Association of single nucleotide polymorphisms at 20q12 with nonsyndromic cleft lip with or without cleft palate in a Southern Chinese Han cohort.
BACKGROUND
Nonsyndromic cleft lip with or without cleft palate (NSCL/P) is a common congenital malformation in the world. Both environment and genetics are involved with the etiology of the disease. Genome-wide association studies have identified two single nucleotide polymorphisms (SNPs) at chromosome 20q12 to be associated with NSCL/P. The current study aimed to explore the association of the two SNPs at 20q12 with NSCL/P and different subtypes in a Southern Chinese Han cohort.


METHODS
A total of 430 NSCL/P patients and 451 controls were recruited in the current study. Two SNPs including rs17820943 and rs6072081 at 20q12 were genotyped in the study cohort using Taqman SNP genotyping analysis. Chi-Square test was used to compare allele and genotype frequencies of NSCL/P patients and control group.


RESULTS
Case-control analysis showed that the allele and genotype of rs17820943 and rs6072081 were significantly associated with NSCL/P (p < .01). Comparison between subtypes of NSCL/P and controls showed that frequencies of the G allele and GG genotype of rs6072081 (p = 4.52 × 10-4 and p = .001 respectively), and those of the T allele and TT genotype of rs17820943 (p = 6.7 × 10-5 and p = 1.71 × 10-4 respectively) were decreased in cleft lip and palate (CLP). No significant association of the two SNPs with cleft lip only (CLO) and cleft palate only (CPO) was found (p > .05).


CONCLUSION
These results showed that rs17820943 and rs6072081 at 20q12 were associated with NSCL/P, especially with the CLP subtype in a Southern Chinese Han cohort.
['He|Yunpu|Y|0000-0002-9849-2925', 'Huang|Liheng|L|', 'Zheng|Yuqian|Y|', 'Chen|Jian-Huan|JH|0000-0001-8714-2543', 'Tang|Shijie|S|']
D002648:Child D002675:Child, Preschool D002681:China D002890:Chromosomes, Human, Pair 20 D002971:Cleft Lip D002972:Cleft Palate D005260:Female D006801:Humans D008297:Male D020641:Polymorphism, Single Nucleotide
nonsyndromic cleft lip with or without cleft palate (NSCL/P) single nucleotide polymorphism (SNP) 20q12.