Tazarotene 0.045% Lotion for Moderate-to-Severe Acne Patients: Pooled Phase 3 Analysis by Age and Sex.

Background Two identical phase 3 trials (NCT03168321 and NCT03168334) and pooled post hoc analyses have established efficacy and safety of a polymeric tazarotene 0.045% lotion formulation in patients with moderate-to-severe acne. Presented here are post hoc analyses that further examine efficacy and safety of tazarotene 0.045% lotion by age and sex. Methods Patients aged g9 years with moderate-to-severe acne (score 3 or 4 on the Evaluator's Global Severity Score [EGSS]) were equally randomized to once-daily tazarotene 0.045% lotion or vehicle lotion for 12 weeks. Efficacy outcomes included inflammatory/noninflammatory lesion counts and treatment success (proportion of participants achieving g2-grade reduction from baseline in EGSS and score of 0 [clear] or 1 [almost clear]). Adolescent and adult females (n=1,013) and males (n=529) were subdivided into 3 age groups: 13n19, 20n29, and g30 years. Results At week 12, large least-squares mean percent reductions in inflammatory and noninflammatory lesions were observed across all 3 tazarotene-treated age groups in males and females (range, -50.2% to -64.8%). Treatment success rates ranged from 23.6% to 38.4%. Across all efficacy assessments, significant differences between tazarotene and vehicle (Pl0.05) were generally observed in the younger male and female participants (13n19 and 20n29). No notable age-related patterns were found for safety outcomes, though tazarotene-treated males of all age groups reported fewer adverse events than females. Conclusions Tazarotene 0.045% lotion is efficacious and well tolerated in female and male adolescents and adults with moderate-to-severe acne. J Drugs Dermatol. 2021;20(6):608-615. doi:10.36849/JDD.6070.