Epigenetic causes of intra-tumoural heterogeneity are crucial in paediatric cancers with low mutation rates, such as hepatoblastoma. Here, the authors characterise transcriptional heterogeneity in hepatoblastoma using histology-guided RNA sequencing and functional studies in patient-derived tumoroids, and find how the embryonic biliary lineage program, Wnt, and paracrine signalling can promote tumour proliferation.
- Peng V. Wu
- Matt Fish
- Roel Nusse
