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. 2021 May 13;8:387–401. doi: 10.2147/JHC.S300182

Figure 3.

Figure 3

Treatment regimens and their mechanisms of action. The Ras/Raf/MEK/ERK and PI3K/Akt/mTOR cascades are often activated by genetic alterations in upstream signaling molecules such as receptor tyrosine kinases.27,77,78

Abbreviations: HCC, hepatocellular carcinoma; VEGFR, vascular endothelial growth factorrReceptor 2; PDGFR, platelet-derived growth factor; FLT3, fms-like tyrosine kinase 3; FGFR, fibroblast growth factor receptors; MET, tyrosine-protein kinase met or hepatocyte growth factor receptor (HGFR); Tie2, a tyrosine kinase receptor; PD-1, programmed cell death protein 1; PD-L1, programmed death-ligand 1.