Lichen planus


lichen planus: A lichen disease that is located_in skin, located_in tongue or located_in oral mucosa, which presents itself in the form of papules, lesions or rashes. The cause is not known.

Endpoint definition

FinnGen phenotype data

392423 individuals

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Apply sex-specific rule None


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Check conditions None


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Check pre-conditions, main-only, mode, registry filters

Hospital Discharge: ICD-10 L43
Hospital discharge: ICD-9 6970A
Hospital discharge: ICD-8 6970
Cause of death: ICD-10 L43
Cause of death: ICD-9 6970A
Cause of death: ICD-8 6970

2 out of 7 registries used, show all original rules.


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Check minimum number of events None


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Include endpoints None


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Remove individuals based on genotype QC


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Control definitions

Control exclude L12_PAPULOSQUAMOUS

Extra metadata

Level in the ICD hierarchy 3
First used in FinnGen datafreeze DF2
Parent code in ICD-10 L40-L45
Name in latin Lichen planus

Summary Statistics

Key figures

All Female Male
Number of individuals 3597 2363 1234
Unadjusted prevalence (%) 0.95 1.12 0.74
Mean age at first event (years) 56.99 57.34 56.32


Follow-up Absolute risk HR [95% CI] p N
1998–2019 0.03 1.58 [1.03, 2.42] 3.6e-2 253
15 years 0.01 1.09 [0.74, 1.62] 6.6e-1 130
5 years 0.00 1.45 [0.97, 2.16] 7.0e-2 51
1 year 0.00 2.52 [1.43, 4.45] 1.4e-3 16

Age distribution of first events

Year distribution of first events

Cumulative Incidence


Index endpoint: L12_LICHENPLANUS – Lichen planus
GWS hits: 4

Survival analyses between endpoints


before Lichen planus
after Lichen planus

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Drugs most likely to be purchased after Lichen planus

Endpoint not on priority list, no data to show.