These results support that missense mutation in the EBF2 c.215C > T (p.Ala72Val) is very likely to contribute to the pathogenesis of ARM in this family.
The results suggested that, when the rs61730970, rs200798148 and rs146535482 alleles of the HH gene lacked particular single nucleotide polymorphisms (SNPs), the patients were associated with a greater risk of HSCR and/or ARM [HSCR: odds ratio (OR)=1.543, P=0.004; OR=1.494, P=0.007; rs146535482: OR=1.556, P=0.003, respectively.
This first study investigating interactions between periconceptional folic acid supplement use and infant and maternal MTHFR C677T polymorphisms in the etiology of ARM did not provide evidence for a role of this gene-environment interaction.