Rs1801131

rs1801131 is a SNP in the MTHFR gene, representing an A>C mutation at mRNA position 1298, resulting in a glu429-to-ala (E429A) substitution (hence this SNP is also known as A1298C or E429A).

A diplotype (according to the authors, but perhaps actually a genoset) of rs1801131 and rs1801133 has been linked to increased risk for several types of brain cancer. The highest risk of meningioma was associated with heterozygosity for both MTHFR SNPs (odds ratio 2.11, CI: 1.42-3.12, p=0.002). The corresponding odds ratio for glioma was 1.23 (CI: 0.91-1.66, p=0.02. In general, risks were increased with genotypes associated with reduced MTHFR activity.

rs1801131 shows no consistent association with schizophrenia overall in 12 studies totaling 3,000+ patients