All issues > Volume 48(7); 2005

Original Article

Korean J Pediatr. 2005;48(7):701-705. Published online July 15, 2005.

Clinical and Cytogenetic Analysis of Children with Maternal Chromosomal Balanced Translocation

Han Hyuk HH Lim¹, Hee Jeong HJ Jeong¹, Kyung Duk KD Park¹, Sook Ja SJ Kim²

¹Department of Pediatrics, College of Medicine, Chungnam National University, Daejon, Korea
²South Korea and Korea Genetic Research Center, Korea

Correspondence Kyung Duk KD Park ,Email: kdpark@cnuh.co.kr

Abstract

Purpose
: Parents' genetic information plays an important role in their children's genetic expression. Human chromosome has 23-paternal chromosomes and 23-maternal chromosomes. Parental chromosomal translocation can induce clinical problems in their children because of imbalance in genetic information. We intent to analyze the cytogenentic and clinical features about children with maternal balanced translocation between chromosome 15 and 18.
Methods
: We detected by one family's FISH study of chromosome 15. We have evaluated children born to clinically normal parents about peripheral bood analysis, endocrine, metabolic, radiologic study, electroencephalogram and social & intelligence scale. and We analysis their clinical manifestation by hospital records.
Results
: Patient's father and elder sister are normal clinically and genetically. Her mother's chromosome show balanced translocation, 46, XX, t(15;18)(p11.2;p11.3). One child has 46, XX, der(18) t(15;18)(p11.2;p11.3), mental retardation, growth retardation, speech & social developmental delay, recurrent infection and mild mitochondria dysfunction. Her young brother has 46, XY, der(15) t(15;18) (p11.2;p11.3), mental retardation, aggressive behavior, obesity and speech developmental delay.
Conclusion
: In this study we observed the children with developmental delay, dysmorphic facial features, mental retardation, growth retardation associated with growth hormone deficiency and aggressive behavior due to unbalanced translocation between chromosome 15 and 18.

Keywords :Balanced translocation , Chromosome 15 , Chromosome 18