IFITM3 and cancer: IFITM3 is highly expressed in many cancers (Andreu et al., 2006; Hu et al., 2014; Li et al., 2011; Yang et al., 2013) and has been variously implicated in tumour cell proliferation, migration and invasion (Hu et al., 2014; Li et al., 2011; Yang et al., 2013; Zhao et al., 2013).