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To Assess the Cutaneous Irritation and Sensitization Potential of a Cosmetic Facial Product Using a Human Repeat Insult Patch Test (HRIPT) in Healthy Participants

A Human Repeat Insult Patch Test (HRIPT) in Healthy Subjects to Assess the Cutaneous Irritation and Sensitization Potential of a Cosmetic Facial Product

Status
Completed
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03175562
Enrollment
272
Registered
2017-06-05
Start date
2017-03-27
Completion date
2017-05-19
Last updated
2019-02-15

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

Conditions

Skin Care

Brief summary

The objective of this clinical study is to assess the irritation and sensitisation potential of a cosmetic test product after repeated semi-occlusive patch applications to healthy human participants by following a conventional HRIPT methodology under supervision of a dermatologist.

Detailed description

The first phase of the study is an Induction Phase; a known amount of each product (test and control) is applied, under a semi-occlusive patch. Patches will remain on the skin for 48 (±2) (weekdays) or 72 (±2) (including inclusive weekends) hours during this phase. Induction phase lasts for 3 weeks. After the Induction Phase participants will enter a Rest Phase of 2 weeks duration, during which no patches are applied. After the Rest Phase, participants will return to the clinical site for the Challenge Phase. In this phase a challenge patch containing the test and control products is applied to virgin skin for 48 (±2) hours then assessed 30 minutes (maximum 1 hour) following removal, 24 (± 2) and 48 (±2) hours later.

Interventions

Participant will have each product applied topically via semi occlusive patch, on site by the technician. Each patch will remain in place for 48 (± 2) hours on weekdays and 72 (± 2) hours on weekends.

Participant will have each product applied topically via semi occlusive patch, on site by the technician. Each patch will remain in place for 48 (± 2) hours on weekdays and 72 (± 2) hours on weekends.

Sponsors

GlaxoSmithKline
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
BASIC_SCIENCE
Masking
SINGLE (Outcomes Assessor)

Eligibility

Sex/Gender
ALL
Age
18 Years to 65 Years
Healthy volunteers
Yes

Inclusion criteria

* Demonstrates understanding of the study procedures, restrictions and willingness to participate as evidenced by voluntary written informed consent and has received a signed and dated copy of the informed consent form * Good general and mental health with, in the opinion of the investigator or medically qualified designee no clinically significant and relevant abnormalities in medical history or upon physical examination * Healthy, intact skin at the proposed application site; dorsum (scapular region) * Clinical assessment for eligibility (at Visit 1 and Visit 2 - if not combined) by a dermatologist to ensure participant is free of clinically relevant dermatological conditions * Fitzpatrick phototype I to IV * Agreement to comply with the procedures and requirements of the study and to attend the scheduled assessment visits

Exclusion criteria

* Women who are known to be pregnant or who are intending to become pregnant over the duration of the study * Women who are breast-feeding * Any history of significant dermatological diseases or conditions or medical conditions known to alter skin appearance or physiologic response (e.g. diabetes,) which could, in the opinion of the Investigator, preclude topical application of the investigational products and/or interfere with the evaluation of the test site reaction * Presence of open sores, pimples, or cysts at the application site * Active dermatosis (local or disseminated) that might interfere with the results of the study * Considered immune compromised * History of diseases aggravated or triggered by ultraviolet radiation * Participants with dermatographism * Currently using any medication which in the opinion of the investigator, may affect the evaluation of the study product, or place the participant at undue risk * Use of the following topical or systemic medications: immunosuppressants, antihistamines, non-hormonal anti-inflammatory drugs, and corticosteroids up to 2 weeks before screening visit * Oral or topical treatment with vitamin A acid and/or its derivatives up to 1 month before the screening visit * Intention of being vaccinated during the study period or has been vaccinated within 3 weeks of the screening visit * Currently receiving allergy injections, or received an allergy injection within 7 days prior to Visit 1, or expects to begin injections during study participation * Previous history of atopy, allergic reactions, irritation or intense discomfort feelings to topical-use products, cosmetics or medication * Study participants with a history of allergy to the study material/product, hypoallergenic tape, or to the cotton patches * History of sensitisation in a previous patch study * Participation in another clinical study (including cosmetic studies) or receipt of an investigational drug within 30 days of the screening visit * Previous participation in this study * Recent history (within the last 5 years) of alcohol or other substance abuse * Intense sunlight exposure or sun tanning sessions up to 30 days before the Screening evaluation * Intention of bathing (in the sea or a pool), sauna, water sports, or activities that lead to intense sweating * Any participant who, in the judgment of the Investigator, should not participate in the study * Any skin marks on the test site that might interfere with the evaluation of possible skin reactions (e.g. pigmentation disorders, vascular malformations, scars, tattoos, excessive hair, numerous freckles) * Prisoner or involuntary incarcerated participant * Participant from an indigenous tribe * An employee of the sponsor or the study site or members of their immediate family

