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Targeted Next-generation Sequencing and Bioinformatics Pipeline to Evaluate Genetic Determinants of Constitutional Disease
Published on: April 4, 2018
ARSA gene mutations in five Chinese metachromatic leukodystrophy patients
Jingmin Wang1, Weimin Zhang, Hong Pan
1Department of Pediatrics, Peking University First Hospital, Beijing, China.
Pediatric Neurology
|June 15, 2007
Summary
This study identified six arylsulfatase A gene mutations in five Chinese patients with metachromatic leukodystrophy, including two novel mutations. This research provides crucial genetic insights for metachromatic leukodystrophy in China.
Area of Science:
- Genetics
- Molecular Biology
- Neurology
Background:
- Metachromatic leukodystrophy (MLD) is a rare genetic disorder.
- Arylsulfatase A (ARSA) gene mutations cause MLD.
- Genetic studies of MLD in China are limited.
Purpose of the Study:
- To identify arylsulfatase A (ARSA) gene mutations in Chinese patients with MLD.
- To characterize novel and known ARSA mutations.
- To establish the first genetic mutation database for MLD in China.
Main Methods:
- Polymerase chain reaction (PCR) amplification of all eight exons and exon-intron boundaries of the ARSA gene.
- Direct DNA sequencing of amplified ARSA gene regions.
- Analysis of mutation types, including homozygous, compound heterozygous, missense, nonsense, and frameshift mutations.
Main Results:
- Six DNA variants in the ARSA gene were identified in five Chinese MLD patients.
- Two novel frameshift mutations (c.179_180dupCA and c.1338dupC) were discovered.
- One known nonsense mutation (p.W318X) and three known missense mutations (p.R84Q, p.G99V, and p.R288C) were identified.
Conclusions:
- The study identified a spectrum of ARSA mutations in Chinese MLD patients.
- Genetic characterization of these mutations advances understanding of MLD.
- This research provides a foundation for future genetic diagnostics and therapeutic strategies for MLD in China.
