Title

A Phase 2 Dose Escalating Study to Evaluate the Safety and Efficacy of CB-03-01 Cream in Subjects With Facial Acne Vulgaris
A Phase 2, Multicenter, Randomized, Double-Blind, Vehicle-Controlled, Dose Escalating Study to Evaluate the Safety and Efficacy of Cortexolone 17a-Propionate (CB-03-01) Cream Applied Once or Twice-Daily for 12 Weeks in Subjects With Facial Acne Vulgaris
  • Phase

    Phase 2
  • Study Type

    Interventional
  • Intervention/Treatment

    clascoterone ...
  • Study Participants

    363
CB-03-01 is being developed for the topical treatment of acne vulgaris, an androgen-dependent skin disorder. The purpose of this study is to compare the safety and efficacy of multiple concentrations of CB-03-01 to vehicle in the treatment of acne vulgaris.
Study Started
Jun 30
2012
Primary Completion
Feb 28
2014
Study Completion
Feb 28
2014
Results Posted
Nov 16
2020
Last Update
Nov 16
2020

Drug CB-03-01

Topical cream, applied once a day

  • Other names: clascoterone

Drug Vehicle

Topical cream, applied once or twice a day

Drug CB-03-01

Topical cream, applied twice a day

  • Other names: clascoterone

Low-dose active, BID Experimental

low dose of CB-03-01, 0.1% applied twice a day

Medium-dose active, BID Experimental

medium dose of CB-03-01, 0.5% applied twice a day

High-dose active, QD Experimental

high dose of CB-03-01, 1% applied once a day

High-dose active, BID Experimental

high dose of CB-03-01, 1% applied twice a day

Vehicle, QD or BID Placebo Comparator

vehicle cream, applied once or twice a day

Criteria

Inclusion Criteria:

Subject is male or non-pregnant female. Females must be post-menopausal, surgically sterile or using highly effective birth control methods.
Subject has provided written and verbal informed consent/assent.
Subject has facial acne vulgaris (including the nose).
Subject is willing to comply with study instructions and return to the clinic for required visits.
Subject has used the same type and brand of make-up, other facial products (including cleanser) and hair products (e.g., shampoo, gel, hair spray, mousse, etc.) for at least one month prior to the study start and agrees to continue his/her other general skin and hair care products and regimen for the entire study.

Exclusion Criteria:

Subject is pregnant, lactating, or is planning to become pregnant during the study.
Subject is currently enrolled in an investigational drug or device study.
Subject has received an investigational drug or been treated with an investigational device within 30 days prior to the study start.
Subject has the need or plans to be exposed to artificial tanning devices or excessive sunlight during the trial

Subject has used any of the following topical anti-acne preparations or procedures on the face:

Topical anti-acne treatments including but not limited to over-the-counter acne cleaners or treatments, benzoyl peroxide, antibiotics, azelaic acid, sulfa based products, corticosteroids and salicylic acid within two weeks of the initiation of treatment.
Retinoids, including tazarotene, adapalene, tretinoin, within four weeks of the initiation of treatment.
Light treatments, microdermabrasion or chemical peels within eight weeks of the initiation of treatment.

Subject has used the following systemic anti-acne medications:

Corticosteroids (including intramuscular and intralesional injections) within four weeks of the initiation of treatment. Inhaled, intranasal or ocular corticosteroids are allowed if use is stable (stable use is defined as dose and frequency unchanged for at least four weeks prior to the initiation of treatment).
Antibiotics within four weeks of the initiation of treatment with the exception of five days or less of antibiotic therapy during this period, but with no antibiotics use permitted within one week prior to the initiation of treatment.
Spironolactone within eight weeks of the initiation of treatment with the exception of five days or less of spironolactone therapy during this period, but with no spironolactone use permitted within one week prior to the initiation of treatment.
Retinoid therapy within six months of the initiation of treatment.

Summary

Low-dose Active, BID

Medium-dose Active, BID

High-dose Active, QD

High-dose Active, BID

Vehicle, QD or BID

All Events

Event Type Organ System Event Term Low-dose Active, BID Medium-dose Active, BID High-dose Active, QD High-dose Active, BID Vehicle, QD or BID

Investigator's Global Assessment (IGA) "Success" - Week 12

Count and percentage of subjects achieving success in each treatment group at Week 12 using the dichotomized IGA with success defined as a score of "clear" or "almost clear" (IGA Score of 0 or 1) and a two or more grade improvement from Baseline using a five-point scale (0=clear to 4=severe).

High-dose Active, QD

High-dose Active, BID

Vehicle, QD or BID

Low-dose Active, BID

Medium-dose Active, BID

Inflammatory and Non-Inflammatory Lesion Counts - Week 12

Absolute change from Baseline in inflammatory and non-inflammatory lesion counts in each treatment group at Week 12.

Low-dose Active, BID

Inflammatory lesions

-8.3
lesions (Mean)
Standard Deviation: 14.63

Non-inflammatory lesions

-8.7
lesions (Mean)
Standard Deviation: 18.16

Medium-dose Active, BID

Inflammatory lesions

-5.8
lesions (Mean)
Standard Deviation: 11.99

Non-inflammatory lesions

-6.1
lesions (Mean)
Standard Deviation: 29.22

High-dose Active, QD

Inflammatory lesions

-10.1
lesions (Mean)
Standard Deviation: 12.53

Non-inflammatory lesions

-8.4
lesions (Mean)
Standard Deviation: 21.55

High-dose Active, BID

Inflammatory lesions

-12.3
lesions (Mean)
Standard Deviation: 14.43

Non-inflammatory lesions

-15.5
lesions (Mean)
Standard Deviation: 20.48

Vehicle, QD or BID

Inflammatory lesions

-9.1
lesions (Mean)
Standard Deviation: 13.67

Non-inflammatory lesions

-6.7
lesions (Mean)
Standard Deviation: 19.65

Inflammatory and Non-Inflammatory Lesion Counts - Week 8

Absolute change from Baseline in inflammatory and non-inflammatory lesion counts in each treatment group at Week 8.

