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Variants of the OLIG2 Gene are Associated with Cerebral Palsy in Chinese Han Infants with Hypoxic-Ischemic Encephalopathy

Journal article
Authors L. Y. Sun
L. Xia
M. T. Wang
D. N. Zhu
Y. G. Wang
D. Bi
J. Song
C. Y. Ma
C. Gao
X. L. Zhang
Y. Y. Sun
X. Y. Wang
Changlian Zhu
Q. H. Xing
Published in Neuromolecular Medicine
Volume 21
Issue 1
Pages 75-84
ISSN 1535-1084
Publication year 2019
Published at Institute of Neuroscience and Physiology
Pages 75-84
Language en
Keywords Cerebral palsy, OLIG2, HIE, SNP, Hypoxia, Ischemia, white-matter injury, transcription factor, gestational-age, birth-weight, lineage, prevalence, expression, differentiation, erythropoietin, proliferation, Neurosciences & Neurology, ates of america, v103, p12469
Subject categories Neurology


Cerebral palsy (CP) is a leading cause of neurological disability among young children. Congenial and adverse perinatal clinical conditions, such as genetic factors, perinatal infection, and asphyxia, are risk factors for CP. Oligodendrocyte transcription factor (OLIG2) is a protein that is expressed in brain oligodendrocyte cells and is involved in neuron repair after brain injury. In this study, we employed a Chinese Han cohort of 763 CP infants and 738 healthy controls to study the association of OLIG2 gene polymorphisms with CP. We found marginal association of the SNP rs6517135 with CP (p=0.044) at the genotype level, and the association was greatly strengthened when we focused on the subgroup of CP infants who suffered from hypoxic-ischemic encephalopathy (HIE) after birth, with p=0.003 (OR=0.558) at the allele level and p=0.007 at the genotype level, indicating a risk-associated role of the T allele of the SNP rs6517135 under HIE conditions. The haplotype CTTG for rs6517135-rs1005573-rs6517137-rs9653711 in OLIG2 was also significantly associated with the occurrence of CP in infants with HIE (p=0.01, OR=0.521). Our results indicate that in the Han Chinese population, the polymorphisms of OLIG2 were associated with CP, especially in patients who had suffered HIE injury. This finding could be used to develop personalized care for infants with high susceptibility to CP.

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