TY - JOUR
T1 - Complex distal 10q rearrangement in a girl with mild intellectual disability
T2 - follow up of the patient and review of the literature of non-acrocentric satellited chromosomes
AU - Sarri, Catherine
AU - Douzgou, Sofia
AU - Gyftodimou, Yolanda
AU - Tümer, Zeynep
AU - Ravn, Kirstine
AU - Pasparaki, Angela
AU - Sarafidou, Theologia
AU - Kontos, Harry
AU - Kokotas, Haris
AU - Karadima, Georgia
AU - Grigoriadou, Maria
AU - Pandelia, Effie
AU - Theodorou, Virginia
AU - Moschonas, Nicholas K
AU - Petersen, Michael B
N1 - Copyright © 2011 Wiley Periodicals, Inc.
PY - 2011/11
Y1 - 2011/11
N2 - 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.
AB - 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.
KW - Adolescent
KW - Body Dysmorphic Disorders
KW - Centromere
KW - Chromosome Deletion
KW - Chromosome Disorders
KW - Chromosome Duplication
KW - Chromosomes, Human, Pair 10
KW - Chromosomes, Human, Y
KW - Comparative Genomic Hybridization
KW - Female
KW - Follow-Up Studies
KW - Humans
KW - In Situ Hybridization, Fluorescence
KW - Infant
KW - Inheritance Patterns
KW - Intellectual Disability
KW - Nucleolus Organizer Region
KW - Phenotype
KW - Prenatal Diagnosis
KW - Telomere
KW - Translocation, Genetic
U2 - 10.1002/ajmg.a.34259
DO - 10.1002/ajmg.a.34259
M3 - Journal article
C2 - 21964744
SN - 1552-4825
VL - 155A
SP - 2841
EP - 2854
JO - American Journal of Medical Genetics. Part A
JF - American Journal of Medical Genetics. Part A
IS - 11
ER -