A pilot study to investigate the treatment of anogenital warts with Topical Lithium Succinate cream (8% lithium succinate, 0.05% zinc sulphate).
The incidence of anogenital warts (condyloma acuminatum) is rapidly increasing while there is still no totally satisfactory treatment available. In light of the emphasis of experimental approaches toward the prevention of viral replication and evidence of the antiviral action of lithium salts it was proposed to investigate the efficacy of Topical Lithium Succinate cream (LSC) in the treatment of anogenital warts. A total of 101 patients (42 women, 59 men) were randomized to receive either active or placebo treatment for a period of 4 weeks. Assessment of the number, location, size and area of coverage of the warts was made by the clinician at baseline, weeks 2, 4, 6 and 12. Compliance to the study protocol following cessation of treatment at week 4 was extremely poor. The high drop-out rate after this was felt to invalidate data collected after that point. It was therefore decided that the analysis should concentrate on the treatment period. Of 101 patients entering the trial 51 received active (30 male and 21 female) and 50 received placebo (29 male, 21 female). The primary efficacy variable was percentage change from baseline in the overall coverage of lesions. Over all patients LSC treatment resulted in a reduction of 42% (P<0.02) in the overall coverage of lesions. Separate analyses for male and female patients showed that for males there was a highly significant reduction in the coverage of lesions of 65% (P<0.02). However for females the reduction of 11% was not significant. A possible explanation for this difference between the sexes is that as many of the lesions in the female patients were internal therefore this could lead to difficulty in both application of the cream, and subsequent lesion assessment.
Ward
K A
KA
Department of Genito-Urinary Medicine, Royal Victoria Hospital, Belfast, UK.
Armstrong
K D
KD
Maw
R D
RD
Winther
M D
MD
Gilburt
S J
SJ
Dinsmore
W W
WW
D000287:Administration, Topical; D000328:Adult; D003218:Condylomata Acuminata / Q000188:drug therapy*; D004338:Drug Combinations; D005260:Female; D006801:Humans; D008094:Lithium / Q000627:therapeutic use*; D008297:Male; D008875:Middle Aged; D009824:Ointments; D009942:Organometallic Compounds / Q000627:therapeutic use*; D010865:Pilot Projects; D013386:Succinates / Q000627:therapeutic use*; D016896:Treatment Outcome; D019287:Zinc Sulfate / Q000627:therapeutic use*
D004338:Drug Combinations; D009824:Ointments; D009942:Organometallic Compounds; D013386:Succinates; D019287:Zinc Sulfate; D008094:Lithium; C038377:lithium succinate