{{Rsnum
|rsid=807701
|Gene=DCDC2
|Chromosome=6
|position=24273563
|Orientation=minus
|GMAF=0.4178
|Assembly=GRCh38
|GenomeBuild=38.1
|dbSNPBuild=141
|geno1=(C;C)
|geno2=(C;T)
|geno3=(T;T)
|Gene_s=DCDC2
}}{{ population diversity
| geno1=(C;C)
| geno2=(C;T)
| geno3=(T;T)
| CEU | 3.1 | 55.4 | 41.5
| HCB | 6.7 | 42.2 | 51.1
| JPT | 2.3 | 45.5 | 52.3
| YRI | 81.0 | 17.5 | 1.6
| ASW | 0.0 | 0.0 | 0.0
| CHB | 6.7 | 42.2 | 51.1
| CHD | 0.0 | 0.0 | 0.0
| GIH | 0.0 | 0.0 | 0.0
| LWK | 0.0 | 0.0 | 0.0
| MEX | 0.0 | 0.0 | 0.0
| MKK | 0.0 | 0.0 | 0.0
| TSI | 0.0 | 0.0 | 0.0
| HapMapRevision=28
}}[[Rs807701]], a SNP in the [[DCDC2]] gene, is in a region that crops up in several independent studies as likely to associated with [[dyslexia]]. The risk allele in the Caucasian populations studied is (C).

One study reports that the odds ratio for [[rs807701]] genotypes increases if calculated from subsets of more severely dyslexic individuals as compared to more heterogenous, larger groups of dyslexic individuals. The genotype relative risk (GRR) for [[rs807701(C;C)]] increased from 1.88 (95% CI 0.89-3.97; P=.058) for the larger group up to 5.04 (95% CI 1.35-18.88; P=.002) for the most severely affected group. {{PMID|16385449|OA=1
}}

Combined with another SNP marker in the [[DCDC2]] gene, [[rs793862]], the (haplotype) GRR also increased for the homozygous haplotype [[rs793862]](A)-[[rs807701]](C), from 4.11 (95% CI 2.77-6.08; P<.0001) for the larger group, up to 11.13 (95% CI 6.32-19.60; P<.0001) for the most severely affected group. {{PMID|16385449|OA=1
}}

{{PMID Auto
|PMID=19238550
|Title=The role of gene DCDC2 in German dyslexics.
}}

{{PMID Auto
|PMID=23229871
|Title=Meta-analysis of the association between DCDC2 polymorphisms and risk of dyslexia.
}}

{{on chip | 23andMe v1}}
{{on chip | 23andMe v2}}
{{on chip | 23andMe v3}}
{{on chip | 23andMe v4}}
{{on chip | FTDNA2}}
{{on chip | HumanOmni1Quad}}