Design outcomes

Primary

MeasureTime frameDescription
Combined Skin Irritation (Dermal Response) and Superficial Irritation (Other Effects) Scores at Induction Phase at Day 3At Day 3A trained assessor assessed all patch sites. The following scores were used to express the response observed at the time of examination: 0=No evidence of irritation, 1=Minimal erythema; barely perceptible, 2=Definite erythema, readily visible; or minimal edema; or minimal papular response, 3=Erythema and papules, 4=Definite edema, 5=Erythema, edema, and papules, 6=Vesicular eruption, 7=Strong reaction spreading beyond test site. Other features indicative irritation (Superficial irritation) scores were: Grade A/Score 0=Slight glazed appearance, Grade B/Score 1=Marked glazing, Grade C/Score 2=Glazing with peeling and cracking, Grade F/Score 3=Glazing with fissures, Grade G/Score 3=Film of dried serous exudate covering all or portion of the patch, Grade H/Score 3=Small petechial erosions and/or scabs. Superficial irritation scores were only provided if there was a dermal response score \>0. Full range was 0-10. Lower score indicates better tolerability.
Combined Skin Irritation (Dermal Response) and Superficial Irritation (Other Effects) Scores at Induction Phase at Day 5At Day 5A trained assessor assessed all patch sites. The following scores were used to express the response observed at the time of examination: 0=No evidence of irritation, 1=Minimal erythema; barely perceptible, 2=Definite erythema, readily visible; or minimal edema; or minimal papular response, 3=Erythema and papules, 4=Definite edema, 5=Erythema, edema, and papules, 6=Vesicular eruption, 7=Strong reaction spreading beyond test site. Other features indicative irritation (Superficial irritation) scores were: Grade A/Score 0=Slight glazed appearance, Grade B/Score 1=Marked glazing, Grade C/Score 2=Glazing with peeling and cracking, Grade F/Score 3=Glazing with fissures, Grade G/Score 3=Film of dried serous exudate covering all or portion of the patch, Grade H/Score 3=Small petechial erosions and/or scabs. Superficial irritation scores were only provided if there was a dermal response score \>0. Full range was 0-10. Lower score indicates better tolerability.
Combined Skin Irritation (Dermal Response) and Superficial Irritation (Other Effects) Scores at Induction Phase at Day 8At Day 8A trained assessor assessed all patch sites. The following scores were used to express the response observed at the time of examination: 0=No evidence of irritation, 1=Minimal erythema; barely perceptible, 2=Definite erythema, readily visible; or minimal edema; or minimal papular response, 3=Erythema and papules, 4=Definite edema, 5=Erythema, edema, and papules, 6=Vesicular eruption, 7=Strong reaction spreading beyond test site. Other features indicative irritation (Superficial irritation) scores were: Grade A/Score 0=Slight glazed appearance, Grade B/Score 1=Marked glazing, Grade C/Score 2=Glazing with peeling and cracking, Grade F/Score 3=Glazing with fissures, Grade G/Score 3=Film of dried serous exudate covering all or portion of the patch, Grade H/Score 3=Small petechial erosions and/or scabs. Superficial irritation scores were only provided if there was a dermal response score \>0. Full range was 0-10. Lower score indicates better tolerability.
Combined Skin Irritation (Dermal Response) and Superficial Irritation (Other Effects) Scores at Induction Phase at Day 10At Day 10A trained assessor assessed all patch sites. The following scores were used to express the response observed at the time of examination: 0=No evidence of irritation, 1=Minimal erythema; barely perceptible, 2=Definite erythema, readily visible; or minimal edema; or minimal papular response, 3=Erythema and papules, 4=Definite edema, 5=Erythema, edema, and papules, 6=Vesicular eruption, 7=Strong reaction spreading beyond test site. Other features indicative irritation (Superficial irritation) scores were: Grade A/Score 0=Slight glazed appearance, Grade B/Score 1=Marked glazing, Grade C/Score 2=Glazing with peeling and cracking, Grade F/Score 3=Glazing with fissures, Grade G/Score 3=Film of dried serous exudate covering all or portion of the patch, Grade H/Score 3=Small petechial erosions and/or scabs. Superficial irritation scores were only provided if there was a dermal response score \>0. Full range was 0-10. Lower score indicates better tolerability.
Combined Skin Irritation (Dermal Response) and Superficial Irritation (Other Effects) Scores at Induction Phase at Day 12At Day 12A trained assessor assessed all patch sites. The following scores were used to express the response observed at the time of examination: 0=No evidence of irritation, 1=Minimal erythema; barely perceptible, 2=Definite erythema, readily visible; or minimal edema; or minimal papular response, 3=Erythema and papules, 4=Definite edema, 5=Erythema, edema, and papules, 6=Vesicular eruption, 7=Strong reaction spreading beyond test site. Other features indicative irritation (Superficial irritation) scores were: Grade A/Score 0=Slight glazed appearance, Grade B/Score 1=Marked glazing, Grade C/Score 2=Glazing with peeling and cracking, Grade F/Score 3=Glazing with fissures, Grade G/Score 3=Film of dried serous exudate covering all or portion of the patch, Grade H/Score 3=Small petechial erosions and/or scabs. Superficial irritation scores were only provided if there was a dermal response score \>0. Full range was 0-10. Lower score indicates better tolerability.
Combined Skin Irritation (Dermal Response) and Superficial Irritation (Other Effects) Scores at Induction Phase at Day 15At Day 15A trained assessor assessed all patch sites. The following scores were used to express the response observed at the time of examination: 0=No evidence of irritation, 1=Minimal erythema; barely perceptible, 2=Definite erythema, readily visible; or minimal edema; or minimal papular response, 3=Erythema and papules, 4=Definite edema, 5=Erythema, edema, and papules, 6=Vesicular eruption, 7=Strong reaction spreading beyond test site. Other features indicative irritation (Superficial irritation) scores were: Grade A/Score 0=Slight glazed appearance, Grade B/Score 1=Marked glazing, Grade C/Score 2=Glazing with peeling and cracking, Grade F/Score 3=Glazing with fissures, Grade G/Score 3=Film of dried serous exudate covering all or portion of the patch, Grade H/Score 3=Small petechial erosions and/or scabs. Superficial irritation scores were only provided if there was a dermal response score \>0. Full range was 0-10. Lower score indicates better tolerability.
