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. 2025 Jul 24;16(8):862.
doi: 10.3390/genes16080862.

Association of VAX1, MAFB, WNT3 with Non-Syndromic Cleft Lip with or without Cleft Palate in a Japanese Population

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Association of VAX1, MAFB, WNT3 with Non-Syndromic Cleft Lip with or without Cleft Palate in a Japanese Population

Tran Phuong Thao et al. Genes (Basel). .

Abstract

Background/Objectives: Non-syndromic cleft lip with or without palate (NSCL/P) is a common, multifactorial congenital anomaly. As genetic associations can be population-specific, this study aimed to investigate single-nucleotide polymorphisms (SNPs) in the VAX1, MAFB, and WNT3 genes for association with NSCL/P in a Japanese cohort. Methods: A case-control study was conducted with 310 Japanese patients with NSCL/P and 308 ethnically matched healthy controls from Aichi Gakuin Dental Hospital. We genotyped SNPs rs7078160 (VAX1), rs13041247 (MAFB), and rs3809857 (WNT3) using TaqMan assays. Associations were assessed using chi-squared tests, with results stratified by sex and corrected for multiple comparisons using the Bonferroni method. Results: The VAX1 rs7078160 A allele was significantly associated with an increased risk for NSCL/P (OR = 1.67, p < 0.00001). The association was particularly strong in females (OR = 1.93, p < 0.00001) but not significant in males after correction. The MAFB rs13041247 variant showed a nominal protective association with the NSCLO subtype that was not significant after Bonferroni correction. No significant association was found for WNT3. A notable gene-gene interaction was observed, where carrying risk alleles for both VAX1 and MAFB significantly increased overall NSCL/P risk (OR = 2.65, p = 0.00008). Conclusions:VAX1 rs7078160 is a significant risk factor for NSCL/P in the Japanese population, with a pronounced female-specific effect. A synergistic interaction between VAX1 and MAFB elevates disease risk, whereas WNT3 was not implicated in this cohort. These findings underscore the population-specific genetic architecture of NSCL/P.

Keywords: Japanese population; MAFB; VAX1; WNT3; cleft lip with or without palate.

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Conflict of interest statement

The authors declare no conflicts of interest.

Figures

Figure 1
Figure 1
Forest plots of odds ratios (ORs) and 95% confidence intervals (CIs) for the associations between genotypes of VAX1 rs7078160, MAFB rs13041247, and WNT3 rs3809857 with NSCL/P and its subtypes. Significant associations were observed for VAX1 genotypes.
Figure 2
Figure 2
Forest plots of odds ratios (ORs) and 95% confidence intervals (CIs) for the associations between genotypes of VAX1 rs7078160, MAFB rs13041247, and WNT3 rs3809857 with NSCL/P and its subtypes in females. Significant associations were observed for VAX1 genotypes.
Figure 3
Figure 3
Forest plots of odds ratios (ORs) and 95% confidence intervals (CIs) for the associations between genotypes of VAX1 rs7078160, MAFB rs13041247, and WNT3 rs3809857 with NSCL/P and its subtypes in males.

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