a. IDH2 R172K expression using mutant-specific antibodies in livers from LSL-R172K and KrasG12D, R172K compound mice showing specific expression of the R172K transgene in Sox9+ oval cells and IHCC. Scale bars = 50µm.
b. Normalized enrichment plot of a cohort of 127 human IHCC samples genotyped for IDH status, showing that the subset of tumors with IDH1/IDH2 mutations exhibits enrichment of a gene signature40 that identifies IHCCs with hepatic stem cell/progenitor features.