PTK2 and neoplasm: FAK is a cytoplasmatic protein tyrosine kinase and plays a crucial role in promoting tumor cell invasiveness, which is attributed to both kinase-independent and kinase-dependent scaffolding functions (Jean et al., 2014; Taliaferro-Smith et al., 2015; Shen et al., 2018; Rigiracciolo et al., 2021; Zhang et al., 2021).