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Sinecatechins, a Defined Green Tea Extract, in the Treatment of External Anogenital Warts

A Randomized Controlled Trial

From the ¹Hospital de Kennedy, Bogota, Colombia; ²MediGene AG, Munich, Germany; and ³Solano Clinical Research, Vallejo, California (now Anacor Pharmaceuticals, Palo Alto, California) and Department of Dermatology, University of California San Francisco, San Francisco, California.

OBJECTIVE: To estimate the clinical efficacy of topical sinecatechins, a defined green tea extract, in the treatment of external genital and perianal warts.

METHODS: This was a randomized, double-blind, vehicle-controlled trial involving 502 male and female patients aged 18 years and older, with 2–30 anogenital warts ranging from 12 to 600 mm² total wart area. Patients applied sinecatechins ointment 15% or 10% or vehicle (placebo) three times daily for a maximum of 16 weeks or until complete clearance of all warts, followed by a 12-week treatment-free follow-up to assess recurrence.

RESULTS: Complete clearance of all baseline and newly occurring warts was obtained in 57.2% and 56.3% of patients treated with sinecatechins ointment 15% and 10%, respectively, compared with 33.7% for vehicle (both P<.001). Significance was observed at weeks 4 and 6 and all subsequent visits. Numbers needed to treat were 4.3 and 4.4. Partial clearance rates of at least 50% were reported for 78.4% and 74.0% of patients in the sinecatechins ointment 15% and 10% groups compared with 51.5% of vehicle patients. During follow-up, recurrence of any wart was observed in 6.5%, 8.3%, and 8.8% in the sinecatechins ointment 15% group, sinecatechins ointment 10% group, and vehicle patients, respectively. A total of 3.7%, 8.3%, and 0.0% developed new warts, respectively. A total of 87.7% and 87.3% of patients in the sinecatechins ointment 15% and 10% groups, and 72.1% of vehicle patients experienced application site reactions; 49.2%, 46.2%, and 65.4% of those, respectively, were mild or moderate.

CONCLUSION: Topical sinecatechins ointments 15% and 10% are effective and well-tolerated in the treatment of anogenital warts.

CLINICAL TRIAL REGISTRATION: ClinicalTrials.gov, www.clinicaltrials.gov, NCT00449982

LEVEL OF EVIDENCE: I

This article has been cited by other articles:

				Tea for Warts? Journal Watch Women's Health, July 3, 2008; 2008(703): 2 - 2. [Full Text]

				Green Tea Extract Is Useful for Local Treatment of Anogenital Warts Journal Watch (General), June 17, 2008; 2008(617): 5 - 5. [Full Text]