Sinecatechins, a defined green tea extract, in the treatment of external anogenital warts: a randomized controlled trial.
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 mm(2) 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.


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


BACKGROUND
ClinicalTrials.gov, www.clinicaltrials.gov, NCT00449982.


METHODS
I.
Tatti
Silvio
S
Hospital de Kennedy, Bogota, Colombia. siltatti@fibertel.com.ar
Swinehart
James M
JM
Thielert
Claus
C
Tawfik
Hoda
H
Mescheder
Axel
A
Beutner
Karl R
KR
D000293:Adolescent; D000328:Adult; D000368:Aged; D001004:Anus Diseases / Q000188:drug therapy*; D002392:Catechin / Q000008:administration & dosage / Q000627:therapeutic use*; D003218:Condylomata Acuminata / Q000188:drug therapy*; D004311:Double-Blind Method; D005260:Female; D005831:Genital Diseases, Female / Q000188:drug therapy*; D005832:Genital Diseases, Male / Q000188:drug therapy*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009824:Ointments; D010936:Plant Extracts / Q000008:administration & dosage / Q000627:therapeutic use; D012008:Recurrence; D013662:Tea; D016896:Treatment Outcome
D009824:Ointments; D010936:Plant Extracts; D013662:Tea; D002392:Catechin