{{Rsnum
|rsid=9394492
|Gene=BTBD9
|Chromosome=6
|position=38364834
|Orientation=plus
|GMAF=0.4408
|Assembly=GRCh38
|GenomeBuild=38.1
|dbSNPBuild=141
|geno1=(C;C)
|geno2=(C;T)
|geno3=(T;T)
|Gene_s=BTBD9
}}{{ population diversity
| geno1=(C;C)
| geno2=(C;T)
| geno3=(T;T)
| CEU | 42.5 | 47.8 | 9.7
| HCB | 0.0 | 12.4 | 87.6
| JPT | 0.9 | 24.8 | 74.3
| YRI | 34.7 | 49.7 | 15.6
| ASW | 31.6 | 63.2 | 5.3
| CHB | 0.0 | 12.4 | 87.6
| CHD | 0.0 | 8.3 | 91.7
| GIH | 9.9 | 40.6 | 49.5
| LWK | 44.5 | 39.1 | 16.4
| MEX | 12.1 | 39.7 | 48.3
| MKK | 56.4 | 39.1 | 4.5
| TSI | 34.3 | 52.0 | 13.7
| HapMapRevision=28
}}[[rs9394492]], a SNP located in the [[BTBD9]] gene region, has been linked to a lower frequency of [[restless legs syndrome]], a common sleep disorder, with an overall odds ratio of 0.76 (CI: 0.64-0.87) for the (T) minor allele. {{PMID|17637780}}

{{on chip | 23andMe v3}}
{{on chip | 23andMe v4}}
{{on chip | Affy GenomeWide 6}}
{{on chip | FTDNA2}}
{{on chip | FTDNA}}
{{on chip | HumanOmni1Quad}}
{{on chip | Illumina Human 1M}}