MEF2C-Related 5q14.3 Microdeletion Syndrome Detected by Array CGH: A Case Report
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Genetic screening is being widely applied to trace the origin of global developmental delay or intellectual disability. The 5q14.3 microdeletion has recently been uncovered as a clinical syndrome presenting with severe intellectual disability, limited walking ability, febrile convulsions, absence of speech, and minor brain malformations. MEF2C was suggested as a gene mainly responsible for the 5q14.3 microdeletion syndrome. We present the case of a 6-year-old girl, who is the first patient in Korea with de novo interstitial microdeletions involving 5q14.3, showing the typical clinical features of 5q14.3 microdeletion syndrome with a smaller size of chromosomal involvement compared to the previous reports. The microdeletion was not detected by subtelomeric multiplex ligation-dependent probe amplification, but by array comparative genomic hybridization, which is advisable for the detection of a small-sized genetic abnormality.
Abstract
Genetic screening is being widely applied to trace the origin of global developmental delay or intellectual disability. The 5q14.3 microdeletion has recently been uncovered as a clinical syndrome presenting with severe intellectual disability, limited walking ability, febrile convulsions, absence of speech, and minor brain malformations. MEF2C was suggested as a gene mainly responsible for the 5q14.3 microdeletion syndrome. We present the case of a 6-year-old girl, who is the first patient in Korea with de novo interstitial microdeletions involving 5q14.3, showing the typical clinical features of 5q14.3 microdeletion syndrome with a smaller size of chromosomal involvement compared to the previous reports. The microdeletion was not detected by subtelomeric multiplex ligation-dependent probe amplification, but by array comparative genomic hybridization, which is advisable for the detection of a small-sized genetic abnormality.
참고문헌 (11)
- Hunter AG., "Outcome of the routine assessment of patients with mental retardation in a genetics clinic", Am J Med Genet, 90, pp.60~68 (2000)
- Szabo GP, "Detection of subtelomeric chromosomal rearrangements in idiopathic mental retardation", Orv Hetil, 151, pp.1091~1098 (2010)
- Engels H, "A novel microdeletion syndrome involving 5q14.3-q15: clinical and molecular cytogenetic characterization of three patients", Eur J Hum Genet, 17, pp.1592~1599 (2009)
- Zweier M, "Mutations in MEF2C from the 5q14.3q15 microdeletion syndrome region are a frequent cause of severe mental retardation and diminish MECP2 and CDKL5 expression", Hum Mutat, 31, pp.722~733 (2010)
- Potthoff MJ, "MEF2: a central regulator of diverse developmental programs", Development, 134, pp.4131~4140 (2007)
- Shimojima K, "De novo microdeletion of 5q14.3 excluding MEF2C in a patient with infantile spasms, microcephaly, and agenesis of the corpus callosum", Am J Med Genet A, 158A, pp.2272~2276 (2012)
- Nowakowska BA, "Severe mental retardation, seizures, and hypotonia due to deletions of MEF2C", Am J Med Genet B Neuropsychiatr Genet, 153B, pp.1042~1051 (2010)
- Novara F, "Refining the phenotype associated with MEF2C haploinsufficiency", Clin Genet, 78, pp.471~477 (2010)
- Saitsu H, "De novo 5q14.3 translocation 121.5-kb upstream of MEF2C in a patient with severe intellectual disability and early-onset epileptic encephalopathy", Am J Med Genet A, 155A, pp.2879~2884 (2011)
- Lee C, "Copy number variations and clinical cytogenetic diagnosis of constitutional disorders", Nat Genet, 39(7 Suppl), pp.S48~S54 (2007)
- Miller DT, "Consensus statement: chromosomal microarray is a first-tier clinical diagnostic test for individuals with developmental disabilities or congenital anomalies", Am J Hum Genet, 86, pp.749~764 (2010)