Combined Skin Irritation (Dermal Response) and Superficial Irritation (Other Effects) Scores at Induction Phase at Day 17At Day 17A trained assessor assessed all patch sites. The following scores were used to express the response observed at the time of examination: 0=No evidence of irritation, 1=Minimal erythema; barely perceptible, 2=Definite erythema, readily visible; or minimal edema; or minimal papular response, 3=Erythema and papules, 4=Definite edema, 5=Erythema, edema, and papules, 6=Vesicular eruption, 7=Strong reaction spreading beyond test site. Other features indicative irritation (Superficial irritation) scores were: Grade A/Score 0=Slight glazed appearance, Grade B/Score 1=Marked glazing, Grade C/Score 2=Glazing with peeling and cracking, Grade F/Score 3=Glazing with fissures, Grade G/Score 3=Film of dried serous exudate covering all or portion of the patch, Grade H/Score 3=Small petechial erosions and/or scabs. Superficial irritation scores were only provided if there was a dermal response score \>0. Full range was 0-10. Lower score indicates better tolerability.
Combined Skin Irritation (Dermal Response) and Superficial Irritation (Other Effects) Scores at Induction Phase at Day 19At Day 19A trained assessor assessed all patch sites. The following scores were used to express the response observed at the time of examination: 0=No evidence of irritation, 1=Minimal erythema; barely perceptible, 2=Definite erythema, readily visible; or minimal edema; or minimal papular response, 3=Erythema and papules, 4=Definite edema, 5=Erythema, edema, and papules, 6=Vesicular eruption, 7=Strong reaction spreading beyond test site. Other features indicative irritation (Superficial irritation) scores were: Grade A/Score 0=Slight glazed appearance, Grade B/Score 1=Marked glazing, Grade C/Score 2=Glazing with peeling and cracking, Grade F/Score 3=Glazing with fissures, Grade G/Score 3=Film of dried serous exudate covering all or portion of the patch, Grade H/Score 3=Small petechial erosions and/or scabs. Superficial irritation scores were only provided if there was a dermal response score \>0. Full range was 0-10. Lower score indicates better tolerability.
Combined Skin Irritation (Dermal Response) and Superficial Irritation (Other Effects) Scores at Challenge Phase at Week 6 After 30 Minutes (Maximum 1 Hour) Post Patch RemovalAt Week 6 after 30 minutes (maximum 1 hour) post patch removalA trained assessor assessed all patch sites. The following scores were used to express the response observed at the time of examination: 0=No evidence of irritation, 1=Minimal erythema; barely perceptible, 2=Definite erythema, readily visible; or minimal edema; or minimal papular response, 3=Erythema and papules, 4=Definite edema, 5=Erythema, edema, and papules, 6=Vesicular eruption, 7=Strong reaction spreading beyond test site. Other features indicative irritation (Superficial irritation) scores were: Grade A/Score 0=Slight glazed appearance, Grade B/Score 1=Marked glazing, Grade C/Score 2=Glazing with peeling and cracking, Grade F/Score 3=Glazing with fissures, Grade G/Score 3=Film of dried serous exudate covering all or portion of the patch, Grade H/Score 3=Small petechial erosions and/or scabs. Superficial irritation scores were only provided if there was a dermal response score \>0. Full range was 0-10. Lower score indicates better tolerability.
Combined Skin Irritation (Dermal Response) and Superficial Irritation (Other Effects) Scores at Challenge Phase at Week 6 After 24 (±2) Hours Post Patch RemovalAt Week 6 after 24 (±2) hours post patch removalA trained assessor assessed all patch sites. The following scores were used to express the response observed at the time of examination: 0=No evidence of irritation, 1=Minimal erythema; barely perceptible, 2=Definite erythema, readily visible; or minimal edema; or minimal papular response, 3=Erythema and papules, 4=Definite edema, 5=Erythema, edema, and papules, 6=Vesicular eruption, 7=Strong reaction spreading beyond test site. Other features indicative irritation (Superficial irritation) scores were: Grade A/Score 0=Slight glazed appearance, Grade B/Score 1=Marked glazing, Grade C/Score 2=Glazing with peeling and cracking, Grade F/Score 3=Glazing with fissures, Grade G/Score 3=Film of dried serous exudate covering all or portion of the patch, Grade H/Score 3=Small petechial erosions and/or scabs. Superficial irritation scores were only provided if there was a dermal response score \>0. Full range was 0-10. Lower score indicates better tolerability.
Combined Skin Irritation (Dermal Response) and Superficial Irritation (Other Effects) Scores at Challenge Phase at 6 Week 48 (±2) Hours, Post Patch RemovalAt Week 6 after 48 (±2) hours post patch removalA trained assessor assessed all patch sites. The following scores were used to express the response observed at the time of examination: 0=No evidence of irritation, 1=Minimal erythema; barely perceptible, 2=Definite erythema, readily visible; or minimal edema; or minimal papular response, 3=Erythema and papules, 4=Definite edema, 5=Erythema, edema, and papules, 6=Vesicular eruption, 7=Strong reaction spreading beyond test site. Other features indicative irritation (Superficial irritation) scores were: Grade A/Score 0=Slight glazed appearance, Grade B/Score 1=Marked glazing, Grade C/Score 2=Glazing with peeling and cracking, Grade F/Score 3=Glazing with fissures, Grade G/Score 3=Film of dried serous exudate covering all or portion of the patch, Grade H/Score 3=Small petechial erosions and/or scabs. Superficial irritation scores were only provided if there was a dermal response score \>0. Full range was 0-10. Lower score indicates better tolerability.

