FABP5 and cancer: Mechanism studies have revealed that FABP5 regulates tumorigenesis and cancer progression by regulating different pathways including MMP-2/MMP-9, PI3K/AKT, and PPARs pathways (Rauch et al., 2004; Shi et al., 2012; Forootan et al., 2014; Ohyama et al., 2014; Nitschke et al., 2020) (Figure 7 and Table 2).