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Effectiveness and safety of doxycycline 40 mg (30-mg immediate-release and 10-mg delayed-release beads) once daily as add-on therapy to existing topical regimens for the treatment of papulopustular rosacea: results from a community-based trial.

Cutis. 2010 Nov;86(5 Suppl):16-25

Authors: Del Rosso JQ

Rosacea is a prevalent inflammatory skin disorder that affects approximately 16 million individuals in the United States. Although its exact etiology is unknown, basic science, histologic evidence, and clinical evidence suggest that it is inflammatory in nature. In this 12-week, open-label, multicenter, community-based, phase 4 trial, we evaluated the anti-inflammatory effects of once daily subantimicrobial-dose doxycycline 40 mg (30-mg immediate-release and 10-mg delayed-release beads) in participants with papulopustular rosacea (PPR) who were receiving topical therapy (metronidazole, azelaic acid, and/ or sodium sulfacetamide-sulfur) at the time of the study entry but whose rosacea symptoms were still present. The primary outcome measure was the change in the investigator global assessment (IGA) score from baseline to end of study (week 12). Secondary outcome measures were changes from baseline to end of study in the clinician erythema assessment (CEA) score, treatment responders (IGA score of clear, near clear), and safety. After week 12, 75.7% of participants in the per-protocol (PP) population had IGA scores of clear or near clear. In addition, there were significant differences in the distribution of baseline and week 12 IGA scores in the PP group (P = .0012). At week 12, most participants (63.6%) had mild CEA scores; the distribution was significantly different from baseline (P = .0407). Only 7% of participants had treatment-related adverse events (AEs), mostly mild or moderate in severity. Thus the 40-mg formulation of doxycycline proved to be effective and well-tolerated in a real-world setting in participants with rosacea who were receiving topical therapy but still experiencing symptoms.

PMID: 21229827 [PubMed - in process]

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