TP73 and neoplasm: To determine if p73 binds near the transcriptional start site (TSS) of any of the 44 genes involved in reprogramming to the iKC state, we analyzed p73 and p63 binding in ChIP-seq datasets from three basal cell models: HK (primary human keratinocytes; [46]), HaCaT (immortalized keratinocyte; newly generated herein), and HCC1806 (tumor-derived basal breast epithelial cells; newly generated herein and [21]).