HSPA9 and cancer: Mortalin, a member of the Hsp70 family of proteins, enriched in many types of cancers, has been shown to be involved in multiple ways in the process of carcinogenesis (Dundas et al., 2005; Wadhwa et al., 2006; Yi et al., 2008; Yun et al., 2017; Xu et al., 2020; Meng et al., 2021; Teng et al., 2021; Wei et al., 2021; Wu et al., 2021; Yang et al., 2021; Zhang et al., 2021).