Countries

Brazil

Participant flow

Recruitment details

All participants were enrolled at one center in Brazil.

Pre-assignment details

A total of 294 participants were screened,out of which 240 participants were randomized and 54 participants were not randomized. Out of 54 participants, 22 participants did not meet study criteria, 5 participants were lost to follow-up, 26 participants withdrew their consent, 1 participant was not randomized for other reasons (not specified).

Participants by arm

ArmCount
Overall Participants
All the participants who received any application of study products were included for baseline evaluation
240
Total240

Withdrawals & dropouts

PeriodReasonFG000
Overall StudyAdverse Event1
Overall StudyLost to Follow-up3
Overall StudyOther (Not Specified)5
Overall StudyWithdrawal by Subject7

Baseline characteristics

CharacteristicOverall Participants
Age, Continuous41.2 Years
STANDARD_DEVIATION 12.44
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
Race (NIH/OMB)
Asian
1 Participants
Race (NIH/OMB)
Black or African American
5 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
0 Participants
Race (NIH/OMB)
White
234 Participants
Sex: Female, Male
Female
196 Participants
Sex: Female, Male
Male
44 Participants

Adverse events

Event typeEG000
affected / at risk
deaths
Total, all-cause mortality
0 / 240
other
Total, other adverse events
6 / 240
serious
Total, serious adverse events
0 / 240

