The genetic association of Vitamin D receptor polymorphisms and cervical spondylotic myelopathy in Chinese subjects

Abstract Background The association of vitamin D receptor (VDR) gene polymorphisms to the lumbar degenerative disc disease has been previously studied; however, the role of VDR gene polymorphisms in cervical spondylosis remains unknown. Methods One hundred fifty four patients with cervical spondylotic myelopathy (CSM) and 156 controls were enrolled. The clinical characteristics were collected and the severity of cervical spondylotic myelopathy was evaluated by magnetic resonance imaging (MRI). The VDR polymorphism genotyping was performed. Results No significant difference in clinical characteristics was noted between the case and controls. For Apa I polymorphism, the cases had a marked higher prevalence of AA genotype (19.5% vs. 8.3%, P  = 0.003) and A allele frequencies (34.4% vs. 22.4%, P Taq I polymorphism, the cases had a significant higher prevalence of TT genotype (67.5vs. 44.2%, P P Apa I A allele carriers and 4.67 for the Taq I T allele carriers. The Taq I genotypes, both TT and TC showed a markedly higher MRI severity grading level than CC genotype (both P Conclusion Certain VDR polymorphism is related in the presence and severity of CSM in Chinese subjects.