SALL4 and neoplasm: For example, STAT3 (Ho et al, 2012), KLF4 (Choi et al, 2014), Sal‐like protein 4 (SALL4) (Kilic et al, 2016), SOX‐2 (Zhu et al, 2017), and CTNNB1 (Chan et al, 2009) are aberrantly expressed in BCs, and their high expression is associated with tumor progression and poor prognosis.