{{Rsnum
|rsid=17421511
|Gene=MTHFR
|Chromosome=1
|position=11797731
|Orientation=plus
|GMAF=0.1139
|Assembly=GRCh38
|GenomeBuild=38.1
|dbSNPBuild=141
|geno1=(A;A)
|geno2=(A;G)
|geno3=(G;G)
|Gene_s=MTHFR
}}{{ population diversity
| geno1=(A;A)
| geno2=(A;G)
| geno3=(G;G)
| CEU | 3.5 | 30.1 | 66.4
| HCB | 0.0 | 22.6 | 77.4
| JPT | 0.0 | 14.2 | 85.8
| YRI | 0.0 | 1.4 | 98.6
| ASW | 0.0 | 8.8 | 91.2
| CHB | 0.0 | 22.6 | 77.4
| CHD | 2.8 | 14.7 | 82.6
| GIH | 4.0 | 35.6 | 60.4
| LWK | 0.0 | 8.2 | 91.8
| MEX | 1.7 | 25.9 | 72.4
| MKK | 0.0 | 23.7 | 76.3
| TSI | 9.8 | 26.5 | 63.7
| HapMapRevision=28
}}Gene-wide association study between the methylenetetrahydrofolate reductase gene (MTHFR) and schizophrenia in the Japanese population, with an updated meta-analysis on currently available data. {{PMID|20692813}}

{{on chip | Illumina Human 1M}}