Coarctation of the aorta and mild to moderate developmental delay in a child with a de novo deletion of chromosome 15(q21.1q22.2).
BACKGROUND
Deletion of 15q21q22 is a rare chromosomal anomaly. To date, there have been nine reports describing ten individuals with different segmental losses involving 15q21 and 15q22. Many of these individuals have common features of growth retardation, hypotonia and moderate to severe mental retardation. Congenital heart disease has been described in three individuals with interstitial deletion involving this region of chromosome 15.


METHODS
We report a child with coarctation of the aorta, partial agenesis of corpus callosum and mild to moderate developmental delay, with a de novo deletion of 15q21.1q22.2, detected by the array Comparative Genomic Hybridization (CGH). We utilized chromosome 15-specific microarray-based CGH to define the chromosomal breakpoints in this patient.


CONCLUSIONS
This is the first description of mapping of an interstitial deletion involving the chromosome 15q21q22 segment using the chromosome 15-specific array-CGH. The report also expands the spectrum of clinical phenotype associated with 15q21q22 deletion.
Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas, USA. seemal@bcm.tmc.edu
Seema R
SR
Lalani
Trilochan
T
Sahoo
Merideth E
ME
Sanders
Sarika U
SU
Peters
Bassem A
BA
Bejjani
D001017:Aortic Coarctation / Q000235:genetics*; D002675:Child, Preschool; D002872:Chromosome Deletion; D002884:Chromosomes, Human, Pair 15; D020732:Cytogenetic Analysis; D002658:Developmental Disabilities / Q000175:diagnosis* / Q000235:genetics*; D019066:Facies; D006801:Humans; D017404:In Situ Hybridization, Fluorescence; D008297:Male; D009693:Nucleic Acid Hybridization