Lichen planus
diseaseOn this page
Also known as lichen ruber planus
Summary
Lichen planus (MONDO:0006572) is a disease (an umbrella term covering 11 Mondo subtypes) with 34 GWAS associations across 10 studies and 37 clinical trials. Top therapeutic interventions include acitretin, alefacept, and alitretinoin. A subtype of dermatitis — broader associated-gene and molecular evidence is on the parent page (see Disease family below).
At a glance
- Umbrella term: 11 Mondo subtypes
- GWAS associations: 34
- Clinical trials: 37
Clinical features
No curated clinical features (Orphanet) for this disease.
Identifiers
Disease identifiers
| Field | Value |
|---|---|
| Canonical name | lichen planus |
| Mondo ID | MONDO:0006572 |
| EFO | EFO:1000726 |
| MeSH | D008010 |
| DOID | DOID:9201 |
| ICD-10-CM | L43 |
| ICD-11 | 1402978031 |
| NCIT | C3189 |
| SNOMED CT | 4776004 |
| UMLS | C0023646 |
| MedGen | 9753 |
| Is cancer (heuristic) | no |
Also known as: lichen ruber planus
Data availability: 34 GWAS associations (10 studies).
Disease family
This is a subtype of dermatitis. Genetic, therapeutic, and trial evidence is largely curated at the broader-term level — see the parent page for the associated-gene cohort and molecular evidence.
Classification path: disease › human disease › disease by body system or component › integumentary system disorder › skin disorder › dermatitis › lichen planus
Related subtypes (32): spongiotic dermatitis, atopic eczema, psoriasis, contact dermatitis, urticaria, acneiform dermatitis, acrodermatitis, folliculitis, granuloma annulare, granulomatous dermatitis, neurodermatitis, neurotic excoriation, parapsoriasis, pityriasis rosea, seborrheic dermatitis, acanthosis nigricans, dermatosis papulosa nigra, lichen sclerosus et atrophicus, vitiligo, acne, porphyria cutanea tarda, dermatomyositis, acute generalized exanthematous pustulosis, hydroa vacciniforme, autoimmune bullous skin disease, cutaneous vasculitis, skin infection, intertrigo, lipodermatosclerosis, exfoliative dermatitis, radiodermatitis, food dermatitis
Subtypes (11): lichen planus, familial, linear lichen planus, actinic lichen planus, annular atrophic lichen planus, annular lichen planus, atrophic lichen planus, lichen planus pigmentosus, lichen planus pemphigoides, bullous lichen planus, hypertrophic lichen planus, lichen planus, oral
Genetics & variants
GWAS landscape
34 GWAS associations across 10 studies. Top hits map to 20 distinct genes (as reported by GWAS).
Top associations by p-value
| rsID | p-value | Gene | Risk allele | Odds ratio |
|---|---|---|---|---|
| rs28592859 | 8e-211 | HLA-DQA1 - HLA-DQB1 | ? | 0.53 |
| rs9459853 | 3e-21 | CEP43 | ? | 0.14 |
| rs2093816 | 6e-18 | LINC02341 | ? | 0.13 |
| rs6780858 | 2e-16 | LPP | ? | 0.12 |
| rs4328441 | 2e-11 | AFG3L1P, AFG3L1P | ? | 0.1 |
| rs193769 | 6e-11 | CLEC16A - HNRNPCP4 | ? | 0.16 |
| rs35318359 | 8e-11 | IL18RAP - SLC9A4 | ? | 0.12 |
| rs35667974 | 2e-10 | IFIH1 | ? | 0.37 |
| rs748670681 | 4e-10 | TNRC18 | ? | 0.26 |
| rs2111485 | 4e-10 | FAP - IFIH1 | ? | 0.09 |
| rs56328339 | 4e-10 | LPP | ? | 0.12 |
