03Sep 2021
Evidence of gene‐gene interaction in Hidradenitis suppurativa – A nationwide register study of Danish twins

Evidence of gene‐gene interaction in Hidradenitis suppurativa – A nationwide register study of Danish twins

Hidradenitis suppurativa (HS) is a recurrent inflammatory skin disease that, apart from rare causative loss‐of‐function mutations, has a widely unknown genetic aetiology. Genetics account for the majority of the HS susceptibility, and HS is most likely caused by gene‐gene interactions rather than monogenetic mutations or solely additive genetic factors. HS cases were identified by International Code of Diseases 8 (705.91) and 10 (L73.2). Heritability was assessed by the classic biometric model and the possibility of gene‐gene interaction through the multi‐locus modeling approach. The seven concordant pairs were all monozygotic, and monozygotic twins had a casewise concordance rate of 28% (95% CI: 7%; 49%), corresponding to a familial risk of 73 (95% CI 13; 133) times that of the background population.

  • #dermatology

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