title: Effect of intralesional alpha 2-interferon on actinic keratoses.
abstract: The effect of intralesional alpha 2-interferon (IFN) on actinic keratoses was examined in this two-part study. In phase I, 11 of 12 lesions cleared following nine injections of IFN (5 X 10(5) IU per dose) compared with none of 12 keratoses injected with placebo. Smaller doses of IFN (1 X 10(5) IU and 1 X 10(4) IU per injection) produced clearing of 42% and 58% of lesions, respectively. The second phase, which was designed to investigate the optimum schedule for treatment with IFN, showed that a minimum of six injections of IFN (5 X 10(5) IU per injection) was necessary to clear 14 of 15 actinic keratoses. Although this mode of delivery is not practical for clinical use, intralesional alpha 2-IFN demonstrates biologic activity against actinic keratoses.
mesh_terms: D000328:Adult; D002986:Clinical Trials as Topic; D004311:Double-Blind Method; D004334:Drug Administration Schedule; D006801:Humans; D007370:Interferon Type I / Q000008:administration & dosage / Q000627:therapeutic use*; D007642:Keratosis / Q000209:etiology / Q000628:therapy*; D008875:Middle Aged; D011897:Random Allocation; D011994:Recombinant Proteins / Q000008:administration & dosage / Q000627:therapeutic use*; D013472:Sunlight / Q000009:adverse effects
chemical_list: D007370:Interferon Type I; D011994:Recombinant Proteins