ClinicalTrials.gg
CompletedNCT00776919Updated Nov 23, 2016Results posted

Trial of Clindamycin / Benzoyl Peroxide Gel in Subjects With Acne

A Phase 3 interventional study of clindamycin / benzoyl peroxide gel and clindamycin gel in Acne Vulgaris, sponsored by Stiefel, a GSK Company. Completed at 24 sites in 3 countries. Open to participants aged 12 Years to 45 Years. Per ClinicalTrials.gov, last updated 2016-11-23.

Sponsored by Stiefel, a GSK Company (part of GlaxoSmithKline) · Phase 3, Interventional, and Treatment

Phase
Phase 3
Study type
Interventional
Enrollment
1,315
Allocation
Randomized
Ages
12 Years to 45 Years
Sex
All
01

Study summary

This is a Randomized, Double-Blind, Controlled Study to evaluate the Safety and Efficacy of a clindamycin / benzoyl peroxide gel in Subjects with Acne Vulgaris

Read the detailed description

A multicenter, randomized, double-blind, comparator and vehicle-controlled study in subjects with acne vulgaris. Approximately 1320 subjects will be enrolled. Subjects will be randomized to 1 of 4 parallel study groups in a 1:1:1:1 ratio (clindamycin / benzoyl peroxide gel:clindamycin gel:BPO gel:vehicle gel).

02

Conditions studied

  • Acne Vulgaris

Browse trials for

Keywords

  • Acne Vulgaris
  • Acne
03

In context

Acne Vulgaris

790 studies on the registry are indexed under Acne Vulgaris; 93 are open to participants now.

This study's enrollment of 1,315 is above the median of 70 across 672 interventional studies indexed under Acne Vulgaris.

Browse Acne Vulgaris studies →

Lead sponsor

Stiefel, a GSK Company is the lead sponsor of 56 studies on the registry; none are open to participants now.

First submitted before Stiefel became part of GlaxoSmithKline.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
12 Years to 45 Years
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Be 12 to 45 years of age, inclusive, and in good general health.
  • Clinical diagnosis of acne vulgaris
  • Females of participating in the study must agree to use a medically acceptable method of while receiving protocol-assigned product.
  • Have the ability and willingness to follow all study procedures, attend all scheduled visits, and successfully complete the study.
  • Have the ability to understand and sign a written form, which must be completed prior to study specific tasks being performed. Subjects under the legal age of consent in the state/province/country where the study is conducted must provide assent and have the written informed consent of a parent or guardian.

Exclusion criteria

Exclusion Criteria:

  • Are pregnant or breast-feeding.
  • Have a history or presence of other conditions that may increase the risk of the subject participating in the study and/or affect the evaluated outcomes.
  • Used topical antibiotics on the face or used systemic antibiotics within the past 2 weeks.
  • Used topical on the face or systemic corticosteroids within the past 4 weeks. Use of inhaled, intra-articular, or intra-lesional steroids other than for facial acne is acceptable.
  • Used systemic retinoids within the past 6 months or topical retinoids within the past 6 weeks.
  • Received treatment with estrogens (including oral, implanted, injected and topical ), androgens, or anti-androgenic agents for 12 weeks or less immediately prior to starting study product. Subjects who have been treated with estrogens, as described above, androgens, or anti-androgenic agents for more than 12 consecutive weeks prior to start of study product are allowed to enroll as long as they do not expect to change dose, drug, or discontinue use during the study.
  • Used topical anti-acne medications (eg, BPO, azelaic acid, resorcinol, salicylates, etc.) within the past 2 weeks.
  • Used abradents or facial procedures, within the past 2 weeks.
  • Use medications that may exacerbate acne.
  • Have a known or have had previous allergic reaction to any of the active components, lincomycin, or of the study product.
  • Used any therapy within the past 4 weeks, or currently participating in another clinical study.
Terms in these criteria, in plain language(7)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Childbearing potential

Able to become pregnant: from the first period until menopause, unless permanently unable to through surgery (removal of the womb, or of both ovaries or both fallopian tubes).

Criteria for people of childbearing potential usually ask for a negative pregnancy test and for contraception during the study and for a time after it.

Contraception

Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.

Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

Corticosteroids (steroids)

Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.

Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.

Hypersensitivity

An allergy, or another reaction of the immune system, to a substance. “Hypersensitivity to the study drug” means a known allergic reaction to it — not every side effect a medicine can have.

Excipients

The other ingredients in a medicine besides the active drug, such as fillers, colours or preservatives.

Investigational drug or device

A drug or device being studied in a clinical trial.

It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.

