This genomic region contains a Neanderthal adaptively introgressed expression-modulating variant (emVar), and was validated as a functional enhancer by massively parallel reporter assays (MPRAs) in K562 erythroleukemia cells, with activity observed for both the introgressed and non-introgressed 1:20389874 or rs12028351 variant alleles. [provided by RefSeq, Sep 2023]