To investigate the association of BCAA degradation pathway activity with prognosis in ICC cases, we analysed the matched transcriptome data and cohort survival information from 103 ICC tumours generated for previous studies [18], including 137 ICCs, 74 extrahepatic cholangiocarcinomas, and 28 gallbladder cancers (Shibata cohort). Here, ARID4B is linked to intrahepatic cholangiocarcinoma.