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  • Title: Linkage of epidermolytic hyperkeratosis to the type II keratin gene cluster on chromosome 12q.
    Author: Compton JG, DiGiovanna JJ, Santucci SK, Kearns KS, Amos CI, Abangan DL, Korge BP, McBride OW, Steinert PM, Bale SJ.
    Journal: Nat Genet; 1992 Jul; 1(4):301-5. PubMed ID: 1284546.
    Abstract:
    We investigated the molecular genetics of epidermolytic hyperkeratosis (EHK), a dominant disorder characterized by epidermal blistering, hyperkeratosis, vacuolar degeneration and clumping of keratin filaments. Based on this pathology, we have excluded by linkage analysis several candidate genes for the disease; in contrast, complete linkage was obtained with the type II keratin, K1, on 12q11-q13. Linkage in this region of chromosome 12 was confirmed using several other markers, and multi-locus linkage analyses further supported this location. Keratins are excellent EHK gene candidates since their expression is specific to the suprabasal epidermal layers. In the pedigree studied here, a type II keratin gene, very probably K1, is implicated as the site of the molecular defect causing EHK.
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