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    Semin Reprod Med. 2001 Jun;19(2):133-9.

    X-Y translocations and sex differentiation.

    McElreavey K, Cortes LS.

    Source

    Institut Pasteur, Immunogénétique Humaine, INSERM E0021, Paris, France.

    Abstract

    Translocations involving the X and Y chromosomes are often associated with anomalies of gonadal development. Transfer of Yp sequences, including the testis-determining SRY gene, to the terminal portion of the short arm of the X chromosome is associated with 46,XX maleness and in rare cases 46,XX true hermaphroditism. Three classes of XX males have been defined on the basis of the extent of Y material transferred to the X chromosome. In one class, the transfer of material involves aberrant recombination between two highly homologous genes, PKRX and PKRY, and there is evidence to suggest that this interchange is influenced by the Y chromosome background. Other types of X-Y translocations associated with anomalies of sex differentiation include Xp-Yq translocations, which result in a functional disomy of Xp sequences including the DSS locus and are associated with 46,XY complete or partial gonadal dysgenesis. In rare cases Yp-Xq translocations have been described in association with 46,XX maleness.

    PMID:
    11480910
    [PubMed - indexed for MEDLINE]

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