| Not Yet Recruiting | Actinic Keratoses Treated With 5-fluorouracil Plus Aluminum NCT07401277 | West Virginia University | Phase 1 |
| Withdrawn | Immunotherapy Before Transplantation for Skin Cancer Prevention in Organ Transplant Recipients NCT04329221 | Massachusetts General Hospital | Phase 2 |
| Withdrawn | Immunotherapy After Transplantation for Skin Cancer Prevention in Organ Transplant Recipients NCT04642287 | Massachusetts General Hospital | Phase 2 |
| Not Yet Recruiting | Efficacy and Safety of Cryotherapy Followed by Tirbanibulin Ointment for Actinic Keratosis on the Scalp and Fo NCT07273656 | University Hospital, Lille | Phase 3 |
| Not Yet Recruiting | PDT vs Peels for Treatment of Actinic Keratoses NCT04429308 | Northwestern University | Phase 2 |
| Completed | Activation of Ameluz With BBL HEROic for the Treatment of Actinic Keratoses and Photodamage NCT07053852 | Sherrif Ibrahim | Phase 1 |
| Not Yet Recruiting | Efficacy of Topical 5-Fluorouracil Vs Calcipotriol As Photodynamic Therapy Pre-treatment for Field Actinic Ker NCT06685588 | St Vincent's University Hospital, Ireland | N/A |
| Not Yet Recruiting | Methyl Aminolevulinate 8% and 16% Incubated by 1 and 3 for Actinic Keratoses Treatment NCT06507644 | University of Nove de Julho | N/A |
| Recruiting | Combination Therapy of 5-Fluorouracil and CALcipotriol Versus 5-Fluorouracil in the Treatment of Actinic Kerat NCT06499415 | Maastricht University Medical Center | Phase 4 |
| Completed | Imaging Techniques to Monitor Photosensitizer and sO2 Levels During Photodynamic Therapy of Actinic Keratoses NCT05923060 | Case Comprehensive Cancer Center | Phase 2 |
| Not Yet Recruiting | Efficacy And Safety Of Illumination Dose Reduction In Red Light Photodynamic Therapy For Actinic Keratoses NCT06545396 | Fundacion para la Investigacion Biomedica del Hospital Universitario Ramon y Cajal | N/A |
| Enrolling By Invitation | Efficacy and Safety of Cryotherapy Versus 5-Fluorouracil in the Treatment of Actinic Keratosis NCT06461442 | University of California, Davis | Phase 4 |
| Completed | Evaluating an Artificial Intelligence Tool to Help Primary Care Doctors Diagnose Skin Conditions. NCT07428941 | AI Labs Group S.L | — |
| Recruiting | Investigation of the Effect of Lipikar Baume AP+M NCT06385340 | CentroDerm GmbH | N/A |
| Recruiting | Effect of Lipikar Urea 30% Before Actinic Keratoses Treatment NCT06274320 | Cosmetique Active International | N/A |
| Recruiting | The Preventive Role of Fractionated Laser Resurfacing Against Actinic Neoplasia in an At-Risk Geriatric Popula NCT06428721 | Wright State University | N/A |
| Recruiting | SYsteMatical Trained learnIng aLgorithms for Oral carcInogenesiS Interpretation by Optical Coherence Tomograph NCT06321003 | University of Palermo | — |
| Withdrawn | Tirbanibulin 1% Ointment for the Treatment of Actinic Keratosis on the Back of the Hands NCT06026358 | Medical University of Graz | Phase 4 |
| Completed | Impact of Madecassoside and 5 % Panthenol Cream in Post Photodynamic Therapy for Actinic Keratosis NCT05937529 | Merete Haedersdal | N/A |
| Unknown | Cryotherapy in Combination with Red Light PDT for Actinic Keratosis of Full Face NCT06745999 | Psoriasis Treatment Center of Central New Jersey | Phase 4 |
| Completed | OCT and Invasion in Cutaneous Skin Lesions NCT06014697 | Maastricht University Medical Center | — |
| Unknown | Gene and Protein Expression Profiles After Treatment of Actinic Keratoses NCT05740969 | Ismail Gögenur | Phase 2 |
| Active Not Recruiting | Study to Evaluate the Safety, Tolerability and Efficacy of BF-200 ALA (Ameluz®) in the Field-directed Treatmen NCT05662202 | Biofrontera Inc. | Phase 3 |
