Randomized, multi-center, double-blind, placebo-controlled 12-week study to assess the safety and efficacy of 3 doses of an oral formulation of Doxycycline oral tablets using the Investigator's Global Assessment (IGA) score and the absolute change from baseline in inflammatory lesion count in patients with moderate to severe facial acne vulgaris. Additionally, the absolute change from baseline in non-inflammatory and total lesions of the active study medication to placebo will be evaluated.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
QUADRUPLE
Enrollment
257
doxycycline 40 mg/day, oral, 12 weeks
doxycycline 80 mg/day, 12 weeks
doxycycline 160 mg/day, 12 weeks
Warner Chilcott Investigational Site
Encino, California, United States
Percentage Patients With Successful Outcome Investigator's Global Assessment (IGA) Score at Week 12, Intent to Treat (ITT) Population
IGA: 0/clear (clear skin no lesions, inflammatory or non-inflammatory), 1/almost clear (rare non-inflammatory lesion w/no more than 1 small inflammatory lesion), 2/mild (some non-inflammatory lesions with no more than a few inflammatory lesions, papules/pustules only, no nodular lesions), 3/moderate (up to many non-inflammatory lesions, some inflammatory lesions, no more than 1 small nodular lesion), 4/severe (many non-inflammatory \& inflammatory lesions, no more than a few nodular lesions. Lower score improvement in score. Success=IGA decrease of at least 2 grades from baseline score.
Time frame: Week 12
Absolute Change in Inflammatory Lesion Count From Baseline to Week 12, ITT Population
Change derived as Baseline evaluation minus the Week 12 evaluation. Thus a positive change reflects a reduction in lesion count. Inflammatory Lesion Count includes nodules, papules and pustules.
Time frame: Baseline to Week 12
Absolute Change From Baseline to Week 12 in NonInflammatory Lesion Count, ITT Population
Noninflammatory Lesion Count includes open and closed comedones.
Time frame: Baseline to Week 12
Absolute Change From Baseline to Week 12 in Total Lesion Count, ITT Population
Total Lesion Count is the sum of inflammatory and noninflammatory lesions.
Time frame: Baseline to Week 12
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Placebo, 12 weeks
Warner Chilcott Investigational Site
Fremont, California, United States
Warner Chilcott Investigational Site
Los Angeles, California, United States
Warner Chilcott Investigational Site
Sacramento, California, United States
Warner Chilcott Investigational Site
Denver, Colorado, United States
Warner Chilcott Investigational Site
Miami, Florida, United States
Warner Chilcott Investigational Site
Newnan, Georgia, United States
Warner Chilcott Investigational Site
Snellville, Georgia, United States
Warner Chilcott Investigational Site
Louisville, Kentucky, United States
Warner Chilcott Investigational Site
Clinton Township, Michigan, United States
...and 13 more locations