Efficacy and safety of topical SR-T100 gel in treating actinic keratosis in Taiwan: A Phase III randomized double-blind vehicle-controlled parallel trial

Chao Chun Yang, Tak Wah Wong, Chih Hung Lee, Chien Hui Hong, Chung Hsing Chang, Feng Jie Lai, Shang Hung Lin, Ching Chi Chi, Tzu Kai Lin, Hsi Yen, Chin Han Wu, Hamm Ming Sheu, Cheng Che E. Lan

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5 Citations (Scopus)

Abstract

Background: Currently available topical treatments for actinic keratosis (AK) are associated with substantial side-effects. Objectives: To evaluate the efficacy and safety of topical SR-T100 gel in treating AK. Methods: A multicenter, randomized, double-blinded phase III trial was conducted. Patients with at least two clinically visible AK were enrolled and a punch biopsy was performed on one of the AK to confirm the diagnosis. This study consisted of up to 16-week treatment and 8-week post-treatment periods. Medication was applied daily with occlusive dressing. Results: 123 subjects were recruited and 113 were randomized. 76 subjects were in the SR-T100 and 37 in the vehicle arms. In SR-T100 and vehicle groups, 32.39% and 17.14% of subjects achieved complete clearance, respectively. For 75% partial clearance of lesions, 71.83% and 37.1% of subjects achieved this goal in SR-T100 and vehicle group, respectively. When comparing SR-T100 to vehicle, the odds ratio of complete clearance was 2.14 (p = 0.111), and odds ratio of partial clearance was 4.36 (p < 0.001). Severe local reactions were reported by only one subject using SR-T100. Conclusion: The imitation of the study was that not all the treated AK lesions were confirmed by histopathology. The diagnostic uncertainty may contribute to the high partial clearance rate in the vehicle group since the clinical-diagnosed AK showed higher clearance rate compared to histopathology-confirmed AK. The use of occlusive dressing was another possible explanation for high placebo effects. The results suggested that topical SR-T100 gel may be an effective and safe treatment for field therapy of AK.

Original languageEnglish
Pages (from-to)295-302
Number of pages8
JournalJournal of Dermatological Science
Volume90
Issue number3
DOIs
Publication statusPublished - 2018 Jun

All Science Journal Classification (ASJC) codes

  • Biochemistry
  • Molecular Biology
  • Dermatology

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