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  • Title: Association of calmodulin1 gene polymorphisms with susceptibility to adolescent idiopathic scoliosis.
    Author: Zhao D, Qiu GX, Wang YP, Zhang JG, Shen JX, Wu ZH, Wang H.
    Journal: Orthop Surg; 2009 Feb; 1(1):58-65. PubMed ID: 22009783.
    Abstract:
    OBJECTIVE: To investigate whether: (i) rs12885713 (-16C > T) and rs5871 polymorphisms in the Calmodulin1 (CALM1) gene are predisposing factors for adolescent idiopathic scoliosis (AIS); and (ii) different single nucleotide polymorphisms (SNP) correlate with different subtypes of AIS. METHODS: A total of 100 AIS patients with Cobb angle above 30° were recruited for this study together with 100 healthy controls. Curve pattern, Cobb angle, and Risser sign were recorded. Two polymorphic loci, rs12885713 (-16C > T) and rs5871 loci, of the CALM1 gene were analyzed. All patients were grouped according to the Peking Union Medical College (PUMC) classification, the apical location of the major curve, and the Cobb angle. RESULTS: There was a statistically significant difference in the distribution of rs12885713 site polymorphism (P = 0.034) between PUMC type II (double curve) patients and controls, in the distribution of rs12885713 site polymorphism (P = 0.009) between lumbar curve cases and controls and in the distribution of rs5871 site polymorphism (P = 0.035) between thoracic curve patients and controls. CONCLUSION: Different subtypes of AIS might be related to different SNP. The susceptibility of PUMC type II (double curve) AIS and lumbar curve might be related to CALM1 rs12885713 site polymorphism, while rs5871 site polymorphism might be a risk indicator for thoracic curve cases.
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