Variant: rs75972122 

    present in Gene: SDF4;TNFRSF4
    present in Chromosome: 1
    Position on Chromosome: 1216593
    Alleles of this Variant: G/A;C

rs75972122 in SDF4;TNFRSF4 gene and Hair Color PMID 30531825 2018 Genome-wide study of hair colour in UK Biobank explains most of the SNP heritability.