MIR21 and hepatocellular carcinoma: Next, we evaluated the correlation between the IC50 concentrations of paclitaxel and the mRNA levels of ARID1A and VMP1/MIR21 in a panel of breast cell lines; AU565, BT‐20, BT474, BT‐549, CAL‐51, DU4475, HCC‐1143, HCC‐1419, HCC‐1428, HCC‐1500, HCC‐1806, HCC‐1937, HCC‐1954, HCC‐38, HCC‐70, Hs578T, MCF‐7, MDA‐MB‐231, MDA‐MB‐436, MDA‐MB‐468, SKBR3, T47D and ZRT post‐treatment with or without paclitaxel treatment at their respective 10‐fold IC50 concentrations.