Refined Genetic Mapping of the Darier Locus to a !1-cM Region of Chromosome 12q24.1, and Construction of a Complete, High-Resolution P1 Artificial Chromosome/Bacterial Artificial Chromosome Contig of the Critical Region

Anavaj Sakuntabhai, Sarah Monk, Simon A. Carter, Steven D. Bryce, Roger Cox, Louise Harrington, Elaine Levy, Victor L. Ruiz-Perez, Eleni Katsantoni, Ahmer Kodvawala, Colin S. Munro, Susan Burge, Marc Larrègue, Gyula Nagy, Jonathan L. Rees, Mark Lathrop, Anthony P. Monaco, Tom Strachan, Alain Hovnanian

    Research output: Contribution to journalArticlepeer-review

    Abstract

    Darier disease (DD) (MIM 124200) is an autosomal
    dominant skin disorder characterized by loss of adhesion
    between epidermal cells and by abnormal keratinization.
    We present linkage analysis showing, in four families,
    key recombination events that refine the location of the
    DD locus on chromosome 12q23-24.1 to a region of
    !1 cM. We have constructed a YAC/P1 artificial
    chromosome (PAC)/bacterial artificial chromosome
    (BAC)–based physical map that encompasses this refined
    DD region. The map consists of 35 YAC, 69 PAC, 16
    BAC, and 2 cosmid clones that were ordered by mapping
    54 anonymous sequence-tagged sites. The critical region
    is estimated to be 2.4 Mb in size, with an average marker
    resolution of 37.5 kb. The refinement of the critical interval
    excludes the ALDH2, RPL6, PTPN11, and OAS
    genes, as well as seven expressed sequence tags (ESTs)
    previously mapped in the DD region. The three known
    genes (ATP2A2, PPP1CC, and SCA2) and the 10 ESTs
    mapped within the critical region are not obvious candidates
    for the DD gene. Therefore, this detailed integrated
    physical, genetic, and partial transcript map provides
    an important resource for the isolation of the DD
    gene and, possibly, other disease genes.
    Original languageEnglish
    Pages (from-to)890-903
    JournalAmerican Journal of Human Genetics
    Volume62
    Issue number4
    DOIs
    Publication statusPublished - 22 Jan 1998

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