| rs10861030 | 7e-10 | C12orf42 - LINC02401 | ? | |
| rs2893907 | 8e-10 | LINC02929 | ? | 0.1 |
| rs117744081 | 3e-09 | CPVL | ? | 0.22 |
| rs1391440 | 3e-09 | TET2-AS1, TET2 | ? | 0.09 |
| rs3825568 | 4e-09 | ZFP36L1 | ? | 0.09 |
| rs3755570 | 8e-09 | ST3GAL6-AS1 | ? | 0.09 |
| rs2927608 | 8e-09 | ERAP2 | ? | 0.09 |
| rs1192863020 | 1e-08 | RPS3 | ? | 1.39 |
| rs10745680 | 1e-08 | PLXNC1 | ? | 0.1 |
| rs2601191 | 2e-08 | IQGAP1 | ? | 0.08 |
| rs112301322 | 2e-08 | IKZF3 | ? | 0.23 |
| rs1432611 | 2e-08 | FOXP1 | ? | 0.09 |
| rs7096384 | 3e-08 | IL2RA - RPL32P23 | ? | 0.08 |
| rs67111717 | 2e-07 | RGS14 | ? | 0.08 |
Top studies (by case count)
| Study | Lead author | Year | Cases | Controls | Title |
|---|---|---|---|---|---|
| GCST90435153 | Reeve MP | 2024 | 9,426 | 823,206 | Oral and non-oral lichen planus show genetic heterogeneity and differential risk for autoimmune disease and oral cancer. |
| GCST90435151 | Reeve MP | 2024 | 7,428 | 404,662 | Oral and non-oral lichen planus show genetic heterogeneity and differential risk for autoimmune disease and oral cancer. |
| GCST90473940 | UK Biobank Whole-Genome Sequencing Consortium | 2025 | 2,491 | 455,949 | Whole-genome sequencing of 490,640 UK Biobank participants. |
| GCST90080351 | Backman JD | 2021 | 1,295 | 385,047 | Exome sequencing and analysis of 454,787 UK Biobank participants. |
| GCST90084337 | Backman JD | 2021 | 1,295 | 385,047 | Exome sequencing and analysis of 454,787 UK Biobank participants. |
| GCST90727064 | Kim HI | 2026 | 674 | 43,352 | Exome sequencing and analysis of 44,028 British South Asians enriched for high autozygosity. |
| GCST90080350 | Backman JD | 2021 | 612 | 387,316 | Exome sequencing and analysis of 454,787 UK Biobank participants. |
| GCST90084336 | Backman JD | 2021 | 612 | 387,316 | Exome sequencing and analysis of 454,787 UK Biobank participants. |
| GCST90727037 | Kim HI | 2026 | 273 | 43,753 | Exome sequencing and analysis of 44,028 British South Asians enriched for high autozygosity. |
| GCST004090 | Nagao Y | 2017 | 71 | 0 | Genome-Wide Association Study Identifies Risk Variants for Lichen Planus in Patients With Hepatitis C Virus Infection. |
Variant details and genetic-evidence tiers
Tier distribution (top 50 variants)
| Tier | Variants |
|---|---|
| Tier 1: coding | 3 |
| Tier 2: splice/UTR | 2 |
| Tier 3: regulatory | 0 |
| Tier 4: intronic/intergenic | 20 |
MAF distribution
| Bucket | Variants |
|---|---|
| common (>=0.05) | 23 |
| low_freq (0.01-0.05) | 0 |
| rare (<0.01) | 0 |
| unknown | 2 |
Functional consequences
| Consequence | Count |
|---|---|
| intron_variant | 13 |
| intergenic_variant | 7 |
| missense_variant | 3 |
| 3_prime_UTR_variant | 1 |
| 5_prime_UTR_variant | 1 |
Top variants
| rsID | Chr | Pos | Alleles | MAF | Consequence | Gene | p-value | Tier |
|---|---|---|---|---|---|---|---|---|
| rs28592859 | 6 | 32659295 | G>A | 0.05 | intergenic_variant | HLA-DQA1 - HLA-DQB1 | 8e-211 | Tier 4: intronic/intergenic |
| rs9459853 | 6 | 167052286 | C>A,T | 0.05 | 3_prime_UTR_variant | CEP43 | 3e-21 | Tier 2: splice/UTR |
