Variant: rs1186238 

    present in Gene: AQP4;AQP4-AS1
    present in Chromosome: 18
    Position on Chromosome: 26857540
    Alleles of this Variant: A/C

rs1186238 in AQP4;AQP4-AS1 gene and Hair Color PMID 30531825 2018 Genome-wide study of hair colour in UK Biobank explains most of the SNP heritability.