05

Study design

Phase
Phase 3
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Quadruple (Participant, Care provider, Investigator, Outcomes assessor)
Enrollment
1,315 participants (actual)

Study arms

  • Experimental
    1

    clindamycin / benzoyl peroxide gel

    Drug: clindamycin / benzoyl peroxide gel

  • Active comparator
    2

    Clindamycin gel

    Drug: clindamycin gel

  • Active comparator
    3

    BPO gel

    Drug: BPO gel

  • Placebo comparator
    4

    vehicle gel

    Drug: vehicle gel

Interventions

  • Drugclindamycin / benzoyl peroxide gel

    Drug pages: Clindamycin · Benzoyl Peroxide

    Once a day application to the face

  • Once a day application to the face

  • DrugBPO gel

    Once a day application to the face

  • Drugvehicle gel

    Once a day application to the face

06

What researchers measure

Primary outcomes

  1. Number of Participants With Improvement of at Least 2 Grades in the Investigator's Static Global Assessment (ISGA) Score From Baseline to Week 12

    During each study visit, investigators/assessors evaluated acne severity of the participants' faces using the ISGA scale: 0=clear skin with no lesions (L); 1=almost clear, rare non-inflammatory L; 2=mild, some non-inflammatory L with no more than a few inflammatory L, no nodular L; 3=moderate, many non-inflammatory L, may have some inflammatory L, but no more than 1 small nodular L; 4=severe, many non-inflammatory and inflammatory L, but no more than a few nodular L; 5=very severe, many non-inflammatory and inflammatory L, and more than a few nodular L.

    Time frame: Baseline (Day 1) and Week 12

  2. Mean Change From Baseline (BL) to Week 12 in Inflammatory Lesion Counts

    During each study visit, trained study personnel at every investigational center assessed the inflammatory (pustules \[small inflamed elevation of the skin that is filled with pus\], papules \[solid elevation of skin with no visible fluid\], nodules \[larger than papules with significant depth\]) lesion counts for each participant. Each type of lesion was counted separately, and counts were taken from the face (including forehead, nose, cheeks, and chin). Missing values were imputed using the last observation carried forward (LOCF) method.

    Time frame: Baseline (Day 1) and Week 12

  3. Mean Change From Baseline to Week 12 in Non-inflammatory Lesion Counts

    During each study visit, trained study personnel at every investigational center assessed the non-inflammatory (open comedones \[blackheads\] and closed comedones \[whiteheads\]) lesion counts for each participant. Each type of lesion was counted separately, and counts were taken from the face (including forehead, nose, cheeks, and chin).

    Time frame: Baseline (Day 1) and Week 12

  4. Mean Change From Baseline to Week 12 in Total Lesion Counts

    During each study visit, trained study personnel at every investigational center assessed the inflammatory (pustules, papules, nodules) and non-inflammatory (open and closed comedones) lesion counts for each participant. Each type of lesion was counted separately; the lesion counts were taken from the face (including forehead, nose, cheeks, and chin). Total lesion counts were calculated as the sum of the inflammatory and non-inflammatory lesion counts.

    Time frame: Baseline (Day 1) and Week 12

Secondary outcomes

  1. Mean Percent Change From Baseline to Week 12 in Lesion Counts (Total, Inflammatory, and Non-inflammatory)

    During each study visit, trained study personnel at every investigational center assessed the inflammatory (pustules, papules, nodules) and non-inflammatory (open and closed comedones) lesion counts for each participant. Each type of lesion was counted separately; the lesion counts were taken from the face (including forehead, nose, cheeks, and chin). Total lesion counts were calculated as the sum of the inflammatory and non-inflammatory lesion counts. Percent change from Baseline to Week 12 was calculated as the value at Week 12 minus the value at Baseline divided by the Baseline value \* 100.

    Time frame: Baseline (Day 1) and Week 12

  2. Number of Participants Who Had a Subject Global Assessment (SGA) Score of 0 or 1 at Week 12

    During each study visit, participants evaluated their facial acne (excluding the scalp) using the SGA scale: 0=free of acne, with only an occasional blackhead/whitehead; 1=several blackheads/whiteheads and small pimples, no tender deep-seated bumps/cysts; 2=several to many blackheads/whiteheads and small to medium-sized pimples, one deep-seated bump/cyst; 3=many blackheads/whiteheads, many medium- to large-sized pimples, few deep-seated bumps/cysts; 4=presence of blackheads/whiteheads, several to many medium- to large-sized pimples, deep-seated bumps/cysts dominate.

    Time frame: Week 12

  3. Number of Participants Who Had an ISGA Score of 0 or 1 at Week 12

    During each study visit, investigators/assessors evaluated the acne severity of participants' faces using the ISGA scal: 0=clear skin with no lesions (L); 1=almost clear, rare non-inflammatory L; 2=mild, some non-inflammatory L with no more than a few inflammatory L, no nodular L; 3=moderate, many non-inflammatory L, may have some inflammatory L, but no more than 1 small nodular L; 4=severe, many non-inflammatory and inflammatory L, but no more than a few nodular L; 5=very severe, many non-inflammatory and inflammatory L, and more than a few nodular L.

