The ABCB1-overexpressing SW620/Ad300 colon cancer cells were significantly resistant to paclitaxel (RF = 77.30) and doxorubicin (RF = 74.76) compared to the parental SW620 colon cancer cells that do not express the ABCB1 transporter (Table 2). Here, ABCB1 is linked to colonic neoplasm.