| Active Not Recruiting | Patient Decision Aid for the Treatment of Actinic Keratosis NCT06008171 | Maastricht University Medical Center | N/A |
| Completed | ADL-PDT Under Routine Clinical Conditions in Patients With Actinic Keratosis NCT05725213 | Galderma Laboratorium GmbH | — |
| Completed | Efficacy and Safety of Tixel Treatment on Facial and/or Scalp Actinic Keratoses. NCT05365386 | Novoxel Ltd. | N/A |
| Active Not Recruiting | Impact of Human Papillomavirus (HPV) Vaccination on Burden of Disease in Patients with Actinic Keratosis NCT05202860 | Merete Haedersdal | Phase 2 |
| Completed | Therapeutic Equivalence of Fluorouracil Cream, 5% Compared With Fluorouracil 5% Topical Cream of MylanPharmace NCT05078827 | Encube Ethicals Pvt. Ltd. | Phase 3 |
| Completed | Comparison of Nicotinamide Treatments for Actinic Keratosis NCT07049068 | Federal University of Rio Grande do Sul | Phase 1 |
| Completed | Clinical Evaluation of a Short Illumination Duration (35 Minutes) When Performing PDT of AK Using the Dermaris NCT05522036 | Centre Dermatologique du Roy | N/A |
| Unknown | Phase I/IIa Trial to Evaluate AVX001 Gel in Doses of 1% or 3% Compared With Vehicle Over Four Weeks of Field-d NCT05164393 | Coegin Pharma AB | Phase 1 / Phase 2 |
| Completed | Incidence of Melanoma and Non-melanoma Skin Cancer in People With Vitiligo NCT04969419 | Momentum Data | — |
| Completed | Earliest Stage Treatment of Aktinic Keratosis With Imiquimod 3.75% Cream NCT04842422 | Medical University of Graz | Phase 4 |
| Terminated | Comparing Immune Responses to Topical Imiquimod NCT04809662 | University of California, Davis | — |
| Active Not Recruiting | High- and Low-risk Actinic Keratosis Referrals to Secondary Care NCT05976061 | Maastricht University Medical Center | — |
| Completed | Frequency and Intensity of Local Reactions in Patients Treated With 4% 5-FU vs 4% 5-FU Associated With an Emol NCT04875026 | Pierre Fabre Medicament | Phase 4 |
| Active Not Recruiting | The Influence of an E-learning Program on Recognition of Actinic Keratosis NCT05987553 | Maastricht University Medical Center | — |
| Enrolling By Invitation | HRQoL Keratinocyte Carcinomas NCT04814953 | University Hospital, Ghent | — |
| Completed | Evaluation of The Efficacy and Safety of Tixel Treatment for the Treatment of Facial and/or Scalp Actinic Kera NCT04527653 | Novoxel Ltd. | N/A |
| Completed | Study to Evaluate the Safety of BF-200 ALA (Ameluz®) for Photodynamic Therapy (PDT) in the Treatment of Expand NCT04319159 | Biofrontera Bioscience GmbH | Phase 1 |
| Active Not Recruiting | Implementation of Actinic Keratosis Guideline Among General Practitioners. NCT05976048 | Maastricht University Medical Center | — |
| Terminated | Duration of Ameluz Application in Acral Actinic Keratoses Response NCT03963102 | Royal Cornwall Hospitals Trust | Phase 4 |
| Completed | Multicenter Study to Assess the Efficacy and Safety of Methyl Aminolevulinate Hydrochloride (MAL) 16.8% Cream NCT04085367 | Galderma R&D | Phase 3 |
| Terminated | Combination Topical Therapy for Treatment of Scalp Actinic Keratoses NCT03996252 | Tulane University | EARLY_Phase 1 |
| Completed | Single-Center Study Evaluating Systemic Exposure and Safety of KX2-391 Ointment 1% on the Face or Balding Scal NCT03575780 | Athenex, Inc. | Phase 1 |
| Unknown | Aminolevulinic Acid-photodynamic Therapy for Facial Actinic Keratosis Treatment and Prevention NCT03642535 | Shanghai Dermatology Hospital | Phase 4 |
| Unknown | The Study of Plum-blossom Needling Enhancing Efficacy of Aminolevulinic Acid-photodynamic Therapy for Actinic NCT03596619 | Shanghai Dermatology Hospital | N/A |
| Completed | 5-ALA Patch-PDT of Actinic Keratosis on the Upper Extremities NCT03606122 | photonamic GmbH & Co. KG | Phase 2 |