Outcome results

Primary

Combined Skin Irritation (Dermal Response) and Superficial Irritation (Other Effects) Scores at Challenge Phase at 6 Week 48 (±2) Hours, Post Patch Removal

A trained assessor assessed all patch sites. The following scores were used to express the response observed at the time of examination: 0=No evidence of irritation, 1=Minimal erythema; barely perceptible, 2=Definite erythema, readily visible; or minimal edema; or minimal papular response, 3=Erythema and papules, 4=Definite edema, 5=Erythema, edema, and papules, 6=Vesicular eruption, 7=Strong reaction spreading beyond test site. Other features indicative irritation (Superficial irritation) scores were: Grade A/Score 0=Slight glazed appearance, Grade B/Score 1=Marked glazing, Grade C/Score 2=Glazing with peeling and cracking, Grade F/Score 3=Glazing with fissures, Grade G/Score 3=Film of dried serous exudate covering all or portion of the patch, Grade H/Score 3=Small petechial erosions and/or scabs. Superficial irritation scores were only provided if there was a dermal response score \>0. Full range was 0-10. Lower score indicates better tolerability.

Time frame: At Week 6 after 48 (±2) hours post patch removal

Population: The ITT (N=238) population included all participants who were randomized into the study and have skin irritation scores from at least one of the test sites available.

ArmMeasureValue (MEAN)Dispersion
Test ProductCombined Skin Irritation (Dermal Response) and Superficial Irritation (Other Effects) Scores at Challenge Phase at 6 Week 48 (±2) Hours, Post Patch Removal0 Score on scaleStandard Deviation 0
Reference ProductCombined Skin Irritation (Dermal Response) and Superficial Irritation (Other Effects) Scores at Challenge Phase at 6 Week 48 (±2) Hours, Post Patch Removal0 Score on scaleStandard Deviation 0
Primary

Combined Skin Irritation (Dermal Response) and Superficial Irritation (Other Effects) Scores at Challenge Phase at Week 6 After 24 (±2) Hours Post Patch Removal

A trained assessor assessed all patch sites. The following scores were used to express the response observed at the time of examination: 0=No evidence of irritation, 1=Minimal erythema; barely perceptible, 2=Definite erythema, readily visible; or minimal edema; or minimal papular response, 3=Erythema and papules, 4=Definite edema, 5=Erythema, edema, and papules, 6=Vesicular eruption, 7=Strong reaction spreading beyond test site. Other features indicative irritation (Superficial irritation) scores were: Grade A/Score 0=Slight glazed appearance, Grade B/Score 1=Marked glazing, Grade C/Score 2=Glazing with peeling and cracking, Grade F/Score 3=Glazing with fissures, Grade G/Score 3=Film of dried serous exudate covering all or portion of the patch, Grade H/Score 3=Small petechial erosions and/or scabs. Superficial irritation scores were only provided if there was a dermal response score \>0. Full range was 0-10. Lower score indicates better tolerability.

Time frame: At Week 6 after 24 (±2) hours post patch removal

Population: The ITT (N=238) population included all participants who were randomized into the study and have skin irritation scores from at least one of the test sites available.

ArmMeasureValue (MEAN)Dispersion
Test ProductCombined Skin Irritation (Dermal Response) and Superficial Irritation (Other Effects) Scores at Challenge Phase at Week 6 After 24 (±2) Hours Post Patch Removal0 Score on scaleStandard Deviation 0
Reference ProductCombined Skin Irritation (Dermal Response) and Superficial Irritation (Other Effects) Scores at Challenge Phase at Week 6 After 24 (±2) Hours Post Patch Removal0 Score on scaleStandard Deviation 0
Primary

Combined Skin Irritation (Dermal Response) and Superficial Irritation (Other Effects) Scores at Challenge Phase at Week 6 After 30 Minutes (Maximum 1 Hour) Post Patch Removal

A trained assessor assessed all patch sites. The following scores were used to express the response observed at the time of examination: 0=No evidence of irritation, 1=Minimal erythema; barely perceptible, 2=Definite erythema, readily visible; or minimal edema; or minimal papular response, 3=Erythema and papules, 4=Definite edema, 5=Erythema, edema, and papules, 6=Vesicular eruption, 7=Strong reaction spreading beyond test site. Other features indicative irritation (Superficial irritation) scores were: Grade A/Score 0=Slight glazed appearance, Grade B/Score 1=Marked glazing, Grade C/Score 2=Glazing with peeling and cracking, Grade F/Score 3=Glazing with fissures, Grade G/Score 3=Film of dried serous exudate covering all or portion of the patch, Grade H/Score 3=Small petechial erosions and/or scabs. Superficial irritation scores were only provided if there was a dermal response score \>0. Full range was 0-10. Lower score indicates better tolerability.

