title: Alterations of the USP26 gene in Caucasian men.
abstract: The Ubiquitin Specific Protease 26 gene is a testis-specific gene that is located on the X chromosome. Sequence variants of this gene were previously reported in men with azoospermia caused by defects at the level of spermatogenesis. Especially a cluster of three changes (c.370_371insACA, c.494T>C and c.1423C>T) was frequently observed. To further define the role of this cluster of sequence variants in the USP26 gene, we have now analysed 202 control samples and 146 patients of Caucasian origin with cryptozoospermia or oligozoospermia. The detection method was based on a restriction reaction, by which the change c.494T>C can be detected. In none of the patients, the change c.494T>C was observed. Only in one man with normal spermatogenesis this sequence variant was detected. Sequencing can confirm the presence of the three changes of the USP26 gene. These data indicate that the cluster of changes is not restricted to men with severe testicular dysfunction.
authors.affiliation: Research Centre Reproduction and Genetics, Vrije Universiteit Brussel, Brussels, Belgium. katrien.stouffs@az.vub.ac.be
authors.forename: Katrien
authors.initials: K
authors.lastname: Stouffs
authors.forename: Willy
authors.initials: W
authors.lastname: Lissens
authors.forename: Herman
authors.initials: H
authors.lastname: Tournaye
authors.forename: André
authors.initials: A
authors.lastname: Van Steirteghem
authors.forename: Inge
authors.initials: I
authors.lastname: Liebaers
mesh_terms: D000595:Amino Acid Sequence; D016022:Case-Control Studies; D003546:Cysteine Endopeptidases / Q000235:genetics* / Q000502:physiology; D003596:Cytosine / Q000032:analysis; D004247:DNA / Q000032:analysis / Q000235:genetics*; D014644:Genetic Variation / Q000235:genetics; D006801:Humans; D007248:Infertility, Male / Q000209:etiology / Q000235:genetics / Q000503:physiopathology; D008297:Male; D008969:Molecular Sequence Data; D009845:Oligospermia / Q000209:etiology / Q000235:genetics* / Q000503:physiopathology; D017422:Sequence Analysis, DNA; D013941:Thymine / Q000032:analysis; D044465:White People / Q000235:genetics*
chemical_list: C501866:USP26 protein, human; D003596:Cytosine; D004247:DNA; D003546:Cysteine Endopeptidases; D013941:Thymine