Khorsandi et al. performed label-free phosphoproteomic quantifications of thirteen CCA tumors with corresponding normal adjacent tissues (NATs) and seven CCA cell lines; the KSEA-based analysis suggested CDK and MAPK as potential CCA-related PKs, which were also suggested in the result of KSEA-based prediction in this study (Table S4). The gene discussed is ARAF; the disease is cholangiocarcinoma.