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The European Journal of Psychiatry

versión impresa ISSN 0213-6163

Resumen

VANDERSTEEN, Anthony M. et al. Genetic diagnosis in clinical psychiatry: A case report of a woman with a 47, XXX karyotype and Fragile X syndrome. Eur. J. Psychiat. [online]. 2009, vol.23, n.1, pp.31-36. ISSN 0213-6163.

Background and Objectives: A recent report highlighted the importance of considering a chromosomal abnormality in the differential diagnosis of adult clinical psychiatry. This case report illustrates the importance of considering Fragile X syndrome, an X-linked genetic disorder associated with psychiatric morbidities. Methods: A 45 years old woman was referred to the clinical genetics department by her psychiatrist for investigation of her gross obesity, hyperphagia, learning difficulties and affective disorder. Results: Cytogenetic analysis revealed a 47,XXX karyotype. Molecular testing identified an expansion of approximately 580 repeats in the FRAXA gene carried on two of her three copies of the X chromosome. Clinical evaluation revealed features consistent with the Prader-Willi like phenotype of Fragile X syndrome. Conclusions: It is important to consider molecular and cytogenetic testing in patients with dysmorphic features, complex neuro-behavioural profile and/or psychotic disorders in order to establish a causative diagnosis, provide adequate counselling and initiate cascade screening where applicable.

Palabras clave : Fragile X; 47,XXX; obesity; hyperphagia; affective disorder.

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