Time frame: At Week 6 after 30 minutes (maximum 1 hour) post patch removal

Population: The ITT (N=238) population included all participants who were randomized into the study and have skin irritation scores from at least one of the test sites available.

ArmMeasureValue (MEAN)Dispersion
Test ProductCombined Skin Irritation (Dermal Response) and Superficial Irritation (Other Effects) Scores at Challenge Phase at Week 6 After 30 Minutes (Maximum 1 Hour) Post Patch Removal0 Score on scaleStandard Deviation 0
Reference ProductCombined Skin Irritation (Dermal Response) and Superficial Irritation (Other Effects) Scores at Challenge Phase at Week 6 After 30 Minutes (Maximum 1 Hour) Post Patch Removal0 Score on scaleStandard Deviation 0
Primary

Combined Skin Irritation (Dermal Response) and Superficial Irritation (Other Effects) Scores at Induction Phase at Day 10

A trained assessor assessed all patch sites. The following scores were used to express the response observed at the time of examination: 0=No evidence of irritation, 1=Minimal erythema; barely perceptible, 2=Definite erythema, readily visible; or minimal edema; or minimal papular response, 3=Erythema and papules, 4=Definite edema, 5=Erythema, edema, and papules, 6=Vesicular eruption, 7=Strong reaction spreading beyond test site. Other features indicative irritation (Superficial irritation) scores were: Grade A/Score 0=Slight glazed appearance, Grade B/Score 1=Marked glazing, Grade C/Score 2=Glazing with peeling and cracking, Grade F/Score 3=Glazing with fissures, Grade G/Score 3=Film of dried serous exudate covering all or portion of the patch, Grade H/Score 3=Small petechial erosions and/or scabs. Superficial irritation scores were only provided if there was a dermal response score \>0. Full range was 0-10. Lower score indicates better tolerability.

Time frame: At Day 10

Population: The ITT (N=238) population included all participants who were randomized into the study and have skin irritation scores from at least one of the test sites available.

ArmMeasureValue (MEAN)Dispersion
Test ProductCombined Skin Irritation (Dermal Response) and Superficial Irritation (Other Effects) Scores at Induction Phase at Day 100 Score on scaleStandard Deviation 0
Reference ProductCombined Skin Irritation (Dermal Response) and Superficial Irritation (Other Effects) Scores at Induction Phase at Day 100 Score on scaleStandard Deviation 0
Primary

Combined Skin Irritation (Dermal Response) and Superficial Irritation (Other Effects) Scores at Induction Phase at Day 12

A trained assessor assessed all patch sites. The following scores were used to express the response observed at the time of examination: 0=No evidence of irritation, 1=Minimal erythema; barely perceptible, 2=Definite erythema, readily visible; or minimal edema; or minimal papular response, 3=Erythema and papules, 4=Definite edema, 5=Erythema, edema, and papules, 6=Vesicular eruption, 7=Strong reaction spreading beyond test site. Other features indicative irritation (Superficial irritation) scores were: Grade A/Score 0=Slight glazed appearance, Grade B/Score 1=Marked glazing, Grade C/Score 2=Glazing with peeling and cracking, Grade F/Score 3=Glazing with fissures, Grade G/Score 3=Film of dried serous exudate covering all or portion of the patch, Grade H/Score 3=Small petechial erosions and/or scabs. Superficial irritation scores were only provided if there was a dermal response score \>0. Full range was 0-10. Lower score indicates better tolerability.

Time frame: At Day 12

Population: The ITT (N=238) population included all participants who were randomized into the study and have skin irritation scores from at least one of the test sites available.

ArmMeasureValue (MEAN)Dispersion
Test ProductCombined Skin Irritation (Dermal Response) and Superficial Irritation (Other Effects) Scores at Induction Phase at Day 120 Score on scaleStandard Error 0
Reference ProductCombined Skin Irritation (Dermal Response) and Superficial Irritation (Other Effects) Scores at Induction Phase at Day 120 Score on scaleStandard Error 0
Primary

Combined Skin Irritation (Dermal Response) and Superficial Irritation (Other Effects) Scores at Induction Phase at Day 15

A trained assessor assessed all patch sites. The following scores were used to express the response observed at the time of examination: 0=No evidence of irritation, 1=Minimal erythema; barely perceptible, 2=Definite erythema, readily visible; or minimal edema; or minimal papular response, 3=Erythema and papules, 4=Definite edema, 5=Erythema, edema, and papules, 6=Vesicular eruption, 7=Strong reaction spreading beyond test site. Other features indicative irritation (Superficial irritation) scores were: Grade A/Score 0=Slight glazed appearance, Grade B/Score 1=Marked glazing, Grade C/Score 2=Glazing with peeling and cracking, Grade F/Score 3=Glazing with fissures, Grade G/Score 3=Film of dried serous exudate covering all or portion of the patch, Grade H/Score 3=Small petechial erosions and/or scabs. Superficial irritation scores were only provided if there was a dermal response score \>0. Full range was 0-10. Lower score indicates better tolerability.

