In our previous reports, we showed that BRG1 and nucleosome acetylation were enriched at the promoters of some ATP-binding cassette transporters (ABC transporters), such as ABCC4, ABCC5, ABCC10, and ABCG2, in the triple-negative breast cancer cell line MDA-MB-231. The gene discussed is ABCG2; the disease is triple-negative breast carcinoma.