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Identification of constitutively activating mutation of the luteinising hormone receptor in a family with male limited gonadotrophin independent precocious puberty (testotoxicosis).
  1. N Kawate,
  2. G B Kletter,
  3. B E Wilson,
  4. M L Netzloff,
  5. K M Menon
  1. Department of Obstetrics/Gynecology, University of Michigan Medical Center, Ann Arbor, USA.

    Abstract

    A family of male limited gonadotrophin independent precocious puberty was examined for activating mutation of the LH receptor. A transition of A to G in nucleotide 1733 of the human LH receptor gene was identified in all affected males and in an unaffected carrier female. The mutation was shown by identifying a new restriction site created by the mutation. This mutation appears to be a common feature of the disorder, as it has been reported previously in unrelated families. Therefore, the presence of this new restriction site can serve as a diagnostic tool in males at risk before the onset of symptoms, as well as identifying carrier females.

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