title: Efficacy of a film-forming medical device containing sunscreen (50+) and piroxicam 0.8% in actinic keratosis and field cancerization: a multicenter, assessor-blinded, 3 month trial.
abstract: Sunscreen protection in subjects with actinic keratosis (AK) is highly recommended to prevent clinical evolution of this in situ skin cancer condition. Use of topical anti-cyclooxygenase drugs such as diclofenac and piroxicam reduces the number of lesions and improves the cancerization field. A film-forming medical device in a cream formulation containing organic and inorganic sun-filters (50+ SPF) and piroxicam 0.8% (ACTX) has shown in a pilot, single-center, open trial to reduce AK lesions improving the cancerization field.
  
  
  
  We evaluated in a multicenter, assessor-blinded, 3 month trial the efficacy of ACTX in AK.
  
  
  
  A total of 70 subjects with at least three AK lesions on the scalp or face were enrolled after written informed consent. Primary outcomes of the study were the clinical evolution of number of AK lesions on a target zone area and the evolution of dermoscopy features of the target lesion, assessing erythema, scaling, pigmentation, and follicular plug, using a 5 point score (from 0 to 4; maximum score: 16). Lesion count and dermoscopy score were evaluated in a blind fashion assessing digital color high definition coded images. A secondary outcome was the Investigator Global Score (IGS) of clinical evolution of the target area using a 7 point scale from -2 (significantly worse) to +4 (completely cured). IGS was evaluated in an open fashion. Subjects were instructed to apply the cream twice daily on the target area, using one finger-tip unit for the treatment of a 35 cm2area.
  
  
  
  All but one subject (40 men and 30 women, mean age 73 years) concluded the study period. At baseline the mean (±SD) number of AK lesions in the target area were 7.0 (5.9) with a median value of 5 and the dermoscopy score of the target lesion was 7.0 (2.3) with a median value of 7.0. ACTX treatment reduced AK lesions to 3.2 (2.9), (p = .0001; Wilcoxon Test), representing a 55% relative reduction. Dermoscopy score was reduced to 3.3 (2.6) (p = .0001) (a reduction of 53%). The IGS after ACTX treatment was +1.9 (1.1), with a median of 2.0. A total of 86% of subjects showed a clinical improvement of IGS (≥1) with a very significant/complete clearance (score +3 or +4) in 42% subjects. No change or a worsening of AK lesions was observed in 14% of the subjects. The product was well tolerated. No serious adverse events were reported during the duration of the trial.
  
  
  
  In this multicenter, assessor-blinded trial, the use of a film-forming medical device with sun protection and anti-inflammatory actions was effective in reducing AK lesions and improving the dermoscopy aspect of the target lesion in 86% of treated subjects. A head-to-head trial evaluating the efficacy of this medical device in comparison with diclofenac is warranted to establish whether this therapeutic approach could offer additional advantages in term of AK lesion reduction compared to an established topical treatment. (Trial ID: ISRCTN72020277).
authors.affiliation: a Dermatology Clinic , Modena , Italy.
authors.forename: Mario
authors.initials: M
authors.lastname: Puviani
authors.affiliation: b Sant'Agostino Dermatology Service , Milan , Italy.
authors.forename: Chiara
authors.initials: C
authors.lastname: Galloni
authors.affiliation: b Sant'Agostino Dermatology Service , Milan , Italy.
authors.forename: Silvia
authors.initials: S
authors.lastname: Marchetti
authors.affiliation: c Ospedale Erba Renaldi, Menaggio ASST Valtellina e Alto Lario , Italy.
authors.forename: Paolo
authors.initials: P
authors.lastname: Sergio Pavone
authors.affiliation: c Ospedale Erba Renaldi, Menaggio ASST Valtellina e Alto Lario , Italy.
authors.forename: Silvia
authors.initials: S
authors.lastname: Lovati
authors.affiliation: c Ospedale Erba Renaldi, Menaggio ASST Valtellina e Alto Lario , Italy.
authors.forename: Giuseppe
authors.initials: G
authors.lastname: Pistone
authors.affiliation: d U.O.C Dermatologia, MTS-AOUP, "Paolo Giaccone" Hospital , Palermo.
authors.forename: Valentina
authors.initials: V
authors.lastname: Caputo
authors.affiliation: d U.O.C Dermatologia, MTS-AOUP, "Paolo Giaccone" Hospital , Palermo.
authors.forename: Giovanna
authors.initials: G
authors.lastname: Tilotta
authors.affiliation: e DermoLaser Office , Verona , Italy.
authors.forename: Giuseppe
authors.initials: G
authors.lastname: Scarcella
authors.affiliation: f Clinica Dermatologica, Università Tor Vergata , Roma , Italy.
authors.forename: Elena
authors.initials: E
authors.lastname: Campione
authors.affiliation: f Clinica Dermatologica, Università Tor Vergata , Roma , Italy.
authors.forename: Laura
authors.initials: L
authors.lastname: Diluvio
authors.affiliation: f Clinica Dermatologica, Università Tor Vergata , Roma , Italy.
authors.forename: Virginia
authors.initials: V
authors.lastname: Garofalo
authors.affiliation: f Clinica Dermatologica, Università Tor Vergata , Roma , Italy.
authors.forename: Luca
authors.initials: L
authors.lastname: Bianchi
authors.affiliation: g Solo Practice , Milan , Italy.
authors.forename: Massimo
authors.initials: M
authors.lastname: Milani
mesh_terms: D000287:Administration, Topical; D000368:Aged; D000369:Aged, 80 and over; D002626:Chemistry, Pharmaceutical; D005260:Female; D006801:Humans; D055623:Keratosis, Actinic / Q000188:drug therapy*; D008297:Male; D008875:Middle Aged; D010865:Pilot Projects; D010894:Piroxicam / Q000008:administration & dosage*; D012878:Skin Neoplasms / Q000473:pathology; D013473:Sunscreening Agents / Q000008:administration & dosage*; D016896:Treatment Outcome
chemical_list: D013473:Sunscreening Agents; D010894:Piroxicam
keywords: Actinic keratosis; controlled trial; piroxicam