    Time frame: Week 12

  4. Mean Change From Baseline to Week 12 in Systolic and Diastolic Blood Pressure

    Systolic and diastolic blood pressure were measured at Baseline and Week 12 (end of study). Mean change from Baseline was calculated as the mean value at Week 12 minus the mean value at Baseline.

    Time frame: Baseline (Day 1) and Week 12

  5. Mean Change From Baseline to Week 12 in Temperature

    Temperature was measured at Baseline and Week 12 (end of study). Mean change from Baseline was calculated as the mean value at Week 12 minus the mean value at Baseline.

    Time frame: Baseline (Day 1) and Week 12

  6. Mean Change From Baseline to Week 12 in Pulse Rate

    Pulse rate was measured at Baseline and Week 12 (end of study). Mean change from Baseline was calculated as the mean value at Week 12 minus the mean value at Baseline.

    Time frame: Baseline (Day 1) and Week 12

  7. Mean Change From Baseline to Weeks 2, 4, 8, and 12 in Erythema, Dryness, and Peeling

    Erythema (Er, redness), dryness (Dr), and peeling (Pn), were evaluated independently by the investigator as: 0 (absent)=no Er, Dr, or Pn; 1 (slight)=faint red/pink coloration (col.), barely perceptible Dr with no flakes or fissure, mild localized Pn; 2 (mild)=light red/pink col., perceptible Dr with no flakes/fissure, mild and diffuse Pn; 3 (moderate)=medium red col., easily noted Dr and flakes but no fissure; 4 (severe)=beet red col., Dr with flakes and fissure, prominent dense Pn. Change from Baseline was calculated as the value at Weeks 2, 4, 8, and 12 minus the the value at Baseline.

    Time frame: Baseline; Weeks 2, 4, 8, and 12

  8. Mean Change From Baseline to Weeks 2, 4, 8, and 12 in Itching and Burning/Stinging

    Itching and burning/stinging (piercing pain) were evaluated independently by the investigator as: 0 (none)=normal, no discomfort; 1 (slight)=noticeable discomfort that caused intermittent awareness; 2 (moderate)=noticeable discomfort that caused intermittent awareness and interfered occasionally with normal daily activities; 3 (strong)=definite continuous discomfort that interfered with normal daily activities. Change from Baseline was calculated as the value at Weeks 2, 4, 8, and 12 minus the value at Baseline.

    Time frame: Baseline; Weeks 2, 4, 8, and 12

  9. Mean Duration of Study Product Use

    Mean duration of study product use was calculated as the average total duration inclusive of missed applications of the study product.

    Time frame: Baseline (Day 1) through Week 12

  10. Number of Participants Reporting the Indicated Treatment-emergent Adverse Events (AEs) Resulting in Study Product Discontinuation

    An AE included, but was not limited to, any clinically significant worsening of a pre-existing condition; an event occurring from overdose (i.e., a dose higher than that indicated in the protocol) of the study product, whether accidental or intentional; an event occurring from abuse (e.g., use for nonstudy reasons) of the study product; or an event that was associated with the discontinuation of the use of the study product.

    Time frame: Baseline (Day 1) through Week 12

07

Results

Posted Jan 30, 2012

Participant flow

Participant flow — Overall Study
MilestoneDuac Low-dose (LD) GelClindamycin GelBPO GelVehicle Gel
Started327328328332
Completed300295296293
Not completed27333239
Withdrew: Withdrawal by subject16141526
Withdrew: Lost to follow-up812118
Withdrew: Adverse event1022
Withdrew: Protocol violation1201
Withdrew: Other: lack of efficacy/lost medication1542

Outcome measures

PrimaryNumber of Participants With Improvement of at Least 2 Grades in the Investigator's Static Global Assessment (ISGA) Score From Baseline to Week 12

During each study visit, investigators/assessors evaluated acne severity of the participants' faces using the ISGA scale: 0=clear skin with no lesions (L); 1=almost clear, rare non-inflammatory L; 2=mild, some non-inflammatory L with no more than a few inflammatory L, no nodular L; 3=moderate, many non-inflammatory L, may have some inflammatory L, but no more than 1 small nodular L; 4=severe, many non-inflammatory and inflammatory L, but no more than a few nodular L; 5=very severe, many non-inflammatory and inflammatory L, and more than a few nodular L.