| Completed | Microwave Therapy for Treatment of Precancerous Actinic Keratoses NCT03483935 | University of Dundee | N/A |
| Completed | Nevus Doctor Clinical Decision Support for GPs NCT03246412 | University Hospital of North Norway | N/A |
| Completed | Therapeutic Equivalence of Diclofenac Sodium Gel 3% vs Solaraze ® in the Treatment of Actinic Keratosis NCT03826550 | Encube Ethicals Pvt. Ltd. | Phase 3 |
| Recruiting | Effectiveness of Fractionated Laser Resurfacing to Protect Geriatric Skin From Actinic Neoplasia NCT03906253 | Wright State University | N/A |
| Completed | Daylight Photodynamic Therapy for Actinic Keratosis NCT03322293 | University of California, San Francisco | Phase 1 |
| Completed | Treatment of Actinic Keratosis With 5% KOH Solution NCT04024579 | Infectopharm Arzneimittel GmbH | — |
| Completed | Validation of SHADE a Mobile Technology for Monitoring of Ultraviolet Exposure NCT03315286 | Weill Medical College of Cornell University | N/A |
| Completed | Evaluating Skin Appearance Following 5-Flourouracil Cream for Treatment of Actinic Keratosis and the Effects o NCT03279328 | University of Arizona | Phase 4 |
| Completed | A Multi-Center Study to Evaluate the Efficacy and Safety of KX2-391 Ointment 1% on AK on Face or Scalp NCT03285477 | Almirall, S.A. | Phase 3 |
| Completed | PRO With Luxerm® in the Field Treatment of Thin and Non-hyperkeratotic Non-pigmented AK NCT03511326 | Galderma R&D | Phase 4 |
| Active Not Recruiting | Photodynamic Therapy Incubation Times for Actinic Keratosis NCT03066843 | Northwestern University | N/A |
| Completed | Nicotinamide for Prevention of Pre-malignant Actinic Keratosis in Kidney Transplant Recipients NCT04843553 | Rhode Island Hospital | EARLY_Phase 1 |
| Unknown | New Treatments for Actinic Keratoses of the Scalp NCT05456334 | Helsinki University Central Hospital | N/A |
| Completed | Daylight-PDT With MAL for AK and Photodamaged Skin NCT02736760 | University Hospital Regensburg | Phase 4 |
| Withdrawn | Photo-therapy With a Topical Retinoid Versus Photo-therapy Alone for Actinic Keratoses NCT00756288 | Northwestern University | N/A |
| Completed | Bilateral Comparison of Treatment of Facial Actinic Keratoses Using Microneedling and Photodynamic Therapy Wit NCT02622594 | Dermatology, Laser & Vein Specialists of the Carolinas | Phase 4 |
| Completed | Actinic Keratoses Treatment With Metvix® in Combination With Light NCT02373371 | University Hospital, Limoges | Phase 3 |
| Completed | Treatment of Actinic Keratoses (AK) on the Face NCT02411851 | Icahn School of Medicine at Mount Sinai | Phase 1 |
| Completed | A Clinical Trial Evaluating the Role of Systemic Antihistamine Therapy in the Reduction of Adverse Effects Ass NCT02451579 | Goldman, Butterwick, Fitzpatrick and Groff | N/A |
| Completed | Daylight-mediated Photodynamic Therapy of Actinic Keratoses:Comparing 0.2%HAL With 16%MAL NCT02149342 | Joint Authority for Päijät-Häme Social and Health Care | Phase 1 / Phase 2 |
| Completed | A Comparison of White-light and Daylight Topical Methyl 5-aminolaevulinic Acid Photodynamic Therapy for Actini NCT02520700 | St Vincent's University Hospital, Ireland | N/A |
| Completed | Phase 3b Study of Metvix NDL-PDT Versus Metvix c-PDT in Subjects With Actinic Keratoses NCT01821391 | Galderma R&D | Phase 3 |
| Completed | Effects of Topical Diclofenac on Tumor Metabolism NCT01935531 | University Hospital Regensburg | Phase 4 |
| Completed | Safety and Efficacy of Ingenol Mebutate 0.05% Gel When Used After Cryotherapy in the Hypertrophic Actinic Kera NCT02251652 | Icahn School of Medicine at Mount Sinai | Phase 4 |
