MTOR and cancer: Tyrosine kinase receptors, Ras/Raf/mitogen-activated protein kinase (MAPK), PI3K/Akt/mTOR, Janus kinase (JAK)/Signal transducer, and activators of transcription (STAT) and Wnt/β-catenin pathways are a few examples of key signaling molecules of interest when it comes to developing an anti-cancer drug [4].