APOE and intrahepatic cholangiocarcinoma: The qPCR and ICC data described thus far suggest the following: (1) despite significant differences at certain stages of differentiation, the overall phenotypic difference observed in the APOE lines does not lead to impairment in DGC‐like neuronal differentiation capacity, (2) the gene expression phenotype characterized via qPCR could be more relevant to other cellular functions and pathways that were not investigated directly in our qPCR and ICC experiments, and finally, (3) APOE genotype may have little or no impact on the cells generated in our in vitro model of HN.