BACH1 and cancer: Accumulating data establish BACH1 as a critical facilitator of tumorigenesis and metastasis in breast (Lee et al, 2013), colon (Davudian et al, 2016b), prostate (Shajari et al, 2018) ovarian (Han et al, 2019), and lung (Lignitto et al, 2019; Wiel et al, 2019) cancer.