| rs2093816 | 13 | 42471900 | C>T | 0.05 | intergenic_variant | LINC02341 | 6e-18 | Tier 4: intronic/intergenic |
| rs6780858 | 3 | 188414322 | A>G | 0.05 | intron_variant | LPP | 2e-16 | Tier 4: intronic/intergenic |
| rs4328441 | 16 | 89983793 | G>C,T | 0.05 | intron_variant | AFG3L1P, AFG3L1P | 2e-11 | Tier 4: intronic/intergenic |
| rs193769 | 16 | 11211968 | T>A,C,G | 0.05 | intron_variant | CLEC16A - HNRNPCP4 | 6e-11 | Tier 4: intronic/intergenic |
| rs35318359 | 2 | 102456672 | T>TATAA,TATAAATAAATAATATATAA,TATAC | 0.05 | intergenic_variant | IL18RAP - SLC9A4 | 8e-11 | Tier 4: intronic/intergenic |
| rs35667974 | 2 | 162268127 | T>A,C,G | 0.05 | missense_variant | IFIH1 | 2e-10 | Tier 1: coding |
| rs748670681 | 7 | 5397122 | C>T | intron_variant | TNRC18 | 4e-10 | Tier 4: intronic/intergenic | |
| rs2111485 | 2 | 162254026 | A>G | 0.05 | intergenic_variant | FAP - IFIH1 | 4e-10 | Tier 4: intronic/intergenic |
| rs56328339 | 3 | 188682769 | C>T | 0.05 | intron_variant | LPP | 4e-10 | Tier 4: intronic/intergenic |
| rs10861030 | 12 | 103499166 | C>A,G | 0.05 | intergenic_variant | C12orf42 - LINC02401 | 7e-10 | Tier 4: intronic/intergenic |
| rs2893907 | 10 | 62622599 | A>C | 0.05 | intron_variant | LINC02929 | 8e-10 | Tier 4: intronic/intergenic |
| rs117744081 | 7 | 29092663 | A>G | 0.05 | missense_variant | CPVL | 3e-09 | Tier 1: coding |
| rs1391440 | 4 | 105195804 | C>G | 0.05 | intron_variant | TET2-AS1, TET2 | 3e-09 | Tier 4: intronic/intergenic |
| rs3825568 | 14 | 68793871 | C>G,T | 0.05 | 5_prime_UTR_variant | ZFP36L1 | 4e-09 | Tier 2: splice/UTR |
| rs3755570 | 3 | 98731659 | A>C,G,T | 0.05 | intron_variant | ST3GAL6-AS1 | 8e-09 | Tier 4: intronic/intergenic |
| rs2927608 | 5 | 96916728 | G>A,C,T | 0.05 | intron_variant | ERAP2 | 8e-09 | Tier 4: intronic/intergenic |
| rs1192863020 | 11 | 75411547 | G>A,T | intergenic_variant | RPS3 | 1e-08 | Tier 4: intronic/intergenic | |
| rs10745680 | 12 | 94221051 | A>C,G,T | 0.05 | intron_variant | PLXNC1 | 1e-08 | Tier 4: intronic/intergenic |
| rs2601191 | 15 | 90392993 | T>A,C | 0.05 | intron_variant | IQGAP1 | 2e-08 | Tier 4: intronic/intergenic |
| rs112301322 | 17 | 39788266 | C>A,G,T | 0.05 | missense_variant | IKZF3 | 2e-08 | Tier 1: coding |
| rs1432611 | 3 | 71520527 | G>T | 0.05 | intron_variant | FOXP1 | 2e-08 | Tier 4: intronic/intergenic |
| rs7096384 | 10 | 6064675 | C>G,T | 0.05 | intergenic_variant | IL2RA - RPL32P23 | 3e-08 | Tier 4: intronic/intergenic |
| rs67111717 | 5 | 177363161 | A>G,T | 0.05 | intron_variant | RGS14 | 2e-07 | Tier 4: intronic/intergenic |
Genes & proteins
No associated-gene cohort resolved for this disease. Atlas builds the molecular and therapeutic sections — associated genes, protein families, druggability, pathways, interactions, and drug associations — by aggregating over a disease’s associated genes (resolved via GWAS / GenCC / ClinVar / CIViC), and none resolved here. This is expected for antibody-mediated, autoimmune, or otherwise non-gene-defined conditions; the curated evidence for this disease is its clinical features, GWAS susceptibility, and clinical trials (above).
