Molecular and Genetic Medicine

Specialties Hospital FF. AA No 1, Medical Genetic Services, Gran Colombia and Queseras del Medio av. No.521, Quito-170403, Ecuador

Publications

• Case Report   
  Supernumerary Marker of Chromosome 15 Associated with Paternal Uniparental Disomy in a Case with Angelman Syndrome
  Author(s): LLamos-Paneque A*, Recalde-Baez MA, Garzón-Castro M, Montúfar S, Rivas-Iglesias C, Lamar-Segura E, Román-Naranjo M, Tambaco- Jijón N, Hernández-Iñiguez P, Mrasek K, Liehr T and Odales-Ibarra R
  
  Angelman syndrome is a rare neurogenetic disorder that usually is clinically associated with global developmental delay including absence of speech, seizures, ataxic gait and frequent smiling. Its genetic bases is complex even though normally it may be attributed to epigenetic alterations of chromosomal region 15q11.2~13. We present a girl of 7 years who was referred with delayed neurological development, speech impairment, and some minor facial anomalies, such as microcephaly and open mouth. Clinical symptoms suggested the diagnosis of Angelman syndrome. Cytogenetic results showed a karyotype 47,XX,+ mar in all 30 analyzed metaphases. Fluorescence in situ hybridization studies revealed origin and size of the small supernumerary marker chromosome as an inv dup(15)(q11.1) not including any euchromatin. Microsatellite analyses revealed that both chromoso.. Read More»
  

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