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Bioequivalence Study of Clindamycin Gel 1% in Treatment of Acne Vulgaris

A Multi-Center, Double-Blind, Randomized, Vehicle-Controlled, Parallel-Group Study Comparing Clindamycin 1% Gel To Clindamycin 1% Gel (Greenstone LLC) and Both Active Treatments to Vehicle Control in the Treatment of Acne Vulgaris

Status
Completed
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03522441
Enrollment
1125
Registered
2018-05-11
Start date
2018-04-27
Completion date
2019-04-22
Last updated
2020-10-05

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

Conditions

Acne Vulgaris

Brief summary

This is a randomized, double-blind, multiple-site, placebo-controlled, parallel-group study, designed to compare the efficacy and safety of generic Clindamycin 1% gel (Akorn), and the marketed product Clindamycin 1% gel (Greenstone LLC) in the treatment of acne vulgaris.

Interventions

Topical gel

DRUGPlacebo

Topical Placebo gel

Sponsors

Akorn, Inc.
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
DOUBLE (Subject, Investigator)

Eligibility

Sex/Gender
ALL
Age
12 Years to 40 Years
Healthy volunteers
No

Inclusion criteria

IInclusion Criteria: * Male or non-pregnant, non-lactating female, ≥12 and ≤40 years of age with a clinical diagnosis of acne vulgaris. * Have facial acne with: ≥20 facial inflammatory lesions (papules and pustules) and ≥25 non-inflammatory lesions (open and closed comedones), and ≤2 nodulocystic lesions (nodules and cysts) and have an IGA score of 2, 3 or 4.

Exclusion criteria

* Subject has more than 2 facial nodular lesions; any nodules present will be documented but not included in the inflammatory lesion count for analysis. * Subject has active cystic acne. * Subject has acne conglobata. * Subjects with excessive facial hair such as beards, sideburns, moustaches, etc. that would interfere with the diagnosis or assessment of acne.

Design outcomes

Primary

MeasureTime frame
Percent Change in the Number of Inflamed Lesions (Papules/Pustules)- Time Frame: Baseline to 12 WeeksPercent change from baseline to 12 weeks
Percent Change in the Non-inflammatory (Open and Closed Comedones) Lesion Counts - Change in Baseline to 12 WeekPercent change in baseline to 12 weeks

Countries

Belize, United States

Participant flow

Participants by arm

ArmCount
Clindamycin 1% Gel (Akorn Pharmaceuticals)
Clindamycin 1% Gel: Topical gel
450
Clindamycin 1% Gel (Greenstone LLC)
Clindamycin 1% Gel: Topical gel
450
Placebo
Placebo: Topical Placebo gel
225
Total1,125

Baseline characteristics

CharacteristicClindamycin 1% Gel (Akorn Pharmaceuticals)Clindamycin 1% Gel (Greenstone LLC)PlaceboTotal
Age, Continuous21.3 year
STANDARD_DEVIATION 7.38
20.6 year
STANDARD_DEVIATION 6.79
21.3 year
STANDARD_DEVIATION 7.01
21.0 year
STANDARD_DEVIATION 7.08
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Asian
7 Participants1 Participants1 Participants9 Participants
Race (NIH/OMB)
Black or African American
173 Participants170 Participants73 Participants416 Participants
Race (NIH/OMB)
More than one race
5 Participants5 Participants3 Participants13 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
1 Participants0 Participants0 Participants1 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
White
264 Participants274 Participants148 Participants686 Participants
Sex: Female, Male
Female
163 Participants177 Participants88 Participants428 Participants
Sex: Female, Male
Male
287 Participants273 Participants137 Participants697 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
deaths
Total, all-cause mortality
0 / 4500 / 4500 / 225
other
Total, other adverse events
0 / 4500 / 4500 / 225
serious
Total, serious adverse events
0 / 4500 / 4500 / 225

Outcome results

Primary

Percent Change in the Non-inflammatory (Open and Closed Comedones) Lesion Counts - Change in Baseline to 12 Week

Time frame: Percent change in baseline to 12 weeks

ArmMeasureValue (MEAN)Dispersion
Clindamycin 1% Gel (Akorn Pharmaceuticals)Percent Change in the Non-inflammatory (Open and Closed Comedones) Lesion Counts - Change in Baseline to 12 Week-50.45 percent change from baselineStandard Deviation 29.934
Clindamycin 1% Gel (Greenstone LLC)Percent Change in the Non-inflammatory (Open and Closed Comedones) Lesion Counts - Change in Baseline to 12 Week-57.42 percent change from baselineStandard Deviation 25.709
PlaceboPercent Change in the Non-inflammatory (Open and Closed Comedones) Lesion Counts - Change in Baseline to 12 Week-46.07 percent change from baselineStandard Deviation 29.922
Primary

Percent Change in the Number of Inflamed Lesions (Papules/Pustules)- Time Frame: Baseline to 12 Weeks

Time frame: Percent change from baseline to 12 weeks

ArmMeasureValue (MEAN)Dispersion
Clindamycin 1% Gel (Akorn Pharmaceuticals)Percent Change in the Number of Inflamed Lesions (Papules/Pustules)- Time Frame: Baseline to 12 Weeks-66.22 % mean change from baselineStandard Deviation 28.002
Clindamycin 1% Gel (Greenstone LLC)Percent Change in the Number of Inflamed Lesions (Papules/Pustules)- Time Frame: Baseline to 12 Weeks-72 % mean change from baselineStandard Deviation 27.19
PlaceboPercent Change in the Number of Inflamed Lesions (Papules/Pustules)- Time Frame: Baseline to 12 Weeks-16.02 % mean change from baselineStandard Deviation 34.238

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