Time frame: At Day 15

Population: The ITT (N=238) population included all participants who were randomized into the study and have skin irritation scores from at least one of the test sites available.

ArmMeasureValue (MEAN)Dispersion
Test ProductCombined Skin Irritation (Dermal Response) and Superficial Irritation (Other Effects) Scores at Induction Phase at Day 150 Score on scaleStandard Deviation 0
Reference ProductCombined Skin Irritation (Dermal Response) and Superficial Irritation (Other Effects) Scores at Induction Phase at Day 150 Score on scaleStandard Deviation 0
Primary

Combined Skin Irritation (Dermal Response) and Superficial Irritation (Other Effects) Scores at Induction Phase at Day 17

A trained assessor assessed all patch sites. The following scores were used to express the response observed at the time of examination: 0=No evidence of irritation, 1=Minimal erythema; barely perceptible, 2=Definite erythema, readily visible; or minimal edema; or minimal papular response, 3=Erythema and papules, 4=Definite edema, 5=Erythema, edema, and papules, 6=Vesicular eruption, 7=Strong reaction spreading beyond test site. Other features indicative irritation (Superficial irritation) scores were: Grade A/Score 0=Slight glazed appearance, Grade B/Score 1=Marked glazing, Grade C/Score 2=Glazing with peeling and cracking, Grade F/Score 3=Glazing with fissures, Grade G/Score 3=Film of dried serous exudate covering all or portion of the patch, Grade H/Score 3=Small petechial erosions and/or scabs. Superficial irritation scores were only provided if there was a dermal response score \>0. Full range was 0-10. Lower score indicates better tolerability.

Time frame: At Day 17

Population: The ITT (N=238) population included all participants who were randomized into the study and have skin irritation scores from at least one of the test sites available.

ArmMeasureValue (MEAN)Dispersion
Test ProductCombined Skin Irritation (Dermal Response) and Superficial Irritation (Other Effects) Scores at Induction Phase at Day 170 Score on scaleStandard Deviation 0
Reference ProductCombined Skin Irritation (Dermal Response) and Superficial Irritation (Other Effects) Scores at Induction Phase at Day 170 Score on scaleStandard Deviation 0
Primary

Combined Skin Irritation (Dermal Response) and Superficial Irritation (Other Effects) Scores at Induction Phase at Day 19

A trained assessor assessed all patch sites. The following scores were used to express the response observed at the time of examination: 0=No evidence of irritation, 1=Minimal erythema; barely perceptible, 2=Definite erythema, readily visible; or minimal edema; or minimal papular response, 3=Erythema and papules, 4=Definite edema, 5=Erythema, edema, and papules, 6=Vesicular eruption, 7=Strong reaction spreading beyond test site. Other features indicative irritation (Superficial irritation) scores were: Grade A/Score 0=Slight glazed appearance, Grade B/Score 1=Marked glazing, Grade C/Score 2=Glazing with peeling and cracking, Grade F/Score 3=Glazing with fissures, Grade G/Score 3=Film of dried serous exudate covering all or portion of the patch, Grade H/Score 3=Small petechial erosions and/or scabs. Superficial irritation scores were only provided if there was a dermal response score \>0. Full range was 0-10. Lower score indicates better tolerability.

Time frame: At Day 19

Population: The ITT (N=238) population included all participants who were randomized into the study and have skin irritation scores from at least one of the test sites available.

