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Abstract
Objectives: This study was designed to compare the safety and efficacy of two cycled dosing regimens of imiquimod 5% cream for treatment of superficial basal cell carcinoma (sBCC). Methods: Patients (n = 32) were randomized to receive one of two treatment regimens: 8 weeks of treatment with once‐daily dosing for alternate weeks (R1) and 5 weeks of once‐daily dosing with a 1‐week interval in the middle of the course (R2). Efficacy measures were tumour clearance at weeks 19 and 52 and measures of patients' acceptability. Results: Data from 30 patients (13 females), 14 on R1 and 16 on R2, were analysed. The results revealed an initial clearance rate of 64% at week 19 for R1and 81% for R2 (95% CI for difference: −14% to 45%, p = 0.21). However, clearance rates at week 52 were significantly different: 43% for R1 and 88% for R2 (95% CI for difference: 11% to 68%, p = 0.02). There was no difference in acceptability of treatment as measured by composite median visual analogue scores at week 8. Conclusion: Five weeks of 5% imiquimod cream once daily with a 1‐week interval was more effective but as well tolerated as the 8‐week alternate week regimen for sBCC.