Function
No pathway enrichment — requires an associated-gene cohort.
Therapeutics
Drugs indicated for this disease
0 approved, 1 in late-stage (phase 3) trials. Disease-direct ChEMBL indications, not inferred from the associated-gene cohort below.
| Drug | Development status |
|---|---|
| Pimecrolimus | Phase 3 (in late-stage trials) |
Earlier-phase candidates (phase 2, investigational — efficacy not yet established): Alefacept, Alitretinoin, Apremilast, Baricitinib, Clobetasol Propionate, Dexamethasone, Etanercept, Hexaminolevulinate, Hydroxychloroquine, Lycopene, Mechlorethamine, Prednisolone, Ruxolitinib, Secukinumab, Triamcinolone Acetonide.
Clinical trials & evidence
Clinical trials
Clinical trials: 37.
Phase distribution (across all retrieved trials)
| Phase | Trials |
|---|---|
| Not specified | 27 |
| PHASE2 | 8 |
| PHASE4 | 1 |
| EARLY_PHASE1 | 1 |
Top trials by phase / activity
| NCT | Phase | Status | Title |
|---|---|---|---|
| NCT03630198 | PHASE4 | COMPLETED | Pain Outcomes Following Intralesional Corticosteroid Injections |
| NCT06739551 | PHASE2 | NOT_YET_RECRUITING | Systemic Treatment Options for Generalized Lichen Planus |
| NCT00135733 | PHASE2 | TERMINATED | A Safety and Efficacy Study of Alefacept in the Treatment of Moderate to Severe Erosive Mucosal Lichen Planus |
| NCT00285779 | PHASE2 | TERMINATED | Use of Etanercept in the Treatment of Moderate to Severe Lichen Planus |
| NCT01041625 | PHASE2 | UNKNOWN | Pilot Study of Apremilast (CC-10004) in the Treatment of Moderate to Severe Lichen Planus |
| NCT01538732 | PHASE2 | UNKNOWN | Lichen Planus Mucosae at USZ, Efficacy of Oral Alitretinoin |
| NCT02850601 | PHASE2 | COMPLETED | Dexamethasone Solution for the Treatment of Oral Lichen Planus |
| NCT03697460 | PHASE2 | COMPLETED | Topical Ruxolitinib Lichen Planus |
| NCT03858634 | PHASE2 | COMPLETED | A Study to Assess the Efficacy, Safety, and Tolerability of KPL-716 in Reducing Pruritus in Chronic Pruritic Diseases |
| NCT05030415 | EARLY_PHASE1 | COMPLETED | Ixekizumab in Adult Patients With Lichen Planus and Lichen Planopilaris |
| NCT00542373 | Not specified | ACTIVE_NOT_RECRUITING | Widefield Fluorescence and Reflectance Imaging Systems and Oral Tissue Samples in Monitoring Participants at Risk for Developing Oral Cancer |
| NCT05928169 | Not specified | RECRUITING | Determinants of Chronic Inflammatory Skin Disease Trajectories |
| NCT06451744 | Not specified | RECRUITING | Cellular and Molecular Biomarkers in Patients With Lichen Planus |
| NCT06472765 | Not specified | ENROLLING_BY_INVITATION | Vaginal Ecosystem and Network in the United States Study |
| NCT06599411 | Not specified | NOT_YET_RECRUITING | Identification of Cutaneous and Blood Biomarkers Predictive of Response to Systemic Treatments During Chronic Inflammatory Skin Diseases |
| NCT00001601 | Not specified | COMPLETED | Evaluation and Treatment of Oral Soft Tissue Diseases |
