Microneedle Lesion Preparation Prior to Aminolevulinic Acid Photodynamic Therapy (ALA-PDT) for AK on Face

A Phase 2 Study of the Effect of Microneedle Lesion Preparation, Incubation Time and Light Power Density on Photodynamic Therapy With Levulan Kerastick (Aminolevulinic Acid HCl) for Topical Solution, 20% + Blue Light for the Field Treatment of Actinic Keratoses on the Face

The purpose of this study is to determine the viability of microneedle lesion preparation (MN) to enhance treatment benefit when performed prior to ALA PDT to an actinic keratosis (AK) field on the face.

Inclusion Criteria:

• Four to eight AKs on the face

Exclusion Criteria:

• Pregnancy

• history of cutaneous photosensitization, porphyria, hypersensitivity to porphyrins or photodermatosis

• lesions suspicious for skin cancer (skin cancer not ruled out by biopsy) or untreated skin cancers within the Treatment Area

• skin pathology or condition which could interfere with the evaluation of the test product or requires the use of interfering topical or systemic therapy

• Subject is immunosuppressed

• currently enrolled in an investigational drug or device study

• has received an investigational drug or been treated with an investigational device within 30 days prior to the initiation of treatment

• known sensitivity to one or more of the vehicle components (ethyl alcohol, isopropyl alcohol, laureth 4, polyethylene glycol)

• has an active herpes simplex infection OR a history of 2 or more outbreaks within the past 12 months, on the face

• use of the following topical preparations on the extremity to be treated:

  • Keratolytics including urea (greater than 5%), alpha hydroxyacids [e.g.glycolic acid, lactic acid, etc. greater than 5%], salicylic acid (greater than 2%) within 2 days
  • Curettage or Cryotherapy within 2 weeks of initiation of treatment
  • Retinoids, including tazarotene, adapalene, tretinoin, within 4 weeks
  • Microdermabrasion, laser ablative treatments, ALA-PDT, chemical peels, 5 fluorouracil, diclofenac, ingenol mebutate, imiquimod or other topical treatments for AK within 8 weeks

• use of systemic retinoid therapy within 6 months