A multi-centre randomised controled single blind clinical phase IV trial with the aim to determine the most effective treatment in terms of lesion reduction, costs and patient satisfaction in treatment of actinic keratosis (AK), when comparing topical treatment with photodynamic therapy (PDT), 5% 5-fluorouracil (5-FU) cream, 5% Imiquimod (IMI) cream and ingenol mebutate (IM) gel.
Skin cancer is the most common cancer in Caucasians and therefore a major public health issue. Its incidence is increasing rapidly. Actinic keratosis (AK) is the most prevalent precancerous chronic skin condition. It can transform into squamous cell carcinoma (SCC). AK's generally arise in a skin area that has diffuse precancerous damage, a phenomenon called field cancerization. Because of its precancerous character, it is advised to treat AK and herewith prevent development into SCC. The most frequently used field-directed treatments in the Netherlands are photodynamic therapy (PDT), topical 5% f-fluorouracil (5% 5-FU) and topical 5% Imiquimod (5% IMI). Lately another topical product is approved by Dutch healthcare insurances: Ingenol mebutate (IM). Up to date, which treatment the patient will receive, does not rely on evidence-based-medicine, but generally on the preference of the physician. Current national and international guidelines state no clear recommendations for the best choice of therapy. The aim of this study determine which treatment is the most effective treatment in terms of lesion reduction, costs and patient satisfaction when comparing topical treatment with photodynamic therapy (PDT), 5% 5-fluorouracil (5-FU) cream, 5% Imiquimod (IMI) cream and ingenol mebutate (IM) gel, in treatment of actinic keratosis (AK).
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
SINGLE
Enrollment
624
three times a week once daily during 4 consecutive weeks. Prior to treatment: curettage
during 4 (consecutive) weeks twice daily. Prior to treatment: curettage
during 3 (consecutive) days once daily. Prior to treatment: curettage
Maastricht UMC
Maastricht, Limburg, Netherlands
treatment succes
the proportion of patients with ≥75% lesion reduction in the number of AK lesions counted at baseline in the treatment area 12 months post final treatment (≥ 75% patient clearance at 12 months).
Time frame: 12 months
treatment failure
proportion of participants with \<75% reduction in number of AK lesions after 3 and 12 months post final treatment compared to baseline (\<75% patient clearance at 3 and 12 months).
Time frame: 12 months
Treatment succes at 3 months post treatment
proportion of participants with ≥75% reduction in number of AK lesions at 3 months post final treatment (≥ 75% patient clearance at 3 months).
Time frame: 3 months
complete lesion clearance
proportion of lesions with 100% clearance in all treated patients at 3 and 12 months post final treatment.
Time frame: 12 months
SCC
Proportion of patients who develop a SCC in the treatment area during study follow-up.
Time frame: 12 months
side effects
local skin reactions reported in patient diary, visual analogue score (VAS), Patient-reported adverse events
Time frame: 12 months
Cosmetic outcome
based on a Cosmetic questionnaire, filled in on baseline, 3 + 12 months
Time frame: 3 and 12 months
patient satisfaction
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methylaminolevulinate photodynamic therapy; one session. Prior to treatment: curettage
Skindex-29 questionnaire (quality of life) , Actinic Keratosis Quality of Life (AKQoL) questionnaire; filled in on baseline, 3 + 12 months
Time frame: 12 months
treatment compliance
defined as the number of applied treatments as percentage of the number of prescribed treatments, based on patient diaries and weighing returned medication.
Time frame: 3 months
Overall decrease in AK
Decrease in number AK from baseline per patient, at 3 and 12 months post final treatment.
Time frame: 3 and 12 months
Cost-effectiveness
Healthcare/treatment costs
Time frame: 12 months
Investigator Global Improvement Indices
Investigator Global Improvement Indices (IGII) at 3 and 12 months post final treatment.
Time frame: 3 and 12 months
Number of new lesions
Number of new lesions at 3 and 12 months post final treatment
Time frame: 3 and 12 months