Determining the Effect of the HNMT , STK39 , and NMD3 Polymorphisms on the Incidence of Parkinson ’s Disease, Amyotrophic Lateral Sclerosis, and Multiple System Atrophy in Chinese Populations

AbstractLarge-scale meta-analyses of genome-wide association studies have identified several loci linked to sporadic Parkinson ’s disease (PD). However, the roles of some important loci, such asHNMT Thr105Ile,STK39 rs2390669, andNMD3 rs34016896, have not been clarified in Chinese populations. Accumulating evidence indicates that some common clinicopathological characteristics are shared by different neurodegenerative diseases. Consequently, we conducted a large sample study to investigate associations between these variants and PD, multiple system atrophy (MSA), and amyotrophic lateral sclerosis (ALS) in Chinese populations. A total of 2417 patients, including 1237 PD, 850 SALS, and 330 MSA patients, along with 836 healthy controls (HCs) were examined in this study. All patients were genotyped for SNPs using the Sequenom iPLEX assay. No significant differences were found in the genotype and allele frequency distributions between the three neurodegenerative diseases and three candidate variants investigated. In subgroup analysis, compared with PD patients with initial symptom of tremor and HCs, the minor allele frequency ofNMD3 rs34016896 in PD patients with initial symptoms of rigidity/bradykinesia was significantly lower. In addition, female patients carrying the rs34016896 minor allele had an increased risk of developing MSA (OR 1.25, 95% CI [1.09 –1.43]), and ALS patients carrying the Ile105 polymorphism on the Thr105Ile allele in theHNMT gene exhibited a trend toward ...
Source: Journal of Molecular Neuroscience - Category: Neuroscience Source Type: research