ABCC1 and hepatocellular carcinoma: Our results also corroborated (HCC: logrank P = 5.4*10–5, HR 2.01, CI 1.42–2.84; BRCA: logrank P = 2.2*10–5, HR 1.43, CI 1.21–1.68) previous observations that increased expression of the multidrug resistance transporter MRP1 associated with poor prognosis in HCC (Vander Borght et al. 2008) and BRCA patients undergoing chemotherapy (Filipits et al. 2005).