| Completed | Continuous Quality Improvement (CQI) Pilot Study Evaluating the Utility of an Educational Video NCT02062853 | University of California, Davis | N/A |
| Terminated | Imiquimod Versus Photodynamic Therapy of Actinic Keratoses in Organ Transplant Recipients NCT01538901 | Medical University of Vienna | Phase 4 |
| Completed | Intra-individual Comparison of Efficacy and Safety of Metvix® Natural Daylight Photodynamic Therapy Versus Con NCT01475071 | Galderma R&D | Phase 3 |
| Completed | A Bioequivalence Study With Clinical Endpoints Comparing Generic Imiquimod Cream, 3.75% and Zyclara™ (Imiquimo NCT01502020 | Actavis Mid-Atlantic LLC | N/A |
| Terminated | Prevention of UV-induced Carcinogenic Skin Alterations in Immunosuppressed Solid Organ Transplanted Patients NCT01532453 | Spirig Pharma Ltd. | Phase 3 |
| Completed | Bioequivalence Study of Generic Fluorouracil 0.5% Cream and 0.5% Carac® and Placebo NCT01354717 | Spear Pharmaceuticals | Phase 3 |
| Completed | Photodynamic Therapy With Levulan® +/- Topical Retinoid Pre-Treatment In The Treatment Of Actinic Keratoses NCT01053000 | Stewart, Roger H., M.D., P.A. | N/A |
| Completed | A Multicenter Study to Evaluate the Efficacy and Safety of PEP005 (Ingenol Mebutate) Gel When Used to Treat Ac NCT00942604 | Peplin | Phase 3 |
| Terminated | ALA-PDT Versus Vehicle PDT for Treatment of AK and Reduction of New NMSC in Solid Organ Transplant Recipients NCT00865878 | DUSA Pharmaceuticals, Inc. | Phase 2 |
| Completed | The Efficacy and Tolerability of Oleogel-S-10 in Patients With Actinic Keratoses NCT00786994 | Birken AG | Phase 2 |
| Completed | Topical Imiquimod Cream in Combination With Cryotherapy for the Treatment of Actinic Keratoses NCT00774787 | Rigel Dermatology | Phase 4 |
| Completed | A Multicenter Study to Evaluate the Efficacy and Safety of PEP005 (Ingenol Mebutate) Gel When Used to Treat Ac NCT00742391 | Peplin | Phase 3 |
| Completed | Carac & PDT Combination in the Treatment Of Actinic Keratoses NCT06712381 | Skin Laser & Surgery Specialists | Phase 1 / Phase 2 |
| Completed | A Randomized Multicenter Study of Daylight Mediated Photodynamic Therapy (PDT) NCT00711178 | Bispebjerg Hospital | N/A |
| Completed | Bioequivalence of Generic Imiquimod Cream, 5% When Compared to Aldara™ (Imiquimod) Cream, 5% in the Treatment NCT00948428 | Actavis Inc. | Phase 3 |
| Completed | Follow-up Study to Evaluate Sustained Clearance Rates of Actinic Keratoses up to One Year NCT00668733 | Graceway Pharmaceuticals, LLC | — |
| Completed | Safety and Effectiveness Study of Imiquimod Creams for Treatment of Actinic Keratoses (AKs) NCT00605176 | Graceway Pharmaceuticals, LLC | Phase 3 |
| Unknown | Phase II AK Study in Organ Transplant Patients NCT00829192 | Clinuvel Pharmaceuticals Limited | Phase 2 |
| Completed | Pharmacokinetic Study to Evaluate the Extent of Systemic Absorption of PEP005 NCT00544258 | Peplin | Phase 1 |
| Completed | A Photodynamic Therapy for Treatment of Actinic Keratoses NCT00558688 | Northwestern University | N/A |
| Completed | A Study to Determine the Optimal Tolerated Regime and Safety of PEP005 Topical Gel NCT00427050 | Peplin | Phase 2 |
| Completed | Treatment of Actinic Keratoses With Photodynamic Therapy Using Sunlight Versus Red Light NCT00432224 | Bispebjerg Hospital | N/A |
| Completed | A Study to Follow up Recurrence Rates of Actinic Keratoses One Year After Completion of Study 1487-IMIQ NCT00189254 | MEDA Pharma GmbH & Co. KG | — |
| Completed | Safety and Efficacy of Imiquimod Applied in Dose-Cycle for Actinic Keratoses NCT00175643 | University of British Columbia | Phase 3 |
| Completed | An Open-Label 18-Month Safety Study of Fluorouracil Cream 0.5% for the Treatment of Actinic Keratoses NCT00377273 | Sanofi | Phase 4 |