| NCT00341497 | Not specified | COMPLETED | Biomarkers for Oral Cancer |
| NCT00824889 | Not specified | COMPLETED | Exploratory Study of Natural Killer Cells in Human Skin |
| NCT02261662 | Not specified | UNKNOWN | Off-Label Use of Ribavirin in Management of Mucocutaneous Extrahepatic Manifestations of HCV Infection |
| NCT02532166 | Not specified | UNKNOWN | Incidence of Esophageal Lichen Planus in Patients With Known Oral Lichen Planus |
| NCT02732145 | Not specified | COMPLETED | Diagnostic Accuracy of Three Rings Vulvoscopy for Detection of Vulvar Dermatosis |
| NCT02737176 | Not specified | UNKNOWN | Tobacco Cessation Intervention Study for Oral Diseases |
| NCT02761122 | Not specified | COMPLETED | Implication of Human Papillomavirus (HPV) in Lichen Physiopathology in Human (HPVLichen) |
| NCT02881229 | Not specified | TERMINATED | Vulvar Mucosal Specialty Clinic Chart Review |
| NCT03265093 | Not specified | COMPLETED | Use of Injectable Platelet Rich Fibrin in Lichen Planus |
| NCT03340155 | Not specified | UNKNOWN | Mechanisms of Action of Photo(Chemo)Therapy in Skin Diseases |
| NCT03796806 | Not specified | COMPLETED | Methods Validation Assessment for Study of Inflammatory Skin Disease |
| NCT04356014 | Not specified | UNKNOWN | Telangiectatic Palmoplantar Keratoderma in Systemic and Subacute Lupus Erythematosus |
| NCT04697563 | Not specified | COMPLETED | Laser Therapy in Women With Lichenoid Disorders |
| NCT04892381 | Not specified | UNKNOWN | Assessment of PD-1 and PD-L1Tissue Expression Levels in Lichen Planus Patients: A Case-Control Study |
| NCT04952961 | Not specified | COMPLETED | Early Detection of Vulval CAncer Through Self-Examination (EDuCATE): Intervention Study |
| NCT05396261 | Not specified | COMPLETED | a Flexible Wound Dressing for the Management of Genital Skin Conditions |
| NCT05761158 | Not specified | TERMINATED | Study of the Characteristics of Pruritus in Patients With Frontal Fibrosing Alopecia or Lichen Planus Pilaris |
| NCT05787925 | Not specified | COMPLETED | Adjunctive Oral Systemic Vitamin E Therapy on Salivary Nitric Oxide Level in Patients With Erosive Oral Lichen Planus |
| NCT06021405 | Not specified | WITHDRAWN | Koebner’s Phenomenon in Psoriasis and Lichen Planus |
| NCT06327620 | Not specified | UNKNOWN | Treatment Of Oral Lichen Planus |
| NCT07570706 | Not specified | COMPLETED | Mucosal and Nasal Involvement and Their Correlation With Smell and Taste Functions in Lichen Planus Patients |
Drugs tested across these trials (top 30)
| Molecule | Max phase | Trials referencing |
|---|---|---|
| ACITRETIN | 4 | 1 |
| ALEFACEPT | 4 | 1 |
| ALITRETINOIN | 4 | 1 |
| APREMILAST | 4 | 1 |
| ETANERCEPT | 4 | 1 |
| IXEKIZUMAB | 4 | 1 |
| VIXARELIMAB | 2 | 1 |
| CHEMBL3775171 | 0 | 1 |
Related Atlas pages
- Drugs: Acitretin, Alefacept, Alitretinoin, Apremilast, Etanercept, Ixekizumab