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한국인 좌심실 비대증 환자들에서 파브리병 선별검사의 의의  

Park, Hyeong-Du (성균관의대 삼성서울병원 진단검사의학과)
Jo, Seong-Yun (성균관의대 삼성서울병원 소아청소년과)
Lee, Su-Yeon (성균관의대 삼성서울병원 진단검사의학과)
Jeon, Eun-Seok (성균관의대 삼성서울병원 내과)
Park, Seung-U (성균관의대 삼성서울병원 내과)
Lee, Sang-Hun (성균관의대 삼성서울병원 내과)
Lee, Sang-Cheol (성균관의대 삼성서울병원 내과)
Choe, Jin-O (성균관의대 삼성서울병원 내과)
Park, Seong-Ji (성균관의대 삼성서울병원 내과)
Jang, Seong-A (성균관의대 삼성서울병원 내과)
Kim, Hyeong-Gwan (서울대학교병원 내과)
Gi, Chang-Seok (성균관의대 삼성서울병원 진단검사의학과)
Kim, Jong-Won (성균관의대 삼성서울병원 진단검사의학과)
Jin, Dong-Gyu (성균관의대 삼성서울병원 소아청소년과)
Publication Information
Journal of The Korean Society of Inherited Metabolic disease / v.14, no.2, 2014 , pp. 135-141 More about this Journal
Abstract
Objectives: Fabry disease (FD) is a lysosomal storage disease caused by the inappropriate accumulation of globotriaosylceramide (Gb3) in tissues due to a deficiency in the enzyme ${\alpha}$-galactosidase A. Hypertrophic cardiomyopathy is one of the chronic complications of FD. We tried to evaluate the prevalence of Fabry disease in the Korean patients with left ventricular hypertrophy (LVH). Methods: A total of 257 patients with LVH were recruited and they were 172 males (mean 56 years, range 30-81 years) and 84 females (mean 66 years, range 45-85 years). Urinary Gb3 was used to screen FD by high performance liquid chromatography-tandem mass spectrometry. Confirmatory tests were done by alpha-galactosidaseA activity using fluorometric assay and by GLA mutation analysis using sequencing. Results: Four patients were screening positive by urinary Gb3 analysis (cutoff, 25 ug/mmol creatinine). But, one female patient was diagnosed with FD confirmed by enzyme analysis in leukocytes as well as by genetic analysis (1/257 patients, 0.4%). She showed 54.3 ug/mmoL creatinine of Gb3 and 15.5 nmole/hr/mg protein (reference range, $55.2{\pm}12.7nmole/hr/mg$ protein) of alphagalactosidase A activity. And she had a heterozygous GLA mutation of c.796G>A (p.D266N). Her daughter was found to be a carrier for FD confirmed by GLA mutation analysis. Asymptomatic carrier showed 25.5ug/mmol creatinine of Gb3 and 42.5 nmole/hr/mg protein (reference range, $55.2{\pm}12.7nmole/hr/mg$ protein) of alpha-galactosidase A activity. Conclusions: The prevalence of FD in Koran patients with LVH was detected as 0.4%. Although the prevalence seems to be low, screening studies are of great importance for detecting hidden cases as well as for identifying other effected family members.
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