Time frame:
Baseline (Day 1) and Week 12
Reported as:
Number · participants
Number of Participants With Improvement of at Least 2 Grades in the Investigator's Static Global Assessment (ISGA) Score From Baseline to Week 12
participantsDuac Low-dose (LD) GelClindamycin GelBPO GelVehicle Gel
Number of Participants With Improvement of at Least 2 Grades in the Investigator's Static Global Assessment (ISGA) Score From Baseline to Week 121298210059
Statistical analysis
  • Duac Low-dose (LD) Gel vs Clindamycin Gel · Cochran-Mantel-Haenszel · p = <0.001
  • Duac Low-dose (LD) Gel vs BPO Gel · Cochran-Mantel-Haenszel · p = 0.016
  • Duac Low-dose (LD) Gel vs Vehicle Gel · Cochran-Mantel-Haenszel · p = <0.001
PrimaryMean Change From Baseline (BL) to Week 12 in Inflammatory Lesion Counts

During each study visit, trained study personnel at every investigational center assessed the inflammatory (pustules \[small inflamed elevation of the skin that is filled with pus\], papules \[solid elevation of skin with no visible fluid\], nodules \[larger than papules with significant depth\]) lesion counts for each participant. Each type of lesion was counted separately, and counts were taken from the face (including forehead, nose, cheeks, and chin). Missing values were imputed using the last observation carried forward (LOCF) method.

Time frame:
Baseline (Day 1) and Week 12
Reported as:
Mean · lesion counts
Mean Change From Baseline (BL) to Week 12 in Inflammatory Lesion Counts
lesion countsDuac Low-dose (LD) GelClindamycin GelBPO GelVehicle Gel
Mean Change From Baseline (BL) to Week 12 in Inflammatory Lesion Counts-18.2 ± 10.4-15.6 ± 11.6-16.8 ± 11.5-13.1 ± 12.1
Statistical analysis
  • Duac Low-dose (LD) Gel vs Clindamycin Gel · ANCOVA · p = <0.001 (Based on an analysis of covariance (ANCOVA) with factors of treatment, center, and interaction of treatment-center. If the treatment-center interaction was not significant at the 0.1 level, this interaction was excluded from the ANCOVA model.)
  • Duac Low-dose (LD) Gel vs BPO Gel · ANCOVA · p = 0.015 (Based on an analysis of covariance (ANCOVA) with factors of treatment, center, and interaction of treatment-center. If the treatment-center interaction was not significant at the 0.1 level, this interaction was excluded from the ANCOVA model.)
  • Duac Low-dose (LD) Gel vs Vehicle Gel · ANCOVA · p = <0.001 (Based on an analysis of covariance (ANCOVA) with factors of treatment, center, and interaction of treatment-center. If the treatment-center interaction was not significant at the 0.1 level, this interaction was excluded from the ANCOVA model.)
PrimaryMean Change From Baseline to Week 12 in Non-inflammatory Lesion Counts

During each study visit, trained study personnel at every investigational center assessed the non-inflammatory (open comedones \[blackheads\] and closed comedones \[whiteheads\]) lesion counts for each participant. Each type of lesion was counted separately, and counts were taken from the face (including forehead, nose, cheeks, and chin).

Time frame:
Baseline (Day 1) and Week 12
Reported as:
Mean · lesion counts
Mean Change From Baseline to Week 12 in Non-inflammatory Lesion Counts
lesion countsDuac Low-dose (LD) GelClindamycin GelBPO GelVehicle Gel
Mean Change From Baseline to Week 12 in Non-inflammatory Lesion Counts-24.8 ± 20.1-19.8 ± 19.8-22.2 ± 17.6-14.8 ± 21.6
Statistical analysis
  • Duac Low-dose (LD) Gel vs Clindamycin Gel · ANCOVA · p = <0.001 (Based on an analysis of covariance (ANCOVA) with factors of treatment, center, and interaction of treatment-center. If the treatment-center interaction was not significant at the 0.1 level, this interaction was excluded from the ANCOVA model.)
  • Duac Low-dose (LD) Gel vs BPO Gel · ANCOVA · p = 0.102 (Based on an analysis of covariance (ANCOVA) with factors of treatment, center, and interaction of treatment-center. If the treatment-center interaction was not significant at the 0.1 level, this interaction was excluded from the ANCOVA model.)
  • Duac Low-dose (LD) Gel vs Vehicle Gel · ANCOVA · p = <0.001 (Based on an analysis of covariance (ANCOVA) with factors of treatment, center, and interaction of treatment-center. If the treatment-center interaction was not significant at the 0.1 level, this interaction was excluded from the ANCOVA model.)
PrimaryMean Change From Baseline to Week 12 in Total Lesion Counts

During each study visit, trained study personnel at every investigational center assessed the inflammatory (pustules, papules, nodules) and non-inflammatory (open and closed comedones) lesion counts for each participant. Each type of lesion was counted separately; the lesion counts were taken from the face (including forehead, nose, cheeks, and chin). Total lesion counts were calculated as the sum of the inflammatory and non-inflammatory lesion counts.

