ZEB1 and cancer: Examination of several alternatively spliced variants of Ets1 revealed that p54‐Ets1, which includes exon VII, but not p42‐Ets1, which excludes exon VII, regulates the expression of the EMT transcription factors, suggesting that Ets1 is a crucial molecule for regulating Snail and ZEB1/2, and thus cancer progression is mediated through post‐translational modification of the exon VII domain.