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Rs12941170 at SOX9 gene associated with orofacial clefts in Chinese

Publication date: April 2017
Source:Archives of Oral Biology, Volume 76
Author(s): Zhong-Lin Jia, Sha He, Shu-Yuan Jiang, Bi-He Zhang, Shi-Jun Duan, Jia-Yu Shi, Ning Huang, Wen-Chao Zhu, Bing Shi
ObjectiveNon-syndromic orofacial cleftings (NSOCs) are considered as complex trait, which results from genetic and/or environmental modifiers. Current findings could only explain small portion of the NSOCs. SOX9 gene plays an important role during craniofacial development in animal models and the Pierre Robin sequence (PRS). However, its role in non-syndromic clefts remains unknown.DesignIn this study, we selected eight SNPs in and around SOX9 gene to make maximum coverage, and genotyped them by using RFLP-PCR and ligase detection reaction (LDR) methods to test its associations among 151 NSOCs (53 NSCLP, 52 NSCLO and 46 NSCPO) from Western Han Chinese population.ResultsAllelic TDT results showed that G allele at rs12941170 of SOX9 was under-transmitted among NSOCs (p=0.00014, OR=0.55 and 95%CI: 0.40–0.75), which could indicate that the G allele is protective against NSOCs; parent-of-origin effect analysis showed that G allele at rs12941170 was maternally under-transmitted (p=0.002), while there was no statistically difference between the maternal and paternal transmission of it. To test if the adjacent SNPs travel together from parents to the affected individual, we carried out the sliding window haplotype analysis, it is interesting to find that the haplotypes carrying the G allele at rs12941170 also was under-transmitted for NSOCs, NSCL/P, NSCLP and NSCPO (lowest p=0.00033).ConclusionsThis study suggested that G allele at rs12941170 was protective, which could decrease the risk for NSOCs from Western Han Chinese population, and it will provide new reference for future research and genetic counseling in NSOCs.



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