Time frame:
Baseline (Day 1) and Week 12
Reported as:
Mean · lesion counts
Mean Change From Baseline to Week 12 in Total Lesion Counts
lesion countsDuac Low-dose (LD) GelClindamycin GelBPO GelVehicle Gel
Mean Change From Baseline to Week 12 in Total Lesion Counts-43.0 ± 27.1-35.5 ± 27.1-39.0 ± 25.0-27.8 ± 29.8
Statistical analysis
  • Duac Low-dose (LD) Gel vs Clindamycin Gel · ANCOVA · p = <0.001 (Based on an analysis of covariance (ANCOVA) with factors of treatment, center, and interaction of treatment-center. If the treatment-center interaction was not significant at the 0.1 level, this interaction was excluded from the ANCOVA model.)
  • Duac Low-dose (LD) Gel vs BPO Gel · ANCOVA · p = 0.032 (Based on an analysis of covariance (ANCOVA) with factors of treatment, center, and interaction of treatment-center. If the treatment-center interaction was not significant at the 0.1 level, this interaction was excluded from the ANCOVA model.)
  • Duac Low-dose (LD) Gel vs Vehicle Gel · ANCOVA · p = <0.001 (Based on an analysis of covariance (ANCOVA) with factors of treatment, center, and interaction of treatment-center. If the treatment-center interaction was not significant at the 0.1 level, this interaction was excluded from the ANCOVA model.)
SecondaryMean Percent Change From Baseline to Week 12 in Lesion Counts (Total, Inflammatory, and Non-inflammatory)

During each study visit, trained study personnel at every investigational center assessed the inflammatory (pustules, papules, nodules) and non-inflammatory (open and closed comedones) lesion counts for each participant. Each type of lesion was counted separately; the lesion counts were taken from the face (including forehead, nose, cheeks, and chin). Total lesion counts were calculated as the sum of the inflammatory and non-inflammatory lesion counts. Percent change from Baseline to Week 12 was calculated as the value at Week 12 minus the value at Baseline divided by the Baseline value \* 100.

Time frame:
Baseline (Day 1) and Week 12
Reported as:
Mean · Percent change in lesion counts
Mean Percent Change From Baseline to Week 12 in Lesion Counts (Total, Inflammatory, and Non-inflammatory)
Percent change in lesion countsDuac Low-dose (LD) GelClindamycin GelBPO GelVehicle Gel
Inflammatory Lesions-68.9 ± 29.6-58.1 ± 35.8-61.8 ± 31.5-48.8 ± 37.1
Non-inflammatory Lesions-53.9 ± 32.2-43.3 ± 39.6-50.8 ± 33.5-34.0 ± 47.2
Total Lesions-59.8 ± 28.0-49.2 ± 33.8-55.5 ± 28.8-40.4 ± 37.5
SecondaryNumber of Participants Who Had a Subject Global Assessment (SGA) Score of 0 or 1 at Week 12

During each study visit, participants evaluated their facial acne (excluding the scalp) using the SGA scale: 0=free of acne, with only an occasional blackhead/whitehead; 1=several blackheads/whiteheads and small pimples, no tender deep-seated bumps/cysts; 2=several to many blackheads/whiteheads and small to medium-sized pimples, one deep-seated bump/cyst; 3=many blackheads/whiteheads, many medium- to large-sized pimples, few deep-seated bumps/cysts; 4=presence of blackheads/whiteheads, several to many medium- to large-sized pimples, deep-seated bumps/cysts dominate.

Time frame:
Week 12
Reported as:
Number · participants
Number of Participants Who Had a Subject Global Assessment (SGA) Score of 0 or 1 at Week 12
participantsDuac Low-dose (LD) GelClindamycin GelBPO GelVehicle Gel
Number of Participants Who Had a Subject Global Assessment (SGA) Score of 0 or 1 at Week 12209171189154
SecondaryNumber of Participants Who Had an ISGA Score of 0 or 1 at Week 12

During each study visit, investigators/assessors evaluated the acne severity of participants' faces using the ISGA scal: 0=clear skin with no lesions (L); 1=almost clear, rare non-inflammatory L; 2=mild, some non-inflammatory L with no more than a few inflammatory L, no nodular L; 3=moderate, many non-inflammatory L, may have some inflammatory L, but no more than 1 small nodular L; 4=severe, many non-inflammatory and inflammatory L, but no more than a few nodular L; 5=very severe, many non-inflammatory and inflammatory L, and more than a few nodular L.

