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Original Article
Neurology
Genotype-phenotype correlations in pediatric patients with myotonic dystrophy type 1
Hyeong Jung Kim, Ji-Hoon Na, Young-Mock Lee
Clin Exp Pediatr. 2019;62(2):55-61.   Published online September 23, 2018

Purpose: Myotonic dystrophy, also known as dystrophia myotonica (DM), is an autosomal dominant disorder with 2 genetically distinct forms. DM type 1 (DM1) is the more common form and is caused by abnormal expansion of cytosine/thymine/guanine (CTG) repeats in the DM protein kinase (DMPK ) gene. Our study aimed to determine whether the age of onset is correlated with CTG...
Case Report
A case of Becker muscular dystrophy with early manifestation of cardiomyopathy
Ki Hyun Doo, Hye Won Ryu, Seung Soo Kim, Byung Chan Lim, Hui Hwang, Ki Joong Kim, Yong Seung Hwang, Jong-Hee Chae
Clin Exp Pediatr. 2012;55(9):350-353.   Published online September 14, 2012

An 18-year-old boy was admitted with chest discomfort, nausea, and dyspnea at rest. At the age of 3 years, he underwent muscle biopsy and dystrophin gene analysis owing to an enlarged calf muscle and elevated serum kinase level (6,378 U/L) without overt weakness; based on the results, Becker muscular dystrophy (BMD) was diagnosed. The dystrophin gene showed deletion of exons...

Original Article
A study of the relationship between clinical phenotypes and plasma iduronate-2-sulfatase enzyme activities in Hunter syndrome patients
Ok Jeong Lee, Su-Jin Kim, Young Bae Sohn, Hyung-Doo Park, Soo-Youn Lee, Chi-Hwa Kim, Ah-Ra Ko, Yeon-Joo Yook, Su-Jin Lee, Sung Won Park, Se-Hwa Kim, Sung-Yoon Cho, Eun-Kyung Kwon, Sun Ju Han, Dong-Kyu Jin
Clin Exp Pediatr. 2012;55(3):88-92.   Published online March 16, 2012
Purpose

Mucopolysaccharidosis type II (MPS II or Hunter syndrome) is a rare lysosomal storage disorder caused by iduronate-2-sulfatase (IDS) deficiency. MPS II causes a wide phenotypic spectrum of symptoms ranging from mild to severe. IDS activity, which is measured in leukocyte pellets or fibroblasts, was reported to be related to clinical phenotype by Sukegawa-Hayasaka et al. Measurement of residual plasma IDS...

Phenotype-genotype correlations and the efficacy of growth hormone treatment in Korean children with Prader-Willi syndrome
Keun Wook Bae, Jung Min Ko, Han-Wook Yoo
Clin Exp Pediatr. 2008;51(3):315-322.   Published online March 15, 2008
Purpose : Prader-Willi syndrome (PWS) is a complex genetic disorder, caused by the deletion of the paternally derived 15q11-13 region or the maternal uniparental disomy of chromosome 15 (mUPD(15)). In this study, we compared phenotypic differences between those patients whose disease was caused by microdeletion and those caused by mUPD(15). In addition, a comparison of the efficacy of growth hormone...
Characterization of Molecular Defects in Korean Families with Inherited Ornithine Transcarbamylase Deficiency and Their Genotype-Phenotype Correlations
Han-Wook Yoo
Clin Exp Pediatr. 1999;42(7):900-910.   Published online July 15, 1999
Purpose : This study was undertaken to characterize molecular defects in Korean families with ornithine transcarbamylase(OTC) deficiency, correlate it with phenotype using in vitro expression study, and utilize it for making prenatal molecular diagnosis. Methods : To investigate molecular lesions resulting in OTC deficiency in 15 unrelated Korean families, the OTC genes of probands were amplified exon by exon and analyzed...