Haplotype analysis encompassing HTT gene in Chinese patients with Huntington's disease.

Li, X-Y; Li, H-L; Dong, Y; Gao, B; Cheng, H-R; Ni, W; Gan, S-R; Liu, Z-J; Burgunder, Jean-Marc; Wu, Z-Y (2020). Haplotype analysis encompassing HTT gene in Chinese patients with Huntington's disease. European journal of neurology, 27(2), pp. 273-279. Wiley 10.1111/ene.14072

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BACKGROUND AND PURPOSE Huntington's disease (HD) is a dominantly inherited neurodegenerative disorder with varied prevalence in different populations, which may be associated with specific haplotypes. This study aimed to explore the haplotypes encompassing the HTT gene in the Chinese population. METHODS A total of 406 individuals with HD and 59 normal relatives from 253 families with HD were enrolled. A total of 29 tag single nucleotide polymorphisms (tSNPs) were selected and genotyped for the haplotype analysis. RESULTS In stage one, we used 18 tSNPs to replicate the distribution of three major haplogroups (A, B, C). We found that risk-associated haplogroup variants A1 and A2, enriched on Caucasian HD chromosomes, were totally absent from both Chinese HD and control chromosomes, and the distributions of haplogroups between HD and control chromosomes were similar. Therefore, in stage two, we used 29 tSNPs (including the18 tSNPs) to define new haplogroups (I, II, III) and found that haplogroup I accounted for 61.4% on HD chromosomes and 34.4% on control chromosomes, indicating that haplogroup I was enriched on Chinese HD chromosomes. CONCLUSIONS This is the first haplotype analysis encompassing HTT in the Chinese population. The results contribute to explaining the low prevalence of HD in China and provide a better understanding of genetic diversity in the HTT region.

Item Type:

Journal Article (Original Article)

Division/Institute:

04 Faculty of Medicine > Department of Head Organs and Neurology (DKNS) > Clinic of Neurology

UniBE Contributor:

Burgunder, Jean-Marc

Subjects:

600 Technology > 610 Medicine & health

ISSN:

1468-1331

Publisher:

Wiley

Language:

English

Submitter:

Chantal Kottler

Date Deposited:

26 Nov 2019 10:16

Last Modified:

09 Jan 2020 01:32

Publisher DOI:

10.1111/ene.14072

PubMed ID:

31444920

Uncontrolled Keywords:

Chinese population Huntington's disease haplotype analysis

BORIS DOI:

10.7892/boris.134868

URI:

https://boris.unibe.ch/id/eprint/134868

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