Genomewide Scan for Linkage Reveals Evidence of Several Susceptibility Loci for Alopecia Areata

    Amalia Martı́nez-Mir, Abraham Zlotogorski, Derek Gordon, Lynn Petukhova, Jianhong Mo, T. Conrad Gilliam, Douglas Londoño, Chad Haynes, Jürg Ott, Maria Hordinsky, Krassimira Nanova, David A. Norris, Vera H. Price, Madeleine Duvic, Angela M. Christiano
    The study conducted a genomewide search for genetic linkage in 20 families with alopecia areata (AA), involving 102 affected and 118 unaffected individuals from the U.S. and Israel. It identified at least four susceptibility loci on chromosomes 6, 10, 16, and 18, with significant LOD scores on chromosomes 16 and 18. The findings supported previous associations of the human leukocyte antigen locus with AA and suggested that regions on chromosomes 16 and 18 might harbor genes involved in various skin and hair disorders. The study highlighted the complex genetic nature of AA, an autoimmune disorder affecting 1%-2% of the U.S. population, characterized by hair loss and psychological impact.
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