Time frame:
Week 12
Reported as:
Number · participants
Number of Participants Who Had an ISGA Score of 0 or 1 at Week 12
participantsDuac Low-dose (LD) GelClindamycin GelBPO GelVehicle Gel
Number of Participants Who Had an ISGA Score of 0 or 1 at Week 121489111681
SecondaryMean Change From Baseline to Week 12 in Systolic and Diastolic Blood Pressure

Systolic and diastolic blood pressure were measured at Baseline and Week 12 (end of study). Mean change from Baseline was calculated as the mean value at Week 12 minus the mean value at Baseline.

Time frame:
Baseline (Day 1) and Week 12
Reported as:
Mean · Millimeters of mercury (mmHg)
Mean Change From Baseline to Week 12 in Systolic and Diastolic Blood Pressure
Millimeters of mercury (mmHg)Duac Low-dose (LD) GelClindamycin GelBPO GelVehicle Gel
Systolic blood pressure0 ± 100 ± 110 ± 120 ± 10
Diastolic blood pressure0 ± 81 ± 90 ± 80 ± 8
SecondaryMean Change From Baseline to Week 12 in Temperature

Temperature was measured at Baseline and Week 12 (end of study). Mean change from Baseline was calculated as the mean value at Week 12 minus the mean value at Baseline.

Time frame:
Baseline (Day 1) and Week 12
Reported as:
Mean · Degrees centigrade
Mean Change From Baseline to Week 12 in Temperature
Degrees centigradeDuac Low-dose (LD) GelClindamycin GelBPO GelVehicle Gel
Mean Change From Baseline to Week 12 in Temperature-0.1 ± 0.40.0 ± 0.40.0 ± 0.40.0 ± 0.4
SecondaryMean Change From Baseline to Week 12 in Pulse Rate

Pulse rate was measured at Baseline and Week 12 (end of study). Mean change from Baseline was calculated as the mean value at Week 12 minus the mean value at Baseline.

Time frame:
Baseline (Day 1) and Week 12
Reported as:
Mean · Beats per minute (bpm)
Mean Change From Baseline to Week 12 in Pulse Rate
Beats per minute (bpm)Duac Low-dose (LD) GelClindamycin GelBPO GelVehicle Gel
Mean Change From Baseline to Week 12 in Pulse Rate1 ± 102 ± 112 ± 92 ± 11
SecondaryMean Change From Baseline to Weeks 2, 4, 8, and 12 in Erythema, Dryness, and Peeling

Erythema (Er, redness), dryness (Dr), and peeling (Pn), were evaluated independently by the investigator as: 0 (absent)=no Er, Dr, or Pn; 1 (slight)=faint red/pink coloration (col.), barely perceptible Dr with no flakes or fissure, mild localized Pn; 2 (mild)=light red/pink col., perceptible Dr with no flakes/fissure, mild and diffuse Pn; 3 (moderate)=medium red col., easily noted Dr and flakes but no fissure; 4 (severe)=beet red col., Dr with flakes and fissure, prominent dense Pn. Change from Baseline was calculated as the value at Weeks 2, 4, 8, and 12 minus the the value at Baseline.

Time frame:
Baseline; Weeks 2, 4, 8, and 12
Reported as:
Mean · scores on a scale
Mean Change From Baseline to Weeks 2, 4, 8, and 12 in Erythema, Dryness, and Peeling
scores on a scaleDuac Low-dose (LD) GelClindamycin GelBPO GelVehicle Gel
Erythema, Week 2, n=298, 302, 306, 306-0.05 ± 0.63-0.01 ± 0.58-0.07 ± 0.56-0.02 ± 0.61
Erythema, Week 4, n=298, 300, 299, 306-0.07 ± 0.66-0.07 ± 0.64-0.08 ± 0.67-0.06 ± 0.64
Erythema, Week 8, n=297, 296, 294, 293-0.12 ± 0.71-0.08 ± 0.67-0.15 ± 0.68-0.08 ± 0.73
Erythema, Week 12, n=297, 296, 296, 294-0.17 ± 0.66-0.18 ± 0.63-0.17 ± 0.67-0.13 ± 0.69
Dryness, Week 2, n=298, 302, 306, 3060.07 ± 0.540.03 ± 0.480.09 ± 0.610.04 ± 0.50
Dryness, Week 4, n=298, 300, 299, 3060.05 ± 0.58-0.02 ± 0.510.08 ± 0.550.00 ± 0.52
Dryness, Week 8, n=297, 296, 294, 2930.00 ± 0.53-0.02 ± 0.580.05 ± 0.570.02 ± 0.56
Dryness, Week 12, n=297, 296, 296, 294-0.07 ± 0.62-0.10 ± 0.53-0.01 ± 0.57-0.04 ± 0.55
Peeling, Week 2, n=298, 302, 306, 3060.03 ± 0.430.02 ± 0.360.08 ± 0.510.02 ± 0.41
Peeling, Week 4, n=298, 300, 299, 306-0.01 ± 0.390.00 ± 0.360.01 ± 0.390.00 ± 0.40
Peeling, Week 8, n=297, 296, 294, 293-0.01 ± 0.41-0.01 ± 0.42-0.01 ± 0.400.00 ± 0.43
Peeling, Week 12, n=297, 296, 296, 294-0.08 ± 0.44-0.06 ± 0.40-0.02 ± 0.50-0.04 ± 0.43
SecondaryMean Change From Baseline to Weeks 2, 4, 8, and 12 in Itching and Burning/Stinging

