{{Rsnum
|rsid=3138774
|Orientation=plus
|Chromosome=6
|position=151806527
|Gene=ESR1
|Assembly=GRCh38
|GenomeBuild=38.1
|dbSNPBuild=141
}}{{PharmGKB
|RSID=rs3138774
|Name_s=ESR1:(TA)n repeat
|Gene_s=ESR1
|Feature=
|Evidence=PubMed ID:16762623; PubMed ID:17372038; PubMed ID:17540666; PubMed ID:17612870
|Annotation=May contribute to several phenotypes: infertility, left ventricular mass, cancer.
|Drugs=
|Drug Classes=
|Diseases=
|Curation Level=Curated
|PharmGKB Accession ID=PA161145053
}}