the PID of all time points at or before time point of interest.Range of possible SPID values is -10X time point (minutes) to 10X time point (minutes). Higher value indicates a better outcome. SPID was calculated as a weighted sum of the pain intensity difference of all time points at or before the time point of interest for the Neuropathic pain subpopulation for relevant time points (15, 30, 45, 60 minutes). Neuropathic pain subpopulation is a subset of ITT population who have neuropathic pain at baseline.

Time frame: 60 minutes

Population: During the double-blind period, subjects received 3 doses of placebo and 6 doses of Onsolis.~All efficacy analyses were conducted using the intent-to-treat (ITT) population.~Missing data were imputed on an episode-by-episode basis by carrying forward the last observed data value (last observation carried forward \[LOCF\]).

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
OnsolisSPID in Neuropathic Pain Subpopulation137.8 Scores on a scaleStandard Error 20.19
PlaceboSPID in Neuropathic Pain Subpopulation90.9 Scores on a scaleStandard Error 22.53
p-value: 0.01595% CI: [10.69, 83.08]Mixed Models Analysis

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026