High resolution melting analysis for the detection of SLC25A13 gene mutations in Taiwan

Jing Ting Lin, Kwang Jen Hsiao, Chiung Yu Chen, Cheng Chung Wu, Shio Jean Lin, Yen Yin Chou, Shu Chu Shiesh

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12 Citations (Scopus)

Abstract

Background: Citrin, encoded by SLC25A13 gene, is a mitochondrial solute transporter with a crucial role in urea, nucleotide and protein synthesis. SLC25A13 mutations cause two phenotypes, adult-onset type II citrullinemia and neonatal intrahepatic cholestasis caused by citrin deficiency (NICCD). This study aimed to develop a high resolution melting (HRM) analysis for SLC25A13 mutation scanning and determine the carrier rate in Taiwan. Methods: DNAs from healthy subjects (n = 479), and patients with hepatocellular carcinoma (HCC, n = 100) and NICCD (n = 5) were scanned in exons 6, 9, 11, 16, and 17 and parts of introns of SLC25A13 using HRM analysis. All mutations detected by HRM analysis were further confirmed by TaqMan method and/or direct sequencing. Results: In healthy subjects, seventeen carriers with mutants c.851_854del (n = 10), c.1638_1660dup, c.615. +. 5G > A (n = 4), and two novel mutants, c.475C > T and c.1658G > A, were detected. The frequency of carriers was about 1/28. In patients with HCC, there were only 2 carriers with c.851_854del mutant. Patients with NICCD (n = 5) diagnosed during 2007 and 2008, harbored compound heterozygous mutations c.851_854del/c.1177. +. 1G > A, c.851_854del/c.1638_1660dup (n = 2), c.851_854del/c.615. +. 5G > A, and c.1638_1660dup/c.615. +. 5G > A. Conclusions: HRM analysis is a simple, rapid and robust method for detecting SLC25A13 mutations in clinical laboratories. SLC25A13 mutations may not be a major contributor to the pathogenesis of HCC in Taiwan.

Original languageEnglish
Pages (from-to)460-465
Number of pages6
JournalClinica Chimica Acta
Volume412
Issue number5-6
DOIs
Publication statusPublished - 2011 Feb 20

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All Science Journal Classification (ASJC) codes

  • Biochemistry
  • Clinical Biochemistry
  • Biochemistry, medical

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