ZEB1 and neoplasm: Combined expression of WNT ligands (WNT3A, WNT4, WNT7B, WNT9A, WNT10A, WNT11) in BRCA patient tumours has a positive correlation (R = 0.27, p value = 0) with the combined expression of key EMT-inducing transcription factors SNAI1, SNAI2, ZEB1, ZEB2 and TWIST1 (Fig. 8i).