PMID- 29024025 OWN - NLM STAT- MEDLINE DCOM- 20181016 LR - 20181016 IS - 1468-3083 (Electronic) IS - 0926-9959 (Linking) VI - 32 IP - 5 DP - 2018 May TI - An exploratory, prospective, open-label trial of ingenol mebutate gel 0.05% for the treatment of external anogenital warts. PG - 825-831 LID - 10.1111/jdv.14625 [doi] AB - BACKGROUND: Anogenital warts (AGW) can cause physical discomfort and decreased quality of life. Recent case reports suggest that ingenol mebutate gel might be an effective treatment of AGW. OBJECTIVE: To explore primarily the safety, and secondarily the efficacy of ingenol mebutate gel 0.05% in patients with AGW. METHODS: This was an exploratory, open-label, 1-arm trial of ingenol mebutate gel 0.05% administered up to three times to patients with AGW. Safety was assessed by occurrence and severity of local skin reactions (LSRs) and treatment-related adverse events (AEs). Efficacy was assessed by complete clearance and reduction in AGW count 14 days after last treatment, and recurrence 12 weeks after clearance. RESULTS: Of 41 patients enrolled, 40 received treatment and 26 completed the trial. Patients had a median AGW count of 11.0 and AGW duration of 3.0 years at baseline. All patients experienced transient LSRs following treatment with a maximum composite LSR score of 7.5 (on a scale from 0 to 18). A total of 93% of patients reported treatment-related AEs, most frequently pain (85%) and procedural complications (35%) due to smearing of the gel. 78% of patients took mild analgesics for the pain, typically for 1-2 days following treatment. The majority of AEs were of moderate-to-severe intensity. Seventeen of 39 patients (43.6%) had complete clearance 14 days after last treatment, and AGW count was reduced by 90.9%. There was a tendency towards lower clearance rate in patients with longer duration of AGW. Eight of 14 patients (57.1%) had AGW recurrence 12 weeks after clearance. CONCLUSION: Ingenol mebutate gel was associated with a high number of AEs and withdrawals due to painful local and adjacent skin reactions. Furthermore, it showed promising efficacy in reducing AGW despite a difficult-to-treat population. Optimization of the formulation is warranted to improve the safety profile of the treatment. CI - (c) 2017 European Academy of Dermatology and Venereology. FAU - Larsen, H K AU - Larsen HK AD - Department of Dermato-Venereology, University Hospital of Copenhagen, Bispebjerg Hospital, Copenhagen, Denmark. FAU - Banzhaf, C A AU - Banzhaf CA AD - Department of Dermato-Venereology, University Hospital of Copenhagen, Bispebjerg Hospital, Copenhagen, Denmark. FAU - Thomsen, S F AU - Thomsen SF AD - Department of Dermato-Venereology, University Hospital of Copenhagen, Bispebjerg Hospital, Copenhagen, Denmark. AD - Department of Biomedical Sciences, University of Copenhagen, Copenhagen, Denmark. FAU - Gormsen, M AU - Gormsen M AD - LEO Pharma A/S, Ballerup, Denmark. FAU - Schopf, R E AU - Schopf RE AD - Department of Dermatology, Johannes Gutenberg University, Mainz, Germany. FAU - Haedersdal, M AU - Haedersdal M AD - Department of Dermato-Venereology, University Hospital of Copenhagen, Bispebjerg Hospital, Copenhagen, Denmark. LA - eng PT - Journal Article DEP - 20180123 PL - England TA - J Eur Acad Dermatol Venereol JT - Journal of the European Academy of Dermatology and Venereology : JEADV JID - 9216037 RN - 0 (3-ingenyl angelate) RN - 0 (Antineoplastic Agents) RN - 0 (Diterpenes) RN - 0 (Gels) SB - IM MH - Adult MH - Aged MH - Antineoplastic Agents/*adverse effects/therapeutic use MH - Anus Diseases/*drug therapy MH - Blister/chemically induced MH - Condylomata Acuminata/*drug therapy MH - Diterpenes/*adverse effects/therapeutic use MH - Edema/chemically induced MH - Erythema/chemically induced MH - Female MH - Gels MH - Genital Diseases, Female/*drug therapy MH - Genital Diseases, Male/*drug therapy MH - Humans MH - Male MH - Middle Aged MH - Pain/chemically induced MH - Prospective Studies MH - Recurrence MH - Skin Ulcer/chemically induced MH - Treatment Outcome MH - Young Adult EDAT- 2017/10/13 06:00 MHDA- 2018/10/17 06:00 CRDT- 2017/10/13 06:00 PHST- 2017/06/12 00:00 [received] PHST- 2017/09/20 00:00 [accepted] PHST- 2017/10/13 06:00 [pubmed] PHST- 2018/10/17 06:00 [medline] PHST- 2017/10/13 06:00 [entrez] AID - 10.1111/jdv.14625 [doi] PST - ppublish SO - J Eur Acad Dermatol Venereol. 2018 May;32(5):825-831. doi: 10.1111/jdv.14625. Epub 2018 Jan 23.