ArmMeasureValue (MEAN)Dispersion
Test ProductCombined Skin Irritation (Dermal Response) and Superficial Irritation (Other Effects) Scores at Induction Phase at Day 190 Score on scaleStandard Deviation 0
Reference ProductCombined Skin Irritation (Dermal Response) and Superficial Irritation (Other Effects) Scores at Induction Phase at Day 190 Score on scaleStandard Deviation 0
Primary

Combined Skin Irritation (Dermal Response) and Superficial Irritation (Other Effects) Scores at Induction Phase at Day 3

A trained assessor assessed all patch sites. The following scores were used to express the response observed at the time of examination: 0=No evidence of irritation, 1=Minimal erythema; barely perceptible, 2=Definite erythema, readily visible; or minimal edema; or minimal papular response, 3=Erythema and papules, 4=Definite edema, 5=Erythema, edema, and papules, 6=Vesicular eruption, 7=Strong reaction spreading beyond test site. Other features indicative irritation (Superficial irritation) scores were: Grade A/Score 0=Slight glazed appearance, Grade B/Score 1=Marked glazing, Grade C/Score 2=Glazing with peeling and cracking, Grade F/Score 3=Glazing with fissures, Grade G/Score 3=Film of dried serous exudate covering all or portion of the patch, Grade H/Score 3=Small petechial erosions and/or scabs. Superficial irritation scores were only provided if there was a dermal response score \>0. Full range was 0-10. Lower score indicates better tolerability.

Time frame: At Day 3

Population: The Intent to treat (ITT, N=238) population included all participants who were randomized into the study and have skin irritation scores from at least one of the test sites available.

ArmMeasureValue (MEAN)Dispersion
Test ProductCombined Skin Irritation (Dermal Response) and Superficial Irritation (Other Effects) Scores at Induction Phase at Day 30 Score on scaleStandard Deviation 0
Reference ProductCombined Skin Irritation (Dermal Response) and Superficial Irritation (Other Effects) Scores at Induction Phase at Day 30 Score on scaleStandard Deviation 0
Primary

Combined Skin Irritation (Dermal Response) and Superficial Irritation (Other Effects) Scores at Induction Phase at Day 5

A trained assessor assessed all patch sites. The following scores were used to express the response observed at the time of examination: 0=No evidence of irritation, 1=Minimal erythema; barely perceptible, 2=Definite erythema, readily visible; or minimal edema; or minimal papular response, 3=Erythema and papules, 4=Definite edema, 5=Erythema, edema, and papules, 6=Vesicular eruption, 7=Strong reaction spreading beyond test site. Other features indicative irritation (Superficial irritation) scores were: Grade A/Score 0=Slight glazed appearance, Grade B/Score 1=Marked glazing, Grade C/Score 2=Glazing with peeling and cracking, Grade F/Score 3=Glazing with fissures, Grade G/Score 3=Film of dried serous exudate covering all or portion of the patch, Grade H/Score 3=Small petechial erosions and/or scabs. Superficial irritation scores were only provided if there was a dermal response score \>0. Full range was 0-10. Lower score indicates better tolerability.

Time frame: At Day 5

Population: The ITT (N=238) population included all participants who were randomized into the study and have skin irritation scores from at least one of the test sites available.

ArmMeasureValue (MEAN)Dispersion
Test ProductCombined Skin Irritation (Dermal Response) and Superficial Irritation (Other Effects) Scores at Induction Phase at Day 50 Score on scaleStandard Deviation 0
Reference ProductCombined Skin Irritation (Dermal Response) and Superficial Irritation (Other Effects) Scores at Induction Phase at Day 50 Score on scaleStandard Deviation 0
Primary

Combined Skin Irritation (Dermal Response) and Superficial Irritation (Other Effects) Scores at Induction Phase at Day 8

A trained assessor assessed all patch sites. The following scores were used to express the response observed at the time of examination: 0=No evidence of irritation, 1=Minimal erythema; barely perceptible, 2=Definite erythema, readily visible; or minimal edema; or minimal papular response, 3=Erythema and papules, 4=Definite edema, 5=Erythema, edema, and papules, 6=Vesicular eruption, 7=Strong reaction spreading beyond test site. Other features indicative irritation (Superficial irritation) scores were: Grade A/Score 0=Slight glazed appearance, Grade B/Score 1=Marked glazing, Grade C/Score 2=Glazing with peeling and cracking, Grade F/Score 3=Glazing with fissures, Grade G/Score 3=Film of dried serous exudate covering all or portion of the patch, Grade H/Score 3=Small petechial erosions and/or scabs. Superficial irritation scores were only provided if there was a dermal response score \>0. Full range was 0-10. Lower score indicates better tolerability.

Time frame: At Day 8

Population: The ITT (N=238) population included all participants who were randomized into the study and have skin irritation scores from at least one of the test sites available.

ArmMeasureValue (MEAN)Dispersion
Test ProductCombined Skin Irritation (Dermal Response) and Superficial Irritation (Other Effects) Scores at Induction Phase at Day 80 Score on scaleStandard Deviation 0
Reference ProductCombined Skin Irritation (Dermal Response) and Superficial Irritation (Other Effects) Scores at Induction Phase at Day 80 Score on scaleStandard Deviation 0

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