Dominantly inherited cutaneous small-vessel lymphocytic vasculitis maps to chromosome 6q26-q27.

Sellick, GS; Coleman, RJ; Webb, EL; Chow, J; Bevan, S; Rosbotham, JL; Houlston, RS; (2005) Dominantly inherited cutaneous small-vessel lymphocytic vasculitis maps to chromosome 6q26-q27. Human genetics, 118 (1). pp. 82-6. ISSN 0340-6717 DOI:

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Outside the context of hereditary deficiencies of complement and IgA, Mendelian inherited predisposition to small vessel lymphocytic vasculitis (SVLV) has rarely been documented. Here we report a large, multigenerational family segregating symmetrical cutaneous SVLV affecting the cheeks, thighs and hands. In all affected family members the disease presented in early infancy and there was no evidence for an association with systemic disease. Skin biopsy of lesions showed a lymphocytic vasculitis with red blood cell extravasation. Complementary studies, with extensive investigation focused on dysfunction of the immunological system were negative. The pattern of inheritance of SVLV in the family was compatible with an autosomal dominantly acting disease gene with incomplete penetrance. To localize the disease causing gene in the family a genome-wide linkage search was conducted using a high-density SNP array. Haplotype construction and analysis of recombination events permitted the minimal interval defining the disease locus to be refined to a 4.7 Mb region on chromosome 6q26-q27. The genes CCR6 and GPR31, which map to the linked region represent plausible candidates for the disease on the basis of their biological function. Extensive screening of both genes by mutational analysis failed to identify a deleterious mutation in the family.

Item Type: Article
Faculty and Department: Faculty of Epidemiology and Population Health > Dept of Infectious Disease Epidemiology
PubMed ID: 16133183
Web of Science ID: 233338100011


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