Clinical and Cytogenomic Characterization of De Novo 11p14.3-p15.5 Duplication Associated with 18q23 Deletion in an Egyptian Female Infant.
Hanan H AfifiGhada Y El-KamahAlaa K KamelSally G Abd AllahSayda HammadMohammed M Sayed-AhmedShymaa H HusseinAmal M MohamedPublished in: Journal of pediatric genetics (2020)
Paternal microduplication of 11p14.3-p15.5 causes the clinical manifestations of Beckwith-Wiedemann syndrome (BWS), while microdeletion of 18q23-ter is clinically characterized by short stature, congenital malformations, and developmental delay. We describe a 15-month-old girl presenting with protruding tongue, dysmorphic facial features, moderate developmental delay, umbilical hernia, hypotonia, mild-to-moderate pulmonary hypertension, small patent ductus arteriosus, and mild ventricular septal hypertrophy. Brain magnetic resonance imaging showed mild atrophic changes. Chromosomal analysis revealed 46, XX, add(18)(q23). Fluorescence in situ hybridization using subtelomere 18q and whole chromosome painting 18 showed subtelomere deletion in 18q, and the add segment was not derived from chromosome 18. Microarray-based comparative genomic hybridization detected a 22 Mb duplication of chromosome 11p15.5p14.3 and a 3.7 Mb deletion of chromosome 18q23. The phenotype of the chromosomal rearrangements is probably resulted from a combination of dosage-sensitive genes. Our patient had clinical manifestations of both 18q deletion and BWS.
Keyphrases
- copy number
- magnetic resonance imaging
- genome wide
- case report
- pulmonary hypertension
- single molecule
- dna methylation
- computed tomography
- heart failure
- left ventricular
- pulmonary arterial hypertension
- pulmonary artery
- high intensity
- magnetic resonance
- coronary artery
- bioinformatics analysis
- contrast enhanced
- hypertrophic cardiomyopathy
- energy transfer
- transcription factor
- data analysis