Other assays conducted on the drug-resistant, BCRP-overexpressing ovarian cancer cell lines T8 and MX3 confirmed that elacridar added in a concentration of 2 μM allowed to re-sensitize both the cell lines to TOP (IC50 decreased 27-fold for T8 and 20-fold for MX3) [76]. Here, ABCG2 is linked to ovarian cancer.