Source:http://linkedlifedata.com/resource/umls/id/C1704927
NCI: Human ABCG2 wild-type allele is located within 4q22 and is approximately 67 kb in length. This allele, which encodes ATP-binding cassette sub-family G member 2 protein, plays a role in transmembrane transport and transcriptional regulation. The allele is thought to play a role in cellular defense and aberrations are thought to play a role in tumor multidrug resistance.