Purpose: Actinic keratoses (AKs) may progress to squamous cell carcinoma and can occur in cancerized fields as sub-clinical and clinically visible lesions. Ingenol disoxate gel is a topical field therapy for AK. This Phase I/II trial aimed to assess the safety and efficacy of ingenol disoxate on full face or chest in patients with AKs.

Materials And Methods: Part 1 was a phase-I, open-label, dose-escalation trial investigating the maximum tolerated dose of ingenol disoxate. Part 2 was a phase-II, randomized, double-blind, vehicle-controlled trial; patients were randomized 1:1:1:1 to ingenol disoxate 0.018%, 0.012%, 0.006% gel or vehicle for 2 consecutive days.

Results: Reduction in AK count from baseline at Week 8 was significantly higher than with vehicle for all doses of ingenol disoxate gel (0.018%, 79.0%; 0.012%, 73.4%; 0.006%, 69.7%; vehicle; 42.3%; p < .001). Local skin responses peaked at Day 3 for all doses, rapidly declined, and reached mild levels at Week 2. Most adverse events were mild or moderate in intensity, and were most commonly application site pain/pruritus.

Conclusions: Ingenol disoxate gel is efficacious and well tolerated as field treatment for AKs on the full face or chest. Clinical Trial No.: NCT01922050.

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Source
http://dx.doi.org/10.1080/09546634.2017.1303568DOI Listing

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