Real-World Effectiveness and Safety of Field- and Lesion-Directed Treatments for Actinic Keratosis.

Background: Real-world data for actinic keratosis treatment in the United States is lacking. Objectives: To understand real-world treatment patterns for actinic keratosis by type and modality, and compare effectiveness and safety of therapies, either alone or in combination. Methods: Medical charts of 429 patients were identified; clinical and outcome data were analyzed. Results: The first treatment after the index diagnosis was most frequently a procedure, followed by a topical agent. Treatment with 5-fluorouracil, ingenol mebutate, imiquimod, cryotherapy, or cryotherapy plus one topical (CRYO+One Topical) reduced actinic keratoses by 66.0%, 69.3%, 72.5%, 72.9%, and 73.0%, respectively; ≥75% clearance (AKCLEAR 75) was achieved in 57.1%, 72.7%, 57.1%, 62.4%, and 62.0% of those patients. Treatment effectiveness was positively correlated with the number of baseline actinic keratoses for topical and for procedural plus topical combination treatments, but not for procedural treatments alone. Adverse reactions (ARs) were more common with cryotherapy (9.7%); local skin responses (LSRs) were more common with field-directed (18.5%-43.1%) and CRYO+One Topical therapy (21.3%). Limitations: This was a retrospective study of limited duration and population size. Conclusions: The most commonly used treatments for patients with 6 or more actinic keratoses were topicals and a procedure plus topical combination, which also achieved higher rates of complete clearance than a procedure alone. ARs and LSRs were few in frequency and type.