Itching and burning/stinging (piercing pain) were evaluated independently by the investigator as: 0 (none)=normal, no discomfort; 1 (slight)=noticeable discomfort that caused intermittent awareness; 2 (moderate)=noticeable discomfort that caused intermittent awareness and interfered occasionally with normal daily activities; 3 (strong)=definite continuous discomfort that interfered with normal daily activities. Change from Baseline was calculated as the value at Weeks 2, 4, 8, and 12 minus the value at Baseline.

Time frame:
Baseline; Weeks 2, 4, 8, and 12
Reported as:
Mean · scores on a scale
Mean Change From Baseline to Weeks 2, 4, 8, and 12 in Itching and Burning/Stinging
scores on a scaleDuac Low-dose (LD) GelClindamycin GelBPO GelVehicle Gel
Itching, Week 2, n=297, 301, 305, 305-0.11 ± 0.67-0.18 ± 0.67-0.04 ± 0.64-0.06 ± 0.65
Itching, Week 4, n=298, 299, 299, 305-0.11 ± 0.67-0.18 ± 0.68-0.07 ± 0.68-0.10 ± 0.61
Itching, Week 8, n=297, 295, 293, 291-0.16 ± 0.75-0.24 ± 0.69-0.08 ± 0.68-0.08 ± 0.62
Itching, Week 12, n=297, 295, 294, 293-0.21 ± 0.70-0.28 ± 0.67-0.13 ± 0.72-0.13 ± 0.63
Burning/Stinging, Week 2, n=297, 301, 305, 3050.02 ± 0.58-0.06 ± 0.48-0.02 ± 0.56-0.05 ± 0.53
Burning/Stinging, Week 4, n=298, 2991, 299, 305-0.06 ± 0.57-0.09 ± 0.46-0.05 ± 0.55-0.02 ± 0.59
Burning/Stinging, Week 8, n=297, 295, 293, 291-0.05 ± 0.57-0.09 ± 0.46-0.05 ± 0.55-0.06 ± 0.54
Burning/Stinging, Week 12, n=297, 295, 294, 293-0.09 ± 0.58-0.13 ± 0.48-0.04 ± 0.60-0.04 ± 0.49
SecondaryMean Duration of Study Product Use

Mean duration of study product use was calculated as the average total duration inclusive of missed applications of the study product.

Time frame:
Baseline (Day 1) through Week 12
Reported as:
Mean · days
Mean Duration of Study Product Use
daysDuac Low-dose (LD) GelClindamycin GelBPO GelVehicle Gel
Mean Duration of Study Product Use79.5 ± 16.478.0 ± 17.978.0 ± 18.477.8 ± 18.4
SecondaryNumber of Participants Reporting the Indicated Treatment-emergent Adverse Events (AEs) Resulting in Study Product Discontinuation

An AE included, but was not limited to, any clinically significant worsening of a pre-existing condition; an event occurring from overdose (i.e., a dose higher than that indicated in the protocol) of the study product, whether accidental or intentional; an event occurring from abuse (e.g., use for nonstudy reasons) of the study product; or an event that was associated with the discontinuation of the use of the study product.

Time frame:
Baseline (Day 1) through Week 12
Reported as:
Number · participants
Number of Participants Reporting the Indicated Treatment-emergent Adverse Events (AEs) Resulting in Study Product Discontinuation
participantsDuac Low-dose (LD) GelClindamycin GelBPO GelVehicle Gel
Application Site Dermatitis1000
Application Site Hypersensitivity0010
Application Site Pruritus0011
Varicella0001

Adverse events

Non-serious events are listed at a 0% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Duac Low-dose (LD) Gel—0/327 (0%)72/327 (22%)
Clindamycin Gel—0/328 (0%)83/328 (25.3%)
BPO Gel—1/328 (0.3%)102/328 (31.1%)
Vehicle Gel—0/332 (0%)87/332 (26.2%)
Most frequent serious events
Most frequent serious events
EventDuac Low-dose (LD) GelClindamycin GelBPO GelVehicle Gel
DepressionPsychiatric disorders0/3270/3281/3280/332
Most frequent other events
Showing 10 of 142
Most frequent other events
EventDuac Low-dose (LD) GelClindamycin GelBPO GelVehicle Gel
NasopharyngitisInfections and infestations27/32723/32832/32819/332
Upper Respiratory Tract InfectionInfections and infestations11/32713/32813/32813/332
HeadacheNervous system disorders4/3278/3289/3287/332
InfluenzaInfections and infestations3/3275/3281/3284/332
Joint SprainInjury, poisoning and procedural complications0/3272/3285/3280/332
SunburnInjury, poisoning and procedural complications2/3275/3281/3282/332
Pharyngolaryngeal PainRespiratory, thoracic and mediastinal disorders3/3270/3282/3282/332
Stomach DiscomfortGastrointestinal disorders2/3270/3280/3280/332
Application Site DermatitisGeneral disorders2/3270/3280/3280/332
Application Site Photosensitivity ReactionGeneral disorders2/3271/3281/3282/332

