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Article

Optineurin mutations in patients with sporadic amyotrophic lateral sclerosis in China

, , , , , , & show all
Pages 485-489 | Received 25 May 2015, Accepted 26 Jul 2015, Published online: 26 Oct 2015
 

Abstract

The purpose of this study was to assess the frequency of optineurin (OPTN) mutation in amyotrophic lateral sclerosis (ALS) patients from mainland China, as well as to characterize the relationship between OPTN mutation and clinical phenotypes. We examined the coding region of OPTN in 511 unrelated Chinese sporadic ALS (SALS) subjects and 204 healthy controls using a PCR direct sequencing strategy. Nine OPTN variants were identified, of which four were novel missense mutations: c.407C > T (p.A136V), c.1184A > G (p.K395R), c.1352T > C (p.I451T), and c.1546G > C (p.E516Q) (all heterozygous). The remaining five variants were already present in single nucleotide polymorphism databases. Patients with OPTN mutations were characterized by spinal onset, although they showed differences in disease progression. In conclusion, this study provides a genetic epidemiological characterization of OPTN mutations in Chinese patients, and our results are consistent with the proposition that such mutations are common in Asian populations.

Declaration of interest

The authors report no conflicts of interest.

Supplementary material Supplemental table 1 is available online at http://dx.doi.org/10.3109/21678421.2015.1089909

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