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    • Keywords


      Down’s syndrome; triple X syndrome; double trisomy; developmental delay

    • Abstract


      We describe a case of a six-year-old girl who presents multiple dysmorphic features characteristic of Down’s syndrome. She has a significant general developmental delay, with a score that correspond to 32 months of developmental age. This delay is especially in language, with a very scant vocabulary. She communicates with some hand sign words or pointing, although her auditoryresponses in hearing test were normal. Two previous karyotype studies showed 47, XXX, +21 anomalies. This double trisomy is a rare condition described in isolated cases in the literature and none of these refers to the developmental aspects of these children (Balwan et al. 2008; Li et al. 2004; Park et al. 1995; Day et al. 1963).

    • Author Affiliations



      1. Neuroscience research group (Neuros), School of Medicine and Health Sciences, Universidad del Rosario, Bogotá 111221, Colombia
    • Dates

  • Journal of Genetics | News

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      Posted on July 25, 2019

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