{{Rsnum
|rsid=3856973
|Gene=HTT
|Chromosome=4
|position=3078446
|Orientation=minus
|GMAF=0.4302
|Assembly=GRCh38
|GenomeBuild=38.1
|dbSNPBuild=141
|geno1=(C;C)
|geno2=(C;T)
|geno3=(T;T)
|Gene_s=HTT
}}{{ population diversity
| geno1=(C;C)
| geno2=(C;T)
| geno3=(T;T)
| CEU | 37.2 | 41.6 | 21.2
| HCB | 35.0 | 46.0 | 19.0
| JPT | 31.9 | 54.0 | 14.2
| YRI | 27.2 | 51.7 | 21.1
| ASW | 40.4 | 50.9 | 8.8
| CHB | 35.0 | 46.0 | 19.0
| CHD | 30.3 | 48.6 | 21.1
| GIH | 58.4 | 34.7 | 6.9
| LWK | 22.2 | 48.1 | 29.6
| MEX | 33.3 | 49.1 | 17.5
| MKK | 20.5 | 55.1 | 24.4
| TSI | 39.2 | 47.1 | 13.7
| HapMapRevision=28
}}{{PharmGKB
|RSID=rs3856973
|Name_s=
|Gene_s=HTT
|Feature=
|Evidence=PubMed ID:19249009
|Annotation=This SNP is part of a haplogroup found to be associated with CAG repeat number expansion in Huntington disease (36 or more CAG repeats) in Europeans and also with intermediate expansion(27-35 repeats) in unaffected individuals(Europeans). This SNP itself was significantly associated(p < 0.0023) with the expansion.
|Drugs=
|Drug Classes=
|Diseases=Huntington Disease
|Curation Level=Curated
|PharmGKB Accession ID=PA164918140
}}

{{GET Evidence
|impact=pharmacogenetic
|qualified_impact=Insufficiently evaluated pharmacogenetic
|inheritance=unknown
|quality_scores=Array
|dbsnp_id=rs3856973
|overall_frequency_n=59
|overall_frequency_d=128
|overall_frequency=0.460938
|n_genomes=38
|n_genomes_annotated=0
|n_haplomes=49
|n_articles=1
|n_articles_annotated=0
|in_pharmgkb=Y
|autoscore=1
|webscore=N
}}

{{on chip | 23andMe v1}}
{{on chip | 23andMe v2}}
{{on chip | 23andMe v3}}
{{on chip | 23andMe v4}}
{{on chip | Affy GenomeWide 6}}
{{on chip | Illumina Human 1M}}