Low-dose Active, BID

Inflammatory lesions

-11.9
lesions (Mean)
Standard Deviation: 8.84

Non-inflammatory lesions

-7.0
lesions (Mean)
Standard Deviation: 13.76

Medium-dose Active, BID

Inflammatory lesions

-7.2
lesions (Mean)
Standard Deviation: 12.03

Non-inflammatory lesions

-6.7
lesions (Mean)
Standard Deviation: 16.33

High-dose Active, QD

Inflammatory lesions

-7.2
lesions (Mean)
Standard Deviation: 17.21

Non-inflammatory lesions

-3.2
lesions (Mean)
Standard Deviation: 37.01

High-dose Active, BID

Inflammatory lesions

-11.5
lesions (Mean)
Standard Deviation: 11.19

Non-inflammatory lesions

-13.6
lesions (Mean)
Standard Deviation: 17.99

Vehicle, QD or BID

Inflammatory lesions

-11.3
lesions (Mean)
Standard Deviation: 12.71

Non-inflammatory lesions

-8.3
lesions (Mean)
Standard Deviation: 17.12

Percent Change in Lesion Counts - Weeks 8 and 12

Percent change from Baseline in lesion counts (inflammatory and noninflammatory) in each treatment group at Weeks 8 and 12.

Low-dose Active, BID

Inflammatory lesions (Week 12)

-26.8
percentage of change (Mean)
Standard Deviation: 50.78

Inflammatory lesions (Week 8)

-40.6
percentage of change (Mean)
Standard Deviation: 28.20

Non-inflammatory lesions (Week 12)

-24.3
percentage of change (Mean)
Standard Deviation: 38.69

Non-inflammatory lesions (Week 8)

-18.3
percentage of change (Mean)
Standard Deviation: 34.50

Medium-dose Active, BID

Inflammatory lesions (Week 12)

-21.3
percentage of change (Mean)
Standard Deviation: 45.33

Inflammatory lesions (Week 8)

-26.6
percentage of change (Mean)
Standard Deviation: 37.35

Non-inflammatory lesions (Week 12)

-16.9
percentage of change (Mean)
Standard Deviation: 55.66

Non-inflammatory lesions (Week 8)

-19.5
percentage of change (Mean)
Standard Deviation: 36.49

High-dose Active, QD

Inflammatory lesions (Week 12)

-32.5
percentage of change (Mean)
Standard Deviation: 35.51

Inflammatory lesions (Week 8)

-27.5
percentage of change (Mean)
Standard Deviation: 41.44

Non-inflammatory lesions (Week 12)

-19.5
percentage of change (Mean)
Standard Deviation: 40.75

Non-inflammatory lesions (Week 8)

-10.5
percentage of change (Mean)
Standard Deviation: 57.13

High-dose Active, BID

Inflammatory lesions (Week 12)

-41.8
percentage of change (Mean)
Standard Deviation: 52.25

Inflammatory lesions (Week 8)

-41.1
percentage of change (Mean)
Standard Deviation: 36.54

Non-inflammatory lesions (Week 12)

-34.1
percentage of change (Mean)
Standard Deviation: 46.95

Non-inflammatory lesions (Week 8)

-33.5
percentage of change (Mean)
Standard Deviation: 39.26

Vehicle, QD or BID

Inflammatory lesions (Week 12)

-28.4
percentage of change (Mean)
Standard Deviation: 41.88

Inflammatory lesions (Week 8)

-36.0
percentage of change (Mean)
Standard Deviation: 35.01

Non-inflammatory lesions (Week 12)

-19.5
percentage of change (Mean)
Standard Deviation: 47.43

Non-inflammatory lesions (Week 8)

-24.3
percentage of change (Mean)
Standard Deviation: 43.23

IGA "Success" - Week 8

Count and percentage of subjects achieving success per the IGA in each treatment group at Week 8 ("success" as defined in the primary endpoints section).

Low-dose Active, BID

Medium-dose Active, BID

High-dose Active, QD

High-dose Active, BID

Vehicle, QD or BID

IGA "Clear" or "Almost Clear" - Weeks 4, 8 and 12

Count and percentage of subjects who are "clear" or "almost clear" (IGA Grade 0 or 1) in each treatment group at Weeks 4, 8 and 12.

Low-dose Active, BID

Week 12

Week 4

Week 8

Medium-dose Active, BID

Week 12

Week 4

Week 8

High-dose Active, QD

Week 12

Week 4

Week 8

High-dose Active, BID

Week 12

Week 4

Week 8

Vehicle, QD or BID

Week 12

Week 4

Week 8

Total

363
Participants

Age, Continuous

19.7
years (Mean)
Standard Deviation: 5.99

Baseline IGA

Baseline lesions counts

Baseline lesions counts

Ethnicity (NIH/OMB)

Race (NIH/OMB)

Sex: Female, Male

Overall Study

Low-dose Active, BID

Medium-dose Active, BID

High-dose Active, QD

High-dose Active, BID

Vehicle, QD or BID

Drop/Withdrawal Reasons

Low-dose Active, BID

Medium-dose Active, BID

High-dose Active, QD

High-dose Active, BID

Vehicle, QD or BID