ARID1A and intrahepatic cholangiocarcinoma: Among of these genes, genetic alterations in the ARID1A were detected in 7% to 36% of ICC (Chan-On et al., 2013; Jiao et al., 2013; Simbolo et al., 2014; Churi et al., 2014; Jusakul et al., 2017) and 5% to 12% of extrahepatic CCA (ECC) cases (Chan-On et al., 2013; Simbolo et al., 2014; Churi et al., 2014; Nakamura et al., 2015).