Influence of NRGN rs12807809 polymorphism on symptom severity in individuals with schizophrenia in the Han population but not the Zhuang population of south China.
BACKGROUND
NRGN is one of the most promising candidate genes for schizophrenia based on function and position. Therefore, this study aimed to examine the genetic association of this polymorphism with schizophrenia in the Zhuang and Han populations of south China. Subjects and methods A total of 282 patients (188 Han and 94 Zhuang) and 282 healthy subjects (188 Han and 94 Zhuang) were recruited. Of these, 246 schizophrenia patients underwent an assessment of psychotic symptoms using the Positive and Negative Syndrome Scale (PANSS). A TaqMan genotyping assay method was used to determine the genotypes.


RESULTS
We did not find a significant association of rs12807809 polymorphism with schizophrenia in the total pooled samples, or in the separate ethnic groups. However, in Han schizophrenia patients, quantitative data analyses showed that the CC genotype of the rs12807809 polymorphism was associated with PANSS aggression subscale score and activation subscale score. Furthermore, carriers of the C allele of rs12807809 polymorphism among Han schizophrenia patients had higher scores of general, activation, depression, aggression, and global symptoms than the T allele carriers.


CONCLUSIONS
In conclusion rs12807809 polymorphism may not contribute to the risk of schizophrenia but influence the clinical symptoms of schizophrenia in the Han population.
1School of Public Health,Guangxi Medical University,Nanning,Guangxi,China.
Li
L
Su
1School of Public Health,Guangxi Medical University,Nanning,Guangxi,China.
Jianxiong
J
Long
2Guangxi Brain Hospital,Liuzhou,Guangxi,China.
Runde
R
Pan
2Guangxi Brain Hospital,Liuzhou,Guangxi,China.
Xinfeng
X
Xie
2Guangxi Brain Hospital,Liuzhou,Guangxi,China.
Xixiang
X
Mao
1School of Public Health,Guangxi Medical University,Nanning,Guangxi,China.
Yang
Y
Zhou
2Guangxi Brain Hospital,Liuzhou,Guangxi,China.
Qiang
Q
Chen
1School of Public Health,Guangxi Medical University,Nanning,Guangxi,China.
Bo
B
Wei
D000328:Adult; D000483:Alleles; D044466:Asian People / Q000235:genetics*; D002681:China; D005260:Female; D005787:Gene Frequency; D005838:Genotype; D006801:Humans; D008297:Male; D008875:Middle Aged; D051579:Neurogranin / Q000235:genetics* / Q000378:metabolism; D020641:Polymorphism, Single Nucleotide; D012559:Schizophrenia / Q000175:diagnosis / Q000208:ethnology* / Q000235:genetics*
C496649:NRGN protein, human; D051579:Neurogranin
NRGN; polymorphism; rs12807809; schizophrenia