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Small-cell lung cancer is a highly malignant form of lung cancer, also known as oat-cell carcinoma, that accounts for approximately 15% of lung cancer cases. Composed of small, ovoid cells with very little cytoplasm, small-cell lung cancer usually originates in the bronchi and is caused by smoking.
We uncover key processes of the genomic evolution of small cell lung cancer under therapy, identify the common ancestor as the source of clonal diversity at relapse and show central genomic patterns associated with drug response.
POU2AF2 is a co-activator of POU2F3 in normal and neoplastic tuft cells, such as small cell lung cancer. Here, the authors report that POU2AF2 dictates opposing transcriptional regulation at distal enhance elements.
Yang et al. have used genetically engineered mouse models of small cell lung cancer to show that the same genomic alterations in different cells of origin lead to the formation of tumours that follow distinct evolutionary paths to metastasis.