Comparison of the Efficacy and Safety of Clindamycin + Benzoyl Peroxide Formulation With Azelaic Acid Formulation in the Treatment of Acne Vulgaris

A count of IL (papules and pustules, including nasal lesions), NIL (open and closed comedones) and total lesions was performed at baseline and up to Week 12. Lesion counts were confined to the face. Baseline was defined at Visit 1 (Day 1). Change from Baseline in the number of IL was defined as week 12 values minus the Baseline values.

A count of IL (papules and pustules, including nasal lesions),NIL (open and closed comedones) and total lesions was performed at baseline and up to Week 12. Lesion counts were confined to the face. Baseline was defined at Visit 1 (Day 1). Change from Baseline in the number of IL was defined as week 12 values minus the Baseline values.

The average time to 50 percent reduction of the calculated total lesion count was analyzed by determination of the number of days between Baseline and the first visit with a 50 percent reduction of the count.

ISGA was conducted at all study visits. The area considered for the ISGA was confined to the face. A 0-5 point rating scale was used: 0 means Clear- Clear skin with no IL or NIL, 1 means Almost Clear- Rare NIL with no more than one small IL, 2 means Mild- Some NIL with no more than a few IL (papules/pustules only, no nodular lesions), 3 means Moderate- Up to many NIL and may have some IL, but no more than one small nodular lesion, 4 means Severe- Up to many NIL and IL, but no more than a few nodular lesions and 5 means Very Severe- Many NIL and IL and more than a few nodular lesions, may have cystic lesions.

Tolerability was assessed by investigator on a 0-3 point rating scale for erythema (0- None, 1- Slight, 2- Some and 3- Very red), dryness (0- None, 1- Slight, 2- Some and 3- Very dry) and peeling (0- None, 1- Slight, 2- Moderate and 3- Strong). A shift table was provided to deduce how the results are varying from the baseline visit to post-baseline visits. Change from Baseline is the value at indicated time point minus the Baseline value.

An SGCA was conducted by the participant to assess the efficacy of treatment on Week 2, 4, 8 and 12 as Very Much Improved, Much Improved, Minimally Improved, No Change, Minimally Worse, Much Worse, Very Much Worse and missing.

Tolerability was assessed by the participants based on a 0-3 point rating scale for stinging/burning (S/B) and pruritus of the face (0- None, 1- Slight, 2- Moderate and 3- Strong). A shift table was provided to deduce how the results are varying from the Baseline visit to post-baseline visits.

The product acceptability and preference questionnaire (PAP-Q ) served as a patient satisfaction score and was performed only once at the final study visit (ie, after 12 weeks (V5) or earlier in case of premature termination). Severity of each facial acne sign and symptom (scaling, redness, dryness, burning, itching) was based on a 0-5 point rating scale (0- None, 1- Very minimal, 2- Mild, 3- Moderate, 4- Severe, 5- Very severe).

The general assessment of 'overall satisfaction' with study therapy was assessed at week 12 on a 0-4 point rating scale (0-Very satisfied, 1- Satisfied, 2- Neutral, 3- Unsatisfied and 4- Very unsatisfied).

This outcome measure was a measure of quality of life (QOL). The DLQI was used to assess the quality of life at each visit. Participants completed the questionnaire to evaluate how their acne has affected their life. The DLQI is a 10 item questionnaire, which addresses feelings, daily activities, leisure, work, school, personal relationships, and treatment. Each question was scored out of 0-3, as follows: 0- Not at all, 1- A little, 2- A lot, 3- very much, indicating 0 as the least and 3 as the best quality Index. The sub-scale scores of 10 questions were combined and a composite score was presented. The total score ranged from 0 to 30, 0 indicated the least and highest score indicated the best quality Index. The DLQI was for participants with 17 to 45 years of age. Baseline was defined at Visit 1 (Day 1). Change from Baseline is the value at indicated time point minus the Baseline value.

This outcome measure was a measure of QOL. The CDLQI was used to assess the quality of life at each visit. Participants completed the questionnaire to evaluate how their acne has affected their life. The DLQI is a 10 item questionnaire, which addresses feelings, daily activities, leisure, work, school, personal relationships, and treatment. Each question was scored out of 0-3, as follows: 0- Not at all, 1- A little, 2- A lot, 3- very much, indicating 0 as the least and 3 as the best quality Index. The sub-scale scores of 10 questions were combined and a composite score was presented. The total score ranged from 0 to 30, 0 indicated the least and highest score indicated the best quality Index. The CDLQI was for participants with 12 to 16 years of age. Baseline was defined at Visit 1 (Day 1). Change from Baseline is the value at indicated time point minus the Baseline value.

Adverse events are defined as any untoward medical occurrence in a participant or clinical investigation participant, temporally associated with the use of a medicinal product, whether or not considered related to the medicinal product. Serious adverse events are defined as any untoward medical occurrence that results in death, is life threatening, requires hospitalization or prolongation of existing hospitalization, results in disability/incapacity, congenital anomaly/birth defect and medically significant. TEAEs and TESAEs were reported up to 12 weeks.