a further case of a prader-willi syndrome phenotype in a patient with angelman syndrome molecular defect

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2002
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Abstract
Angelman syndrome (AS) and Prader-Willi syndrome (PWS) are distinct human neurogenetic disorders; however, a clinical overlap between AS and PWS has been identified. We report on a further case of a patient showing the PWS phenotype with the AS molecular defect. Despite the PWS phenotype, the DNA methylation analysis of SNRPN revealed an AS pattern. Cytogenetic and FISH analysis showed normal chromosomes 15 and microsatellite analysis showed heterozygous loci inside and outside the 15q11-13 region. The presence of these atypical cases could be more frequent than previously expected and we reinforce that the DNA methylation analysis is important for the correct diagnosis of severe mental deficiency, congenital hypotonia and obesity.
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Authors ;De Molfetta Greice Andreotti;Felix Temis Maria;Riegel Mariluce;Ferraz Victor Evangelista de Faria;Pina Neto João Monteiro de
Journal communications in computer and information science
Year 2002
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