Baseline characteristics

Age, Continuous
Age, Continuous(Years)Duac Low-dose (LD) GelClindamycin GelBPO GelVehicle GelTotal
Mean20.0 ± 7.020.2 ± 6.920.6 ± 7.120.7 ± 7.420.4 ± 7.1
Sex: Female, Male
Sex: Female, Male(Participants)Duac Low-dose (LD) GelClindamycin GelBPO GelVehicle GelTotal
Female202180203210795
Male125148125122520
Race/Ethnicity, Customized
Race/Ethnicity, Customized(participants)Duac Low-dose (LD) GelClindamycin GelBPO GelVehicle GelTotal
White2592742512581042
Black47375454192
Asian139171655
Multiracial577423
American Indian or Alaska Native31004
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Study locations

24 sites
  • Rady Children's Hospital San Diego, Div. of Pediatric & Adolescents Dermatology
    San Diego, California 92123, United States
  • The Laser Institute for Dermatology
    Santa Monica, California 90404, United States
  • Cherry Creek Research, Inc.
    Denver, Colorado 80209, United States
  • Skin Care Research, Inc.
    Boca Raton, Florida 33486, United States
  • University of Miami Cosmetic Medicine and Research Institute
    Miami Beach, Florida 33140, United States
  • FXM Research
    Miami, Florida 33175, United States
  • Atlanta Dermatology & Vein Research Center, LLC
    Alpharetta, Georgia 30022, United States
  • SKINQRI
    Lincolnshire, Illinois 60069, United States
  • Dawes Fretzin Clinical Research Group
    Indianapolis, Indiana 46260, United States
  • DermResearch, PLLC
    Louisville, Kentucky 40217, United States
  • Somerset Skin Centre
    Troy, Michigan 48084, United States
  • Dermatology Associates of Rochester, PC
    Rochester, New York 14623, United States
  • DermResearch Center of New York
    Stony Brook, New York 11790, United States
  • The Skin Wellness Center, PC
    Knoxville, Tennessee 37922, United States
  • Arlington Center for Dermatology
    Arlington, Texas 76011, United States
  • Progressive Clinical Research
    San Antonio, Texas 78229, United States
  • Dermatology and Skin Care Center FXM Research International
    Belize City, Belize
  • Dr. Moguel's Clinic/FXM Research International
    Belize City, Belize
  • Guildford Dermatology Specialist
    Surrey, British Columbia V3R6A7, Canada
  • Dermatrial Research
    Hamilton, Ontario L8N 1V6, Canada
  • Lynderm Research, Inc.
    Markham, Ontario L3P 1A8, Canada
  • North Bay Dermatology Centre
    North Bay, Ontario P1B3Z7, Canada
  • CRDQ Centre de Recherche Dermatologique du Quebec
    Quebec, G1V 4X7, Canada
  • Nexus Clinical Research
    St. John's, NL A1B 3E1, Canada
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References and documents

Publications

  • Eichenfield LF, Alio Saenz AB. Safety and efficacy of clindamycin phosphate 1.2%-benzoyl peroxide 3% fixed-dose combination gel for the treatment of acne vulgaris: a phase 3, multicenter, randomized, double-blind, active- and vehicle-controlled study. J Drugs Dermatol. 2011 Dec;10(12):1382-96. PubMed 22134562 ↗

Individual participant data

Plan to share: Yes — Patient-level data for this study will be made available through www.clinicalstudydatarequest.com following the timelines and process described on this site.

10

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Nov 23, 2016, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT00776919
Collaborators
Rho, Inc., Quintiles, Inc., GlaxoSmithKline
Responsible party
Sponsor
First posted
Oct 22, 2008
Start date
Oct 2008
Primary completion
Sep 2009
Completion
Sep 2009
Results posted
Jan 30, 2012
Last update
Nov 23, 2016

Study contacts

GSK Clinical Trials
study director · GlaxoSmithKline

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Oct 2016. You cannot join it, but the record below documents what was studied.

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Studies of the drugs tested here: Clindamycin · Benzoyl Peroxide

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