| Withdrawn | Koebner's Phenomenon in Psoriasis and Lichen Planus NCT06021405 | Marie-Charlotte Brüggen | N/A |
| Not Yet Recruiting | Systemic Treatment Options for Generalized Lichen Planus NCT06739551 | Sheikh Zayed Medical College | Phase 2 |
| Not Yet Recruiting | Identification of Cutaneous and Blood Biomarkers Predictive of Response to Systemic Treatments During Chronic NCT06599411 | Assistance Publique - Hôpitaux de Paris | — |
| Enrolling By Invitation | Vaginal Ecosystem and Network in the United States Study NCT06472765 | Vaginal Biome Science | — |
| Recruiting | Cellular and Molecular Biomarkers in Patients With Lichen Planus NCT06451744 | Institut Pasteur | N/A |
| Recruiting | Determinants of Chronic Inflammatory Skin Disease Trajectories NCT05928169 | University Hospital Schleswig-Holstein | — |
| Terminated | Study of the Characteristics of Pruritus in Patients With Frontal Fibrosing Alopecia or Lichen Planus Pilaris NCT05761158 | University Hospital, Brest | — |
| Completed | Adjunctive Oral Systemic Vitamin E Therapy on Salivary Nitric Oxide Level in Patients With Erosive Oral Lichen NCT05787925 | Hams Hamed Abdelrahman | N/A |
| Unknown | Treatment Of Oral Lichen Planus NCT06327620 | Mansoura University | N/A |
| Completed | Early Detection of Vulval CAncer Through Self-Examination (EDuCATE): Intervention Study NCT04952961 | University of Manchester | N/A |
| Completed | Ixekizumab in Adult Patients With Lichen Planus and Lichen Planopilaris NCT05030415 | University of New Mexico | EARLY_Phase 1 |
| Unknown | Assessment of PD-1 and PD-L1Tissue Expression Levels in Lichen Planus Patients: A Case-Control Study NCT04892381 | Cairo University | — |
| Completed | Laser Therapy in Women With Lichenoid Disorders NCT04697563 | Medical University of Graz | N/A |
| Unknown | Telangiectatic Palmoplantar Keratoderma in Systemic and Subacute Lupus Erythematosus NCT04356014 | University Hospital, Montpellier | — |
| Completed | A Study to Assess the Efficacy, Safety, and Tolerability of KPL-716 in Reducing Pruritus in Chronic Pruritic D NCT03858634 | Genentech, Inc. | Phase 2 |
| Completed | Methods Validation Assessment for Study of Inflammatory Skin Disease NCT03796806 | Mayo Clinic | — |
| Completed | Pain Outcomes Following Intralesional Corticosteroid Injections NCT03630198 | Vanderbilt University Medical Center | Phase 4 |
| Completed | Topical Ruxolitinib Lichen Planus NCT03697460 | Aaron R. Mangold | Phase 2 |
| Completed | a Flexible Wound Dressing for the Management of Genital Skin Conditions NCT05396261 | Stratpharma AG | N/A |
| Unknown | Mechanisms of Action of Photo(Chemo)Therapy in Skin Diseases NCT03340155 | Medical University of Graz | N/A |
| Completed | Use of Injectable Platelet Rich Fibrin in Lichen Planus NCT03265093 | Bezmialem Vakif University | N/A |
| Completed | Dexamethasone Solution for the Treatment of Oral Lichen Planus NCT02850601 | Brigham and Women's Hospital | Phase 2 |
| Completed | Implication of Human Papillomavirus (HPV) in Lichen Physiopathology in Human (HPVLichen) NCT02761122 | Institut Pasteur | N/A |
| Unknown | Tobacco Cessation Intervention Study for Oral Diseases NCT02737176 | Association for the Japanese Academy of Maxillofacial Implants | N/A |
| Terminated | Vulvar Mucosal Specialty Clinic Chart Review NCT02881229 | Northwestern University | — |
| Unknown | Off-Label Use of Ribavirin in Management of Mucocutaneous Extrahepatic Manifestations of HCV Infection NCT02261662 | Tanta University | N/A |
| Unknown | Incidence of Esophageal Lichen Planus in Patients With Known Oral Lichen Planus NCT02532166 | Ruhr University of Bochum | N/A |
| Completed | Diagnostic Accuracy of "Three Rings Vulvoscopy" for Detection of Vulvar Dermatosis NCT02732145 | Ginekološka Poliklinika Dr. Vesna Harni | N/A |
| Unknown | Pilot Study of Apremilast (CC-10004) in the Treatment of Moderate to Severe Lichen Planus NCT01041625 | Virginia Clinical Research, Inc. | Phase 2 |
| Completed | Exploratory Study of Natural Killer Cells in Human Skin NCT00824889 | Assistance Publique Hopitaux De Marseille | N/A |
| Active Not Recruiting | Widefield Fluorescence and Reflectance Imaging Systems and Oral Tissue Samples in Monitoring Participants at R NCT00542373 | M.D. Anderson Cancer Center | N/A |
| Terminated | Use of Etanercept in the Treatment of Moderate to Severe Lichen Planus NCT00285779 | Stanford University | Phase 2 |
| Terminated | A Safety and Efficacy Study of Alefacept in the Treatment of Moderate to Severe Erosive Mucosal Lichen Planus NCT00135733 | Massachusetts General Hospital | Phase 2 |
| Completed | Evaluation and Treatment of Oral Soft Tissue Diseases NCT00001601 | National Institute of Dental and Craniofacial Research (NIDCR) | N/A |
| Completed | Biomarkers for Oral Cancer NCT00341497 | National Cancer Institute (NCI) | — |