Efficacy and Safety of LEO 43204 in the Field Treatment of Actinic Keratosis on Face or Chest including12-month Follow-up

Phase 3

Completed

Brief Summary: The objective of the trial is to compare the short term efficacy of LEO 43204 gel with vehicle gel in AK on face or chest when applied topically once daily for 3 consecutive days as field treatment

Recruitment & Eligibility

Inclusion Criteria

Subjects with 5 to 20 clinically typical, visible and discrete AKs within a treatment area of sun-damaged skin on either the full face or a contiguous area of approximately 250 cm2 (40 in2) on the chest
Subjects with minimum 3 clinically typical, visible and discrete AKs within a tracking area of 50 cm2 (8 in2). The tracking area must be within the treatment area

Exclusion Criteria

Location of the treatment area (full face or chest) within 5 cm of an incompletely healed wound or within 5 cm of a suspected BCC or SCC
Treatment with ingenol mebutate gel in the treatment area within the last 12 months
Lesions in the treatment area that have: atypical clinical appearance (e.g. hyperthrophic, hyperkeratotic or cutaneous horns) and /or, recalcitrant disease (e.g. did not respond to cryotherapy on two previous occasions)
History or evidence of skin conditions other than the trial indication that would interfere with the evaluation of the trial medication (e.g., eczema, unstable psoriasis, xeroderma pigmentosum)

Arm && Interventions

Group	Intervention	Description
LEO 43204 gel	LEO 43204 gel	Treatment once daily for 3 days
Vehicle gel	Vehicle gel	Treatment once daily for 3 days

Primary Outcome Measures

Name	Time	Method
Complete Clearance of Actinic Keratosis (AK)	At Week 8	The number of clinically visible actinic keratosis lesions (AKs) identified in the treatment area was recorded at Day 1, Week 4, and Week 8. Complete clearance was defined as no clinically visible AKs in the treatment area. The table shows the percentage of mean number of subjects across imputations with complete clearance.

Secondary Outcome Measures

Name	Time	Method
Percentage of Participants With Partial Clearance (Multiple Imputation)	At Week 4	The number of clinically visible AKs identified in the treatment area was recorded at Day 1, Week 4, and Week 8. Partial clearance was defined as at least 75% reduction from baseline in the number of clinically visible AKs in the treatment area. The table shows the percentage of mean number of participants across imputations with partial clearance.
Percent Reduction in AK Count in the Treatment Area Compared to Baseline	At Week 8	The percent reduction at Week 8 from baseline was analysed using a negative binomial regression for the AK count at Week 8 with treatment group and pooled sites as factors and baseline count as offset variable (using multiple imputations to account for missing values). The table presents adjusted mean percent reduction at Week 8 from baseline.