Complex distal 10q rearrangement in a girl with mild intellectual disability: follow up of the patient and review of the literature of non-acrocentric satellited chromosomes

Catherine Sarri, Sofia Douzgou, Yolanda Gyftodimou, Zeynep Tümer, Kirstine Ravn, Angela Pasparaki, Theologia Sarafidou, Harry Kontos, Haris Kokotas, Georgia Karadima, Maria Grigoriadou, Effie Pandelia, Virginia Theodorou, Nicholas K Moschonas, Michael B Petersen

9 Citations (Scopus)

Abstract

We report on an intellectually disabled girl with a de novo satellited chromosome 10 (10qs) and performed a review of the literature of the non-acrocentric satellited chromosomes (NASC). Satellites and stalks normally occur on the short arms of acrocentric chromosomes; however, the literature cites several reports of satellited non-acrocentric chromosomes, which presumably result from a translocation with an acrocentric chromosome. This is, to our knowledge, the third report of a 10qs chromosome. The phenotype observed in the proband prompted a search for a structural rearrangement of chromosome 10q. By microsatellite analysis we observed a 4 Mb deletion on the long arm of chromosome 10, approximately 145 kb from the telomere. FISH and array CGH analyses revealed a complex rearrangement involving in range from the centromere to the telomere: A 9.64 Mb 10q26.11-q26.2 duplication, a 1.3 Mb region with no copy number change, followed by a 5.62 Mb 10q26.2-q26.3 deletion and a translocation of satellite material. The homology between the repeat sequences at 10q subtelomere region and the sequences on the acrocentric short arms may explain the origin of the rearrangement and it is likely that the submicroscopic microdeletion and microduplication are responsible for the abnormal phenotype in our patient. The patient presented here, with a 15-year follow-up, manifests a distinct phenotype different from the 10q26 pure distal monosomy and trisomy syndromes.
Original languageEnglish
JournalAmerican Journal of Medical Genetics. Part A
Volume155A
Issue number11
Pages (from-to)2841-54
Number of pages14
ISSN1552-4825
DOIs
Publication statusPublished - Nov 2011

Keywords

  • Adolescent
  • Body Dysmorphic Disorders
  • Centromere
  • Chromosome Deletion
  • Chromosome Disorders
  • Chromosome Duplication
  • Chromosomes, Human, Pair 10
  • Chromosomes, Human, Y
  • Comparative Genomic Hybridization
  • Female
  • Follow-Up Studies
  • Humans
  • In Situ Hybridization, Fluorescence
  • Infant
  • Inheritance Patterns
  • Intellectual Disability
  • Nucleolus Organizer Region
  • Phenotype
  • Prenatal Diagnosis
  • Telomere
  • Translocation, Genetic

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