Evidence for field cancerisation treatment of actinic keratoses with topical diclofenac in hyaluronic acid

Martina Ulrich, Giovanni Pellacani, Carlos Ferrandiz, John T. Lear

Research output: Contribution to journalReview articleResearchpeer-review

18 Citations (Scopus)

Abstract

Actinic keratosis (AK) is a common skin disease seen in daily practice. It is associated with a risk of progression to invasive squamous cell carcinoma and can be regarded as a marker of increased risk for nonmelanoma skin cancer. The use of a field-directed treatment approach reflects the need to initiate early treatment over an affected area to prevent tumour development and local recurrence. Candidate field-directed treatments require a mechanism of action compatible with an effect on field cancerisation, immediate and long-term efficacy against visible lesions and efficacy against subclinical AK. Applicability to large treatment areas, tolerability compatible with long-term use, utility in organ transplant patients and, ideally, evidence of extended long-term activity may also be desirable. We review the evidence of a role for topical diclofenac sodium 3% administered in a 2.5% hyaluronic acid gel (diclofenac/ HA) as field-directed treatment. Diclofenac/HA directly targets AK pathophysiology through multiple mechanisms, including induction of apoptosis, inhibition of angiogenesis and reduced inflammation. Clearance of visible field cancerisation is safely and rapidly achieved with a 90-day treatment course in patients with affected areas of up to 50 cm2 and is associated with a ≥75% reduction in target lesion number score in 85% and 91% of patients, respectively, at 30 days and 1 year post-treatment. Following treatment of AK in high-risk transplant patients, 45% remained free of lesions in the treatment area at 2 years post-treatment. We conclude that diclofenac/HA fulfils most criteria necessary to be considered an appropriate candidate for a field-directed treatment in AK.
Original languageEnglish
Pages (from-to)158-167
JournalEuropean Journal of Dermatology
Volume24
Issue number2
DOIs
Publication statusPublished - 1 Jan 2014

Keywords

  • Actinic keratoses
  • Diclofenac sodium
  • Field cancerisation
  • Hyaluronic acid
  • Subclinical lesions

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